diff options
Diffstat (limited to 'arch/m68k')
165 files changed, 27737 insertions, 6770 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 525174d..6e056d3 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -1,13 +1,11 @@ config M68K bool default y - select HAVE_AOUT select HAVE_IDE - select GENERIC_ATOMIC64 - -config MMU - bool - default y + select HAVE_AOUT if MMU + select GENERIC_ATOMIC64 if MMU + select HAVE_GENERIC_HARDIRQS if !MMU + select GENERIC_HARDIRQS_NO_DEPRECATED if !MMU config RWSEM_GENERIC_SPINLOCK bool @@ -34,457 +32,67 @@ config TIME_LOW_RES bool default y -config GENERIC_IOMAP - bool - default y - -config ARCH_MAY_HAVE_PC_FDC - bool - depends on BROKEN && (Q40 || SUN3X) - default y - config NO_IOPORT def_bool y config NO_DMA - def_bool SUN3 + def_bool (MMU && SUN3) || (!MMU && !COLDFIRE) +config ZONE_DMA + bool + default y config HZ int + default 1000 if CLEOPATRA default 100 -config ARCH_USES_GETTIMEOFFSET - def_bool y - source "init/Kconfig" source "kernel/Kconfig.freezer" -menu "Platform dependent setup" - -config EISA - bool - ---help--- - The Extended Industry Standard Architecture (EISA) bus was - developed as an open alternative to the IBM MicroChannel bus. - - The EISA bus provided some of the features of the IBM MicroChannel - bus while maintaining backward compatibility with cards made for - the older ISA bus. The EISA bus saw limited use between 1988 and - 1995 when it was made obsolete by the PCI bus. - - Say Y here if you are building a kernel for an EISA-based machine. - - Otherwise, say N. - -config MCA - bool - help - MicroChannel Architecture is found in some IBM PS/2 machines and - laptops. It is a bus system similar to PCI or ISA. See - <file:Documentation/mca.txt> (and especially the web page given - there) before attempting to build an MCA bus kernel. - -config PCMCIA - tristate - ---help--- - Say Y here if you want to attach PCMCIA- or PC-cards to your Linux - computer. These are credit-card size devices such as network cards, - modems or hard drives often used with laptops computers. There are - actually two varieties of these cards: the older 16 bit PCMCIA cards - and the newer 32 bit CardBus cards. If you want to use CardBus - cards, you need to say Y here and also to "CardBus support" below. - - To use your PC-cards, you will need supporting software from David - Hinds' pcmcia-cs package (see the file <file:Documentation/Changes> - for location). Please also read the PCMCIA-HOWTO, available from - <http://www.tldp.org/docs.html#howto>. - - To compile this driver as modules, choose M here: the - modules will be called pcmcia_core and ds. - -config AMIGA - bool "Amiga support" - select MMU_MOTOROLA if MMU - help - This option enables support for the Amiga series of computers. If - you plan to use this kernel on an Amiga, say Y here and browse the - material available in <file:Documentation/m68k>; otherwise say N. - -config ATARI - bool "Atari support" - select MMU_MOTOROLA if MMU - help - This option enables support for the 68000-based Atari series of - computers (including the TT, Falcon and Medusa). If you plan to use - this kernel on an Atari, say Y here and browse the material - available in <file:Documentation/m68k>; otherwise say N. - -config MAC - bool "Macintosh support" - select MMU_MOTOROLA if MMU - help - This option enables support for the Apple Macintosh series of - computers (yes, there is experimental support now, at least for part - of the series). - - Say N unless you're willing to code the remaining necessary support. - ;) - -config NUBUS - bool - depends on MAC - default y - -config M68K_L2_CACHE - bool - depends on MAC - default y - -config APOLLO - bool "Apollo support" - select MMU_MOTOROLA if MMU - help - Say Y here if you want to run Linux on an MC680x0-based Apollo - Domain workstation such as the DN3500. - -config VME - bool "VME (Motorola and BVM) support" - select MMU_MOTOROLA if MMU - help - Say Y here if you want to build a kernel for a 680x0 based VME - board. Boards currently supported include Motorola boards MVME147, - MVME162, MVME166, MVME167, MVME172, and MVME177. BVME4000 and - BVME6000 boards from BVM Ltd are also supported. - -config MVME147 - bool "MVME147 support" - depends on VME - help - Say Y to include support for early Motorola VME boards. This will - build a kernel which can run on MVME147 single-board computers. If - you select this option you will have to select the appropriate - drivers for SCSI, Ethernet and serial ports later on. - -config MVME16x - bool "MVME162, 166 and 167 support" - depends on VME - help - Say Y to include support for Motorola VME boards. This will build a - kernel which can run on MVME162, MVME166, MVME167, MVME172, and - MVME177 boards. If you select this option you will have to select - the appropriate drivers for SCSI, Ethernet and serial ports later - on. - -config BVME6000 - bool "BVME4000 and BVME6000 support" - depends on VME - help - Say Y to include support for VME boards from BVM Ltd. This will - build a kernel which can run on BVME4000 and BVME6000 boards. If - you select this option you will have to select the appropriate - drivers for SCSI, Ethernet and serial ports later on. - -config HP300 - bool "HP9000/300 and HP9000/400 support" - select MMU_MOTOROLA if MMU - help - This option enables support for the HP9000/300 and HP9000/400 series - of workstations. Support for these machines is still somewhat - experimental. If you plan to try to use the kernel on such a machine - say Y here. - Everybody else says N. - -config DIO - bool "DIO bus support" - depends on HP300 +config MMU + bool "MMU-based Paged Memory Management Support" default y help - Say Y here to enable support for the "DIO" expansion bus used in - HP300 machines. If you are using such a system you almost certainly - want this. - -config SUN3X - bool "Sun3x support" - select MMU_MOTOROLA if MMU - select M68030 - help - This option enables support for the Sun 3x series of workstations. - Be warned that this support is very experimental. - Note that Sun 3x kernels are not compatible with Sun 3 hardware. - General Linux information on the Sun 3x series (now discontinued) - is at <http://www.angelfire.com/ca2/tech68k/sun3.html>. - - If you don't want to compile a kernel for a Sun 3x, say N. - -config Q40 - bool "Q40/Q60 support" - select MMU_MOTOROLA if MMU - help - The Q40 is a Motorola 68040-based successor to the Sinclair QL - manufactured in Germany. There is an official Q40 home page at - <http://www.q40.de/>. This option enables support for the Q40 and - Q60. Select your CPU below. For 68LC060 don't forget to enable FPU - emulation. - -config SUN3 - bool "Sun3 support" - depends on !MMU_MOTOROLA - select MMU_SUN3 if MMU - select M68020 - help - This option enables support for the Sun 3 series of workstations - (3/50, 3/60, 3/1xx, 3/2xx systems). Enabling this option requires - that all other hardware types must be disabled, as Sun 3 kernels - are incompatible with all other m68k targets (including Sun 3x!). - - If you don't want to compile a kernel exclusively for a Sun 3, say N. - -config NATFEAT - bool "ARAnyM emulator support" - depends on ATARI - help - This option enables support for ARAnyM native features, such as - access to a disk image as /dev/hda. - -config NFBLOCK - tristate "NatFeat block device support" - depends on BLOCK && NATFEAT - help - Say Y to include support for the ARAnyM NatFeat block device - which allows direct access to the hard drives without using - the hardware emulation. - -config NFCON - tristate "NatFeat console driver" - depends on NATFEAT - help - Say Y to include support for the ARAnyM NatFeat console driver - which allows the console output to be redirected to the stderr - output of ARAnyM. - -config NFETH - tristate "NatFeat Ethernet support" - depends on NET_ETHERNET && NATFEAT - help - Say Y to include support for the ARAnyM NatFeat network device - which will emulate a regular ethernet device while presenting an - ethertap device to the host system. - -comment "Processor type" - -config M68020 - bool "68020 support" - help - If you anticipate running this kernel on a computer with a MC68020 - processor, say Y. Otherwise, say N. Note that the 68020 requires a - 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the - Sun 3, which provides its own version. - -config M68030 - bool "68030 support" - depends on !MMU_SUN3 - help - If you anticipate running this kernel on a computer with a MC68030 - processor, say Y. Otherwise, say N. Note that a MC68EC030 will not - work, as it does not include an MMU (Memory Management Unit). - -config M68040 - bool "68040 support" - depends on !MMU_SUN3 - help - If you anticipate running this kernel on a computer with a MC68LC040 - or MC68040 processor, say Y. Otherwise, say N. Note that an - MC68EC040 will not work, as it does not include an MMU (Memory - Management Unit). - -config M68060 - bool "68060 support" - depends on !MMU_SUN3 - help - If you anticipate running this kernel on a computer with a MC68060 - processor, say Y. Otherwise, say N. - -config MMU_MOTOROLA - bool - -config MMU_SUN3 - bool - depends on MMU && !MMU_MOTOROLA - -config M68KFPU_EMU - bool "Math emulation support (EXPERIMENTAL)" - depends on EXPERIMENTAL - help - At some point in the future, this will cause floating-point math - instructions to be emulated by the kernel on machines that lack a - floating-point math coprocessor. Thrill-seekers and chronically - sleep-deprived psychotic hacker types can say Y now, everyone else - should probably wait a while. - -config M68KFPU_EMU_EXTRAPREC - bool "Math emulation extra precision" - depends on M68KFPU_EMU - help - The fpu uses normally a few bit more during calculations for - correct rounding, the emulator can (often) do the same but this - extra calculation can cost quite some time, so you can disable - it here. The emulator will then "only" calculate with a 64 bit - mantissa and round slightly incorrect, what is more than enough - for normal usage. - -config M68KFPU_EMU_ONLY - bool "Math emulation only kernel" - depends on M68KFPU_EMU - help - This option prevents any floating-point instructions from being - compiled into the kernel, thereby the kernel doesn't save any - floating point context anymore during task switches, so this - kernel will only be usable on machines without a floating-point - math coprocessor. This makes the kernel a bit faster as no tests - needs to be executed whether a floating-point instruction in the - kernel should be executed or not. - -config ADVANCED - bool "Advanced configuration options" - ---help--- - This gives you access to some advanced options for the CPU. The - defaults should be fine for most users, but these options may make - it possible for you to improve performance somewhat if you know what - you are doing. - - Note that the answer to this question won't directly affect the - kernel: saying N will just cause the configurator to skip all - the questions about these options. + Select if you want MMU-based virtualised addressing space + support by paged memory management. If unsure, say 'Y'. - Most users should say N to this question. - -config RMW_INSNS - bool "Use read-modify-write instructions" - depends on ADVANCED - ---help--- - This allows to use certain instructions that work with indivisible - read-modify-write bus cycles. While this is faster than the - workaround of disabling interrupts, it can conflict with DMA - ( = direct memory access) on many Amiga systems, and it is also said - to destabilize other machines. It is very likely that this will - cause serious problems on any Amiga or Atari Medusa if set. The only - configuration where it should work are 68030-based Ataris, where it - apparently improves performance. But you've been warned! Unless you - really know what you are doing, say N. Try Y only if you're quite - adventurous. - -config SINGLE_MEMORY_CHUNK - bool "Use one physical chunk of memory only" if ADVANCED && !SUN3 - default y if SUN3 - select NEED_MULTIPLE_NODES - help - Ignore all but the first contiguous chunk of physical memory for VM - purposes. This will save a few bytes kernel size and may speed up - some operations. Say N if not sure. +menu "Platform dependent setup" -config 060_WRITETHROUGH - bool "Use write-through caching for 68060 supervisor accesses" - depends on ADVANCED && M68060 - ---help--- - The 68060 generally uses copyback caching of recently accessed data. - Copyback caching means that memory writes will be held in an on-chip - cache and only written back to memory some time later. Saying Y - here will force supervisor (kernel) accesses to use writethrough - caching. Writethrough caching means that data is written to memory - straight away, so that cache and memory data always agree. - Writethrough caching is less efficient, but is needed for some - drivers on 68060 based systems where the 68060 bus snooping signal - is hardwired on. The 53c710 SCSI driver is known to suffer from - this problem. - -config ARCH_DISCONTIGMEM_ENABLE - def_bool !SINGLE_MEMORY_CHUNK - -config NODES_SHIFT - int - default "3" - depends on !SINGLE_MEMORY_CHUNK +if MMU +source arch/m68k/Kconfig.mmu +endif +if !MMU +source arch/m68k/Kconfig.nommu +endif source "mm/Kconfig" endmenu -menu "General setup" +menu "Executable file formats" source "fs/Kconfig.binfmt" -config ZORRO - bool "Amiga Zorro (AutoConfig) bus support" - depends on AMIGA - help - This enables support for the Zorro bus in the Amiga. If you have - expansion cards in your Amiga that conform to the Amiga - AutoConfig(tm) specification, say Y, otherwise N. Note that even - expansion cards that do not fit in the Zorro slots but fit in e.g. - the CPU slot may fall in this category, so you have to say Y to let - Linux use these. - -config AMIGA_PCMCIA - bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)" - depends on AMIGA && EXPERIMENTAL - help - Include support in the kernel for pcmcia on Amiga 1200 and Amiga - 600. If you intend to use pcmcia cards say Y; otherwise say N. - -config STRAM_PROC - bool "ST-RAM statistics in /proc" - depends on ATARI - help - Say Y here to report ST-RAM usage statistics in /proc/stram. - -config HEARTBEAT - bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40 - default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300 - help - Use the power-on LED on your machine as a load meter. The exact - behavior is platform-dependent, but normally the flash frequency is - a hyperbolic function of the 5-minute load average. - -# We have a dedicated heartbeat LED. :-) -config PROC_HARDWARE - bool "/proc/hardware support" - help - Say Y here to support the /proc/hardware file, which gives you - access to information about the machine you're running on, - including the model, CPU, MMU, clock speed, BogoMIPS rating, - and memory size. - -config ISA - bool - depends on Q40 || AMIGA_PCMCIA - default y - help - Find out whether you have ISA slots on your motherboard. ISA is the - name of a bus system, i.e. the way the CPU talks to the other stuff - inside your box. Other bus systems are PCI, EISA, MicroChannel - (MCA) or VESA. ISA is an older system, now being displaced by PCI; - newer boards don't support it. If you have ISA, say Y, otherwise N. - -config GENERIC_ISA_DMA - bool - depends on Q40 || AMIGA_PCMCIA - default y - -config ZONE_DMA - bool - default y +endmenu -source "drivers/pci/Kconfig" +if !MMU +menu "Power management options" -source "drivers/zorro/Kconfig" +config PM + bool "Power Management support" + help + Support processor power management modes endmenu +endif source "net/Kconfig" source "drivers/Kconfig" +if MMU + menu "Character devices" config ATARI_MFPSER @@ -627,6 +235,8 @@ config SERIAL_CONSOLE endmenu +endif + source "fs/Kconfig" source "arch/m68k/Kconfig.debug" diff --git a/arch/m68k/Kconfig.debug b/arch/m68k/Kconfig.debug index f53b6d5..2bdb1b0 100644 --- a/arch/m68k/Kconfig.debug +++ b/arch/m68k/Kconfig.debug @@ -2,4 +2,38 @@ menu "Kernel hacking" source "lib/Kconfig.debug" +if !MMU + +config FULLDEBUG + bool "Full Symbolic/Source Debugging support" + help + Enable debugging symbols on kernel build. + +config HIGHPROFILE + bool "Use fast second timer for profiling" + depends on COLDFIRE + help + Use a fast secondary clock to produce profiling information. + +config BOOTPARAM + bool 'Compiled-in Kernel Boot Parameter' + +config BOOTPARAM_STRING + string 'Kernel Boot Parameter' + default 'console=ttyS0,19200' + depends on BOOTPARAM + +config NO_KERNEL_MSG + bool "Suppress Kernel BUG Messages" + help + Do not output any debug BUG messages within the kernel. + +config BDM_DISABLE + bool "Disable BDM signals" + depends on (EXPERIMENTAL && COLDFIRE) + help + Disable the ColdFire CPU's BDM signals. + +endif + endmenu diff --git a/arch/m68k/Kconfig.mmu b/arch/m68k/Kconfig.mmu new file mode 100644 index 0000000..16539b1 --- /dev/null +++ b/arch/m68k/Kconfig.mmu @@ -0,0 +1,417 @@ +config GENERIC_IOMAP + bool + default y + +config ARCH_MAY_HAVE_PC_FDC + bool + depends on BROKEN && (Q40 || SUN3X) + default y + +config ARCH_USES_GETTIMEOFFSET + def_bool y + +config EISA + bool + ---help--- + The Extended Industry Standard Architecture (EISA) bus was + developed as an open alternative to the IBM MicroChannel bus. + + The EISA bus provided some of the features of the IBM MicroChannel + bus while maintaining backward compatibility with cards made for + the older ISA bus. The EISA bus saw limited use between 1988 and + 1995 when it was made obsolete by the PCI bus. + + Say Y here if you are building a kernel for an EISA-based machine. + + Otherwise, say N. + +config MCA + bool + help + MicroChannel Architecture is found in some IBM PS/2 machines and + laptops. It is a bus system similar to PCI or ISA. See + <file:Documentation/mca.txt> (and especially the web page given + there) before attempting to build an MCA bus kernel. + +config PCMCIA + tristate + ---help--- + Say Y here if you want to attach PCMCIA- or PC-cards to your Linux + computer. These are credit-card size devices such as network cards, + modems or hard drives often used with laptops computers. There are + actually two varieties of these cards: the older 16 bit PCMCIA cards + and the newer 32 bit CardBus cards. If you want to use CardBus + cards, you need to say Y here and also to "CardBus support" below. + + To use your PC-cards, you will need supporting software from David + Hinds' pcmcia-cs package (see the file <file:Documentation/Changes> + for location). Please also read the PCMCIA-HOWTO, available from + <http://www.tldp.org/docs.html#howto>. + + To compile this driver as modules, choose M here: the + modules will be called pcmcia_core and ds. + +config AMIGA + bool "Amiga support" + select MMU_MOTOROLA if MMU + help + This option enables support for the Amiga series of computers. If + you plan to use this kernel on an Amiga, say Y here and browse the + material available in <file:Documentation/m68k>; otherwise say N. + +config ATARI + bool "Atari support" + select MMU_MOTOROLA if MMU + help + This option enables support for the 68000-based Atari series of + computers (including the TT, Falcon and Medusa). If you plan to use + this kernel on an Atari, say Y here and browse the material + available in <file:Documentation/m68k>; otherwise say N. + +config MAC + bool "Macintosh support" + select MMU_MOTOROLA if MMU + help + This option enables support for the Apple Macintosh series of + computers (yes, there is experimental support now, at least for part + of the series). + + Say N unless you're willing to code the remaining necessary support. + ;) + +config NUBUS + bool + depends on MAC + default y + +config M68K_L2_CACHE + bool + depends on MAC + default y + +config APOLLO + bool "Apollo support" + select MMU_MOTOROLA if MMU + help + Say Y here if you want to run Linux on an MC680x0-based Apollo + Domain workstation such as the DN3500. + +config VME + bool "VME (Motorola and BVM) support" + select MMU_MOTOROLA if MMU + help + Say Y here if you want to build a kernel for a 680x0 based VME + board. Boards currently supported include Motorola boards MVME147, + MVME162, MVME166, MVME167, MVME172, and MVME177. BVME4000 and + BVME6000 boards from BVM Ltd are also supported. + +config MVME147 + bool "MVME147 support" + depends on VME + help + Say Y to include support for early Motorola VME boards. This will + build a kernel which can run on MVME147 single-board computers. If + you select this option you will have to select the appropriate + drivers for SCSI, Ethernet and serial ports later on. + +config MVME16x + bool "MVME162, 166 and 167 support" + depends on VME + help + Say Y to include support for Motorola VME boards. This will build a + kernel which can run on MVME162, MVME166, MVME167, MVME172, and + MVME177 boards. If you select this option you will have to select + the appropriate drivers for SCSI, Ethernet and serial ports later + on. + +config BVME6000 + bool "BVME4000 and BVME6000 support" + depends on VME + help + Say Y to include support for VME boards from BVM Ltd. This will + build a kernel which can run on BVME4000 and BVME6000 boards. If + you select this option you will have to select the appropriate + drivers for SCSI, Ethernet and serial ports later on. + +config HP300 + bool "HP9000/300 and HP9000/400 support" + select MMU_MOTOROLA if MMU + help + This option enables support for the HP9000/300 and HP9000/400 series + of workstations. Support for these machines is still somewhat + experimental. If you plan to try to use the kernel on such a machine + say Y here. + Everybody else says N. + +config DIO + bool "DIO bus support" + depends on HP300 + default y + help + Say Y here to enable support for the "DIO" expansion bus used in + HP300 machines. If you are using such a system you almost certainly + want this. + +config SUN3X + bool "Sun3x support" + select MMU_MOTOROLA if MMU + select M68030 + help + This option enables support for the Sun 3x series of workstations. + Be warned that this support is very experimental. + Note that Sun 3x kernels are not compatible with Sun 3 hardware. + General Linux information on the Sun 3x series (now discontinued) + is at <http://www.angelfire.com/ca2/tech68k/sun3.html>. + + If you don't want to compile a kernel for a Sun 3x, say N. + +config Q40 + bool "Q40/Q60 support" + select MMU_MOTOROLA if MMU + help + The Q40 is a Motorola 68040-based successor to the Sinclair QL + manufactured in Germany. There is an official Q40 home page at + <http://www.q40.de/>. This option enables support for the Q40 and + Q60. Select your CPU below. For 68LC060 don't forget to enable FPU + emulation. + +config SUN3 + bool "Sun3 support" + depends on !MMU_MOTOROLA + select MMU_SUN3 if MMU + select M68020 + help + This option enables support for the Sun 3 series of workstations + (3/50, 3/60, 3/1xx, 3/2xx systems). Enabling this option requires + that all other hardware types must be disabled, as Sun 3 kernels + are incompatible with all other m68k targets (including Sun 3x!). + + If you don't want to compile a kernel exclusively for a Sun 3, say N. + +config NATFEAT + bool "ARAnyM emulator support" + depends on ATARI + help + This option enables support for ARAnyM native features, such as + access to a disk image as /dev/hda. + +config NFBLOCK + tristate "NatFeat block device support" + depends on BLOCK && NATFEAT + help + Say Y to include support for the ARAnyM NatFeat block device + which allows direct access to the hard drives without using + the hardware emulation. + +config NFCON + tristate "NatFeat console driver" + depends on NATFEAT + help + Say Y to include support for the ARAnyM NatFeat console driver + which allows the console output to be redirected to the stderr + output of ARAnyM. + +config NFETH + tristate "NatFeat Ethernet support" + depends on NET_ETHERNET && NATFEAT + help + Say Y to include support for the ARAnyM NatFeat network device + which will emulate a regular ethernet device while presenting an + ethertap device to the host system. + +comment "Processor type" + +config M68020 + bool "68020 support" + help + If you anticipate running this kernel on a computer with a MC68020 + processor, say Y. Otherwise, say N. Note that the 68020 requires a + 68851 MMU (Memory Management Unit) to run Linux/m68k, except on the + Sun 3, which provides its own version. + +config M68030 + bool "68030 support" + depends on !MMU_SUN3 + help + If you anticipate running this kernel on a computer with a MC68030 + processor, say Y. Otherwise, say N. Note that a MC68EC030 will not + work, as it does not include an MMU (Memory Management Unit). + +config M68040 + bool "68040 support" + depends on !MMU_SUN3 + help + If you anticipate running this kernel on a computer with a MC68LC040 + or MC68040 processor, say Y. Otherwise, say N. Note that an + MC68EC040 will not work, as it does not include an MMU (Memory + Management Unit). + +config M68060 + bool "68060 support" + depends on !MMU_SUN3 + help + If you anticipate running this kernel on a computer with a MC68060 + processor, say Y. Otherwise, say N. + +config MMU_MOTOROLA + bool + +config MMU_SUN3 + bool + depends on MMU && !MMU_MOTOROLA + +config M68KFPU_EMU + bool "Math emulation support (EXPERIMENTAL)" + depends on EXPERIMENTAL + help + At some point in the future, this will cause floating-point math + instructions to be emulated by the kernel on machines that lack a + floating-point math coprocessor. Thrill-seekers and chronically + sleep-deprived psychotic hacker types can say Y now, everyone else + should probably wait a while. + +config M68KFPU_EMU_EXTRAPREC + bool "Math emulation extra precision" + depends on M68KFPU_EMU + help + The fpu uses normally a few bit more during calculations for + correct rounding, the emulator can (often) do the same but this + extra calculation can cost quite some time, so you can disable + it here. The emulator will then "only" calculate with a 64 bit + mantissa and round slightly incorrect, what is more than enough + for normal usage. + +config M68KFPU_EMU_ONLY + bool "Math emulation only kernel" + depends on M68KFPU_EMU + help + This option prevents any floating-point instructions from being + compiled into the kernel, thereby the kernel doesn't save any + floating point context anymore during task switches, so this + kernel will only be usable on machines without a floating-point + math coprocessor. This makes the kernel a bit faster as no tests + needs to be executed whether a floating-point instruction in the + kernel should be executed or not. + +config ADVANCED + bool "Advanced configuration options" + ---help--- + This gives you access to some advanced options for the CPU. The + defaults should be fine for most users, but these options may make + it possible for you to improve performance somewhat if you know what + you are doing. + + Note that the answer to this question won't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about these options. + + Most users should say N to this question. + +config RMW_INSNS + bool "Use read-modify-write instructions" + depends on ADVANCED + ---help--- + This allows to use certain instructions that work with indivisible + read-modify-write bus cycles. While this is faster than the + workaround of disabling interrupts, it can conflict with DMA + ( = direct memory access) on many Amiga systems, and it is also said + to destabilize other machines. It is very likely that this will + cause serious problems on any Amiga or Atari Medusa if set. The only + configuration where it should work are 68030-based Ataris, where it + apparently improves performance. But you've been warned! Unless you + really know what you are doing, say N. Try Y only if you're quite + adventurous. + +config SINGLE_MEMORY_CHUNK + bool "Use one physical chunk of memory only" if ADVANCED && !SUN3 + default y if SUN3 + select NEED_MULTIPLE_NODES + help + Ignore all but the first contiguous chunk of physical memory for VM + purposes. This will save a few bytes kernel size and may speed up + some operations. Say N if not sure. + +config 060_WRITETHROUGH + bool "Use write-through caching for 68060 supervisor accesses" + depends on ADVANCED && M68060 + ---help--- + The 68060 generally uses copyback caching of recently accessed data. + Copyback caching means that memory writes will be held in an on-chip + cache and only written back to memory some time later. Saying Y + here will force supervisor (kernel) accesses to use writethrough + caching. Writethrough caching means that data is written to memory + straight away, so that cache and memory data always agree. + Writethrough caching is less efficient, but is needed for some + drivers on 68060 based systems where the 68060 bus snooping signal + is hardwired on. The 53c710 SCSI driver is known to suffer from + this problem. + +config ARCH_DISCONTIGMEM_ENABLE + def_bool !SINGLE_MEMORY_CHUNK + +config NODES_SHIFT + int + default "3" + depends on !SINGLE_MEMORY_CHUNK + +config ZORRO + bool "Amiga Zorro (AutoConfig) bus support" + depends on AMIGA + help + This enables support for the Zorro bus in the Amiga. If you have + expansion cards in your Amiga that conform to the Amiga + AutoConfig(tm) specification, say Y, otherwise N. Note that even + expansion cards that do not fit in the Zorro slots but fit in e.g. + the CPU slot may fall in this category, so you have to say Y to let + Linux use these. + +config AMIGA_PCMCIA + bool "Amiga 1200/600 PCMCIA support (EXPERIMENTAL)" + depends on AMIGA && EXPERIMENTAL + help + Include support in the kernel for pcmcia on Amiga 1200 and Amiga + 600. If you intend to use pcmcia cards say Y; otherwise say N. + +config STRAM_PROC + bool "ST-RAM statistics in /proc" + depends on ATARI + help + Say Y here to report ST-RAM usage statistics in /proc/stram. + +config HEARTBEAT + bool "Use power LED as a heartbeat" if AMIGA || APOLLO || ATARI || MAC ||Q40 + default y if !AMIGA && !APOLLO && !ATARI && !MAC && !Q40 && HP300 + help + Use the power-on LED on your machine as a load meter. The exact + behavior is platform-dependent, but normally the flash frequency is + a hyperbolic function of the 5-minute load average. + +# We have a dedicated heartbeat LED. :-) +config PROC_HARDWARE + bool "/proc/hardware support" + help + Say Y here to support the /proc/hardware file, which gives you + access to information about the machine you're running on, + including the model, CPU, MMU, clock speed, BogoMIPS rating, + and memory size. + +config ISA + bool + depends on Q40 || AMIGA_PCMCIA + default y + help + Find out whether you have ISA slots on your motherboard. ISA is the + name of a bus system, i.e. the way the CPU talks to the other stuff + inside your box. Other bus systems are PCI, EISA, MicroChannel + (MCA) or VESA. ISA is an older system, now being displaced by PCI; + newer boards don't support it. If you have ISA, say Y, otherwise N. + +config GENERIC_ISA_DMA + bool + depends on Q40 || AMIGA_PCMCIA + default y + +source "drivers/pci/Kconfig" + +source "drivers/zorro/Kconfig" + diff --git a/arch/m68k/Kconfig.nommu b/arch/m68k/Kconfig.nommu new file mode 100644 index 0000000..273bcca --- /dev/null +++ b/arch/m68k/Kconfig.nommu @@ -0,0 +1,750 @@ +config FPU + bool + default n + +config GENERIC_FIND_NEXT_BIT + bool + default y + +config GENERIC_GPIO + bool + default n + +config GENERIC_CMOS_UPDATE + bool + default y + +config GENERIC_CLOCKEVENTS + bool + default n + +config COLDFIRE_SW_A7 + bool + default n + +config HAVE_CACHE_SPLIT + bool + +config HAVE_CACHE_CB + bool + +config HAVE_MBAR + bool + +config HAVE_IPSBAR + bool + +choice + prompt "CPU" + default M68EZ328 + +config M68328 + bool "MC68328" + help + Motorola 68328 processor support. + +config M68EZ328 + bool "MC68EZ328" + help + Motorola 68EX328 processor support. + +config M68VZ328 + bool "MC68VZ328" + help + Motorola 68VZ328 processor support. + +config M68360 + bool "MC68360" + help + Motorola 68360 processor support. + +config M5206 + bool "MCF5206" + select COLDFIRE_SW_A7 + select HAVE_MBAR + help + Motorola ColdFire 5206 processor support. + +config M5206e + bool "MCF5206e" + select COLDFIRE_SW_A7 + select HAVE_MBAR + help + Motorola ColdFire 5206e processor support. + +config M520x + bool "MCF520x" + select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT + help + Freescale Coldfire 5207/5208 processor support. + +config M523x + bool "MCF523x" + select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT + select HAVE_IPSBAR + help + Freescale Coldfire 5230/1/2/4/5 processor support + +config M5249 + bool "MCF5249" + select COLDFIRE_SW_A7 + select HAVE_MBAR + help + Motorola ColdFire 5249 processor support. + +config M5271 + bool "MCF5271" + select HAVE_CACHE_SPLIT + select HAVE_IPSBAR + help + Freescale (Motorola) ColdFire 5270/5271 processor support. + +config M5272 + bool "MCF5272" + select COLDFIRE_SW_A7 + select HAVE_MBAR + help + Motorola ColdFire 5272 processor support. + +config M5275 + bool "MCF5275" + select HAVE_CACHE_SPLIT + select HAVE_IPSBAR + help + Freescale (Motorola) ColdFire 5274/5275 processor support. + +config M528x + bool "MCF528x" + select GENERIC_CLOCKEVENTS + select HAVE_CACHE_SPLIT + select HAVE_IPSBAR + help + Motorola ColdFire 5280/5282 processor support. + +config M5307 + bool "MCF5307" + select COLDFIRE_SW_A7 + select HAVE_CACHE_CB + select HAVE_MBAR + help + Motorola ColdFire 5307 processor support. + +config M532x + bool "MCF532x" + select HAVE_CACHE_CB + help + Freescale (Motorola) ColdFire 532x processor support. + +config M5407 + bool "MCF5407" + select COLDFIRE_SW_A7 + select HAVE_CACHE_CB + select HAVE_MBAR + help + Motorola ColdFire 5407 processor support. + +config M547x + bool "MCF547x" + select HAVE_CACHE_CB + select HAVE_MBAR + help + Freescale ColdFire 5470/5471/5472/5473/5474/5475 processor support. + +config M548x + bool "MCF548x" + select HAVE_CACHE_CB + select HAVE_MBAR + help + Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support. + +endchoice + +config M527x + bool + depends on (M5271 || M5275) + select GENERIC_CLOCKEVENTS + default y + +config M54xx + bool + depends on (M548x || M547x) + default y + +config COLDFIRE + bool + depends on (M5206 || M5206e || M520x || M523x || M5249 || M527x || M5272 || M528x || M5307 || M532x || M5407 || M54xx) + select GENERIC_GPIO + select ARCH_REQUIRE_GPIOLIB + default y + +config CLOCK_SET + bool "Enable setting the CPU clock frequency" + default n + help + On some CPU's you do not need to know what the core CPU clock + frequency is. On these you can disable clock setting. On some + traditional 68K parts, and on all ColdFire parts you need to set + the appropriate CPU clock frequency. On these devices many of the + onboard peripherals derive their timing from the master CPU clock + frequency. + +config CLOCK_FREQ + int "Set the core clock frequency" + default "66666666" + depends on CLOCK_SET + help + Define the CPU clock frequency in use. This is the core clock + frequency, it may or may not be the same as the external clock + crystal fitted to your board. Some processors have an internal + PLL and can have their frequency programmed at run time, others + use internal dividers. In general the kernel won't setup a PLL + if it is fitted (there are some exceptions). This value will be + specific to the exact CPU that you are using. + +config OLDMASK + bool "Old mask 5307 (1H55J) silicon" + depends on M5307 + help + Build support for the older revision ColdFire 5307 silicon. + Specifically this is the 1H55J mask revision. + +if HAVE_CACHE_SPLIT +choice + prompt "Split Cache Configuration" + default CACHE_I + +config CACHE_I + bool "Instruction" + help + Use all of the ColdFire CPU cache memory as an instruction cache. + +config CACHE_D + bool "Data" + help + Use all of the ColdFire CPU cache memory as a data cache. + +config CACHE_BOTH + bool "Both" + help + Split the ColdFire CPU cache, and use half as an instruction cache + and half as a data cache. +endchoice +endif + +if HAVE_CACHE_CB +choice + prompt "Data cache mode" + default CACHE_WRITETHRU + +config CACHE_WRITETHRU + bool "Write-through" + help + The ColdFire CPU cache is set into Write-through mode. + +config CACHE_COPYBACK + bool "Copy-back" + help + The ColdFire CPU cache is set into Copy-back mode. +endchoice +endif + +comment "Platform" + +config PILOT3 + bool "Pilot 1000/5000, PalmPilot Personal/Pro, or PalmIII support" + depends on M68328 + help + Support for the Palm Pilot 1000/5000, Personal/Pro and PalmIII. + +config XCOPILOT_BUGS + bool "(X)Copilot support" + depends on PILOT3 + help + Support the bugs of Xcopilot. + +config UC5272 + bool 'Arcturus Networks uC5272 dimm board support' + depends on M5272 + help + Support for the Arcturus Networks uC5272 dimm board. + +config UC5282 + bool "Arcturus Networks uC5282 board support" + depends on M528x + help + Support for the Arcturus Networks uC5282 dimm board. + +config UCSIMM + bool "uCsimm module support" + depends on M68EZ328 + help + Support for the Arcturus Networks uCsimm module. + +config UCDIMM + bool "uDsimm module support" + depends on M68VZ328 + help + Support for the Arcturus Networks uDsimm module. + +config DRAGEN2 + bool "DragenEngine II board support" + depends on M68VZ328 + help + Support for the DragenEngine II board. + +config DIRECT_IO_ACCESS + bool "Allow user to access IO directly" + depends on (UCSIMM || UCDIMM || DRAGEN2) + help + Disable the CPU internal registers protection in user mode, + to allow a user application to read/write them. + +config INIT_LCD + bool "Initialize LCD" + depends on (UCSIMM || UCDIMM || DRAGEN2) + help + Initialize the LCD controller of the 68x328 processor. + +config MEMORY_RESERVE + int "Memory reservation (MiB)" + depends on (UCSIMM || UCDIMM) + help + Reserve certain memory regions on 68x328 based boards. + +config UCQUICC + bool "Lineo uCquicc board support" + depends on M68360 + help + Support for the Lineo uCquicc board. + +config ARN5206 + bool "Arnewsh 5206 board support" + depends on M5206 + help + Support for the Arnewsh 5206 board. + +config M5206eC3 + bool "Motorola M5206eC3 board support" + depends on M5206e + help + Support for the Motorola M5206eC3 board. + +config ELITE + bool "Motorola M5206eLITE board support" + depends on M5206e + help + Support for the Motorola M5206eLITE board. + +config M5208EVB + bool "Freescale M5208EVB board support" + depends on M520x + help + Support for the Freescale Coldfire M5208EVB. + +config M5235EVB + bool "Freescale M5235EVB support" + depends on M523x + help + Support for the Freescale M5235EVB board. + +config M5249C3 + bool "Motorola M5249C3 board support" + depends on M5249 + help + Support for the Motorola M5249C3 board. + +config M5271EVB + bool "Freescale (Motorola) M5271EVB board support" + depends on M5271 + help + Support for the Freescale (Motorola) M5271EVB board. + +config M5275EVB + bool "Freescale (Motorola) M5275EVB board support" + depends on M5275 + help + Support for the Freescale (Motorola) M5275EVB board. + +config M5272C3 + bool "Motorola M5272C3 board support" + depends on M5272 + help + Support for the Motorola M5272C3 board. + +config COBRA5272 + bool "senTec COBRA5272 board support" + depends on M5272 + help + Support for the senTec COBRA5272 board. + +config AVNET5282 + bool "Avnet 5282 board support" + depends on M528x + help + Support for the Avnet 5282 board. + +config M5282EVB + bool "Motorola M5282EVB board support" + depends on M528x + help + Support for the Motorola M5282EVB board. + +config COBRA5282 + bool "senTec COBRA5282 board support" + depends on M528x + help + Support for the senTec COBRA5282 board. + +config SOM5282EM + bool "EMAC.Inc SOM5282EM board support" + depends on M528x + help + Support for the EMAC.Inc SOM5282EM module. + +config WILDFIRE + bool "Intec Automation Inc. WildFire board support" + depends on M528x + help + Support for the Intec Automation Inc. WildFire. + +config WILDFIREMOD + bool "Intec Automation Inc. WildFire module support" + depends on M528x + help + Support for the Intec Automation Inc. WildFire module. + +config ARN5307 + bool "Arnewsh 5307 board support" + depends on M5307 + help + Support for the Arnewsh 5307 board. + +config M5307C3 + bool "Motorola M5307C3 board support" + depends on M5307 + help + Support for the Motorola M5307C3 board. + +config SECUREEDGEMP3 + bool "SnapGear SecureEdge/MP3 platform support" + depends on M5307 + help + Support for the SnapGear SecureEdge/MP3 platform. + +config M5329EVB + bool "Freescale (Motorola) M5329EVB board support" + depends on M532x + help + Support for the Freescale (Motorola) M5329EVB board. + +config COBRA5329 + bool "senTec COBRA5329 board support" + depends on M532x + help + Support for the senTec COBRA5329 board. + +config M5407C3 + bool "Motorola M5407C3 board support" + depends on M5407 + help + Support for the Motorola M5407C3 board. + +config FIREBEE + bool "FireBee board support" + depends on M547x + help + Support for the FireBee ColdFire 5475 based board. + +config CLEOPATRA + bool "Feith CLEOPATRA board support" + depends on (M5307 || M5407) + help + Support for the Feith Cleopatra boards. + +config CANCam + bool "Feith CANCam board support" + depends on M5272 + help + Support for the Feith CANCam board. + +config SCALES + bool "Feith SCALES board support" + depends on M5272 + help + Support for the Feith SCALES board. + +config NETtel + bool "SecureEdge/NETtel board support" + depends on (M5206e || M5272 || M5307) + help + Support for the SnapGear NETtel/SecureEdge/SnapGear boards. + +config SNAPGEAR + bool "SnapGear router board support" + depends on NETtel + help + Special additional support for SnapGear router boards. + +config CPU16B + bool "Sneha Technologies S.L. Sarasvati board support" + depends on M5272 + help + Support for the SNEHA CPU16B board. + +config MOD5272 + bool "Netburner MOD-5272 board support" + depends on M5272 + help + Support for the Netburner MOD-5272 board. + +config SAVANTrosie1 + bool "Savant Rosie1 board support" + depends on M523x + help + Support for the Savant Rosie1 board. + +config ROMFS_FROM_ROM + bool "ROMFS image not RAM resident" + depends on (NETtel || SNAPGEAR) + help + The ROMfs filesystem will stay resident in the FLASH/ROM, not be + moved into RAM. + +config PILOT + bool + default y + depends on (PILOT3 || PILOT5) + +config ARNEWSH + bool + default y + depends on (ARN5206 || ARN5307) + +config FREESCALE + bool + default y + depends on (M5206eC3 || M5208EVB || M5235EVB || M5249C3 || M5271EVB || M5272C3 || M5275EVB || M5282EVB || M5307C3 || M5329EVB || M5407C3) + +config HW_FEITH + bool + default y + depends on (CLEOPATRA || CANCam || SCALES) + +config senTec + bool + default y + depends on (COBRA5272 || COBRA5282) + +config EMAC_INC + bool + default y + depends on (SOM5282EM) + +config SNEHA + bool + default y + depends on CPU16B + +config SAVANT + bool + default y + depends on SAVANTrosie1 + +config AVNET + bool + default y + depends on (AVNET5282) + +config UBOOT + bool "Support for U-Boot command line parameters" + help + If you say Y here kernel will try to collect command + line parameters from the initial u-boot stack. + default n + +config 4KSTACKS + bool "Use 4Kb for kernel stacks instead of 8Kb" + default y + help + If you say Y here the kernel will use a 4Kb stacksize for the + kernel stack attached to each process/thread. This facilitates + running more threads on a system and also reduces the pressure + on the VM subsystem for higher order allocations. + +comment "RAM configuration" + +config RAMBASE + hex "Address of the base of RAM" + default "0" + help + Define the address that RAM starts at. On many platforms this is + 0, the base of the address space. And this is the default. Some + platforms choose to setup their RAM at other addresses within the + processor address space. + +config RAMSIZE + hex "Size of RAM (in bytes), or 0 for automatic" + default "0x400000" + help + Define the size of the system RAM. If you select 0 then the + kernel will try to probe the RAM size at runtime. This is not + supported on all CPU types. + +config VECTORBASE + hex "Address of the base of system vectors" + default "0" + help + Define the address of the system vectors. Commonly this is + put at the start of RAM, but it doesn't have to be. On ColdFire + platforms this address is programmed into the VBR register, thus + actually setting the address to use. + +config MBAR + hex "Address of the MBAR (internal peripherals)" + default "0x10000000" + depends on HAVE_MBAR + help + Define the address of the internal system peripherals. This value + is set in the processors MBAR register. This is generally setup by + the boot loader, and will not be written by the kernel. By far most + ColdFire boards use the default 0x10000000 value, so if unsure then + use this. + +config IPSBAR + hex "Address of the IPSBAR (internal peripherals)" + default "0x40000000" + depends on HAVE_IPSBAR + help + Define the address of the internal system peripherals. This value + is set in the processors IPSBAR register. This is generally setup by + the boot loader, and will not be written by the kernel. By far most + ColdFire boards use the default 0x40000000 value, so if unsure then + use this. + +config KERNELBASE + hex "Address of the base of kernel code" + default "0x400" + help + Typically on m68k systems the kernel will not start at the base + of RAM, but usually some small offset from it. Define the start + address of the kernel here. The most common setup will have the + processor vectors at the base of RAM and then the start of the + kernel. On some platforms some RAM is reserved for boot loaders + and the kernel starts after that. The 0x400 default was based on + a system with the RAM based at address 0, and leaving enough room + for the theoretical maximum number of 256 vectors. + +choice + prompt "RAM bus width" + default RAMAUTOBIT + +config RAMAUTOBIT + bool "AUTO" + help + Select the physical RAM data bus size. Not needed on most platforms, + so you can generally choose AUTO. + +config RAM8BIT + bool "8bit" + help + Configure RAM bus to be 8 bits wide. + +config RAM16BIT + bool "16bit" + help + Configure RAM bus to be 16 bits wide. + +config RAM32BIT + bool "32bit" + help + Configure RAM bus to be 32 bits wide. + +endchoice + +comment "ROM configuration" + +config ROM + bool "Specify ROM linker regions" + default n + help + Define a ROM region for the linker script. This creates a kernel + that can be stored in flash, with possibly the text, and data + regions being copied out to RAM at startup. + +config ROMBASE + hex "Address of the base of ROM device" + default "0" + depends on ROM + help + Define the address that the ROM region starts at. Some platforms + use this to set their chip select region accordingly for the boot + device. + +config ROMVEC + hex "Address of the base of the ROM vectors" + default "0" + depends on ROM + help + This is almost always the same as the base of the ROM. Since on all + 68000 type variants the vectors are at the base of the boot device + on system startup. + +config ROMVECSIZE + hex "Size of ROM vector region (in bytes)" + default "0x400" + depends on ROM + help + Define the size of the vector region in ROM. For most 68000 + variants this would be 0x400 bytes in size. Set to 0 if you do + not want a vector region at the start of the ROM. + +config ROMSTART + hex "Address of the base of system image in ROM" + default "0x400" + depends on ROM + help + Define the start address of the system image in ROM. Commonly this + is strait after the ROM vectors. + +config ROMSIZE + hex "Size of the ROM device" + default "0x100000" + depends on ROM + help + Size of the ROM device. On some platforms this is used to setup + the chip select that controls the boot ROM device. + +choice + prompt "Kernel executes from" + ---help--- + Choose the memory type that the kernel will be running in. + +config RAMKERNEL + bool "RAM" + help + The kernel will be resident in RAM when running. + +config ROMKERNEL + bool "ROM" + help + The kernel will be resident in FLASH/ROM when running. This is + often referred to as Execute-in-Place (XIP), since the kernel + code executes from the position it is stored in the FLASH/ROM. + +endchoice + +if COLDFIRE +source "kernel/Kconfig.preempt" +endif + +source "kernel/time/Kconfig" + +config ISA_DMA_API + bool + depends on !M5272 + default y + +source "drivers/pcmcia/Kconfig" + diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile index b793163..be46cad 100644 --- a/arch/m68k/Makefile +++ b/arch/m68k/Makefile @@ -1,123 +1,7 @@ -# -# m68k/Makefile -# -# This file is included by the global makefile so that you can add your own -# architecture-specific flags and dependencies. Remember to do have actions -# for "archclean" and "archdep" for cleaning up and making dependencies for -# this architecture -# -# This file is subject to the terms and conditions of the GNU General Public -# License. See the file "COPYING" in the main directory of this archive -# for more details. -# -# Copyright (C) 1994 by Hamish Macdonald -# - KBUILD_DEFCONFIG := multi_defconfig -# override top level makefile -AS += -m68020 -LDFLAGS := -m m68kelf -KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/m68k/kernel/module.lds -ifneq ($(SUBARCH),$(ARCH)) - ifeq ($(CROSS_COMPILE),) - CROSS_COMPILE := $(call cc-cross-prefix, \ - m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-) - endif -endif - -ifdef CONFIG_SUN3 -LDFLAGS_vmlinux = -N -endif - -CHECKFLAGS += -D__mc68000__ - -# without -fno-strength-reduce the 53c7xx.c driver fails ;-( -KBUILD_CFLAGS += -pipe -fno-strength-reduce -ffixed-a2 - -# enable processor switch if compiled only for a single cpu -ifndef CONFIG_M68020 -ifndef CONFIG_M68030 - -ifndef CONFIG_M68060 -KBUILD_CFLAGS += -m68040 -endif - -ifndef CONFIG_M68040 -KBUILD_CFLAGS += -m68060 -endif - -endif -endif - -ifdef CONFIG_KGDB -# If configured for kgdb support, include debugging infos and keep the -# frame pointer -KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g -endif - -ifndef CONFIG_SUN3 -head-y := arch/m68k/kernel/head.o +ifdef CONFIG_MMU +include $(srctree)/arch/m68k/Makefile_mm else -head-y := arch/m68k/kernel/sun3-head.o +include $(srctree)/arch/m68k/Makefile_no endif - -core-y += arch/m68k/kernel/ arch/m68k/mm/ -libs-y += arch/m68k/lib/ - -core-$(CONFIG_Q40) += arch/m68k/q40/ -core-$(CONFIG_AMIGA) += arch/m68k/amiga/ -core-$(CONFIG_ATARI) += arch/m68k/atari/ -core-$(CONFIG_MAC) += arch/m68k/mac/ -core-$(CONFIG_HP300) += arch/m68k/hp300/ -core-$(CONFIG_APOLLO) += arch/m68k/apollo/ -core-$(CONFIG_MVME147) += arch/m68k/mvme147/ -core-$(CONFIG_MVME16x) += arch/m68k/mvme16x/ -core-$(CONFIG_BVME6000) += arch/m68k/bvme6000/ -core-$(CONFIG_SUN3X) += arch/m68k/sun3x/ arch/m68k/sun3/ -core-$(CONFIG_SUN3) += arch/m68k/sun3/ arch/m68k/sun3/prom/ -core-$(CONFIG_NATFEAT) += arch/m68k/emu/ -core-$(CONFIG_M68040) += arch/m68k/fpsp040/ -core-$(CONFIG_M68060) += arch/m68k/ifpsp060/ -core-$(CONFIG_M68KFPU_EMU) += arch/m68k/math-emu/ - -all: zImage - -lilo: vmlinux - if [ -f $(INSTALL_PATH)/vmlinux ]; then mv -f $(INSTALL_PATH)/vmlinux $(INSTALL_PATH)/vmlinux.old; fi - if [ -f $(INSTALL_PATH)/System.map ]; then mv -f $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi - cat vmlinux > $(INSTALL_PATH)/vmlinux - cp System.map $(INSTALL_PATH)/System.map - if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi - -zImage compressed: vmlinux.gz - -vmlinux.gz: vmlinux - -ifndef CONFIG_KGDB - cp vmlinux vmlinux.tmp - $(STRIP) vmlinux.tmp - gzip -9c vmlinux.tmp >vmlinux.gz - rm vmlinux.tmp -else - gzip -9c vmlinux >vmlinux.gz -endif - -bzImage: vmlinux.bz2 - -vmlinux.bz2: vmlinux - -ifndef CONFIG_KGDB - cp vmlinux vmlinux.tmp - $(STRIP) vmlinux.tmp - bzip2 -1c vmlinux.tmp >vmlinux.bz2 - rm vmlinux.tmp -else - bzip2 -1c vmlinux >vmlinux.bz2 -endif - -archclean: - rm -f vmlinux.gz vmlinux.bz2 - -install: - sh $(srctree)/arch/m68k/install.sh $(KERNELRELEASE) vmlinux.gz System.map "$(INSTALL_PATH)" diff --git a/arch/m68k/Makefile_mm b/arch/m68k/Makefile_mm new file mode 100644 index 0000000..d449b6d --- /dev/null +++ b/arch/m68k/Makefile_mm @@ -0,0 +1,121 @@ +# +# m68k/Makefile +# +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. Remember to do have actions +# for "archclean" and "archdep" for cleaning up and making dependencies for +# this architecture +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# Copyright (C) 1994 by Hamish Macdonald +# + +# override top level makefile +AS += -m68020 +LDFLAGS := -m m68kelf +KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/m68k/kernel/module.lds +ifneq ($(SUBARCH),$(ARCH)) + ifeq ($(CROSS_COMPILE),) + CROSS_COMPILE := $(call cc-cross-prefix, \ + m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-) + endif +endif + +ifdef CONFIG_SUN3 +LDFLAGS_vmlinux = -N +endif + +CHECKFLAGS += -D__mc68000__ + +# without -fno-strength-reduce the 53c7xx.c driver fails ;-( +KBUILD_CFLAGS += -pipe -fno-strength-reduce -ffixed-a2 + +# enable processor switch if compiled only for a single cpu +ifndef CONFIG_M68020 +ifndef CONFIG_M68030 + +ifndef CONFIG_M68060 +KBUILD_CFLAGS += -m68040 +endif + +ifndef CONFIG_M68040 +KBUILD_CFLAGS += -m68060 +endif + +endif +endif + +ifdef CONFIG_KGDB +# If configured for kgdb support, include debugging infos and keep the +# frame pointer +KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g +endif + +ifndef CONFIG_SUN3 +head-y := arch/m68k/kernel/head.o +else +head-y := arch/m68k/kernel/sun3-head.o +endif + +core-y += arch/m68k/kernel/ arch/m68k/mm/ +libs-y += arch/m68k/lib/ + +core-$(CONFIG_Q40) += arch/m68k/q40/ +core-$(CONFIG_AMIGA) += arch/m68k/amiga/ +core-$(CONFIG_ATARI) += arch/m68k/atari/ +core-$(CONFIG_MAC) += arch/m68k/mac/ +core-$(CONFIG_HP300) += arch/m68k/hp300/ +core-$(CONFIG_APOLLO) += arch/m68k/apollo/ +core-$(CONFIG_MVME147) += arch/m68k/mvme147/ +core-$(CONFIG_MVME16x) += arch/m68k/mvme16x/ +core-$(CONFIG_BVME6000) += arch/m68k/bvme6000/ +core-$(CONFIG_SUN3X) += arch/m68k/sun3x/ arch/m68k/sun3/ +core-$(CONFIG_SUN3) += arch/m68k/sun3/ arch/m68k/sun3/prom/ +core-$(CONFIG_NATFEAT) += arch/m68k/emu/ +core-$(CONFIG_M68040) += arch/m68k/fpsp040/ +core-$(CONFIG_M68060) += arch/m68k/ifpsp060/ +core-$(CONFIG_M68KFPU_EMU) += arch/m68k/math-emu/ + +all: zImage + +lilo: vmlinux + if [ -f $(INSTALL_PATH)/vmlinux ]; then mv -f $(INSTALL_PATH)/vmlinux $(INSTALL_PATH)/vmlinux.old; fi + if [ -f $(INSTALL_PATH)/System.map ]; then mv -f $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi + cat vmlinux > $(INSTALL_PATH)/vmlinux + cp System.map $(INSTALL_PATH)/System.map + if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi + +zImage compressed: vmlinux.gz + +vmlinux.gz: vmlinux + +ifndef CONFIG_KGDB + cp vmlinux vmlinux.tmp + $(STRIP) vmlinux.tmp + gzip -9c vmlinux.tmp >vmlinux.gz + rm vmlinux.tmp +else + gzip -9c vmlinux >vmlinux.gz +endif + +bzImage: vmlinux.bz2 + +vmlinux.bz2: vmlinux + +ifndef CONFIG_KGDB + cp vmlinux vmlinux.tmp + $(STRIP) vmlinux.tmp + bzip2 -1c vmlinux.tmp >vmlinux.bz2 + rm vmlinux.tmp +else + bzip2 -1c vmlinux >vmlinux.bz2 +endif + +archclean: + rm -f vmlinux.gz vmlinux.bz2 + +install: + sh $(srctree)/arch/m68k/install.sh $(KERNELRELEASE) vmlinux.gz System.map "$(INSTALL_PATH)" diff --git a/arch/m68k/Makefile_no b/arch/m68k/Makefile_no new file mode 100644 index 0000000..81652ab --- /dev/null +++ b/arch/m68k/Makefile_no @@ -0,0 +1,124 @@ +# +# arch/m68k/Makefile +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# (C) Copyright 2002, Greg Ungerer <gerg@snapgear.com> +# + +platform-$(CONFIG_M68328) := 68328 +platform-$(CONFIG_M68EZ328) := 68EZ328 +platform-$(CONFIG_M68VZ328) := 68VZ328 +platform-$(CONFIG_M68360) := 68360 +platform-$(CONFIG_M5206) := 5206 +platform-$(CONFIG_M5206e) := 5206e +platform-$(CONFIG_M520x) := 520x +platform-$(CONFIG_M523x) := 523x +platform-$(CONFIG_M5249) := 5249 +platform-$(CONFIG_M527x) := 527x +platform-$(CONFIG_M5272) := 5272 +platform-$(CONFIG_M528x) := 528x +platform-$(CONFIG_M5307) := 5307 +platform-$(CONFIG_M532x) := 532x +platform-$(CONFIG_M5407) := 5407 +platform-$(CONFIG_M54xx) := 54xx +PLATFORM := $(platform-y) + +board-$(CONFIG_PILOT) := pilot +board-$(CONFIG_UC5272) := UC5272 +board-$(CONFIG_UC5282) := UC5282 +board-$(CONFIG_UCSIMM) := ucsimm +board-$(CONFIG_UCDIMM) := ucdimm +board-$(CONFIG_UCQUICC) := uCquicc +board-$(CONFIG_DRAGEN2) := de2 +board-$(CONFIG_ARNEWSH) := ARNEWSH +board-$(CONFIG_FREESCALE) := FREESCALE +board-$(CONFIG_M5235EVB) := M5235EVB +board-$(CONFIG_M5271EVB) := M5271EVB +board-$(CONFIG_M5275EVB) := M5275EVB +board-$(CONFIG_M5282EVB) := M5282EVB +board-$(CONFIG_ELITE) := eLITE +board-$(CONFIG_NETtel) := NETtel +board-$(CONFIG_SECUREEDGEMP3) := MP3 +board-$(CONFIG_CLEOPATRA) := CLEOPATRA +board-$(CONFIG_senTec) := senTec +board-$(CONFIG_SNEHA) := SNEHA +board-$(CONFIG_M5208EVB) := M5208EVB +board-$(CONFIG_MOD5272) := MOD5272 +board-$(CONFIG_AVNET) := AVNET +board-$(CONFIG_SAVANT) := SAVANT +BOARD := $(board-y) + +model-$(CONFIG_RAMKERNEL) := ram +model-$(CONFIG_ROMKERNEL) := rom +MODEL := $(model-y) + +# +# Some code support is grouped together for a common cpu-subclass (for +# example all ColdFire cpu's are very similar). Determine the sub-class +# for the selected cpu. ONLY need to define this for the non-base member +# of the family. +# +cpuclass-$(CONFIG_M5206) := coldfire +cpuclass-$(CONFIG_M5206e) := coldfire +cpuclass-$(CONFIG_M520x) := coldfire +cpuclass-$(CONFIG_M523x) := coldfire +cpuclass-$(CONFIG_M5249) := coldfire +cpuclass-$(CONFIG_M527x) := coldfire +cpuclass-$(CONFIG_M5272) := coldfire +cpuclass-$(CONFIG_M528x) := coldfire +cpuclass-$(CONFIG_M5307) := coldfire +cpuclass-$(CONFIG_M532x) := coldfire +cpuclass-$(CONFIG_M5407) := coldfire +cpuclass-$(CONFIG_M54xx) := coldfire +cpuclass-$(CONFIG_M68328) := 68328 +cpuclass-$(CONFIG_M68EZ328) := 68328 +cpuclass-$(CONFIG_M68VZ328) := 68328 +cpuclass-$(CONFIG_M68360) := 68360 +CPUCLASS := $(cpuclass-y) + +ifneq ($(CPUCLASS),$(PLATFORM)) +CLASSDIR := arch/m68k/platform/$(cpuclass-y)/ +endif + +export PLATFORM BOARD MODEL CPUCLASS + +# +# Some CFLAG additions based on specific CPU type. +# +cflags-$(CONFIG_M5206) := $(call cc-option,-mcpu=5206,-m5200) +cflags-$(CONFIG_M5206e) := $(call cc-option,-mcpu=5206e,-m5200) +cflags-$(CONFIG_M520x) := $(call cc-option,-mcpu=5208,-m5200) +cflags-$(CONFIG_M523x) := $(call cc-option,-mcpu=523x,-m5307) +cflags-$(CONFIG_M5249) := $(call cc-option,-mcpu=5249,-m5200) +cflags-$(CONFIG_M5271) := $(call cc-option,-mcpu=5271,-m5307) +cflags-$(CONFIG_M5272) := $(call cc-option,-mcpu=5272,-m5307) +cflags-$(CONFIG_M5275) := $(call cc-option,-mcpu=5275,-m5307) +cflags-$(CONFIG_M528x) := $(call cc-option,-mcpu=528x,-m5307) +cflags-$(CONFIG_M5307) := $(call cc-option,-mcpu=5307,-m5200) +cflags-$(CONFIG_M532x) := $(call cc-option,-mcpu=532x,-m5307) +cflags-$(CONFIG_M5407) := $(call cc-option,-mcpu=5407,-m5200) +cflags-$(CONFIG_M54xx) := $(call cc-option,-mcpu=5475,-m5200) +cflags-$(CONFIG_M68328) := -m68000 +cflags-$(CONFIG_M68EZ328) := -m68000 +cflags-$(CONFIG_M68VZ328) := -m68000 +cflags-$(CONFIG_M68360) := -m68332 + +KBUILD_AFLAGS += $(cflags-y) + +KBUILD_CFLAGS += $(cflags-y) +KBUILD_CFLAGS += -D__linux__ +KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\" + +head-y := arch/m68k/platform/$(cpuclass-y)/head.o + +core-y += arch/m68k/kernel/ \ + arch/m68k/mm/ \ + $(CLASSDIR) \ + arch/m68k/platform/$(PLATFORM)/ +libs-y += arch/m68k/lib/ + +archclean: + diff --git a/arch/m68k/configs/m5208evb_defconfig b/arch/m68k/configs/m5208evb_defconfig new file mode 100644 index 0000000..c161682 --- /dev/null +++ b/arch/m68k/configs/m5208evb_defconfig @@ -0,0 +1,76 @@ +# CONFIG_MMU is not set +CONFIG_EXPERIMENTAL=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_EXPERT=y +# CONFIG_KALLSYMS is not set +# CONFIG_HOTPLUG is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_COMPAT_BRK is not set +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_M520x=y +CONFIG_CLOCK_SET=y +CONFIG_CLOCK_FREQ=166666666 +CONFIG_CLOCK_DIV=2 +CONFIG_M5208EVB=y +# CONFIG_4KSTACKS is not set +CONFIG_RAMBASE=0x40000000 +CONFIG_RAMSIZE=0x2000000 +CONFIG_VECTORBASE=0x40000000 +CONFIG_KERNELBASE=0x40020000 +CONFIG_RAM16BIT=y +CONFIG_BINFMT_FLAT=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_INET_DIAG is not set +# CONFIG_IPV6 is not set +# CONFIG_FW_LOADER is not set +CONFIG_MTD=y +CONFIG_MTD_PARTITIONS=y +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_RAM=y +CONFIG_MTD_UCLINUX=y +CONFIG_BLK_DEV_RAM=y +# CONFIG_MISC_DEVICES is not set +CONFIG_NETDEVICES=y +CONFIG_NET_ETHERNET=y +CONFIG_FEC=y +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +CONFIG_SERIAL_MCF=y +CONFIG_SERIAL_MCF_BAUDRATE=115200 +CONFIG_SERIAL_MCF_CONSOLE=y +# CONFIG_UNIX98_PTYS is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_EXT2_FS=y +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +# CONFIG_SYSFS is not set +CONFIG_ROMFS_FS=y +CONFIG_ROMFS_BACKED_BY_MTD=y +# CONFIG_NETWORK_FILESYSTEMS is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_SYSCTL_SYSCALL_CHECK=y +CONFIG_FULLDEBUG=y +CONFIG_BOOTPARAM=y +CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock0" diff --git a/arch/m68k/configs/m5249evb_defconfig b/arch/m68k/configs/m5249evb_defconfig new file mode 100644 index 0000000..a6599e4 --- /dev/null +++ b/arch/m68k/configs/m5249evb_defconfig @@ -0,0 +1,69 @@ +# CONFIG_MMU is not set +CONFIG_EXPERIMENTAL=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_EXPERT=y +# CONFIG_KALLSYMS is not set +# CONFIG_HOTPLUG is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_SLUB_DEBUG is not set +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_M5249=y +CONFIG_CLOCK_SET=y +CONFIG_CLOCK_FREQ=140000000 +CONFIG_CLOCK_DIV=2 +CONFIG_M5249C3=y +CONFIG_RAMBASE=0x00000000 +CONFIG_RAMSIZE=0x00800000 +CONFIG_VECTORBASE=0x00000000 +CONFIG_KERNELBASE=0x00020000 +CONFIG_BINFMT_FLAT=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_INET_DIAG is not set +# CONFIG_IPV6 is not set +# CONFIG_FW_LOADER is not set +CONFIG_MTD=y +CONFIG_MTD_PARTITIONS=y +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_RAM=y +CONFIG_MTD_UCLINUX=y +CONFIG_BLK_DEV_RAM=y +# CONFIG_MISC_DEVICES is not set +CONFIG_NETDEVICES=y +CONFIG_NET_ETHERNET=y +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set +CONFIG_PPP=y +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +CONFIG_SERIAL_MCF=y +CONFIG_SERIAL_MCF_CONSOLE=y +# CONFIG_UNIX98_PTYS is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_EXT2_FS=y +# CONFIG_FILE_LOCKING is not set +CONFIG_ROMFS_FS=y +CONFIG_ROMFS_BACKED_BY_MTD=y +# CONFIG_NETWORK_FILESYSTEMS is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_BOOTPARAM=y +CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock0" +# CONFIG_CRC32 is not set diff --git a/arch/m68k/configs/m5272c3_defconfig b/arch/m68k/configs/m5272c3_defconfig new file mode 100644 index 0000000..3fa60a5 --- /dev/null +++ b/arch/m68k/configs/m5272c3_defconfig @@ -0,0 +1,67 @@ +# CONFIG_MMU is not set +CONFIG_EXPERIMENTAL=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_EXPERT=y +# CONFIG_KALLSYMS is not set +# CONFIG_HOTPLUG is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_SLUB_DEBUG is not set +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_M5272=y +CONFIG_CLOCK_SET=y +CONFIG_M5272C3=y +CONFIG_RAMBASE=0x00000000 +CONFIG_RAMSIZE=0x00800000 +CONFIG_VECTORBASE=0x00000000 +CONFIG_KERNELBASE=0x00020000 +CONFIG_BINFMT_FLAT=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_INET_DIAG is not set +# CONFIG_IPV6 is not set +# CONFIG_FW_LOADER is not set +CONFIG_MTD=y +CONFIG_MTD_PARTITIONS=y +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_RAM=y +CONFIG_MTD_UCLINUX=y +CONFIG_BLK_DEV_RAM=y +# CONFIG_MISC_DEVICES is not set +CONFIG_NETDEVICES=y +CONFIG_NET_ETHERNET=y +CONFIG_FEC=y +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +CONFIG_SERIAL_MCF=y +CONFIG_SERIAL_MCF_CONSOLE=y +# CONFIG_UNIX98_PTYS is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_EXT2_FS=y +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +CONFIG_ROMFS_FS=y +CONFIG_ROMFS_BACKED_BY_MTD=y +# CONFIG_NETWORK_FILESYSTEMS is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_BOOTPARAM=y +CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock0" diff --git a/arch/m68k/configs/m5275evb_defconfig b/arch/m68k/configs/m5275evb_defconfig new file mode 100644 index 0000000..33c32ae --- /dev/null +++ b/arch/m68k/configs/m5275evb_defconfig @@ -0,0 +1,74 @@ +# CONFIG_MMU is not set +CONFIG_EXPERIMENTAL=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_EXPERT=y +# CONFIG_KALLSYMS is not set +# CONFIG_HOTPLUG is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_SLUB_DEBUG is not set +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_M5275=y +CONFIG_CLOCK_SET=y +CONFIG_CLOCK_FREQ=150000000 +CONFIG_CLOCK_DIV=2 +CONFIG_M5275EVB=y +# CONFIG_4KSTACKS is not set +CONFIG_RAMBASE=0x00000000 +CONFIG_RAMSIZE=0x00000000 +CONFIG_VECTORBASE=0x00000000 +CONFIG_KERNELBASE=0x00020000 +CONFIG_BINFMT_FLAT=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_INET_DIAG is not set +# CONFIG_IPV6 is not set +# CONFIG_FW_LOADER is not set +CONFIG_MTD=y +CONFIG_MTD_PARTITIONS=y +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_RAM=y +CONFIG_MTD_UCLINUX=y +CONFIG_BLK_DEV_RAM=y +# CONFIG_MISC_DEVICES is not set +CONFIG_NETDEVICES=y +CONFIG_NET_ETHERNET=y +CONFIG_FEC=y +CONFIG_FEC2=y +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set +CONFIG_PPP=y +# CONFIG_INPUT is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +CONFIG_SERIAL_MCF=y +CONFIG_SERIAL_MCF_CONSOLE=y +# CONFIG_UNIX98_PTYS is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_EXT2_FS=y +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +CONFIG_ROMFS_FS=y +CONFIG_ROMFS_BACKED_BY_MTD=y +# CONFIG_NETWORK_FILESYSTEMS is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_SYSCTL_SYSCALL_CHECK=y +CONFIG_BOOTPARAM=y +CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock0" +# CONFIG_CRC32 is not set diff --git a/arch/m68k/configs/m5307c3_defconfig b/arch/m68k/configs/m5307c3_defconfig new file mode 100644 index 0000000..43795f4 --- /dev/null +++ b/arch/m68k/configs/m5307c3_defconfig @@ -0,0 +1,77 @@ +# CONFIG_MMU is not set +CONFIG_EXPERIMENTAL=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_EXPERT=y +# CONFIG_KALLSYMS is not set +# CONFIG_HOTPLUG is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_SLUB_DEBUG is not set +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_M5307=y +CONFIG_CLOCK_SET=y +CONFIG_CLOCK_FREQ=90000000 +CONFIG_CLOCK_DIV=2 +CONFIG_M5307C3=y +CONFIG_RAMBASE=0x00000000 +CONFIG_RAMSIZE=0x00800000 +CONFIG_VECTORBASE=0x00000000 +CONFIG_KERNELBASE=0x00020000 +CONFIG_BINFMT_FLAT=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_INET_DIAG is not set +# CONFIG_IPV6 is not set +# CONFIG_FW_LOADER is not set +CONFIG_MTD=y +CONFIG_MTD_PARTITIONS=y +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_RAM=y +CONFIG_MTD_UCLINUX=y +CONFIG_BLK_DEV_RAM=y +# CONFIG_MISC_DEVICES is not set +CONFIG_NETDEVICES=y +CONFIG_NET_ETHERNET=y +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set +CONFIG_PPP=y +CONFIG_SLIP=y +CONFIG_SLIP_COMPRESSED=y +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO is not set +# CONFIG_VT is not set +CONFIG_SERIAL_MCF=y +CONFIG_SERIAL_MCF_CONSOLE=y +# CONFIG_LEGACY_PTYS is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_HID_SUPPORT is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_EXT2_FS=y +# CONFIG_DNOTIFY is not set +CONFIG_ROMFS_FS=y +CONFIG_ROMFS_BACKED_BY_MTD=y +# CONFIG_NETWORK_FILESYSTEMS is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_SYSCTL_SYSCALL_CHECK=y +CONFIG_FULLDEBUG=y +CONFIG_BOOTPARAM=y +CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock0" +# CONFIG_CRC32 is not set diff --git a/arch/m68k/configs/m5407c3_defconfig b/arch/m68k/configs/m5407c3_defconfig new file mode 100644 index 0000000..72746c5 --- /dev/null +++ b/arch/m68k/configs/m5407c3_defconfig @@ -0,0 +1,71 @@ +# CONFIG_MMU is not set +CONFIG_EXPERIMENTAL=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_EXPERT=y +# CONFIG_KALLSYMS is not set +# CONFIG_HOTPLUG is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_AIO is not set +# CONFIG_VM_EVENT_COUNTERS is not set +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_M5407=y +CONFIG_CLOCK_SET=y +CONFIG_CLOCK_FREQ=50000000 +CONFIG_M5407C3=y +CONFIG_RAMBASE=0x00000000 +CONFIG_RAMSIZE=0x00000000 +CONFIG_VECTORBASE=0x00000000 +CONFIG_KERNELBASE=0x00020000 +CONFIG_BINFMT_FLAT=y +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_INET_DIAG is not set +# CONFIG_IPV6 is not set +# CONFIG_FW_LOADER is not set +CONFIG_MTD=y +CONFIG_MTD_PARTITIONS=y +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_RAM=y +CONFIG_MTD_UCLINUX=y +CONFIG_BLK_DEV_RAM=y +# CONFIG_MISC_DEVICES is not set +CONFIG_NETDEVICES=y +CONFIG_NET_ETHERNET=y +# CONFIG_NETDEV_1000 is not set +# CONFIG_NETDEV_10000 is not set +CONFIG_PPP=y +# CONFIG_INPUT is not set +# CONFIG_VT is not set +CONFIG_SERIAL_MCF=y +CONFIG_SERIAL_MCF_CONSOLE=y +# CONFIG_UNIX98_PTYS is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +CONFIG_EXT2_FS=y +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +CONFIG_ROMFS_FS=y +CONFIG_ROMFS_BACKED_BY_MTD=y +# CONFIG_NETWORK_FILESYSTEMS is not set +# CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_SYSCTL_SYSCALL_CHECK=y +CONFIG_BOOTPARAM=y +CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock0" +# CONFIG_CRC32 is not set diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile index 55d5d6b..c482ebc 100644 --- a/arch/m68k/kernel/Makefile +++ b/arch/m68k/kernel/Makefile @@ -1,17 +1,5 @@ -# -# Makefile for the linux kernel. -# - -ifndef CONFIG_SUN3 - extra-y := head.o +ifdef CONFIG_MMU +include arch/m68k/kernel/Makefile_mm else - extra-y := sun3-head.o +include arch/m68k/kernel/Makefile_no endif -extra-y += vmlinux.lds - -obj-y := entry.o process.o traps.o ints.o signal.o ptrace.o module.o \ - sys_m68k.o time.o setup.o m68k_ksyms.o devres.o - -devres-y = ../../../kernel/irq/devres.o - -obj-y$(CONFIG_MMU_SUN3) += dma.o # no, it's not a typo diff --git a/arch/m68k/kernel/Makefile_mm b/arch/m68k/kernel/Makefile_mm new file mode 100644 index 0000000..55d5d6b --- /dev/null +++ b/arch/m68k/kernel/Makefile_mm @@ -0,0 +1,17 @@ +# +# Makefile for the linux kernel. +# + +ifndef CONFIG_SUN3 + extra-y := head.o +else + extra-y := sun3-head.o +endif +extra-y += vmlinux.lds + +obj-y := entry.o process.o traps.o ints.o signal.o ptrace.o module.o \ + sys_m68k.o time.o setup.o m68k_ksyms.o devres.o + +devres-y = ../../../kernel/irq/devres.o + +obj-y$(CONFIG_MMU_SUN3) += dma.o # no, it's not a typo diff --git a/arch/m68k/kernel/Makefile_no b/arch/m68k/kernel/Makefile_no new file mode 100644 index 0000000..37c3fc0 --- /dev/null +++ b/arch/m68k/kernel/Makefile_no @@ -0,0 +1,10 @@ +# +# Makefile for arch/m68knommu/kernel. +# + +extra-y := vmlinux.lds + +obj-y += dma.o entry.o init_task.o irq.o m68k_ksyms.o process.o ptrace.o \ + setup.o signal.o syscalltable.o sys_m68k.o time.o traps.o + +obj-$(CONFIG_MODULES) += module.o diff --git a/arch/m68k/kernel/asm-offsets.c b/arch/m68k/kernel/asm-offsets.c index 78e59b8..59a69a5 100644 --- a/arch/m68k/kernel/asm-offsets.c +++ b/arch/m68k/kernel/asm-offsets.c @@ -1,100 +1,5 @@ -/* - * This program is used to generate definitions needed by - * assembly language modules. - * - * We use the technique used in the OSF Mach kernel code: - * generate asm statements containing #defines, - * compile this file to assembler, and then extract the - * #defines from the assembly-language output. - */ - -#define ASM_OFFSETS_C - -#include <linux/stddef.h> -#include <linux/sched.h> -#include <linux/kernel_stat.h> -#include <linux/kbuild.h> -#include <asm/bootinfo.h> -#include <asm/irq.h> -#include <asm/amigahw.h> -#include <linux/font.h> - -int main(void) -{ - /* offsets into the task struct */ - DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); - DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info)); - DEFINE(TASK_MM, offsetof(struct task_struct, mm)); #ifdef CONFIG_MMU - DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info)); +#include "asm-offsets_mm.c" +#else +#include "asm-offsets_no.c" #endif - - /* offsets into the thread struct */ - DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); - DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); - DEFINE(THREAD_SR, offsetof(struct thread_struct, sr)); - DEFINE(THREAD_FS, offsetof(struct thread_struct, fs)); - DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp)); - DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0)); - DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp)); - DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl)); - DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); - - /* offsets into the thread_info struct */ - DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count)); - DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags)); - - /* offsets into the pt_regs */ - DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0)); - DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0)); - DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1)); - DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2)); - DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3)); - DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4)); - DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5)); - DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0)); - DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1)); - DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2)); - DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc)); - DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr)); - /* bitfields are a bit difficult */ - DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4); - - /* offsets into the irq_cpustat_t struct */ - DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); - - /* offsets into the bi_record struct */ - DEFINE(BIR_TAG, offsetof(struct bi_record, tag)); - DEFINE(BIR_SIZE, offsetof(struct bi_record, size)); - DEFINE(BIR_DATA, offsetof(struct bi_record, data)); - - /* offsets into font_desc (drivers/video/console/font.h) */ - DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx)); - DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name)); - DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width)); - DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height)); - DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data)); - DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref)); - - /* signal defines */ - DEFINE(LSIGSEGV, SIGSEGV); - DEFINE(LSEGV_MAPERR, SEGV_MAPERR); - DEFINE(LSIGTRAP, SIGTRAP); - DEFINE(LTRAP_TRACE, TRAP_TRACE); - - /* offsets into the custom struct */ - DEFINE(CUSTOMBASE, &amiga_custom); - DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar)); - DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr)); - DEFINE(C_INTENA, offsetof(struct CUSTOM, intena)); - DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq)); - DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr)); - DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat)); - DEFINE(C_SERPER, offsetof(struct CUSTOM, serper)); - DEFINE(CIAABASE, &ciaa); - DEFINE(CIABBASE, &ciab); - DEFINE(C_PRA, offsetof(struct CIA, pra)); - DEFINE(ZTWOBASE, zTwoBase); - - return 0; -} diff --git a/arch/m68k/kernel/asm-offsets_mm.c b/arch/m68k/kernel/asm-offsets_mm.c new file mode 100644 index 0000000..78e59b8 --- /dev/null +++ b/arch/m68k/kernel/asm-offsets_mm.c @@ -0,0 +1,100 @@ +/* + * This program is used to generate definitions needed by + * assembly language modules. + * + * We use the technique used in the OSF Mach kernel code: + * generate asm statements containing #defines, + * compile this file to assembler, and then extract the + * #defines from the assembly-language output. + */ + +#define ASM_OFFSETS_C + +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/kernel_stat.h> +#include <linux/kbuild.h> +#include <asm/bootinfo.h> +#include <asm/irq.h> +#include <asm/amigahw.h> +#include <linux/font.h> + +int main(void) +{ + /* offsets into the task struct */ + DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); + DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info)); + DEFINE(TASK_MM, offsetof(struct task_struct, mm)); +#ifdef CONFIG_MMU + DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info)); +#endif + + /* offsets into the thread struct */ + DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); + DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); + DEFINE(THREAD_SR, offsetof(struct thread_struct, sr)); + DEFINE(THREAD_FS, offsetof(struct thread_struct, fs)); + DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp)); + DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0)); + DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp)); + DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl)); + DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); + + /* offsets into the thread_info struct */ + DEFINE(TINFO_PREEMPT, offsetof(struct thread_info, preempt_count)); + DEFINE(TINFO_FLAGS, offsetof(struct thread_info, flags)); + + /* offsets into the pt_regs */ + DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0)); + DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0)); + DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1)); + DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2)); + DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3)); + DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4)); + DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5)); + DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0)); + DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1)); + DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2)); + DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc)); + DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr)); + /* bitfields are a bit difficult */ + DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4); + + /* offsets into the irq_cpustat_t struct */ + DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); + + /* offsets into the bi_record struct */ + DEFINE(BIR_TAG, offsetof(struct bi_record, tag)); + DEFINE(BIR_SIZE, offsetof(struct bi_record, size)); + DEFINE(BIR_DATA, offsetof(struct bi_record, data)); + + /* offsets into font_desc (drivers/video/console/font.h) */ + DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx)); + DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name)); + DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width)); + DEFINE(FONT_DESC_HEIGHT, offsetof(struct font_desc, height)); + DEFINE(FONT_DESC_DATA, offsetof(struct font_desc, data)); + DEFINE(FONT_DESC_PREF, offsetof(struct font_desc, pref)); + + /* signal defines */ + DEFINE(LSIGSEGV, SIGSEGV); + DEFINE(LSEGV_MAPERR, SEGV_MAPERR); + DEFINE(LSIGTRAP, SIGTRAP); + DEFINE(LTRAP_TRACE, TRAP_TRACE); + + /* offsets into the custom struct */ + DEFINE(CUSTOMBASE, &amiga_custom); + DEFINE(C_INTENAR, offsetof(struct CUSTOM, intenar)); + DEFINE(C_INTREQR, offsetof(struct CUSTOM, intreqr)); + DEFINE(C_INTENA, offsetof(struct CUSTOM, intena)); + DEFINE(C_INTREQ, offsetof(struct CUSTOM, intreq)); + DEFINE(C_SERDATR, offsetof(struct CUSTOM, serdatr)); + DEFINE(C_SERDAT, offsetof(struct CUSTOM, serdat)); + DEFINE(C_SERPER, offsetof(struct CUSTOM, serper)); + DEFINE(CIAABASE, &ciaa); + DEFINE(CIABBASE, &ciab); + DEFINE(C_PRA, offsetof(struct CIA, pra)); + DEFINE(ZTWOBASE, zTwoBase); + + return 0; +} diff --git a/arch/m68k/kernel/asm-offsets_no.c b/arch/m68k/kernel/asm-offsets_no.c new file mode 100644 index 0000000..ffe02f4 --- /dev/null +++ b/arch/m68k/kernel/asm-offsets_no.c @@ -0,0 +1,76 @@ +/* + * This program is used to generate definitions needed by + * assembly language modules. + * + * We use the technique used in the OSF Mach kernel code: + * generate asm statements containing #defines, + * compile this file to assembler, and then extract the + * #defines from the assembly-language output. + */ + +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/kernel_stat.h> +#include <linux/ptrace.h> +#include <linux/hardirq.h> +#include <linux/kbuild.h> +#include <asm/bootinfo.h> +#include <asm/irq.h> +#include <asm/thread_info.h> + +int main(void) +{ + /* offsets into the task struct */ + DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); + DEFINE(TASK_MM, offsetof(struct task_struct, mm)); + + /* offsets into the irq_cpustat_t struct */ + DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); + + /* offsets into the thread struct */ + DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); + DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); + DEFINE(THREAD_SR, offsetof(struct thread_struct, sr)); + DEFINE(THREAD_FS, offsetof(struct thread_struct, fs)); + DEFINE(THREAD_CRP, offsetof(struct thread_struct, crp)); + DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0)); + DEFINE(THREAD_FPREG, offsetof(struct thread_struct, fp)); + DEFINE(THREAD_FPCNTL, offsetof(struct thread_struct, fpcntl)); + DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); + + /* offsets into the pt_regs */ + DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0)); + DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0)); + DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1)); + DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2)); + DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3)); + DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4)); + DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5)); + DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0)); + DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1)); + DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2)); + DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc)); + DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr)); + +#ifdef CONFIG_COLDFIRE + /* bitfields are a bit difficult */ + DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2); +#else + /* bitfields are a bit difficult */ + DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, pc) + 4); +#endif + + /* signal defines */ + DEFINE(SIGSEGV, SIGSEGV); + DEFINE(SEGV_MAPERR, SEGV_MAPERR); + DEFINE(SIGTRAP, SIGTRAP); + DEFINE(TRAP_TRACE, TRAP_TRACE); + + DEFINE(PT_PTRACED, PT_PTRACED); + + /* Offsets in thread_info structure */ + DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); + DEFINE(TI_PREEMPTCOUNT, offsetof(struct thread_info, preempt_count)); + + return 0; +} diff --git a/arch/m68k/kernel/dma.c b/arch/m68k/kernel/dma.c index 4bbb3c2..90e8cb72 100644 --- a/arch/m68k/kernel/dma.c +++ b/arch/m68k/kernel/dma.c @@ -1,130 +1,5 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#undef DEBUG - -#include <linux/dma-mapping.h> -#include <linux/device.h> -#include <linux/kernel.h> -#include <linux/scatterlist.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> - -#include <asm/pgalloc.h> - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t flag) -{ - struct page *page, **map; - pgprot_t pgprot; - void *addr; - int i, order; - - pr_debug("dma_alloc_coherent: %d,%x\n", size, flag); - - size = PAGE_ALIGN(size); - order = get_order(size); - - page = alloc_pages(flag, order); - if (!page) - return NULL; - - *handle = page_to_phys(page); - map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA); - if (!map) { - __free_pages(page, order); - return NULL; - } - split_page(page, order); - - order = 1 << order; - size >>= PAGE_SHIFT; - map[0] = page; - for (i = 1; i < size; i++) - map[i] = page + i; - for (; i < order; i++) - __free_page(page + i); - pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); - if (CPU_IS_040_OR_060) - pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S; - else - pgprot_val(pgprot) |= _PAGE_NOCACHE030; - addr = vmap(map, size, VM_MAP, pgprot); - kfree(map); - - return addr; -} -EXPORT_SYMBOL(dma_alloc_coherent); - -void dma_free_coherent(struct device *dev, size_t size, - void *addr, dma_addr_t handle) -{ - pr_debug("dma_free_coherent: %p, %x\n", addr, handle); - vfree(addr); -} -EXPORT_SYMBOL(dma_free_coherent); - -void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) -{ - switch (dir) { - case DMA_TO_DEVICE: - cache_push(handle, size); - break; - case DMA_FROM_DEVICE: - cache_clear(handle, size); - break; - default: - if (printk_ratelimit()) - printk("dma_sync_single_for_device: unsupported dir %u\n", dir); - break; - } -} -EXPORT_SYMBOL(dma_sync_single_for_device); - -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir) -{ - int i; - - for (i = 0; i < nents; sg++, i++) - dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); -} -EXPORT_SYMBOL(dma_sync_sg_for_device); - -dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, - enum dma_data_direction dir) -{ - dma_addr_t handle = virt_to_bus(addr); - - dma_sync_single_for_device(dev, handle, size, dir); - return handle; -} -EXPORT_SYMBOL(dma_map_single); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - dma_addr_t handle = page_to_phys(page) + offset; - - dma_sync_single_for_device(dev, handle, size, dir); - return handle; -} -EXPORT_SYMBOL(dma_map_page); - -int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir) -{ - int i; - - for (i = 0; i < nents; sg++, i++) { - sg->dma_address = sg_phys(sg); - dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); - } - return nents; -} -EXPORT_SYMBOL(dma_map_sg); +#ifdef CONFIG_MMU +#include "dma_mm.c" +#else +#include "dma_no.c" +#endif diff --git a/arch/m68k/kernel/dma_mm.c b/arch/m68k/kernel/dma_mm.c new file mode 100644 index 0000000..4bbb3c2 --- /dev/null +++ b/arch/m68k/kernel/dma_mm.c @@ -0,0 +1,130 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#undef DEBUG + +#include <linux/dma-mapping.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/scatterlist.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> + +#include <asm/pgalloc.h> + +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *handle, gfp_t flag) +{ + struct page *page, **map; + pgprot_t pgprot; + void *addr; + int i, order; + + pr_debug("dma_alloc_coherent: %d,%x\n", size, flag); + + size = PAGE_ALIGN(size); + order = get_order(size); + + page = alloc_pages(flag, order); + if (!page) + return NULL; + + *handle = page_to_phys(page); + map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA); + if (!map) { + __free_pages(page, order); + return NULL; + } + split_page(page, order); + + order = 1 << order; + size >>= PAGE_SHIFT; + map[0] = page; + for (i = 1; i < size; i++) + map[i] = page + i; + for (; i < order; i++) + __free_page(page + i); + pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); + if (CPU_IS_040_OR_060) + pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S; + else + pgprot_val(pgprot) |= _PAGE_NOCACHE030; + addr = vmap(map, size, VM_MAP, pgprot); + kfree(map); + + return addr; +} +EXPORT_SYMBOL(dma_alloc_coherent); + +void dma_free_coherent(struct device *dev, size_t size, + void *addr, dma_addr_t handle) +{ + pr_debug("dma_free_coherent: %p, %x\n", addr, handle); + vfree(addr); +} +EXPORT_SYMBOL(dma_free_coherent); + +void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) +{ + switch (dir) { + case DMA_TO_DEVICE: + cache_push(handle, size); + break; + case DMA_FROM_DEVICE: + cache_clear(handle, size); + break; + default: + if (printk_ratelimit()) + printk("dma_sync_single_for_device: unsupported dir %u\n", dir); + break; + } +} +EXPORT_SYMBOL(dma_sync_single_for_device); + +void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction dir) +{ + int i; + + for (i = 0; i < nents; sg++, i++) + dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); +} +EXPORT_SYMBOL(dma_sync_sg_for_device); + +dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = virt_to_bus(addr); + + dma_sync_single_for_device(dev, handle, size, dir); + return handle; +} +EXPORT_SYMBOL(dma_map_single); + +dma_addr_t dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = page_to_phys(page) + offset; + + dma_sync_single_for_device(dev, handle, size, dir); + return handle; +} +EXPORT_SYMBOL(dma_map_page); + +int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction dir) +{ + int i; + + for (i = 0; i < nents; sg++, i++) { + sg->dma_address = sg_phys(sg); + dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); + } + return nents; +} +EXPORT_SYMBOL(dma_map_sg); diff --git a/arch/m68k/kernel/dma_no.c b/arch/m68k/kernel/dma_no.c new file mode 100644 index 0000000..fc61541 --- /dev/null +++ b/arch/m68k/kernel/dma_no.c @@ -0,0 +1,74 @@ +/* + * Dynamic DMA mapping support. + * + * We never have any address translations to worry about, so this + * is just alloc/free. + */ + +#include <linux/types.h> +#include <linux/gfp.h> +#include <linux/mm.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <asm/cacheflush.h> + +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp) +{ + void *ret; + /* ignore region specifiers */ + gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); + + if (dev == NULL || (*dev->dma_mask < 0xffffffff)) + gfp |= GFP_DMA; + ret = (void *)__get_free_pages(gfp, get_order(size)); + + if (ret != NULL) { + memset(ret, 0, size); + *dma_handle = virt_to_phys(ret); + } + return ret; +} + +void dma_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle) +{ + free_pages((unsigned long)vaddr, get_order(size)); +} + +void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) +{ + switch (dir) { + case DMA_TO_DEVICE: + flush_dcache_range(handle, size); + break; + case DMA_FROM_DEVICE: + /* Should be clear already */ + break; + default: + if (printk_ratelimit()) + printk("dma_sync_single_for_device: unsupported dir %u\n", dir); + break; + } +} + +EXPORT_SYMBOL(dma_sync_single_for_device); +dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = virt_to_phys(addr); + flush_dcache_range(handle, size); + return handle; +} +EXPORT_SYMBOL(dma_map_single); + +dma_addr_t dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = page_to_phys(page) + offset; + dma_sync_single_for_device(dev, handle, size, dir); + return handle; +} +EXPORT_SYMBOL(dma_map_page); diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index 1559dea..081cf96 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -1,753 +1,5 @@ -/* -*- mode: asm -*- - * - * linux/arch/m68k/kernel/entry.S - * - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file README.legal in the main directory of this archive - * for more details. - * - * Linux/m68k support by Hamish Macdonald - * - * 68060 fixes by Jesper Skov - * - */ - -/* - * entry.S contains the system-call and fault low-level handling routines. - * This also contains the timer-interrupt handler, as well as all interrupts - * and faults that can result in a task-switch. - * - * NOTE: This code handles signal-recognition, which happens every time - * after a timer-interrupt and after each system call. - * - */ - -/* - * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so - * all pointers that used to be 'current' are now entry - * number 0 in the 'current_set' list. - * - * 6/05/00 RZ: addedd writeback completion after return from sighandler - * for 68040 - */ - -#include <linux/linkage.h> -#include <asm/entry.h> -#include <asm/errno.h> -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/traps.h> -#include <asm/unistd.h> - -#include <asm/asm-offsets.h> - -.globl system_call, buserr, trap, resume -.globl sys_call_table -.globl sys_fork, sys_clone, sys_vfork -.globl ret_from_interrupt, bad_interrupt -.globl auto_irqhandler_fixup -.globl user_irqvec_fixup, user_irqhandler_fixup - -.text -ENTRY(buserr) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %sp,%sp@- | stack frame pointer argument - bsrl buserr_c - addql #4,%sp - jra .Lret_from_exception - -ENTRY(trap) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %sp,%sp@- | stack frame pointer argument - bsrl trap_c - addql #4,%sp - jra .Lret_from_exception - - | After a fork we jump here directly from resume, - | so that %d1 contains the previous task - | schedule_tail now used regardless of CONFIG_SMP -ENTRY(ret_from_fork) - movel %d1,%sp@- - jsr schedule_tail - addql #4,%sp - jra .Lret_from_exception - -do_trace_entry: - movel #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace - subql #4,%sp - SAVE_SWITCH_STACK - jbsr syscall_trace - RESTORE_SWITCH_STACK - addql #4,%sp - movel %sp@(PT_OFF_ORIG_D0),%d0 - cmpl #NR_syscalls,%d0 - jcs syscall -badsys: - movel #-ENOSYS,%sp@(PT_OFF_D0) - jra ret_from_syscall - -do_trace_exit: - subql #4,%sp - SAVE_SWITCH_STACK - jbsr syscall_trace - RESTORE_SWITCH_STACK - addql #4,%sp - jra .Lret_from_exception - -ENTRY(ret_from_signal) - tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) - jge 1f - jbsr syscall_trace -1: RESTORE_SWITCH_STACK - addql #4,%sp -/* on 68040 complete pending writebacks if any */ -#ifdef CONFIG_M68040 - bfextu %sp@(PT_OFF_FORMATVEC){#0,#4},%d0 - subql #7,%d0 | bus error frame ? - jbne 1f - movel %sp,%sp@- - jbsr berr_040cleanup - addql #4,%sp -1: +#ifdef CONFIG_MMU +#include "entry_mm.S" +#else +#include "entry_no.S" #endif - jra .Lret_from_exception - -ENTRY(system_call) - SAVE_ALL_SYS - - GET_CURRENT(%d1) - | save top of frame - movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) - - | syscall trace? - tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) - jmi do_trace_entry - cmpl #NR_syscalls,%d0 - jcc badsys -syscall: - jbsr @(sys_call_table,%d0:l:4)@(0) - movel %d0,%sp@(PT_OFF_D0) | save the return value -ret_from_syscall: - |oriw #0x0700,%sr - movew %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0 - jne syscall_exit_work -1: RESTORE_ALL - -syscall_exit_work: - btst #5,%sp@(PT_OFF_SR) | check if returning to kernel - bnes 1b | if so, skip resched, signals - lslw #1,%d0 - jcs do_trace_exit - jmi do_delayed_trace - lslw #8,%d0 - jmi do_signal_return - pea resume_userspace - jra schedule - - -ENTRY(ret_from_exception) -.Lret_from_exception: - btst #5,%sp@(PT_OFF_SR) | check if returning to kernel - bnes 1f | if so, skip resched, signals - | only allow interrupts when we are really the last one on the - | kernel stack, otherwise stack overflow can occur during - | heavy interrupt load - andw #ALLOWINT,%sr - -resume_userspace: - moveb %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0 - jne exit_work -1: RESTORE_ALL - -exit_work: - | save top of frame - movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) - lslb #1,%d0 - jmi do_signal_return - pea resume_userspace - jra schedule - - -do_signal_return: - |andw #ALLOWINT,%sr - subql #4,%sp | dummy return address - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - bsrl do_signal - addql #4,%sp - RESTORE_SWITCH_STACK - addql #4,%sp - jbra resume_userspace - -do_delayed_trace: - bclr #7,%sp@(PT_OFF_SR) | clear trace bit in SR - pea 1 | send SIGTRAP - movel %curptr,%sp@- - pea LSIGTRAP - jbsr send_sig - addql #8,%sp - addql #4,%sp - jbra resume_userspace - - -/* This is the main interrupt handler for autovector interrupts */ - -ENTRY(auto_inthandler) - SAVE_ALL_INT - GET_CURRENT(%d0) - addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) - | put exception # in d0 - bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 - subw #VEC_SPUR,%d0 - - movel %sp,%sp@- - movel %d0,%sp@- | put vector # on stack -auto_irqhandler_fixup = . + 2 - jsr __m68k_handle_int | process the IRQ - addql #8,%sp | pop parameters off stack - -ret_from_interrupt: - subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) - jeq ret_from_last_interrupt -2: RESTORE_ALL - - ALIGN -ret_from_last_interrupt: - moveq #(~ALLOWINT>>8)&0xff,%d0 - andb %sp@(PT_OFF_SR),%d0 - jne 2b - - /* check if we need to do software interrupts */ - tstl irq_stat+CPUSTAT_SOFTIRQ_PENDING - jeq .Lret_from_exception - pea ret_from_exception - jra do_softirq - -/* Handler for user defined interrupt vectors */ - -ENTRY(user_inthandler) - SAVE_ALL_INT - GET_CURRENT(%d0) - addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) - | put exception # in d0 - bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 -user_irqvec_fixup = . + 2 - subw #VEC_USER,%d0 - - movel %sp,%sp@- - movel %d0,%sp@- | put vector # on stack -user_irqhandler_fixup = . + 2 - jsr __m68k_handle_int | process the IRQ - addql #8,%sp | pop parameters off stack - - subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) - jeq ret_from_last_interrupt - RESTORE_ALL - -/* Handler for uninitialized and spurious interrupts */ - -ENTRY(bad_inthandler) - SAVE_ALL_INT - GET_CURRENT(%d0) - addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) - - movel %sp,%sp@- - jsr handle_badint - addql #4,%sp - - subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) - jeq ret_from_last_interrupt - RESTORE_ALL - - -ENTRY(sys_fork) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_fork - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_clone) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_clone - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_vfork) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_vfork - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_sigreturn) - SAVE_SWITCH_STACK - jbsr do_sigreturn - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_rt_sigreturn) - SAVE_SWITCH_STACK - jbsr do_rt_sigreturn - RESTORE_SWITCH_STACK - rts - -resume: - /* - * Beware - when entering resume, prev (the current task) is - * in a0, next (the new task) is in a1,so don't change these - * registers until their contents are no longer needed. - */ - - /* save sr */ - movew %sr,%a0@(TASK_THREAD+THREAD_SR) - - /* save fs (sfc,%dfc) (may be pointing to kernel memory) */ - movec %sfc,%d0 - movew %d0,%a0@(TASK_THREAD+THREAD_FS) - - /* save usp */ - /* it is better to use a movel here instead of a movew 8*) */ - movec %usp,%d0 - movel %d0,%a0@(TASK_THREAD+THREAD_USP) - - /* save non-scratch registers on stack */ - SAVE_SWITCH_STACK - - /* save current kernel stack pointer */ - movel %sp,%a0@(TASK_THREAD+THREAD_KSP) - - /* save floating point context */ -#ifndef CONFIG_M68KFPU_EMU_ONLY -#ifdef CONFIG_M68KFPU_EMU - tstl m68k_fputype - jeq 3f -#endif - fsave %a0@(TASK_THREAD+THREAD_FPSTATE) - -#if defined(CONFIG_M68060) -#if !defined(CPU_M68060_ONLY) - btst #3,m68k_cputype+3 - beqs 1f -#endif - /* The 060 FPU keeps status in bits 15-8 of the first longword */ - tstb %a0@(TASK_THREAD+THREAD_FPSTATE+2) - jeq 3f -#if !defined(CPU_M68060_ONLY) - jra 2f -#endif -#endif /* CONFIG_M68060 */ -#if !defined(CPU_M68060_ONLY) -1: tstb %a0@(TASK_THREAD+THREAD_FPSTATE) - jeq 3f -#endif -2: fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG) - fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL) -3: -#endif /* CONFIG_M68KFPU_EMU_ONLY */ - /* Return previous task in %d1 */ - movel %curptr,%d1 - - /* switch to new task (a1 contains new task) */ - movel %a1,%curptr - - /* restore floating point context */ -#ifndef CONFIG_M68KFPU_EMU_ONLY -#ifdef CONFIG_M68KFPU_EMU - tstl m68k_fputype - jeq 4f -#endif -#if defined(CONFIG_M68060) -#if !defined(CPU_M68060_ONLY) - btst #3,m68k_cputype+3 - beqs 1f -#endif - /* The 060 FPU keeps status in bits 15-8 of the first longword */ - tstb %a1@(TASK_THREAD+THREAD_FPSTATE+2) - jeq 3f -#if !defined(CPU_M68060_ONLY) - jra 2f -#endif -#endif /* CONFIG_M68060 */ -#if !defined(CPU_M68060_ONLY) -1: tstb %a1@(TASK_THREAD+THREAD_FPSTATE) - jeq 3f -#endif -2: fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7 - fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar -3: frestore %a1@(TASK_THREAD+THREAD_FPSTATE) -4: -#endif /* CONFIG_M68KFPU_EMU_ONLY */ - - /* restore the kernel stack pointer */ - movel %a1@(TASK_THREAD+THREAD_KSP),%sp - - /* restore non-scratch registers */ - RESTORE_SWITCH_STACK - - /* restore user stack pointer */ - movel %a1@(TASK_THREAD+THREAD_USP),%a0 - movel %a0,%usp - - /* restore fs (sfc,%dfc) */ - movew %a1@(TASK_THREAD+THREAD_FS),%a0 - movec %a0,%sfc - movec %a0,%dfc - - /* restore status register */ - movew %a1@(TASK_THREAD+THREAD_SR),%sr - - rts - -.data -ALIGN -sys_call_table: - .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ - .long sys_exit - .long sys_fork - .long sys_read - .long sys_write - .long sys_open /* 5 */ - .long sys_close - .long sys_waitpid - .long sys_creat - .long sys_link - .long sys_unlink /* 10 */ - .long sys_execve - .long sys_chdir - .long sys_time - .long sys_mknod - .long sys_chmod /* 15 */ - .long sys_chown16 - .long sys_ni_syscall /* old break syscall holder */ - .long sys_stat - .long sys_lseek - .long sys_getpid /* 20 */ - .long sys_mount - .long sys_oldumount - .long sys_setuid16 - .long sys_getuid16 - .long sys_stime /* 25 */ - .long sys_ptrace - .long sys_alarm - .long sys_fstat - .long sys_pause - .long sys_utime /* 30 */ - .long sys_ni_syscall /* old stty syscall holder */ - .long sys_ni_syscall /* old gtty syscall holder */ - .long sys_access - .long sys_nice - .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */ - .long sys_sync - .long sys_kill - .long sys_rename - .long sys_mkdir - .long sys_rmdir /* 40 */ - .long sys_dup - .long sys_pipe - .long sys_times - .long sys_ni_syscall /* old prof syscall holder */ - .long sys_brk /* 45 */ - .long sys_setgid16 - .long sys_getgid16 - .long sys_signal - .long sys_geteuid16 - .long sys_getegid16 /* 50 */ - .long sys_acct - .long sys_umount /* recycled never used phys() */ - .long sys_ni_syscall /* old lock syscall holder */ - .long sys_ioctl - .long sys_fcntl /* 55 */ - .long sys_ni_syscall /* old mpx syscall holder */ - .long sys_setpgid - .long sys_ni_syscall /* old ulimit syscall holder */ - .long sys_ni_syscall - .long sys_umask /* 60 */ - .long sys_chroot - .long sys_ustat - .long sys_dup2 - .long sys_getppid - .long sys_getpgrp /* 65 */ - .long sys_setsid - .long sys_sigaction - .long sys_sgetmask - .long sys_ssetmask - .long sys_setreuid16 /* 70 */ - .long sys_setregid16 - .long sys_sigsuspend - .long sys_sigpending - .long sys_sethostname - .long sys_setrlimit /* 75 */ - .long sys_old_getrlimit - .long sys_getrusage - .long sys_gettimeofday - .long sys_settimeofday - .long sys_getgroups16 /* 80 */ - .long sys_setgroups16 - .long sys_old_select - .long sys_symlink - .long sys_lstat - .long sys_readlink /* 85 */ - .long sys_uselib - .long sys_swapon - .long sys_reboot - .long sys_old_readdir - .long sys_old_mmap /* 90 */ - .long sys_munmap - .long sys_truncate - .long sys_ftruncate - .long sys_fchmod - .long sys_fchown16 /* 95 */ - .long sys_getpriority - .long sys_setpriority - .long sys_ni_syscall /* old profil syscall holder */ - .long sys_statfs - .long sys_fstatfs /* 100 */ - .long sys_ni_syscall /* ioperm for i386 */ - .long sys_socketcall - .long sys_syslog - .long sys_setitimer - .long sys_getitimer /* 105 */ - .long sys_newstat - .long sys_newlstat - .long sys_newfstat - .long sys_ni_syscall - .long sys_ni_syscall /* 110 */ /* iopl for i386 */ - .long sys_vhangup - .long sys_ni_syscall /* obsolete idle() syscall */ - .long sys_ni_syscall /* vm86old for i386 */ - .long sys_wait4 - .long sys_swapoff /* 115 */ - .long sys_sysinfo - .long sys_ipc - .long sys_fsync - .long sys_sigreturn - .long sys_clone /* 120 */ - .long sys_setdomainname - .long sys_newuname - .long sys_cacheflush /* modify_ldt for i386 */ - .long sys_adjtimex - .long sys_mprotect /* 125 */ - .long sys_sigprocmask - .long sys_ni_syscall /* old "create_module" */ - .long sys_init_module - .long sys_delete_module - .long sys_ni_syscall /* 130 - old "get_kernel_syms" */ - .long sys_quotactl - .long sys_getpgid - .long sys_fchdir - .long sys_bdflush - .long sys_sysfs /* 135 */ - .long sys_personality - .long sys_ni_syscall /* for afs_syscall */ - .long sys_setfsuid16 - .long sys_setfsgid16 - .long sys_llseek /* 140 */ - .long sys_getdents - .long sys_select - .long sys_flock - .long sys_msync - .long sys_readv /* 145 */ - .long sys_writev - .long sys_getsid - .long sys_fdatasync - .long sys_sysctl - .long sys_mlock /* 150 */ - .long sys_munlock - .long sys_mlockall - .long sys_munlockall - .long sys_sched_setparam - .long sys_sched_getparam /* 155 */ - .long sys_sched_setscheduler - .long sys_sched_getscheduler - .long sys_sched_yield - .long sys_sched_get_priority_max - .long sys_sched_get_priority_min /* 160 */ - .long sys_sched_rr_get_interval - .long sys_nanosleep - .long sys_mremap - .long sys_setresuid16 - .long sys_getresuid16 /* 165 */ - .long sys_getpagesize - .long sys_ni_syscall /* old sys_query_module */ - .long sys_poll - .long sys_nfsservctl - .long sys_setresgid16 /* 170 */ - .long sys_getresgid16 - .long sys_prctl - .long sys_rt_sigreturn - .long sys_rt_sigaction - .long sys_rt_sigprocmask /* 175 */ - .long sys_rt_sigpending - .long sys_rt_sigtimedwait - .long sys_rt_sigqueueinfo - .long sys_rt_sigsuspend - .long sys_pread64 /* 180 */ - .long sys_pwrite64 - .long sys_lchown16; - .long sys_getcwd - .long sys_capget - .long sys_capset /* 185 */ - .long sys_sigaltstack - .long sys_sendfile - .long sys_ni_syscall /* streams1 */ - .long sys_ni_syscall /* streams2 */ - .long sys_vfork /* 190 */ - .long sys_getrlimit - .long sys_mmap2 - .long sys_truncate64 - .long sys_ftruncate64 - .long sys_stat64 /* 195 */ - .long sys_lstat64 - .long sys_fstat64 - .long sys_chown - .long sys_getuid - .long sys_getgid /* 200 */ - .long sys_geteuid - .long sys_getegid - .long sys_setreuid - .long sys_setregid - .long sys_getgroups /* 205 */ - .long sys_setgroups - .long sys_fchown - .long sys_setresuid - .long sys_getresuid - .long sys_setresgid /* 210 */ - .long sys_getresgid - .long sys_lchown - .long sys_setuid - .long sys_setgid - .long sys_setfsuid /* 215 */ - .long sys_setfsgid - .long sys_pivot_root - .long sys_ni_syscall - .long sys_ni_syscall - .long sys_getdents64 /* 220 */ - .long sys_gettid - .long sys_tkill - .long sys_setxattr - .long sys_lsetxattr - .long sys_fsetxattr /* 225 */ - .long sys_getxattr - .long sys_lgetxattr - .long sys_fgetxattr - .long sys_listxattr - .long sys_llistxattr /* 230 */ - .long sys_flistxattr - .long sys_removexattr - .long sys_lremovexattr - .long sys_fremovexattr - .long sys_futex /* 235 */ - .long sys_sendfile64 - .long sys_mincore - .long sys_madvise - .long sys_fcntl64 - .long sys_readahead /* 240 */ - .long sys_io_setup - .long sys_io_destroy - .long sys_io_getevents - .long sys_io_submit - .long sys_io_cancel /* 245 */ - .long sys_fadvise64 - .long sys_exit_group - .long sys_lookup_dcookie - .long sys_epoll_create - .long sys_epoll_ctl /* 250 */ - .long sys_epoll_wait - .long sys_remap_file_pages - .long sys_set_tid_address - .long sys_timer_create - .long sys_timer_settime /* 255 */ - .long sys_timer_gettime - .long sys_timer_getoverrun - .long sys_timer_delete - .long sys_clock_settime - .long sys_clock_gettime /* 260 */ - .long sys_clock_getres - .long sys_clock_nanosleep - .long sys_statfs64 - .long sys_fstatfs64 - .long sys_tgkill /* 265 */ - .long sys_utimes - .long sys_fadvise64_64 - .long sys_mbind - .long sys_get_mempolicy - .long sys_set_mempolicy /* 270 */ - .long sys_mq_open - .long sys_mq_unlink - .long sys_mq_timedsend - .long sys_mq_timedreceive - .long sys_mq_notify /* 275 */ - .long sys_mq_getsetattr - .long sys_waitid - .long sys_ni_syscall /* for sys_vserver */ - .long sys_add_key - .long sys_request_key /* 280 */ - .long sys_keyctl - .long sys_ioprio_set - .long sys_ioprio_get - .long sys_inotify_init - .long sys_inotify_add_watch /* 285 */ - .long sys_inotify_rm_watch - .long sys_migrate_pages - .long sys_openat - .long sys_mkdirat - .long sys_mknodat /* 290 */ - .long sys_fchownat - .long sys_futimesat - .long sys_fstatat64 - .long sys_unlinkat - .long sys_renameat /* 295 */ - .long sys_linkat - .long sys_symlinkat - .long sys_readlinkat - .long sys_fchmodat - .long sys_faccessat /* 300 */ - .long sys_ni_syscall /* Reserved for pselect6 */ - .long sys_ni_syscall /* Reserved for ppoll */ - .long sys_unshare - .long sys_set_robust_list - .long sys_get_robust_list /* 305 */ - .long sys_splice - .long sys_sync_file_range - .long sys_tee - .long sys_vmsplice - .long sys_move_pages /* 310 */ - .long sys_sched_setaffinity - .long sys_sched_getaffinity - .long sys_kexec_load - .long sys_getcpu - .long sys_epoll_pwait /* 315 */ - .long sys_utimensat - .long sys_signalfd - .long sys_timerfd_create - .long sys_eventfd - .long sys_fallocate /* 320 */ - .long sys_timerfd_settime - .long sys_timerfd_gettime - .long sys_signalfd4 - .long sys_eventfd2 - .long sys_epoll_create1 /* 325 */ - .long sys_dup3 - .long sys_pipe2 - .long sys_inotify_init1 - .long sys_preadv - .long sys_pwritev /* 330 */ - .long sys_rt_tgsigqueueinfo - .long sys_perf_event_open - .long sys_get_thread_area - .long sys_set_thread_area - .long sys_atomic_cmpxchg_32 /* 335 */ - .long sys_atomic_barrier - .long sys_fanotify_init - .long sys_fanotify_mark - .long sys_prlimit64 - diff --git a/arch/m68k/kernel/entry_mm.S b/arch/m68k/kernel/entry_mm.S new file mode 100644 index 0000000..1559dea --- /dev/null +++ b/arch/m68k/kernel/entry_mm.S @@ -0,0 +1,753 @@ +/* -*- mode: asm -*- + * + * linux/arch/m68k/kernel/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * + */ + +/* + * entry.S contains the system-call and fault low-level handling routines. + * This also contains the timer-interrupt handler, as well as all interrupts + * and faults that can result in a task-switch. + * + * NOTE: This code handles signal-recognition, which happens every time + * after a timer-interrupt and after each system call. + * + */ + +/* + * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so + * all pointers that used to be 'current' are now entry + * number 0 in the 'current_set' list. + * + * 6/05/00 RZ: addedd writeback completion after return from sighandler + * for 68040 + */ + +#include <linux/linkage.h> +#include <asm/entry.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/traps.h> +#include <asm/unistd.h> + +#include <asm/asm-offsets.h> + +.globl system_call, buserr, trap, resume +.globl sys_call_table +.globl sys_fork, sys_clone, sys_vfork +.globl ret_from_interrupt, bad_interrupt +.globl auto_irqhandler_fixup +.globl user_irqvec_fixup, user_irqhandler_fixup + +.text +ENTRY(buserr) + SAVE_ALL_INT + GET_CURRENT(%d0) + movel %sp,%sp@- | stack frame pointer argument + bsrl buserr_c + addql #4,%sp + jra .Lret_from_exception + +ENTRY(trap) + SAVE_ALL_INT + GET_CURRENT(%d0) + movel %sp,%sp@- | stack frame pointer argument + bsrl trap_c + addql #4,%sp + jra .Lret_from_exception + + | After a fork we jump here directly from resume, + | so that %d1 contains the previous task + | schedule_tail now used regardless of CONFIG_SMP +ENTRY(ret_from_fork) + movel %d1,%sp@- + jsr schedule_tail + addql #4,%sp + jra .Lret_from_exception + +do_trace_entry: + movel #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace + RESTORE_SWITCH_STACK + addql #4,%sp + movel %sp@(PT_OFF_ORIG_D0),%d0 + cmpl #NR_syscalls,%d0 + jcs syscall +badsys: + movel #-ENOSYS,%sp@(PT_OFF_D0) + jra ret_from_syscall + +do_trace_exit: + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace + RESTORE_SWITCH_STACK + addql #4,%sp + jra .Lret_from_exception + +ENTRY(ret_from_signal) + tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) + jge 1f + jbsr syscall_trace +1: RESTORE_SWITCH_STACK + addql #4,%sp +/* on 68040 complete pending writebacks if any */ +#ifdef CONFIG_M68040 + bfextu %sp@(PT_OFF_FORMATVEC){#0,#4},%d0 + subql #7,%d0 | bus error frame ? + jbne 1f + movel %sp,%sp@- + jbsr berr_040cleanup + addql #4,%sp +1: +#endif + jra .Lret_from_exception + +ENTRY(system_call) + SAVE_ALL_SYS + + GET_CURRENT(%d1) + | save top of frame + movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) + + | syscall trace? + tstb %curptr@(TASK_INFO+TINFO_FLAGS+2) + jmi do_trace_entry + cmpl #NR_syscalls,%d0 + jcc badsys +syscall: + jbsr @(sys_call_table,%d0:l:4)@(0) + movel %d0,%sp@(PT_OFF_D0) | save the return value +ret_from_syscall: + |oriw #0x0700,%sr + movew %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0 + jne syscall_exit_work +1: RESTORE_ALL + +syscall_exit_work: + btst #5,%sp@(PT_OFF_SR) | check if returning to kernel + bnes 1b | if so, skip resched, signals + lslw #1,%d0 + jcs do_trace_exit + jmi do_delayed_trace + lslw #8,%d0 + jmi do_signal_return + pea resume_userspace + jra schedule + + +ENTRY(ret_from_exception) +.Lret_from_exception: + btst #5,%sp@(PT_OFF_SR) | check if returning to kernel + bnes 1f | if so, skip resched, signals + | only allow interrupts when we are really the last one on the + | kernel stack, otherwise stack overflow can occur during + | heavy interrupt load + andw #ALLOWINT,%sr + +resume_userspace: + moveb %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0 + jne exit_work +1: RESTORE_ALL + +exit_work: + | save top of frame + movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) + lslb #1,%d0 + jmi do_signal_return + pea resume_userspace + jra schedule + + +do_signal_return: + |andw #ALLOWINT,%sr + subql #4,%sp | dummy return address + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + bsrl do_signal + addql #4,%sp + RESTORE_SWITCH_STACK + addql #4,%sp + jbra resume_userspace + +do_delayed_trace: + bclr #7,%sp@(PT_OFF_SR) | clear trace bit in SR + pea 1 | send SIGTRAP + movel %curptr,%sp@- + pea LSIGTRAP + jbsr send_sig + addql #8,%sp + addql #4,%sp + jbra resume_userspace + + +/* This is the main interrupt handler for autovector interrupts */ + +ENTRY(auto_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + | put exception # in d0 + bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 + subw #VEC_SPUR,%d0 + + movel %sp,%sp@- + movel %d0,%sp@- | put vector # on stack +auto_irqhandler_fixup = . + 2 + jsr __m68k_handle_int | process the IRQ + addql #8,%sp | pop parameters off stack + +ret_from_interrupt: + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt +2: RESTORE_ALL + + ALIGN +ret_from_last_interrupt: + moveq #(~ALLOWINT>>8)&0xff,%d0 + andb %sp@(PT_OFF_SR),%d0 + jne 2b + + /* check if we need to do software interrupts */ + tstl irq_stat+CPUSTAT_SOFTIRQ_PENDING + jeq .Lret_from_exception + pea ret_from_exception + jra do_softirq + +/* Handler for user defined interrupt vectors */ + +ENTRY(user_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + | put exception # in d0 + bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 +user_irqvec_fixup = . + 2 + subw #VEC_USER,%d0 + + movel %sp,%sp@- + movel %d0,%sp@- | put vector # on stack +user_irqhandler_fixup = . + 2 + jsr __m68k_handle_int | process the IRQ + addql #8,%sp | pop parameters off stack + + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt + RESTORE_ALL + +/* Handler for uninitialized and spurious interrupts */ + +ENTRY(bad_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + + movel %sp,%sp@- + jsr handle_badint + addql #4,%sp + + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt + RESTORE_ALL + + +ENTRY(sys_fork) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_fork + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_clone) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_clone + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_vfork) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_vfork + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_sigreturn) + SAVE_SWITCH_STACK + jbsr do_sigreturn + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_rt_sigreturn) + SAVE_SWITCH_STACK + jbsr do_rt_sigreturn + RESTORE_SWITCH_STACK + rts + +resume: + /* + * Beware - when entering resume, prev (the current task) is + * in a0, next (the new task) is in a1,so don't change these + * registers until their contents are no longer needed. + */ + + /* save sr */ + movew %sr,%a0@(TASK_THREAD+THREAD_SR) + + /* save fs (sfc,%dfc) (may be pointing to kernel memory) */ + movec %sfc,%d0 + movew %d0,%a0@(TASK_THREAD+THREAD_FS) + + /* save usp */ + /* it is better to use a movel here instead of a movew 8*) */ + movec %usp,%d0 + movel %d0,%a0@(TASK_THREAD+THREAD_USP) + + /* save non-scratch registers on stack */ + SAVE_SWITCH_STACK + + /* save current kernel stack pointer */ + movel %sp,%a0@(TASK_THREAD+THREAD_KSP) + + /* save floating point context */ +#ifndef CONFIG_M68KFPU_EMU_ONLY +#ifdef CONFIG_M68KFPU_EMU + tstl m68k_fputype + jeq 3f +#endif + fsave %a0@(TASK_THREAD+THREAD_FPSTATE) + +#if defined(CONFIG_M68060) +#if !defined(CPU_M68060_ONLY) + btst #3,m68k_cputype+3 + beqs 1f +#endif + /* The 060 FPU keeps status in bits 15-8 of the first longword */ + tstb %a0@(TASK_THREAD+THREAD_FPSTATE+2) + jeq 3f +#if !defined(CPU_M68060_ONLY) + jra 2f +#endif +#endif /* CONFIG_M68060 */ +#if !defined(CPU_M68060_ONLY) +1: tstb %a0@(TASK_THREAD+THREAD_FPSTATE) + jeq 3f +#endif +2: fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG) + fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL) +3: +#endif /* CONFIG_M68KFPU_EMU_ONLY */ + /* Return previous task in %d1 */ + movel %curptr,%d1 + + /* switch to new task (a1 contains new task) */ + movel %a1,%curptr + + /* restore floating point context */ +#ifndef CONFIG_M68KFPU_EMU_ONLY +#ifdef CONFIG_M68KFPU_EMU + tstl m68k_fputype + jeq 4f +#endif +#if defined(CONFIG_M68060) +#if !defined(CPU_M68060_ONLY) + btst #3,m68k_cputype+3 + beqs 1f +#endif + /* The 060 FPU keeps status in bits 15-8 of the first longword */ + tstb %a1@(TASK_THREAD+THREAD_FPSTATE+2) + jeq 3f +#if !defined(CPU_M68060_ONLY) + jra 2f +#endif +#endif /* CONFIG_M68060 */ +#if !defined(CPU_M68060_ONLY) +1: tstb %a1@(TASK_THREAD+THREAD_FPSTATE) + jeq 3f +#endif +2: fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7 + fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar +3: frestore %a1@(TASK_THREAD+THREAD_FPSTATE) +4: +#endif /* CONFIG_M68KFPU_EMU_ONLY */ + + /* restore the kernel stack pointer */ + movel %a1@(TASK_THREAD+THREAD_KSP),%sp + + /* restore non-scratch registers */ + RESTORE_SWITCH_STACK + + /* restore user stack pointer */ + movel %a1@(TASK_THREAD+THREAD_USP),%a0 + movel %a0,%usp + + /* restore fs (sfc,%dfc) */ + movew %a1@(TASK_THREAD+THREAD_FS),%a0 + movec %a0,%sfc + movec %a0,%dfc + + /* restore status register */ + movew %a1@(TASK_THREAD+THREAD_SR),%sr + + rts + +.data +ALIGN +sys_call_table: + .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ + .long sys_exit + .long sys_fork + .long sys_read + .long sys_write + .long sys_open /* 5 */ + .long sys_close + .long sys_waitpid + .long sys_creat + .long sys_link + .long sys_unlink /* 10 */ + .long sys_execve + .long sys_chdir + .long sys_time + .long sys_mknod + .long sys_chmod /* 15 */ + .long sys_chown16 + .long sys_ni_syscall /* old break syscall holder */ + .long sys_stat + .long sys_lseek + .long sys_getpid /* 20 */ + .long sys_mount + .long sys_oldumount + .long sys_setuid16 + .long sys_getuid16 + .long sys_stime /* 25 */ + .long sys_ptrace + .long sys_alarm + .long sys_fstat + .long sys_pause + .long sys_utime /* 30 */ + .long sys_ni_syscall /* old stty syscall holder */ + .long sys_ni_syscall /* old gtty syscall holder */ + .long sys_access + .long sys_nice + .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */ + .long sys_sync + .long sys_kill + .long sys_rename + .long sys_mkdir + .long sys_rmdir /* 40 */ + .long sys_dup + .long sys_pipe + .long sys_times + .long sys_ni_syscall /* old prof syscall holder */ + .long sys_brk /* 45 */ + .long sys_setgid16 + .long sys_getgid16 + .long sys_signal + .long sys_geteuid16 + .long sys_getegid16 /* 50 */ + .long sys_acct + .long sys_umount /* recycled never used phys() */ + .long sys_ni_syscall /* old lock syscall holder */ + .long sys_ioctl + .long sys_fcntl /* 55 */ + .long sys_ni_syscall /* old mpx syscall holder */ + .long sys_setpgid + .long sys_ni_syscall /* old ulimit syscall holder */ + .long sys_ni_syscall + .long sys_umask /* 60 */ + .long sys_chroot + .long sys_ustat + .long sys_dup2 + .long sys_getppid + .long sys_getpgrp /* 65 */ + .long sys_setsid + .long sys_sigaction + .long sys_sgetmask + .long sys_ssetmask + .long sys_setreuid16 /* 70 */ + .long sys_setregid16 + .long sys_sigsuspend + .long sys_sigpending + .long sys_sethostname + .long sys_setrlimit /* 75 */ + .long sys_old_getrlimit + .long sys_getrusage + .long sys_gettimeofday + .long sys_settimeofday + .long sys_getgroups16 /* 80 */ + .long sys_setgroups16 + .long sys_old_select + .long sys_symlink + .long sys_lstat + .long sys_readlink /* 85 */ + .long sys_uselib + .long sys_swapon + .long sys_reboot + .long sys_old_readdir + .long sys_old_mmap /* 90 */ + .long sys_munmap + .long sys_truncate + .long sys_ftruncate + .long sys_fchmod + .long sys_fchown16 /* 95 */ + .long sys_getpriority + .long sys_setpriority + .long sys_ni_syscall /* old profil syscall holder */ + .long sys_statfs + .long sys_fstatfs /* 100 */ + .long sys_ni_syscall /* ioperm for i386 */ + .long sys_socketcall + .long sys_syslog + .long sys_setitimer + .long sys_getitimer /* 105 */ + .long sys_newstat + .long sys_newlstat + .long sys_newfstat + .long sys_ni_syscall + .long sys_ni_syscall /* 110 */ /* iopl for i386 */ + .long sys_vhangup + .long sys_ni_syscall /* obsolete idle() syscall */ + .long sys_ni_syscall /* vm86old for i386 */ + .long sys_wait4 + .long sys_swapoff /* 115 */ + .long sys_sysinfo + .long sys_ipc + .long sys_fsync + .long sys_sigreturn + .long sys_clone /* 120 */ + .long sys_setdomainname + .long sys_newuname + .long sys_cacheflush /* modify_ldt for i386 */ + .long sys_adjtimex + .long sys_mprotect /* 125 */ + .long sys_sigprocmask + .long sys_ni_syscall /* old "create_module" */ + .long sys_init_module + .long sys_delete_module + .long sys_ni_syscall /* 130 - old "get_kernel_syms" */ + .long sys_quotactl + .long sys_getpgid + .long sys_fchdir + .long sys_bdflush + .long sys_sysfs /* 135 */ + .long sys_personality + .long sys_ni_syscall /* for afs_syscall */ + .long sys_setfsuid16 + .long sys_setfsgid16 + .long sys_llseek /* 140 */ + .long sys_getdents + .long sys_select + .long sys_flock + .long sys_msync + .long sys_readv /* 145 */ + .long sys_writev + .long sys_getsid + .long sys_fdatasync + .long sys_sysctl + .long sys_mlock /* 150 */ + .long sys_munlock + .long sys_mlockall + .long sys_munlockall + .long sys_sched_setparam + .long sys_sched_getparam /* 155 */ + .long sys_sched_setscheduler + .long sys_sched_getscheduler + .long sys_sched_yield + .long sys_sched_get_priority_max + .long sys_sched_get_priority_min /* 160 */ + .long sys_sched_rr_get_interval + .long sys_nanosleep + .long sys_mremap + .long sys_setresuid16 + .long sys_getresuid16 /* 165 */ + .long sys_getpagesize + .long sys_ni_syscall /* old sys_query_module */ + .long sys_poll + .long sys_nfsservctl + .long sys_setresgid16 /* 170 */ + .long sys_getresgid16 + .long sys_prctl + .long sys_rt_sigreturn + .long sys_rt_sigaction + .long sys_rt_sigprocmask /* 175 */ + .long sys_rt_sigpending + .long sys_rt_sigtimedwait + .long sys_rt_sigqueueinfo + .long sys_rt_sigsuspend + .long sys_pread64 /* 180 */ + .long sys_pwrite64 + .long sys_lchown16; + .long sys_getcwd + .long sys_capget + .long sys_capset /* 185 */ + .long sys_sigaltstack + .long sys_sendfile + .long sys_ni_syscall /* streams1 */ + .long sys_ni_syscall /* streams2 */ + .long sys_vfork /* 190 */ + .long sys_getrlimit + .long sys_mmap2 + .long sys_truncate64 + .long sys_ftruncate64 + .long sys_stat64 /* 195 */ + .long sys_lstat64 + .long sys_fstat64 + .long sys_chown + .long sys_getuid + .long sys_getgid /* 200 */ + .long sys_geteuid + .long sys_getegid + .long sys_setreuid + .long sys_setregid + .long sys_getgroups /* 205 */ + .long sys_setgroups + .long sys_fchown + .long sys_setresuid + .long sys_getresuid + .long sys_setresgid /* 210 */ + .long sys_getresgid + .long sys_lchown + .long sys_setuid + .long sys_setgid + .long sys_setfsuid /* 215 */ + .long sys_setfsgid + .long sys_pivot_root + .long sys_ni_syscall + .long sys_ni_syscall + .long sys_getdents64 /* 220 */ + .long sys_gettid + .long sys_tkill + .long sys_setxattr + .long sys_lsetxattr + .long sys_fsetxattr /* 225 */ + .long sys_getxattr + .long sys_lgetxattr + .long sys_fgetxattr + .long sys_listxattr + .long sys_llistxattr /* 230 */ + .long sys_flistxattr + .long sys_removexattr + .long sys_lremovexattr + .long sys_fremovexattr + .long sys_futex /* 235 */ + .long sys_sendfile64 + .long sys_mincore + .long sys_madvise + .long sys_fcntl64 + .long sys_readahead /* 240 */ + .long sys_io_setup + .long sys_io_destroy + .long sys_io_getevents + .long sys_io_submit + .long sys_io_cancel /* 245 */ + .long sys_fadvise64 + .long sys_exit_group + .long sys_lookup_dcookie + .long sys_epoll_create + .long sys_epoll_ctl /* 250 */ + .long sys_epoll_wait + .long sys_remap_file_pages + .long sys_set_tid_address + .long sys_timer_create + .long sys_timer_settime /* 255 */ + .long sys_timer_gettime + .long sys_timer_getoverrun + .long sys_timer_delete + .long sys_clock_settime + .long sys_clock_gettime /* 260 */ + .long sys_clock_getres + .long sys_clock_nanosleep + .long sys_statfs64 + .long sys_fstatfs64 + .long sys_tgkill /* 265 */ + .long sys_utimes + .long sys_fadvise64_64 + .long sys_mbind + .long sys_get_mempolicy + .long sys_set_mempolicy /* 270 */ + .long sys_mq_open + .long sys_mq_unlink + .long sys_mq_timedsend + .long sys_mq_timedreceive + .long sys_mq_notify /* 275 */ + .long sys_mq_getsetattr + .long sys_waitid + .long sys_ni_syscall /* for sys_vserver */ + .long sys_add_key + .long sys_request_key /* 280 */ + .long sys_keyctl + .long sys_ioprio_set + .long sys_ioprio_get + .long sys_inotify_init + .long sys_inotify_add_watch /* 285 */ + .long sys_inotify_rm_watch + .long sys_migrate_pages + .long sys_openat + .long sys_mkdirat + .long sys_mknodat /* 290 */ + .long sys_fchownat + .long sys_futimesat + .long sys_fstatat64 + .long sys_unlinkat + .long sys_renameat /* 295 */ + .long sys_linkat + .long sys_symlinkat + .long sys_readlinkat + .long sys_fchmodat + .long sys_faccessat /* 300 */ + .long sys_ni_syscall /* Reserved for pselect6 */ + .long sys_ni_syscall /* Reserved for ppoll */ + .long sys_unshare + .long sys_set_robust_list + .long sys_get_robust_list /* 305 */ + .long sys_splice + .long sys_sync_file_range + .long sys_tee + .long sys_vmsplice + .long sys_move_pages /* 310 */ + .long sys_sched_setaffinity + .long sys_sched_getaffinity + .long sys_kexec_load + .long sys_getcpu + .long sys_epoll_pwait /* 315 */ + .long sys_utimensat + .long sys_signalfd + .long sys_timerfd_create + .long sys_eventfd + .long sys_fallocate /* 320 */ + .long sys_timerfd_settime + .long sys_timerfd_gettime + .long sys_signalfd4 + .long sys_eventfd2 + .long sys_epoll_create1 /* 325 */ + .long sys_dup3 + .long sys_pipe2 + .long sys_inotify_init1 + .long sys_preadv + .long sys_pwritev /* 330 */ + .long sys_rt_tgsigqueueinfo + .long sys_perf_event_open + .long sys_get_thread_area + .long sys_set_thread_area + .long sys_atomic_cmpxchg_32 /* 335 */ + .long sys_atomic_barrier + .long sys_fanotify_init + .long sys_fanotify_mark + .long sys_prlimit64 + diff --git a/arch/m68k/kernel/entry_no.S b/arch/m68k/kernel/entry_no.S new file mode 100644 index 0000000..2783f25 --- /dev/null +++ b/arch/m68k/kernel/entry_no.S @@ -0,0 +1,134 @@ +/* + * linux/arch/m68knommu/kernel/entry.S + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * Copyright (C) 2000 Lineo Inc. (www.lineo.com) + * + * Based on: + * + * linux/arch/m68k/kernel/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * ColdFire support by Greg Ungerer (gerg@snapgear.com) + * 5307 fixes by David W. Miller + * linux 2.4 support David McCullough <davidm@snapgear.com> + */ + +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/asm-offsets.h> +#include <asm/entry.h> +#include <asm/unistd.h> + +.text + +.globl buserr +.globl trap +.globl ret_from_exception +.globl ret_from_signal +.globl sys_fork +.globl sys_clone +.globl sys_vfork + +ENTRY(buserr) + SAVE_ALL + moveq #-1,%d0 + movel %d0,%sp@(PT_OFF_ORIG_D0) + movel %sp,%sp@- /* stack frame pointer argument */ + jsr buserr_c + addql #4,%sp + jra ret_from_exception + +ENTRY(trap) + SAVE_ALL + moveq #-1,%d0 + movel %d0,%sp@(PT_OFF_ORIG_D0) + movel %sp,%sp@- /* stack frame pointer argument */ + jsr trap_c + addql #4,%sp + jra ret_from_exception + +#ifdef TRAP_DBG_INTERRUPT + +.globl dbginterrupt +ENTRY(dbginterrupt) + SAVE_ALL + moveq #-1,%d0 + movel %d0,%sp@(PT_OFF_ORIG_D0) + movel %sp,%sp@- /* stack frame pointer argument */ + jsr dbginterrupt_c + addql #4,%sp + jra ret_from_exception +#endif + +ENTRY(reschedule) + /* save top of frame */ + pea %sp@ + jbsr set_esp0 + addql #4,%sp + pea ret_from_exception + jmp schedule + +ENTRY(ret_from_fork) + movel %d1,%sp@- + jsr schedule_tail + addql #4,%sp + jra ret_from_exception + +ENTRY(sys_fork) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_fork + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_vfork) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_vfork + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_clone) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_clone + addql #4,%sp + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_sigreturn) + SAVE_SWITCH_STACK + jbsr do_sigreturn + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_rt_sigreturn) + SAVE_SWITCH_STACK + jbsr do_rt_sigreturn + RESTORE_SWITCH_STACK + rts + +ENTRY(ret_from_user_signal) + moveq #__NR_sigreturn,%d0 + trap #0 + +ENTRY(ret_from_user_rt_signal) + movel #__NR_rt_sigreturn,%d0 + trap #0 + diff --git a/arch/m68k/kernel/init_task.c b/arch/m68k/kernel/init_task.c new file mode 100644 index 0000000..cbf9dc3 --- /dev/null +++ b/arch/m68k/kernel/init_task.c @@ -0,0 +1,36 @@ +/* + * linux/arch/m68knommu/kernel/init_task.c + */ +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/init_task.h> +#include <linux/fs.h> +#include <linux/mqueue.h> + +#include <asm/uaccess.h> +#include <asm/pgtable.h> + +static struct signal_struct init_signals = INIT_SIGNALS(init_signals); +static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); +/* + * Initial task structure. + * + * All other task structs will be allocated on slabs in fork.c + */ +__asm__(".align 4"); +struct task_struct init_task = INIT_TASK(init_task); + +EXPORT_SYMBOL(init_task); + +/* + * Initial thread structure. + * + * We need to make sure that this is 8192-byte aligned due to the + * way process stacks are handled. This is done by having a special + * "init_task" linker map entry.. + */ +union thread_union init_thread_union __init_task_data = + { INIT_THREAD_INFO(init_task) }; + diff --git a/arch/m68k/kernel/irq.c b/arch/m68k/kernel/irq.c new file mode 100644 index 0000000..c7dd48f --- /dev/null +++ b/arch/m68k/kernel/irq.c @@ -0,0 +1,58 @@ +/* + * irq.c + * + * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/kernel_stat.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/seq_file.h> +#include <asm/system.h> +#include <asm/traps.h> + +asmlinkage void do_IRQ(int irq, struct pt_regs *regs) +{ + struct pt_regs *oldregs = set_irq_regs(regs); + + irq_enter(); + generic_handle_irq(irq); + irq_exit(); + + set_irq_regs(oldregs); +} + +int show_interrupts(struct seq_file *p, void *v) +{ + struct irqaction *ap; + int irq = *((loff_t *) v); + + if (irq == 0) + seq_puts(p, " CPU0\n"); + + if (irq < NR_IRQS) { + struct irq_desc *desc = irq_to_desc(irq); + + ap = desc->action; + if (ap) { + seq_printf(p, "%3d: ", irq); + seq_printf(p, "%10u ", kstat_irqs(irq)); + seq_printf(p, "%14s ", get_irq_desc_chip(desc)->name); + + seq_printf(p, "%s", ap->name); + for (ap = ap->next; ap; ap = ap->next) + seq_printf(p, ", %s", ap->name); + seq_putc(p, '\n'); + } + } + + return 0; +} + diff --git a/arch/m68k/kernel/m68k_ksyms.c b/arch/m68k/kernel/m68k_ksyms.c index d900e77..4752c28 100644 --- a/arch/m68k/kernel/m68k_ksyms.c +++ b/arch/m68k/kernel/m68k_ksyms.c @@ -1,16 +1,5 @@ -#include <linux/module.h> - -asmlinkage long long __ashldi3 (long long, int); -asmlinkage long long __ashrdi3 (long long, int); -asmlinkage long long __lshrdi3 (long long, int); -asmlinkage long long __muldi3 (long long, long long); - -/* The following are special because they're not called - explicitly (the C compiler generates them). Fortunately, - their interface isn't gonna change any time soon now, so - it's OK to leave it out of version control. */ -EXPORT_SYMBOL(__ashldi3); -EXPORT_SYMBOL(__ashrdi3); -EXPORT_SYMBOL(__lshrdi3); -EXPORT_SYMBOL(__muldi3); - +#ifdef CONFIG_MMU +#include "m68k_ksyms_mm.c" +#else +#include "m68k_ksyms_no.c" +#endif diff --git a/arch/m68k/kernel/m68k_ksyms_mm.c b/arch/m68k/kernel/m68k_ksyms_mm.c new file mode 100644 index 0000000..d900e77 --- /dev/null +++ b/arch/m68k/kernel/m68k_ksyms_mm.c @@ -0,0 +1,16 @@ +#include <linux/module.h> + +asmlinkage long long __ashldi3 (long long, int); +asmlinkage long long __ashrdi3 (long long, int); +asmlinkage long long __lshrdi3 (long long, int); +asmlinkage long long __muldi3 (long long, long long); + +/* The following are special because they're not called + explicitly (the C compiler generates them). Fortunately, + their interface isn't gonna change any time soon now, so + it's OK to leave it out of version control. */ +EXPORT_SYMBOL(__ashldi3); +EXPORT_SYMBOL(__ashrdi3); +EXPORT_SYMBOL(__lshrdi3); +EXPORT_SYMBOL(__muldi3); + diff --git a/arch/m68k/kernel/m68k_ksyms_no.c b/arch/m68k/kernel/m68k_ksyms_no.c new file mode 100644 index 0000000..39fe0a7 --- /dev/null +++ b/arch/m68k/kernel/m68k_ksyms_no.c @@ -0,0 +1,78 @@ +#include <linux/module.h> +#include <linux/linkage.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/user.h> +#include <linux/elfcore.h> +#include <linux/in6.h> +#include <linux/interrupt.h> + +#include <asm/setup.h> +#include <asm/machdep.h> +#include <asm/pgalloc.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/checksum.h> +#include <asm/current.h> + +extern int dump_fpu(struct pt_regs *, elf_fpregset_t *); + +/* platform dependent support */ + +EXPORT_SYMBOL(__ioremap); +EXPORT_SYMBOL(iounmap); +EXPORT_SYMBOL(dump_fpu); + +EXPORT_SYMBOL(ip_fast_csum); + +EXPORT_SYMBOL(kernel_thread); + +/* Networking helper routines. */ +EXPORT_SYMBOL(csum_partial_copy_nocheck); + +/* The following are special because they're not called + explicitly (the C compiler generates them). Fortunately, + their interface isn't gonna change any time soon now, so + it's OK to leave it out of version control. */ +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memset); + +/* + * libgcc functions - functions that are used internally by the + * compiler... (prototypes are not correct though, but that + * doesn't really matter since they're not versioned). + */ +extern void __ashldi3(void); +extern void __ashrdi3(void); +extern void __divsi3(void); +extern void __lshrdi3(void); +extern void __modsi3(void); +extern void __muldi3(void); +extern void __mulsi3(void); +extern void __udivsi3(void); +extern void __umodsi3(void); + + /* gcc lib functions */ +EXPORT_SYMBOL(__ashldi3); +EXPORT_SYMBOL(__ashrdi3); +EXPORT_SYMBOL(__divsi3); +EXPORT_SYMBOL(__lshrdi3); +EXPORT_SYMBOL(__modsi3); +EXPORT_SYMBOL(__muldi3); +EXPORT_SYMBOL(__mulsi3); +EXPORT_SYMBOL(__udivsi3); +EXPORT_SYMBOL(__umodsi3); + +#ifdef CONFIG_COLDFIRE +extern unsigned int *dma_device_address; +extern unsigned long dma_base_addr, _ramend; +EXPORT_SYMBOL(dma_base_addr); +EXPORT_SYMBOL(dma_device_address); +EXPORT_SYMBOL(_ramend); + +extern asmlinkage void trap(void); +extern void *_ramvec; +EXPORT_SYMBOL(trap); +EXPORT_SYMBOL(_ramvec); +#endif /* CONFIG_COLDFIRE */ diff --git a/arch/m68k/kernel/module.c b/arch/m68k/kernel/module.c index cd6bcb1c9..7ea203c 100644 --- a/arch/m68k/kernel/module.c +++ b/arch/m68k/kernel/module.c @@ -1,155 +1,5 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#include <linux/moduleloader.h> -#include <linux/elf.h> -#include <linux/vmalloc.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/kernel.h> - -#if 0 -#define DEBUGP printk +#ifdef CONFIG_MMU +#include "module_mm.c" #else -#define DEBUGP(fmt...) +#include "module_no.c" #endif - -#ifdef CONFIG_MODULES - -void *module_alloc(unsigned long size) -{ - if (size == 0) - return NULL; - return vmalloc(size); -} - - -/* Free memory returned from module_alloc */ -void module_free(struct module *mod, void *module_region) -{ - vfree(module_region); -} - -/* We don't need anything special. */ -int module_frob_arch_sections(Elf_Ehdr *hdr, - Elf_Shdr *sechdrs, - char *secstrings, - struct module *mod) -{ - return 0; -} - -int apply_relocate(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - unsigned int i; - Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; - Elf32_Sym *sym; - uint32_t *location; - - DEBUGP("Applying relocate section %u to %u\n", relsec, - sechdrs[relsec].sh_info); - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - /* This is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset; - /* This is the symbol it is referring to. Note that all - undefined symbols have been resolved. */ - sym = (Elf32_Sym *)sechdrs[symindex].sh_addr - + ELF32_R_SYM(rel[i].r_info); - - switch (ELF32_R_TYPE(rel[i].r_info)) { - case R_68K_32: - /* We add the value into the location given */ - *location += sym->st_value; - break; - case R_68K_PC32: - /* Add the value, subtract its postition */ - *location += sym->st_value - (uint32_t)location; - break; - default: - printk(KERN_ERR "module %s: Unknown relocation: %u\n", - me->name, ELF32_R_TYPE(rel[i].r_info)); - return -ENOEXEC; - } - } - return 0; -} - -int apply_relocate_add(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - unsigned int i; - Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr; - Elf32_Sym *sym; - uint32_t *location; - - DEBUGP("Applying relocate_add section %u to %u\n", relsec, - sechdrs[relsec].sh_info); - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - /* This is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset; - /* This is the symbol it is referring to. Note that all - undefined symbols have been resolved. */ - sym = (Elf32_Sym *)sechdrs[symindex].sh_addr - + ELF32_R_SYM(rel[i].r_info); - - switch (ELF32_R_TYPE(rel[i].r_info)) { - case R_68K_32: - /* We add the value into the location given */ - *location = rel[i].r_addend + sym->st_value; - break; - case R_68K_PC32: - /* Add the value, subtract its postition */ - *location = rel[i].r_addend + sym->st_value - (uint32_t)location; - break; - default: - printk(KERN_ERR "module %s: Unknown relocation: %u\n", - me->name, ELF32_R_TYPE(rel[i].r_info)); - return -ENOEXEC; - } - } - return 0; -} - -int module_finalize(const Elf_Ehdr *hdr, - const Elf_Shdr *sechdrs, - struct module *mod) -{ - module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end); - - return 0; -} - -void module_arch_cleanup(struct module *mod) -{ -} - -#endif /* CONFIG_MODULES */ - -void module_fixup(struct module *mod, struct m68k_fixup_info *start, - struct m68k_fixup_info *end) -{ - struct m68k_fixup_info *fixup; - - for (fixup = start; fixup < end; fixup++) { - switch (fixup->type) { - case m68k_fixup_memoffset: - *(u32 *)fixup->addr = m68k_memoffset; - break; - case m68k_fixup_vnode_shift: - *(u16 *)fixup->addr += m68k_virt_to_node_shift; - break; - } - } -} diff --git a/arch/m68k/kernel/module_mm.c b/arch/m68k/kernel/module_mm.c new file mode 100644 index 0000000..cd6bcb1c9 --- /dev/null +++ b/arch/m68k/kernel/module_mm.c @@ -0,0 +1,155 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/moduleloader.h> +#include <linux/elf.h> +#include <linux/vmalloc.h> +#include <linux/fs.h> +#include <linux/string.h> +#include <linux/kernel.h> + +#if 0 +#define DEBUGP printk +#else +#define DEBUGP(fmt...) +#endif + +#ifdef CONFIG_MODULES + +void *module_alloc(unsigned long size) +{ + if (size == 0) + return NULL; + return vmalloc(size); +} + + +/* Free memory returned from module_alloc */ +void module_free(struct module *mod, void *module_region) +{ + vfree(module_region); +} + +/* We don't need anything special. */ +int module_frob_arch_sections(Elf_Ehdr *hdr, + Elf_Shdr *sechdrs, + char *secstrings, + struct module *mod) +{ + return 0; +} + +int apply_relocate(Elf32_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me) +{ + unsigned int i; + Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; + Elf32_Sym *sym; + uint32_t *location; + + DEBUGP("Applying relocate section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { + /* This is where to make the change */ + location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + + rel[i].r_offset; + /* This is the symbol it is referring to. Note that all + undefined symbols have been resolved. */ + sym = (Elf32_Sym *)sechdrs[symindex].sh_addr + + ELF32_R_SYM(rel[i].r_info); + + switch (ELF32_R_TYPE(rel[i].r_info)) { + case R_68K_32: + /* We add the value into the location given */ + *location += sym->st_value; + break; + case R_68K_PC32: + /* Add the value, subtract its postition */ + *location += sym->st_value - (uint32_t)location; + break; + default: + printk(KERN_ERR "module %s: Unknown relocation: %u\n", + me->name, ELF32_R_TYPE(rel[i].r_info)); + return -ENOEXEC; + } + } + return 0; +} + +int apply_relocate_add(Elf32_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me) +{ + unsigned int i; + Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr; + Elf32_Sym *sym; + uint32_t *location; + + DEBUGP("Applying relocate_add section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { + /* This is where to make the change */ + location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + + rel[i].r_offset; + /* This is the symbol it is referring to. Note that all + undefined symbols have been resolved. */ + sym = (Elf32_Sym *)sechdrs[symindex].sh_addr + + ELF32_R_SYM(rel[i].r_info); + + switch (ELF32_R_TYPE(rel[i].r_info)) { + case R_68K_32: + /* We add the value into the location given */ + *location = rel[i].r_addend + sym->st_value; + break; + case R_68K_PC32: + /* Add the value, subtract its postition */ + *location = rel[i].r_addend + sym->st_value - (uint32_t)location; + break; + default: + printk(KERN_ERR "module %s: Unknown relocation: %u\n", + me->name, ELF32_R_TYPE(rel[i].r_info)); + return -ENOEXEC; + } + } + return 0; +} + +int module_finalize(const Elf_Ehdr *hdr, + const Elf_Shdr *sechdrs, + struct module *mod) +{ + module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end); + + return 0; +} + +void module_arch_cleanup(struct module *mod) +{ +} + +#endif /* CONFIG_MODULES */ + +void module_fixup(struct module *mod, struct m68k_fixup_info *start, + struct m68k_fixup_info *end) +{ + struct m68k_fixup_info *fixup; + + for (fixup = start; fixup < end; fixup++) { + switch (fixup->type) { + case m68k_fixup_memoffset: + *(u32 *)fixup->addr = m68k_memoffset; + break; + case m68k_fixup_vnode_shift: + *(u16 *)fixup->addr += m68k_virt_to_node_shift; + break; + } + } +} diff --git a/arch/m68k/kernel/module_no.c b/arch/m68k/kernel/module_no.c new file mode 100644 index 0000000..d11ffae --- /dev/null +++ b/arch/m68k/kernel/module_no.c @@ -0,0 +1,126 @@ +#include <linux/moduleloader.h> +#include <linux/elf.h> +#include <linux/vmalloc.h> +#include <linux/fs.h> +#include <linux/string.h> +#include <linux/kernel.h> + +#if 0 +#define DEBUGP printk +#else +#define DEBUGP(fmt...) +#endif + +void *module_alloc(unsigned long size) +{ + if (size == 0) + return NULL; + return vmalloc(size); +} + + +/* Free memory returned from module_alloc */ +void module_free(struct module *mod, void *module_region) +{ + vfree(module_region); +} + +/* We don't need anything special. */ +int module_frob_arch_sections(Elf_Ehdr *hdr, + Elf_Shdr *sechdrs, + char *secstrings, + struct module *mod) +{ + return 0; +} + +int apply_relocate(Elf32_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me) +{ + unsigned int i; + Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; + Elf32_Sym *sym; + uint32_t *location; + + DEBUGP("Applying relocate section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { + /* This is where to make the change */ + location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + + rel[i].r_offset; + /* This is the symbol it is referring to. Note that all + undefined symbols have been resolved. */ + sym = (Elf32_Sym *)sechdrs[symindex].sh_addr + + ELF32_R_SYM(rel[i].r_info); + + switch (ELF32_R_TYPE(rel[i].r_info)) { + case R_68K_32: + /* We add the value into the location given */ + *location += sym->st_value; + break; + case R_68K_PC32: + /* Add the value, subtract its postition */ + *location += sym->st_value - (uint32_t)location; + break; + default: + printk(KERN_ERR "module %s: Unknown relocation: %u\n", + me->name, ELF32_R_TYPE(rel[i].r_info)); + return -ENOEXEC; + } + } + return 0; +} + +int apply_relocate_add(Elf32_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me) +{ + unsigned int i; + Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr; + Elf32_Sym *sym; + uint32_t *location; + + DEBUGP("Applying relocate_add section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { + /* This is where to make the change */ + location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + + rel[i].r_offset; + /* This is the symbol it is referring to. Note that all + undefined symbols have been resolved. */ + sym = (Elf32_Sym *)sechdrs[symindex].sh_addr + + ELF32_R_SYM(rel[i].r_info); + + switch (ELF32_R_TYPE(rel[i].r_info)) { + case R_68K_32: + /* We add the value into the location given */ + *location = rel[i].r_addend + sym->st_value; + break; + case R_68K_PC32: + /* Add the value, subtract its postition */ + *location = rel[i].r_addend + sym->st_value - (uint32_t)location; + break; + default: + printk(KERN_ERR "module %s: Unknown relocation: %u\n", + me->name, ELF32_R_TYPE(rel[i].r_info)); + return -ENOEXEC; + } + } + return 0; +} + +int module_finalize(const Elf_Ehdr *hdr, + const Elf_Shdr *sechdrs, + struct module *me) +{ + return 0; +} + +void module_arch_cleanup(struct module *mod) +{ +} diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index c2a1fc2..6cf4bd6 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -1,354 +1,5 @@ -/* - * linux/arch/m68k/kernel/process.c - * - * Copyright (C) 1995 Hamish Macdonald - * - * 68060 fixes by Jesper Skov - */ - -/* - * This file handles the architecture-dependent parts of process handling.. - */ - -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/smp.h> -#include <linux/stddef.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/reboot.h> -#include <linux/init_task.h> -#include <linux/mqueue.h> - -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/traps.h> -#include <asm/machdep.h> -#include <asm/setup.h> -#include <asm/pgtable.h> - -/* - * Initial task/thread structure. Make this a per-architecture thing, - * because different architectures tend to have different - * alignment requirements and potentially different initial - * setup. - */ -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -union thread_union init_thread_union __init_task_data - __attribute__((aligned(THREAD_SIZE))) = - { INIT_THREAD_INFO(init_task) }; - -/* initial task structure */ -struct task_struct init_task = INIT_TASK(init_task); - -EXPORT_SYMBOL(init_task); - -asmlinkage void ret_from_fork(void); - - -/* - * Return saved PC from a blocked thread - */ -unsigned long thread_saved_pc(struct task_struct *tsk) -{ - struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp; - /* Check whether the thread is blocked in resume() */ - if (in_sched_functions(sw->retpc)) - return ((unsigned long *)sw->a6)[1]; - else - return sw->retpc; -} - -/* - * The idle loop on an m68k.. - */ -static void default_idle(void) -{ - if (!need_resched()) -#if defined(MACH_ATARI_ONLY) - /* block out HSYNC on the atari (falcon) */ - __asm__("stop #0x2200" : : : "cc"); +#ifdef CONFIG_MMU +#include "process_mm.c" #else - __asm__("stop #0x2000" : : : "cc"); +#include "process_no.c" #endif -} - -void (*idle)(void) = default_idle; - -/* - * The idle thread. There's no useful work to be - * done, so just try to conserve power and have a - * low exit latency (ie sit in a loop waiting for - * somebody to say that they'd like to reschedule) - */ -void cpu_idle(void) -{ - /* endless idle loop with no priority at all */ - while (1) { - while (!need_resched()) - idle(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); - } -} - -void machine_restart(char * __unused) -{ - if (mach_reset) - mach_reset(); - for (;;); -} - -void machine_halt(void) -{ - if (mach_halt) - mach_halt(); - for (;;); -} - -void machine_power_off(void) -{ - if (mach_power_off) - mach_power_off(); - for (;;); -} - -void (*pm_power_off)(void) = machine_power_off; -EXPORT_SYMBOL(pm_power_off); - -void show_regs(struct pt_regs * regs) -{ - printk("\n"); - printk("Format %02x Vector: %04x PC: %08lx Status: %04x %s\n", - regs->format, regs->vector, regs->pc, regs->sr, print_tainted()); - printk("ORIG_D0: %08lx D0: %08lx A2: %08lx A1: %08lx\n", - regs->orig_d0, regs->d0, regs->a2, regs->a1); - printk("A0: %08lx D5: %08lx D4: %08lx\n", - regs->a0, regs->d5, regs->d4); - printk("D3: %08lx D2: %08lx D1: %08lx\n", - regs->d3, regs->d2, regs->d1); - if (!(regs->sr & PS_S)) - printk("USP: %08lx\n", rdusp()); -} - -/* - * Create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) -{ - int pid; - mm_segment_t fs; - - fs = get_fs(); - set_fs (KERNEL_DS); - - { - register long retval __asm__ ("d0"); - register long clone_arg __asm__ ("d1") = flags | CLONE_VM | CLONE_UNTRACED; - - retval = __NR_clone; - __asm__ __volatile__ - ("clrl %%d2\n\t" - "trap #0\n\t" /* Linux/m68k system call */ - "tstl %0\n\t" /* child or parent */ - "jne 1f\n\t" /* parent - jump */ - "lea %%sp@(%c7),%6\n\t" /* reload current */ - "movel %6@,%6\n\t" - "movel %3,%%sp@-\n\t" /* push argument */ - "jsr %4@\n\t" /* call fn */ - "movel %0,%%d1\n\t" /* pass exit value */ - "movel %2,%%d0\n\t" /* exit */ - "trap #0\n" - "1:" - : "+d" (retval) - : "i" (__NR_clone), "i" (__NR_exit), - "r" (arg), "a" (fn), "d" (clone_arg), "r" (current), - "i" (-THREAD_SIZE) - : "d2"); - - pid = retval; - } - - set_fs (fs); - return pid; -} -EXPORT_SYMBOL(kernel_thread); - -void flush_thread(void) -{ - unsigned long zero = 0; - set_fs(USER_DS); - current->thread.fs = __USER_DS; - if (!FPU_IS_EMU) - asm volatile (".chip 68k/68881\n\t" - "frestore %0@\n\t" - ".chip 68k" : : "a" (&zero)); -} - -/* - * "m68k_fork()".. By the time we get here, the - * non-volatile registers have also been saved on the - * stack. We do some ugly pointer stuff here.. (see - * also copy_thread) - */ - -asmlinkage int m68k_fork(struct pt_regs *regs) -{ - return do_fork(SIGCHLD, rdusp(), regs, 0, NULL, NULL); -} - -asmlinkage int m68k_vfork(struct pt_regs *regs) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, - NULL, NULL); -} - -asmlinkage int m68k_clone(struct pt_regs *regs) -{ - unsigned long clone_flags; - unsigned long newsp; - int __user *parent_tidptr, *child_tidptr; - - /* syscall2 puts clone_flags in d1 and usp in d2 */ - clone_flags = regs->d1; - newsp = regs->d2; - parent_tidptr = (int __user *)regs->d3; - child_tidptr = (int __user *)regs->d4; - if (!newsp) - newsp = rdusp(); - return do_fork(clone_flags, newsp, regs, 0, - parent_tidptr, child_tidptr); -} - -int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long unused, - struct task_struct * p, struct pt_regs * regs) -{ - struct pt_regs * childregs; - struct switch_stack * childstack, *stack; - unsigned long *retp; - - childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1; - - *childregs = *regs; - childregs->d0 = 0; - - retp = ((unsigned long *) regs); - stack = ((struct switch_stack *) retp) - 1; - - childstack = ((struct switch_stack *) childregs) - 1; - *childstack = *stack; - childstack->retpc = (unsigned long)ret_from_fork; - - p->thread.usp = usp; - p->thread.ksp = (unsigned long)childstack; - - if (clone_flags & CLONE_SETTLS) - task_thread_info(p)->tp_value = regs->d5; - - /* - * Must save the current SFC/DFC value, NOT the value when - * the parent was last descheduled - RGH 10-08-96 - */ - p->thread.fs = get_fs().seg; - - if (!FPU_IS_EMU) { - /* Copy the current fpu state */ - asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory"); - - if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) - asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t" - "fmoveml %/fpiar/%/fpcr/%/fpsr,%1" - : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0]) - : "memory"); - /* Restore the state in case the fpu was busy */ - asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0])); - } - - return 0; -} - -/* Fill in the fpu structure for a core dump. */ - -int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu) -{ - char fpustate[216]; - - if (FPU_IS_EMU) { - int i; - - memcpy(fpu->fpcntl, current->thread.fpcntl, 12); - memcpy(fpu->fpregs, current->thread.fp, 96); - /* Convert internal fpu reg representation - * into long double format - */ - for (i = 0; i < 24; i += 3) - fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) | - ((fpu->fpregs[i] & 0x0000ffff) << 16); - return 1; - } - - /* First dump the fpu context to avoid protocol violation. */ - asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); - if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2]) - return 0; - - asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" - :: "m" (fpu->fpcntl[0]) - : "memory"); - asm volatile ("fmovemx %/fp0-%/fp7,%0" - :: "m" (fpu->fpregs[0]) - : "memory"); - return 1; -} -EXPORT_SYMBOL(dump_fpu); - -/* - * sys_execve() executes a new program. - */ -asmlinkage int sys_execve(const char __user *name, - const char __user *const __user *argv, - const char __user *const __user *envp) -{ - int error; - char * filename; - struct pt_regs *regs = (struct pt_regs *) &name; - - filename = getname(name); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - return error; - error = do_execve(filename, argv, envp, regs); - putname(filename); - return error; -} - -unsigned long get_wchan(struct task_struct *p) -{ - unsigned long fp, pc; - unsigned long stack_page; - int count = 0; - if (!p || p == current || p->state == TASK_RUNNING) - return 0; - - stack_page = (unsigned long)task_stack_page(p); - fp = ((struct switch_stack *)p->thread.ksp)->a6; - do { - if (fp < stack_page+sizeof(struct thread_info) || - fp >= 8184+stack_page) - return 0; - pc = ((unsigned long *)fp)[1]; - if (!in_sched_functions(pc)) - return pc; - fp = *(unsigned long *) fp; - } while (count++ < 16); - return 0; -} diff --git a/arch/m68k/kernel/process_mm.c b/arch/m68k/kernel/process_mm.c new file mode 100644 index 0000000..c2a1fc2 --- /dev/null +++ b/arch/m68k/kernel/process_mm.c @@ -0,0 +1,354 @@ +/* + * linux/arch/m68k/kernel/process.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * 68060 fixes by Jesper Skov + */ + +/* + * This file handles the architecture-dependent parts of process handling.. + */ + +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/fs.h> +#include <linux/smp.h> +#include <linux/stddef.h> +#include <linux/unistd.h> +#include <linux/ptrace.h> +#include <linux/user.h> +#include <linux/reboot.h> +#include <linux/init_task.h> +#include <linux/mqueue.h> + +#include <asm/uaccess.h> +#include <asm/system.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/setup.h> +#include <asm/pgtable.h> + +/* + * Initial task/thread structure. Make this a per-architecture thing, + * because different architectures tend to have different + * alignment requirements and potentially different initial + * setup. + */ +static struct signal_struct init_signals = INIT_SIGNALS(init_signals); +static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); +union thread_union init_thread_union __init_task_data + __attribute__((aligned(THREAD_SIZE))) = + { INIT_THREAD_INFO(init_task) }; + +/* initial task structure */ +struct task_struct init_task = INIT_TASK(init_task); + +EXPORT_SYMBOL(init_task); + +asmlinkage void ret_from_fork(void); + + +/* + * Return saved PC from a blocked thread + */ +unsigned long thread_saved_pc(struct task_struct *tsk) +{ + struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp; + /* Check whether the thread is blocked in resume() */ + if (in_sched_functions(sw->retpc)) + return ((unsigned long *)sw->a6)[1]; + else + return sw->retpc; +} + +/* + * The idle loop on an m68k.. + */ +static void default_idle(void) +{ + if (!need_resched()) +#if defined(MACH_ATARI_ONLY) + /* block out HSYNC on the atari (falcon) */ + __asm__("stop #0x2200" : : : "cc"); +#else + __asm__("stop #0x2000" : : : "cc"); +#endif +} + +void (*idle)(void) = default_idle; + +/* + * The idle thread. There's no useful work to be + * done, so just try to conserve power and have a + * low exit latency (ie sit in a loop waiting for + * somebody to say that they'd like to reschedule) + */ +void cpu_idle(void) +{ + /* endless idle loop with no priority at all */ + while (1) { + while (!need_resched()) + idle(); + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } +} + +void machine_restart(char * __unused) +{ + if (mach_reset) + mach_reset(); + for (;;); +} + +void machine_halt(void) +{ + if (mach_halt) + mach_halt(); + for (;;); +} + +void machine_power_off(void) +{ + if (mach_power_off) + mach_power_off(); + for (;;); +} + +void (*pm_power_off)(void) = machine_power_off; +EXPORT_SYMBOL(pm_power_off); + +void show_regs(struct pt_regs * regs) +{ + printk("\n"); + printk("Format %02x Vector: %04x PC: %08lx Status: %04x %s\n", + regs->format, regs->vector, regs->pc, regs->sr, print_tainted()); + printk("ORIG_D0: %08lx D0: %08lx A2: %08lx A1: %08lx\n", + regs->orig_d0, regs->d0, regs->a2, regs->a1); + printk("A0: %08lx D5: %08lx D4: %08lx\n", + regs->a0, regs->d5, regs->d4); + printk("D3: %08lx D2: %08lx D1: %08lx\n", + regs->d3, regs->d2, regs->d1); + if (!(regs->sr & PS_S)) + printk("USP: %08lx\n", rdusp()); +} + +/* + * Create a kernel thread + */ +int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) +{ + int pid; + mm_segment_t fs; + + fs = get_fs(); + set_fs (KERNEL_DS); + + { + register long retval __asm__ ("d0"); + register long clone_arg __asm__ ("d1") = flags | CLONE_VM | CLONE_UNTRACED; + + retval = __NR_clone; + __asm__ __volatile__ + ("clrl %%d2\n\t" + "trap #0\n\t" /* Linux/m68k system call */ + "tstl %0\n\t" /* child or parent */ + "jne 1f\n\t" /* parent - jump */ + "lea %%sp@(%c7),%6\n\t" /* reload current */ + "movel %6@,%6\n\t" + "movel %3,%%sp@-\n\t" /* push argument */ + "jsr %4@\n\t" /* call fn */ + "movel %0,%%d1\n\t" /* pass exit value */ + "movel %2,%%d0\n\t" /* exit */ + "trap #0\n" + "1:" + : "+d" (retval) + : "i" (__NR_clone), "i" (__NR_exit), + "r" (arg), "a" (fn), "d" (clone_arg), "r" (current), + "i" (-THREAD_SIZE) + : "d2"); + + pid = retval; + } + + set_fs (fs); + return pid; +} +EXPORT_SYMBOL(kernel_thread); + +void flush_thread(void) +{ + unsigned long zero = 0; + set_fs(USER_DS); + current->thread.fs = __USER_DS; + if (!FPU_IS_EMU) + asm volatile (".chip 68k/68881\n\t" + "frestore %0@\n\t" + ".chip 68k" : : "a" (&zero)); +} + +/* + * "m68k_fork()".. By the time we get here, the + * non-volatile registers have also been saved on the + * stack. We do some ugly pointer stuff here.. (see + * also copy_thread) + */ + +asmlinkage int m68k_fork(struct pt_regs *regs) +{ + return do_fork(SIGCHLD, rdusp(), regs, 0, NULL, NULL); +} + +asmlinkage int m68k_vfork(struct pt_regs *regs) +{ + return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, + NULL, NULL); +} + +asmlinkage int m68k_clone(struct pt_regs *regs) +{ + unsigned long clone_flags; + unsigned long newsp; + int __user *parent_tidptr, *child_tidptr; + + /* syscall2 puts clone_flags in d1 and usp in d2 */ + clone_flags = regs->d1; + newsp = regs->d2; + parent_tidptr = (int __user *)regs->d3; + child_tidptr = (int __user *)regs->d4; + if (!newsp) + newsp = rdusp(); + return do_fork(clone_flags, newsp, regs, 0, + parent_tidptr, child_tidptr); +} + +int copy_thread(unsigned long clone_flags, unsigned long usp, + unsigned long unused, + struct task_struct * p, struct pt_regs * regs) +{ + struct pt_regs * childregs; + struct switch_stack * childstack, *stack; + unsigned long *retp; + + childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1; + + *childregs = *regs; + childregs->d0 = 0; + + retp = ((unsigned long *) regs); + stack = ((struct switch_stack *) retp) - 1; + + childstack = ((struct switch_stack *) childregs) - 1; + *childstack = *stack; + childstack->retpc = (unsigned long)ret_from_fork; + + p->thread.usp = usp; + p->thread.ksp = (unsigned long)childstack; + + if (clone_flags & CLONE_SETTLS) + task_thread_info(p)->tp_value = regs->d5; + + /* + * Must save the current SFC/DFC value, NOT the value when + * the parent was last descheduled - RGH 10-08-96 + */ + p->thread.fs = get_fs().seg; + + if (!FPU_IS_EMU) { + /* Copy the current fpu state */ + asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory"); + + if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) + asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t" + "fmoveml %/fpiar/%/fpcr/%/fpsr,%1" + : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0]) + : "memory"); + /* Restore the state in case the fpu was busy */ + asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0])); + } + + return 0; +} + +/* Fill in the fpu structure for a core dump. */ + +int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu) +{ + char fpustate[216]; + + if (FPU_IS_EMU) { + int i; + + memcpy(fpu->fpcntl, current->thread.fpcntl, 12); + memcpy(fpu->fpregs, current->thread.fp, 96); + /* Convert internal fpu reg representation + * into long double format + */ + for (i = 0; i < 24; i += 3) + fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) | + ((fpu->fpregs[i] & 0x0000ffff) << 16); + return 1; + } + + /* First dump the fpu context to avoid protocol violation. */ + asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); + if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2]) + return 0; + + asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" + :: "m" (fpu->fpcntl[0]) + : "memory"); + asm volatile ("fmovemx %/fp0-%/fp7,%0" + :: "m" (fpu->fpregs[0]) + : "memory"); + return 1; +} +EXPORT_SYMBOL(dump_fpu); + +/* + * sys_execve() executes a new program. + */ +asmlinkage int sys_execve(const char __user *name, + const char __user *const __user *argv, + const char __user *const __user *envp) +{ + int error; + char * filename; + struct pt_regs *regs = (struct pt_regs *) &name; + + filename = getname(name); + error = PTR_ERR(filename); + if (IS_ERR(filename)) + return error; + error = do_execve(filename, argv, envp, regs); + putname(filename); + return error; +} + +unsigned long get_wchan(struct task_struct *p) +{ + unsigned long fp, pc; + unsigned long stack_page; + int count = 0; + if (!p || p == current || p->state == TASK_RUNNING) + return 0; + + stack_page = (unsigned long)task_stack_page(p); + fp = ((struct switch_stack *)p->thread.ksp)->a6; + do { + if (fp < stack_page+sizeof(struct thread_info) || + fp >= 8184+stack_page) + return 0; + pc = ((unsigned long *)fp)[1]; + if (!in_sched_functions(pc)) + return pc; + fp = *(unsigned long *) fp; + } while (count++ < 16); + return 0; +} diff --git a/arch/m68k/kernel/process_no.c b/arch/m68k/kernel/process_no.c new file mode 100644 index 0000000..e2a63af --- /dev/null +++ b/arch/m68k/kernel/process_no.c @@ -0,0 +1,404 @@ +/* + * linux/arch/m68knommu/kernel/process.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * + * uClinux changes + * Copyright (C) 2000-2002, David McCullough <davidm@snapgear.com> + */ + +/* + * This file handles the architecture-dependent parts of process handling.. + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/stddef.h> +#include <linux/unistd.h> +#include <linux/ptrace.h> +#include <linux/user.h> +#include <linux/interrupt.h> +#include <linux/reboot.h> +#include <linux/fs.h> +#include <linux/slab.h> + +#include <asm/uaccess.h> +#include <asm/system.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/setup.h> +#include <asm/pgtable.h> + +asmlinkage void ret_from_fork(void); + +/* + * The following aren't currently used. + */ +void (*pm_idle)(void); +EXPORT_SYMBOL(pm_idle); + +void (*pm_power_off)(void); +EXPORT_SYMBOL(pm_power_off); + +/* + * The idle loop on an m68knommu.. + */ +static void default_idle(void) +{ + local_irq_disable(); + while (!need_resched()) { + /* This stop will re-enable interrupts */ + __asm__("stop #0x2000" : : : "cc"); + local_irq_disable(); + } + local_irq_enable(); +} + +void (*idle)(void) = default_idle; + +/* + * The idle thread. There's no useful work to be + * done, so just try to conserve power and have a + * low exit latency (ie sit in a loop waiting for + * somebody to say that they'd like to reschedule) + */ +void cpu_idle(void) +{ + /* endless idle loop with no priority at all */ + while (1) { + idle(); + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } +} + +void machine_restart(char * __unused) +{ + if (mach_reset) + mach_reset(); + for (;;); +} + +void machine_halt(void) +{ + if (mach_halt) + mach_halt(); + for (;;); +} + +void machine_power_off(void) +{ + if (mach_power_off) + mach_power_off(); + for (;;); +} + +void show_regs(struct pt_regs * regs) +{ + printk(KERN_NOTICE "\n"); + printk(KERN_NOTICE "Format %02x Vector: %04x PC: %08lx Status: %04x %s\n", + regs->format, regs->vector, regs->pc, regs->sr, print_tainted()); + printk(KERN_NOTICE "ORIG_D0: %08lx D0: %08lx A2: %08lx A1: %08lx\n", + regs->orig_d0, regs->d0, regs->a2, regs->a1); + printk(KERN_NOTICE "A0: %08lx D5: %08lx D4: %08lx\n", + regs->a0, regs->d5, regs->d4); + printk(KERN_NOTICE "D3: %08lx D2: %08lx D1: %08lx\n", + regs->d3, regs->d2, regs->d1); + if (!(regs->sr & PS_S)) + printk(KERN_NOTICE "USP: %08lx\n", rdusp()); +} + +/* + * Create a kernel thread + */ +int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) +{ + int retval; + long clone_arg = flags | CLONE_VM; + mm_segment_t fs; + + fs = get_fs(); + set_fs(KERNEL_DS); + + __asm__ __volatile__ ( + "movel %%sp, %%d2\n\t" + "movel %5, %%d1\n\t" + "movel %1, %%d0\n\t" + "trap #0\n\t" + "cmpl %%sp, %%d2\n\t" + "jeq 1f\n\t" + "movel %3, %%sp@-\n\t" + "jsr %4@\n\t" + "movel %2, %%d0\n\t" + "trap #0\n" + "1:\n\t" + "movel %%d0, %0\n" + : "=d" (retval) + : "i" (__NR_clone), + "i" (__NR_exit), + "a" (arg), + "a" (fn), + "a" (clone_arg) + : "cc", "%d0", "%d1", "%d2"); + + set_fs(fs); + return retval; +} + +void flush_thread(void) +{ +#ifdef CONFIG_FPU + unsigned long zero = 0; +#endif + set_fs(USER_DS); + current->thread.fs = __USER_DS; +#ifdef CONFIG_FPU + if (!FPU_IS_EMU) + asm volatile (".chip 68k/68881\n\t" + "frestore %0@\n\t" + ".chip 68k" : : "a" (&zero)); +#endif +} + +/* + * "m68k_fork()".. By the time we get here, the + * non-volatile registers have also been saved on the + * stack. We do some ugly pointer stuff here.. (see + * also copy_thread) + */ + +asmlinkage int m68k_fork(struct pt_regs *regs) +{ + /* fork almost works, enough to trick you into looking elsewhere :-( */ + return(-EINVAL); +} + +asmlinkage int m68k_vfork(struct pt_regs *regs) +{ + return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, NULL, NULL); +} + +asmlinkage int m68k_clone(struct pt_regs *regs) +{ + unsigned long clone_flags; + unsigned long newsp; + + /* syscall2 puts clone_flags in d1 and usp in d2 */ + clone_flags = regs->d1; + newsp = regs->d2; + if (!newsp) + newsp = rdusp(); + return do_fork(clone_flags, newsp, regs, 0, NULL, NULL); +} + +int copy_thread(unsigned long clone_flags, + unsigned long usp, unsigned long topstk, + struct task_struct * p, struct pt_regs * regs) +{ + struct pt_regs * childregs; + struct switch_stack * childstack, *stack; + unsigned long *retp; + + childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1; + + *childregs = *regs; + childregs->d0 = 0; + + retp = ((unsigned long *) regs); + stack = ((struct switch_stack *) retp) - 1; + + childstack = ((struct switch_stack *) childregs) - 1; + *childstack = *stack; + childstack->retpc = (unsigned long)ret_from_fork; + + p->thread.usp = usp; + p->thread.ksp = (unsigned long)childstack; + + if (clone_flags & CLONE_SETTLS) + task_thread_info(p)->tp_value = regs->d5; + + /* + * Must save the current SFC/DFC value, NOT the value when + * the parent was last descheduled - RGH 10-08-96 + */ + p->thread.fs = get_fs().seg; + +#ifdef CONFIG_FPU + if (!FPU_IS_EMU) { + /* Copy the current fpu state */ + asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory"); + + if (p->thread.fpstate[0]) + asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t" + "fmoveml %/fpiar/%/fpcr/%/fpsr,%1" + : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0]) + : "memory"); + /* Restore the state in case the fpu was busy */ + asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0])); + } +#endif + + return 0; +} + +/* Fill in the fpu structure for a core dump. */ + +int dump_fpu(struct pt_regs *regs, struct user_m68kfp_struct *fpu) +{ +#ifdef CONFIG_FPU + char fpustate[216]; + + if (FPU_IS_EMU) { + int i; + + memcpy(fpu->fpcntl, current->thread.fpcntl, 12); + memcpy(fpu->fpregs, current->thread.fp, 96); + /* Convert internal fpu reg representation + * into long double format + */ + for (i = 0; i < 24; i += 3) + fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) | + ((fpu->fpregs[i] & 0x0000ffff) << 16); + return 1; + } + + /* First dump the fpu context to avoid protocol violation. */ + asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); + if (!fpustate[0]) + return 0; + + asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" + :: "m" (fpu->fpcntl[0]) + : "memory"); + asm volatile ("fmovemx %/fp0-%/fp7,%0" + :: "m" (fpu->fpregs[0]) + : "memory"); +#endif + return 1; +} + +/* + * Generic dumping code. Used for panic and debug. + */ +void dump(struct pt_regs *fp) +{ + unsigned long *sp; + unsigned char *tp; + int i; + + printk(KERN_EMERG "\nCURRENT PROCESS:\n\n"); + printk(KERN_EMERG "COMM=%s PID=%d\n", current->comm, current->pid); + + if (current->mm) { + printk(KERN_EMERG "TEXT=%08x-%08x DATA=%08x-%08x BSS=%08x-%08x\n", + (int) current->mm->start_code, + (int) current->mm->end_code, + (int) current->mm->start_data, + (int) current->mm->end_data, + (int) current->mm->end_data, + (int) current->mm->brk); + printk(KERN_EMERG "USER-STACK=%08x KERNEL-STACK=%08x\n\n", + (int) current->mm->start_stack, + (int)(((unsigned long) current) + THREAD_SIZE)); + } + + printk(KERN_EMERG "PC: %08lx\n", fp->pc); + printk(KERN_EMERG "SR: %08lx SP: %08lx\n", (long) fp->sr, (long) fp); + printk(KERN_EMERG "d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n", + fp->d0, fp->d1, fp->d2, fp->d3); + printk(KERN_EMERG "d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n", + fp->d4, fp->d5, fp->a0, fp->a1); + printk(KERN_EMERG "\nUSP: %08x TRAPFRAME: %p\n", + (unsigned int) rdusp(), fp); + + printk(KERN_EMERG "\nCODE:"); + tp = ((unsigned char *) fp->pc) - 0x20; + for (sp = (unsigned long *) tp, i = 0; (i < 0x40); i += 4) { + if ((i % 0x10) == 0) + printk(KERN_EMERG "%p: ", tp + i); + printk("%08x ", (int) *sp++); + } + printk(KERN_EMERG "\n"); + + printk(KERN_EMERG "KERNEL STACK:"); + tp = ((unsigned char *) fp) - 0x40; + for (sp = (unsigned long *) tp, i = 0; (i < 0xc0); i += 4) { + if ((i % 0x10) == 0) + printk(KERN_EMERG "%p: ", tp + i); + printk("%08x ", (int) *sp++); + } + printk(KERN_EMERG "\n"); + + printk(KERN_EMERG "USER STACK:"); + tp = (unsigned char *) (rdusp() - 0x10); + for (sp = (unsigned long *) tp, i = 0; (i < 0x80); i += 4) { + if ((i % 0x10) == 0) + printk(KERN_EMERG "%p: ", tp + i); + printk("%08x ", (int) *sp++); + } + printk(KERN_EMERG "\n"); +} + +/* + * sys_execve() executes a new program. + */ +asmlinkage int sys_execve(const char *name, + const char *const *argv, + const char *const *envp) +{ + int error; + char * filename; + struct pt_regs *regs = (struct pt_regs *) &name; + + filename = getname(name); + error = PTR_ERR(filename); + if (IS_ERR(filename)) + return error; + error = do_execve(filename, argv, envp, regs); + putname(filename); + return error; +} + +unsigned long get_wchan(struct task_struct *p) +{ + unsigned long fp, pc; + unsigned long stack_page; + int count = 0; + if (!p || p == current || p->state == TASK_RUNNING) + return 0; + + stack_page = (unsigned long)p; + fp = ((struct switch_stack *)p->thread.ksp)->a6; + do { + if (fp < stack_page+sizeof(struct thread_info) || + fp >= THREAD_SIZE-8+stack_page) + return 0; + pc = ((unsigned long *)fp)[1]; + if (!in_sched_functions(pc)) + return pc; + fp = *(unsigned long *) fp; + } while (count++ < 16); + return 0; +} + +/* + * Return saved PC of a blocked thread. + */ +unsigned long thread_saved_pc(struct task_struct *tsk) +{ + struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp; + + /* Check whether the thread is blocked in resume() */ + if (in_sched_functions(sw->retpc)) + return ((unsigned long *)sw->a6)[1]; + else + return sw->retpc; +} + diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c index 0b25268..07a4175 100644 --- a/arch/m68k/kernel/ptrace.c +++ b/arch/m68k/kernel/ptrace.c @@ -1,277 +1,5 @@ -/* - * linux/arch/m68k/kernel/ptrace.c - * - * Copyright (C) 1994 by Hamish Macdonald - * Taken from linux/kernel/ptrace.c and modified for M680x0. - * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file COPYING in the main directory of - * this archive for more details. - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/errno.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/signal.h> - -#include <asm/uaccess.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/system.h> -#include <asm/processor.h> - -/* - * does not yet catch signals sent when the child dies. - * in exit.c or in signal.c. - */ - -/* determines which bits in the SR the user has access to. */ -/* 1 = access 0 = no access */ -#define SR_MASK 0x001f - -/* sets the trace bits. */ -#define TRACE_BITS 0xC000 -#define T1_BIT 0x8000 -#define T0_BIT 0x4000 - -/* Find the stack offset for a register, relative to thread.esp0. */ -#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg) -#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \ - - sizeof(struct switch_stack)) -/* Mapping from PT_xxx to the stack offset at which the register is - saved. Notice that usp has no stack-slot and needs to be treated - specially (see get_reg/put_reg below). */ -static const int regoff[] = { - [0] = PT_REG(d1), - [1] = PT_REG(d2), - [2] = PT_REG(d3), - [3] = PT_REG(d4), - [4] = PT_REG(d5), - [5] = SW_REG(d6), - [6] = SW_REG(d7), - [7] = PT_REG(a0), - [8] = PT_REG(a1), - [9] = PT_REG(a2), - [10] = SW_REG(a3), - [11] = SW_REG(a4), - [12] = SW_REG(a5), - [13] = SW_REG(a6), - [14] = PT_REG(d0), - [15] = -1, - [16] = PT_REG(orig_d0), - [17] = PT_REG(sr), - [18] = PT_REG(pc), -}; - -/* - * Get contents of register REGNO in task TASK. - */ -static inline long get_reg(struct task_struct *task, int regno) -{ - unsigned long *addr; - - if (regno == PT_USP) - addr = &task->thread.usp; - else if (regno < ARRAY_SIZE(regoff)) - addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); - else - return 0; - /* Need to take stkadj into account. */ - if (regno == PT_SR || regno == PT_PC) { - long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); - addr = (unsigned long *) ((unsigned long)addr + stkadj); - /* The sr is actually a 16 bit register. */ - if (regno == PT_SR) - return *(unsigned short *)addr; - } - return *addr; -} - -/* - * Write contents of register REGNO in task TASK. - */ -static inline int put_reg(struct task_struct *task, int regno, - unsigned long data) -{ - unsigned long *addr; - - if (regno == PT_USP) - addr = &task->thread.usp; - else if (regno < ARRAY_SIZE(regoff)) - addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); - else - return -1; - /* Need to take stkadj into account. */ - if (regno == PT_SR || regno == PT_PC) { - long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); - addr = (unsigned long *) ((unsigned long)addr + stkadj); - /* The sr is actually a 16 bit register. */ - if (regno == PT_SR) { - *(unsigned short *)addr = data; - return 0; - } - } - *addr = data; - return 0; -} - -/* - * Make sure the single step bit is not set. - */ -static inline void singlestep_disable(struct task_struct *child) -{ - unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; - put_reg(child, PT_SR, tmp); - clear_tsk_thread_flag(child, TIF_DELAYED_TRACE); -} - -/* - * Called by kernel/ptrace.c when detaching.. - */ -void ptrace_disable(struct task_struct *child) -{ - singlestep_disable(child); -} - -void user_enable_single_step(struct task_struct *child) -{ - unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; - put_reg(child, PT_SR, tmp | T1_BIT); - set_tsk_thread_flag(child, TIF_DELAYED_TRACE); -} - -void user_enable_block_step(struct task_struct *child) -{ - unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; - put_reg(child, PT_SR, tmp | T0_BIT); -} - -void user_disable_single_step(struct task_struct *child) -{ - singlestep_disable(child); -} - -long arch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - unsigned long tmp; - int i, ret = 0; - int regno = addr >> 2; /* temporary hack. */ - unsigned long __user *datap = (unsigned long __user *) data; - - switch (request) { - /* read the word at location addr in the USER area. */ - case PTRACE_PEEKUSR: - if (addr & 3) - goto out_eio; - - if (regno >= 0 && regno < 19) { - tmp = get_reg(child, regno); - } else if (regno >= 21 && regno < 49) { - tmp = child->thread.fp[regno - 21]; - /* Convert internal fpu reg representation - * into long double format - */ - if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) - tmp = ((tmp & 0xffff0000) << 15) | - ((tmp & 0x0000ffff) << 16); - } else - goto out_eio; - ret = put_user(tmp, datap); - break; - - case PTRACE_POKEUSR: - /* write the word at location addr in the USER area */ - if (addr & 3) - goto out_eio; - - if (regno == PT_SR) { - data &= SR_MASK; - data |= get_reg(child, PT_SR) & ~SR_MASK; - } - if (regno >= 0 && regno < 19) { - if (put_reg(child, regno, data)) - goto out_eio; - } else if (regno >= 21 && regno < 48) { - /* Convert long double format - * into internal fpu reg representation - */ - if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) { - data <<= 15; - data = (data & 0xffff0000) | - ((data & 0x0000ffff) >> 1); - } - child->thread.fp[regno - 21] = data; - } else - goto out_eio; - break; - - case PTRACE_GETREGS: /* Get all gp regs from the child. */ - for (i = 0; i < 19; i++) { - tmp = get_reg(child, i); - ret = put_user(tmp, datap); - if (ret) - break; - datap++; - } - break; - - case PTRACE_SETREGS: /* Set all gp regs in the child. */ - for (i = 0; i < 19; i++) { - ret = get_user(tmp, datap); - if (ret) - break; - if (i == PT_SR) { - tmp &= SR_MASK; - tmp |= get_reg(child, PT_SR) & ~SR_MASK; - } - put_reg(child, i, tmp); - datap++; - } - break; - - case PTRACE_GETFPREGS: /* Get the child FPU state. */ - if (copy_to_user(datap, &child->thread.fp, - sizeof(struct user_m68kfp_struct))) - ret = -EFAULT; - break; - - case PTRACE_SETFPREGS: /* Set the child FPU state. */ - if (copy_from_user(&child->thread.fp, datap, - sizeof(struct user_m68kfp_struct))) - ret = -EFAULT; - break; - - case PTRACE_GET_THREAD_AREA: - ret = put_user(task_thread_info(child)->tp_value, datap); - break; - - default: - ret = ptrace_request(child, request, addr, data); - break; - } - - return ret; -out_eio: - return -EIO; -} - -asmlinkage void syscall_trace(void) -{ - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); - /* - * this isn't the same as continuing with a signal, but it will do - * for normal use. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; - } -} +#ifdef CONFIG_MMU +#include "ptrace_mm.c" +#else +#include "ptrace_no.c" +#endif diff --git a/arch/m68k/kernel/ptrace_mm.c b/arch/m68k/kernel/ptrace_mm.c new file mode 100644 index 0000000..0b25268 --- /dev/null +++ b/arch/m68k/kernel/ptrace_mm.c @@ -0,0 +1,277 @@ +/* + * linux/arch/m68k/kernel/ptrace.c + * + * Copyright (C) 1994 by Hamish Macdonald + * Taken from linux/kernel/ptrace.c and modified for M680x0. + * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of + * this archive for more details. + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/user.h> +#include <linux/signal.h> + +#include <asm/uaccess.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/system.h> +#include <asm/processor.h> + +/* + * does not yet catch signals sent when the child dies. + * in exit.c or in signal.c. + */ + +/* determines which bits in the SR the user has access to. */ +/* 1 = access 0 = no access */ +#define SR_MASK 0x001f + +/* sets the trace bits. */ +#define TRACE_BITS 0xC000 +#define T1_BIT 0x8000 +#define T0_BIT 0x4000 + +/* Find the stack offset for a register, relative to thread.esp0. */ +#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg) +#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \ + - sizeof(struct switch_stack)) +/* Mapping from PT_xxx to the stack offset at which the register is + saved. Notice that usp has no stack-slot and needs to be treated + specially (see get_reg/put_reg below). */ +static const int regoff[] = { + [0] = PT_REG(d1), + [1] = PT_REG(d2), + [2] = PT_REG(d3), + [3] = PT_REG(d4), + [4] = PT_REG(d5), + [5] = SW_REG(d6), + [6] = SW_REG(d7), + [7] = PT_REG(a0), + [8] = PT_REG(a1), + [9] = PT_REG(a2), + [10] = SW_REG(a3), + [11] = SW_REG(a4), + [12] = SW_REG(a5), + [13] = SW_REG(a6), + [14] = PT_REG(d0), + [15] = -1, + [16] = PT_REG(orig_d0), + [17] = PT_REG(sr), + [18] = PT_REG(pc), +}; + +/* + * Get contents of register REGNO in task TASK. + */ +static inline long get_reg(struct task_struct *task, int regno) +{ + unsigned long *addr; + + if (regno == PT_USP) + addr = &task->thread.usp; + else if (regno < ARRAY_SIZE(regoff)) + addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); + else + return 0; + /* Need to take stkadj into account. */ + if (regno == PT_SR || regno == PT_PC) { + long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); + addr = (unsigned long *) ((unsigned long)addr + stkadj); + /* The sr is actually a 16 bit register. */ + if (regno == PT_SR) + return *(unsigned short *)addr; + } + return *addr; +} + +/* + * Write contents of register REGNO in task TASK. + */ +static inline int put_reg(struct task_struct *task, int regno, + unsigned long data) +{ + unsigned long *addr; + + if (regno == PT_USP) + addr = &task->thread.usp; + else if (regno < ARRAY_SIZE(regoff)) + addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); + else + return -1; + /* Need to take stkadj into account. */ + if (regno == PT_SR || regno == PT_PC) { + long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); + addr = (unsigned long *) ((unsigned long)addr + stkadj); + /* The sr is actually a 16 bit register. */ + if (regno == PT_SR) { + *(unsigned short *)addr = data; + return 0; + } + } + *addr = data; + return 0; +} + +/* + * Make sure the single step bit is not set. + */ +static inline void singlestep_disable(struct task_struct *child) +{ + unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; + put_reg(child, PT_SR, tmp); + clear_tsk_thread_flag(child, TIF_DELAYED_TRACE); +} + +/* + * Called by kernel/ptrace.c when detaching.. + */ +void ptrace_disable(struct task_struct *child) +{ + singlestep_disable(child); +} + +void user_enable_single_step(struct task_struct *child) +{ + unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; + put_reg(child, PT_SR, tmp | T1_BIT); + set_tsk_thread_flag(child, TIF_DELAYED_TRACE); +} + +void user_enable_block_step(struct task_struct *child) +{ + unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; + put_reg(child, PT_SR, tmp | T0_BIT); +} + +void user_disable_single_step(struct task_struct *child) +{ + singlestep_disable(child); +} + +long arch_ptrace(struct task_struct *child, long request, + unsigned long addr, unsigned long data) +{ + unsigned long tmp; + int i, ret = 0; + int regno = addr >> 2; /* temporary hack. */ + unsigned long __user *datap = (unsigned long __user *) data; + + switch (request) { + /* read the word at location addr in the USER area. */ + case PTRACE_PEEKUSR: + if (addr & 3) + goto out_eio; + + if (regno >= 0 && regno < 19) { + tmp = get_reg(child, regno); + } else if (regno >= 21 && regno < 49) { + tmp = child->thread.fp[regno - 21]; + /* Convert internal fpu reg representation + * into long double format + */ + if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) + tmp = ((tmp & 0xffff0000) << 15) | + ((tmp & 0x0000ffff) << 16); + } else + goto out_eio; + ret = put_user(tmp, datap); + break; + + case PTRACE_POKEUSR: + /* write the word at location addr in the USER area */ + if (addr & 3) + goto out_eio; + + if (regno == PT_SR) { + data &= SR_MASK; + data |= get_reg(child, PT_SR) & ~SR_MASK; + } + if (regno >= 0 && regno < 19) { + if (put_reg(child, regno, data)) + goto out_eio; + } else if (regno >= 21 && regno < 48) { + /* Convert long double format + * into internal fpu reg representation + */ + if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) { + data <<= 15; + data = (data & 0xffff0000) | + ((data & 0x0000ffff) >> 1); + } + child->thread.fp[regno - 21] = data; + } else + goto out_eio; + break; + + case PTRACE_GETREGS: /* Get all gp regs from the child. */ + for (i = 0; i < 19; i++) { + tmp = get_reg(child, i); + ret = put_user(tmp, datap); + if (ret) + break; + datap++; + } + break; + + case PTRACE_SETREGS: /* Set all gp regs in the child. */ + for (i = 0; i < 19; i++) { + ret = get_user(tmp, datap); + if (ret) + break; + if (i == PT_SR) { + tmp &= SR_MASK; + tmp |= get_reg(child, PT_SR) & ~SR_MASK; + } + put_reg(child, i, tmp); + datap++; + } + break; + + case PTRACE_GETFPREGS: /* Get the child FPU state. */ + if (copy_to_user(datap, &child->thread.fp, + sizeof(struct user_m68kfp_struct))) + ret = -EFAULT; + break; + + case PTRACE_SETFPREGS: /* Set the child FPU state. */ + if (copy_from_user(&child->thread.fp, datap, + sizeof(struct user_m68kfp_struct))) + ret = -EFAULT; + break; + + case PTRACE_GET_THREAD_AREA: + ret = put_user(task_thread_info(child)->tp_value, datap); + break; + + default: + ret = ptrace_request(child, request, addr, data); + break; + } + + return ret; +out_eio: + return -EIO; +} + +asmlinkage void syscall_trace(void) +{ + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) + ? 0x80 : 0)); + /* + * this isn't the same as continuing with a signal, but it will do + * for normal use. strace only continues with a signal if the + * stopping signal is not SIGTRAP. -brl + */ + if (current->exit_code) { + send_sig(current->exit_code, current, 1); + current->exit_code = 0; + } +} diff --git a/arch/m68k/kernel/ptrace_no.c b/arch/m68k/kernel/ptrace_no.c new file mode 100644 index 0000000..6709fb7 --- /dev/null +++ b/arch/m68k/kernel/ptrace_no.c @@ -0,0 +1,255 @@ +/* + * linux/arch/m68knommu/kernel/ptrace.c + * + * Copyright (C) 1994 by Hamish Macdonald + * Taken from linux/kernel/ptrace.c and modified for M680x0. + * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of + * this archive for more details. + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/user.h> +#include <linux/signal.h> +#include <linux/tracehook.h> + +#include <asm/uaccess.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/system.h> +#include <asm/processor.h> + +/* + * does not yet catch signals sent when the child dies. + * in exit.c or in signal.c. + */ + +/* determines which bits in the SR the user has access to. */ +/* 1 = access 0 = no access */ +#define SR_MASK 0x001f + +/* sets the trace bits. */ +#define TRACE_BITS 0x8000 + +/* Find the stack offset for a register, relative to thread.esp0. */ +#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg) +#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \ + - sizeof(struct switch_stack)) +/* Mapping from PT_xxx to the stack offset at which the register is + saved. Notice that usp has no stack-slot and needs to be treated + specially (see get_reg/put_reg below). */ +static int regoff[] = { + PT_REG(d1), PT_REG(d2), PT_REG(d3), PT_REG(d4), + PT_REG(d5), SW_REG(d6), SW_REG(d7), PT_REG(a0), + PT_REG(a1), PT_REG(a2), SW_REG(a3), SW_REG(a4), + SW_REG(a5), SW_REG(a6), PT_REG(d0), -1, + PT_REG(orig_d0), PT_REG(sr), PT_REG(pc), +}; + +/* + * Get contents of register REGNO in task TASK. + */ +static inline long get_reg(struct task_struct *task, int regno) +{ + unsigned long *addr; + + if (regno == PT_USP) + addr = &task->thread.usp; + else if (regno < ARRAY_SIZE(regoff)) + addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); + else + return 0; + return *addr; +} + +/* + * Write contents of register REGNO in task TASK. + */ +static inline int put_reg(struct task_struct *task, int regno, + unsigned long data) +{ + unsigned long *addr; + + if (regno == PT_USP) + addr = &task->thread.usp; + else if (regno < ARRAY_SIZE(regoff)) + addr = (unsigned long *) (task->thread.esp0 + regoff[regno]); + else + return -1; + *addr = data; + return 0; +} + +void user_enable_single_step(struct task_struct *task) +{ + unsigned long srflags; + srflags = get_reg(task, PT_SR) | (TRACE_BITS << 16); + put_reg(task, PT_SR, srflags); +} + +void user_disable_single_step(struct task_struct *task) +{ + unsigned long srflags; + srflags = get_reg(task, PT_SR) & ~(TRACE_BITS << 16); + put_reg(task, PT_SR, srflags); +} + +/* + * Called by kernel/ptrace.c when detaching.. + * + * Make sure the single step bit is not set. + */ +void ptrace_disable(struct task_struct *child) +{ + /* make sure the single step bit is not set. */ + user_disable_single_step(child); +} + +long arch_ptrace(struct task_struct *child, long request, + unsigned long addr, unsigned long data) +{ + int ret; + int regno = addr >> 2; + unsigned long __user *datap = (unsigned long __user *) data; + + switch (request) { + /* read the word at location addr in the USER area. */ + case PTRACE_PEEKUSR: { + unsigned long tmp; + + ret = -EIO; + if ((addr & 3) || addr > sizeof(struct user) - 3) + break; + + tmp = 0; /* Default return condition */ + ret = -EIO; + if (regno < 19) { + tmp = get_reg(child, regno); + if (regno == PT_SR) + tmp >>= 16; + } else if (regno >= 21 && regno < 49) { + tmp = child->thread.fp[regno - 21]; + } else if (regno == 49) { + tmp = child->mm->start_code; + } else if (regno == 50) { + tmp = child->mm->start_data; + } else if (regno == 51) { + tmp = child->mm->end_code; + } else + break; + ret = put_user(tmp, datap); + break; + } + + case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ + ret = -EIO; + if ((addr & 3) || addr > sizeof(struct user) - 3) + break; + + if (regno == PT_SR) { + data &= SR_MASK; + data <<= 16; + data |= get_reg(child, PT_SR) & ~(SR_MASK << 16); + } + if (regno < 19) { + if (put_reg(child, regno, data)) + break; + ret = 0; + break; + } + if (regno >= 21 && regno < 48) + { + child->thread.fp[regno - 21] = data; + ret = 0; + } + break; + + case PTRACE_GETREGS: { /* Get all gp regs from the child. */ + int i; + unsigned long tmp; + for (i = 0; i < 19; i++) { + tmp = get_reg(child, i); + if (i == PT_SR) + tmp >>= 16; + if (put_user(tmp, datap)) { + ret = -EFAULT; + break; + } + datap++; + } + ret = 0; + break; + } + + case PTRACE_SETREGS: { /* Set all gp regs in the child. */ + int i; + unsigned long tmp; + for (i = 0; i < 19; i++) { + if (get_user(tmp, datap)) { + ret = -EFAULT; + break; + } + if (i == PT_SR) { + tmp &= SR_MASK; + tmp <<= 16; + tmp |= get_reg(child, PT_SR) & ~(SR_MASK << 16); + } + put_reg(child, i, tmp); + datap++; + } + ret = 0; + break; + } + +#ifdef PTRACE_GETFPREGS + case PTRACE_GETFPREGS: { /* Get the child FPU state. */ + ret = 0; + if (copy_to_user(datap, &child->thread.fp, + sizeof(struct user_m68kfp_struct))) + ret = -EFAULT; + break; + } +#endif + +#ifdef PTRACE_SETFPREGS + case PTRACE_SETFPREGS: { /* Set the child FPU state. */ + ret = 0; + if (copy_from_user(&child->thread.fp, datap, + sizeof(struct user_m68kfp_struct))) + ret = -EFAULT; + break; + } +#endif + + case PTRACE_GET_THREAD_AREA: + ret = put_user(task_thread_info(child)->tp_value, datap); + break; + + default: + ret = ptrace_request(child, request, addr, data); + break; + } + return ret; +} + +asmlinkage int syscall_trace_enter(void) +{ + int ret = 0; + + if (test_thread_flag(TIF_SYSCALL_TRACE)) + ret = tracehook_report_syscall_entry(task_pt_regs(current)); + return ret; +} + +asmlinkage void syscall_trace_leave(void) +{ + if (test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(task_pt_regs(current), 0); +} diff --git a/arch/m68k/kernel/setup.c b/arch/m68k/kernel/setup.c index 334d836..4bf129f 100644 --- a/arch/m68k/kernel/setup.c +++ b/arch/m68k/kernel/setup.c @@ -1,533 +1,5 @@ -/* - * linux/arch/m68k/kernel/setup.c - * - * Copyright (C) 1995 Hamish Macdonald - */ - -/* - * This file handles the architecture-dependent parts of system setup - */ - -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/fs.h> -#include <linux/console.h> -#include <linux/genhd.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/bootmem.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/module.h> -#include <linux/initrd.h> - -#include <asm/bootinfo.h> -#include <asm/sections.h> -#include <asm/setup.h> -#include <asm/fpu.h> -#include <asm/irq.h> -#include <asm/io.h> -#include <asm/machdep.h> -#ifdef CONFIG_AMIGA -#include <asm/amigahw.h> -#endif -#ifdef CONFIG_ATARI -#include <asm/atarihw.h> -#include <asm/atari_stram.h> -#endif -#ifdef CONFIG_SUN3X -#include <asm/dvma.h> -#endif -#include <asm/natfeat.h> - -#if !FPSTATESIZE || !NR_IRQS -#warning No CPU/platform type selected, your kernel will not work! -#warning Are you building an allnoconfig kernel? -#endif - -unsigned long m68k_machtype; -EXPORT_SYMBOL(m68k_machtype); -unsigned long m68k_cputype; -EXPORT_SYMBOL(m68k_cputype); -unsigned long m68k_fputype; -unsigned long m68k_mmutype; -EXPORT_SYMBOL(m68k_mmutype); -#ifdef CONFIG_VME -unsigned long vme_brdtype; -EXPORT_SYMBOL(vme_brdtype); -#endif - -int m68k_is040or060; -EXPORT_SYMBOL(m68k_is040or060); - -extern unsigned long availmem; - -int m68k_num_memory; -EXPORT_SYMBOL(m68k_num_memory); -int m68k_realnum_memory; -EXPORT_SYMBOL(m68k_realnum_memory); -unsigned long m68k_memoffset; -struct mem_info m68k_memory[NUM_MEMINFO]; -EXPORT_SYMBOL(m68k_memory); - -struct mem_info m68k_ramdisk; - -static char m68k_command_line[CL_SIZE]; - -void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL; -/* machine dependent irq functions */ -void (*mach_init_IRQ) (void) __initdata = NULL; -void (*mach_get_model) (char *model); -void (*mach_get_hardware_list) (struct seq_file *m); -/* machine dependent timer functions */ -unsigned long (*mach_gettimeoffset) (void); -int (*mach_hwclk) (int, struct rtc_time*); -EXPORT_SYMBOL(mach_hwclk); -int (*mach_set_clock_mmss) (unsigned long); -unsigned int (*mach_get_ss)(void); -int (*mach_get_rtc_pll)(struct rtc_pll_info *); -int (*mach_set_rtc_pll)(struct rtc_pll_info *); -EXPORT_SYMBOL(mach_get_ss); -EXPORT_SYMBOL(mach_get_rtc_pll); -EXPORT_SYMBOL(mach_set_rtc_pll); -void (*mach_reset)( void ); -void (*mach_halt)( void ); -void (*mach_power_off)( void ); -long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */ -#ifdef CONFIG_HEARTBEAT -void (*mach_heartbeat) (int); -EXPORT_SYMBOL(mach_heartbeat); -#endif -#ifdef CONFIG_M68K_L2_CACHE -void (*mach_l2_flush) (int); -#endif -#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE) -void (*mach_beep)(unsigned int, unsigned int); -EXPORT_SYMBOL(mach_beep); -#endif -#if defined(CONFIG_ISA) && defined(MULTI_ISA) -int isa_type; -int isa_sex; -EXPORT_SYMBOL(isa_type); -EXPORT_SYMBOL(isa_sex); -#endif - -extern int amiga_parse_bootinfo(const struct bi_record *); -extern int atari_parse_bootinfo(const struct bi_record *); -extern int mac_parse_bootinfo(const struct bi_record *); -extern int q40_parse_bootinfo(const struct bi_record *); -extern int bvme6000_parse_bootinfo(const struct bi_record *); -extern int mvme16x_parse_bootinfo(const struct bi_record *); -extern int mvme147_parse_bootinfo(const struct bi_record *); -extern int hp300_parse_bootinfo(const struct bi_record *); -extern int apollo_parse_bootinfo(const struct bi_record *); - -extern void config_amiga(void); -extern void config_atari(void); -extern void config_mac(void); -extern void config_sun3(void); -extern void config_apollo(void); -extern void config_mvme147(void); -extern void config_mvme16x(void); -extern void config_bvme6000(void); -extern void config_hp300(void); -extern void config_q40(void); -extern void config_sun3x(void); - -#define MASK_256K 0xfffc0000 - -extern void paging_init(void); - -static void __init m68k_parse_bootinfo(const struct bi_record *record) -{ - while (record->tag != BI_LAST) { - int unknown = 0; - const unsigned long *data = record->data; - - switch (record->tag) { - case BI_MACHTYPE: - case BI_CPUTYPE: - case BI_FPUTYPE: - case BI_MMUTYPE: - /* Already set up by head.S */ - break; - - case BI_MEMCHUNK: - if (m68k_num_memory < NUM_MEMINFO) { - m68k_memory[m68k_num_memory].addr = data[0]; - m68k_memory[m68k_num_memory].size = data[1]; - m68k_num_memory++; - } else - printk("m68k_parse_bootinfo: too many memory chunks\n"); - break; - - case BI_RAMDISK: - m68k_ramdisk.addr = data[0]; - m68k_ramdisk.size = data[1]; - break; - - case BI_COMMAND_LINE: - strlcpy(m68k_command_line, (const char *)data, - sizeof(m68k_command_line)); - break; - - default: - if (MACH_IS_AMIGA) - unknown = amiga_parse_bootinfo(record); - else if (MACH_IS_ATARI) - unknown = atari_parse_bootinfo(record); - else if (MACH_IS_MAC) - unknown = mac_parse_bootinfo(record); - else if (MACH_IS_Q40) - unknown = q40_parse_bootinfo(record); - else if (MACH_IS_BVME6000) - unknown = bvme6000_parse_bootinfo(record); - else if (MACH_IS_MVME16x) - unknown = mvme16x_parse_bootinfo(record); - else if (MACH_IS_MVME147) - unknown = mvme147_parse_bootinfo(record); - else if (MACH_IS_HP300) - unknown = hp300_parse_bootinfo(record); - else if (MACH_IS_APOLLO) - unknown = apollo_parse_bootinfo(record); - else - unknown = 1; - } - if (unknown) - printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n", - record->tag); - record = (struct bi_record *)((unsigned long)record + - record->size); - } - - m68k_realnum_memory = m68k_num_memory; -#ifdef CONFIG_SINGLE_MEMORY_CHUNK - if (m68k_num_memory > 1) { - printk("Ignoring last %i chunks of physical memory\n", - (m68k_num_memory - 1)); - m68k_num_memory = 1; - } -#endif -} - -void __init setup_arch(char **cmdline_p) -{ - int i; - - /* The bootinfo is located right after the kernel bss */ - m68k_parse_bootinfo((const struct bi_record *)_end); - - if (CPU_IS_040) - m68k_is040or060 = 4; - else if (CPU_IS_060) - m68k_is040or060 = 6; - - /* FIXME: m68k_fputype is passed in by Penguin booter, which can - * be confused by software FPU emulation. BEWARE. - * We should really do our own FPU check at startup. - * [what do we do with buggy 68LC040s? if we have problems - * with them, we should add a test to check_bugs() below] */ -#ifndef CONFIG_M68KFPU_EMU_ONLY - /* clear the fpu if we have one */ - if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) { - volatile int zero = 0; - asm volatile ("frestore %0" : : "m" (zero)); - } -#endif - - if (CPU_IS_060) { - u32 pcr; - - asm (".chip 68060; movec %%pcr,%0; .chip 68k" - : "=d" (pcr)); - if (((pcr >> 8) & 0xff) <= 5) { - printk("Enabling workaround for errata I14\n"); - asm (".chip 68060; movec %0,%%pcr; .chip 68k" - : : "d" (pcr | 0x20)); - } - } - - init_mm.start_code = PAGE_OFFSET; - init_mm.end_code = (unsigned long)_etext; - init_mm.end_data = (unsigned long)_edata; - init_mm.brk = (unsigned long)_end; - - *cmdline_p = m68k_command_line; - memcpy(boot_command_line, *cmdline_p, CL_SIZE); - - parse_early_param(); - -#ifdef CONFIG_DUMMY_CONSOLE - conswitchp = &dummy_con; -#endif - - switch (m68k_machtype) { -#ifdef CONFIG_AMIGA - case MACH_AMIGA: - config_amiga(); - break; -#endif -#ifdef CONFIG_ATARI - case MACH_ATARI: - config_atari(); - break; -#endif -#ifdef CONFIG_MAC - case MACH_MAC: - config_mac(); - break; -#endif -#ifdef CONFIG_SUN3 - case MACH_SUN3: - config_sun3(); - break; -#endif -#ifdef CONFIG_APOLLO - case MACH_APOLLO: - config_apollo(); - break; -#endif -#ifdef CONFIG_MVME147 - case MACH_MVME147: - config_mvme147(); - break; -#endif -#ifdef CONFIG_MVME16x - case MACH_MVME16x: - config_mvme16x(); - break; -#endif -#ifdef CONFIG_BVME6000 - case MACH_BVME6000: - config_bvme6000(); - break; -#endif -#ifdef CONFIG_HP300 - case MACH_HP300: - config_hp300(); - break; -#endif -#ifdef CONFIG_Q40 - case MACH_Q40: - config_q40(); - break; -#endif -#ifdef CONFIG_SUN3X - case MACH_SUN3X: - config_sun3x(); - break; -#endif - default: - panic("No configuration setup"); - } - -#ifdef CONFIG_NATFEAT - nf_init(); -#endif - - paging_init(); - -#ifndef CONFIG_SUN3 - for (i = 1; i < m68k_num_memory; i++) - free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr, - m68k_memory[i].size); -#ifdef CONFIG_BLK_DEV_INITRD - if (m68k_ramdisk.size) { - reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)), - m68k_ramdisk.addr, m68k_ramdisk.size, - BOOTMEM_DEFAULT); - initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr); - initrd_end = initrd_start + m68k_ramdisk.size; - printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end); - } -#endif - -#ifdef CONFIG_ATARI - if (MACH_IS_ATARI) - atari_stram_reserve_pages((void *)availmem); -#endif -#ifdef CONFIG_SUN3X - if (MACH_IS_SUN3X) { - dvma_init(); - } -#endif - -#endif /* !CONFIG_SUN3 */ - -/* set ISA defs early as possible */ -#if defined(CONFIG_ISA) && defined(MULTI_ISA) - if (MACH_IS_Q40) { - isa_type = ISA_TYPE_Q40; - isa_sex = 0; - } -#ifdef CONFIG_AMIGA_PCMCIA - if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) { - isa_type = ISA_TYPE_AG; - isa_sex = 1; - } -#endif -#endif -} - -static int show_cpuinfo(struct seq_file *m, void *v) -{ - const char *cpu, *mmu, *fpu; - unsigned long clockfreq, clockfactor; - -#define LOOP_CYCLES_68020 (8) -#define LOOP_CYCLES_68030 (8) -#define LOOP_CYCLES_68040 (3) -#define LOOP_CYCLES_68060 (1) - - if (CPU_IS_020) { - cpu = "68020"; - clockfactor = LOOP_CYCLES_68020; - } else if (CPU_IS_030) { - cpu = "68030"; - clockfactor = LOOP_CYCLES_68030; - } else if (CPU_IS_040) { - cpu = "68040"; - clockfactor = LOOP_CYCLES_68040; - } else if (CPU_IS_060) { - cpu = "68060"; - clockfactor = LOOP_CYCLES_68060; - } else { - cpu = "680x0"; - clockfactor = 0; - } - -#ifdef CONFIG_M68KFPU_EMU_ONLY - fpu = "none(soft float)"; +#ifdef CONFIG_MMU +#include "setup_mm.c" #else - if (m68k_fputype & FPU_68881) - fpu = "68881"; - else if (m68k_fputype & FPU_68882) - fpu = "68882"; - else if (m68k_fputype & FPU_68040) - fpu = "68040"; - else if (m68k_fputype & FPU_68060) - fpu = "68060"; - else if (m68k_fputype & FPU_SUNFPA) - fpu = "Sun FPA"; - else - fpu = "none"; -#endif - - if (m68k_mmutype & MMU_68851) - mmu = "68851"; - else if (m68k_mmutype & MMU_68030) - mmu = "68030"; - else if (m68k_mmutype & MMU_68040) - mmu = "68040"; - else if (m68k_mmutype & MMU_68060) - mmu = "68060"; - else if (m68k_mmutype & MMU_SUN3) - mmu = "Sun-3"; - else if (m68k_mmutype & MMU_APOLLO) - mmu = "Apollo"; - else - mmu = "unknown"; - - clockfreq = loops_per_jiffy * HZ * clockfactor; - - seq_printf(m, "CPU:\t\t%s\n" - "MMU:\t\t%s\n" - "FPU:\t\t%s\n" - "Clocking:\t%lu.%1luMHz\n" - "BogoMips:\t%lu.%02lu\n" - "Calibration:\t%lu loops\n", - cpu, mmu, fpu, - clockfreq/1000000,(clockfreq/100000)%10, - loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100, - loops_per_jiffy); - return 0; -} - -static void *c_start(struct seq_file *m, loff_t *pos) -{ - return *pos < 1 ? (void *)1 : NULL; -} -static void *c_next(struct seq_file *m, void *v, loff_t *pos) -{ - ++*pos; - return NULL; -} -static void c_stop(struct seq_file *m, void *v) -{ -} -const struct seq_operations cpuinfo_op = { - .start = c_start, - .next = c_next, - .stop = c_stop, - .show = show_cpuinfo, -}; - -#ifdef CONFIG_PROC_HARDWARE -static int hardware_proc_show(struct seq_file *m, void *v) -{ - char model[80]; - unsigned long mem; - int i; - - if (mach_get_model) - mach_get_model(model); - else - strcpy(model, "Unknown m68k"); - - seq_printf(m, "Model:\t\t%s\n", model); - for (mem = 0, i = 0; i < m68k_num_memory; i++) - mem += m68k_memory[i].size; - seq_printf(m, "System Memory:\t%ldK\n", mem >> 10); - - if (mach_get_hardware_list) - mach_get_hardware_list(m); - - return 0; -} - -static int hardware_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, hardware_proc_show, NULL); -} - -static const struct file_operations hardware_proc_fops = { - .open = hardware_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int __init proc_hardware_init(void) -{ - proc_create("hardware", 0, NULL, &hardware_proc_fops); - return 0; -} -module_init(proc_hardware_init); +#include "setup_no.c" #endif - -void check_bugs(void) -{ -#ifndef CONFIG_M68KFPU_EMU - if (m68k_fputype == 0) { - printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, " - "WHICH IS REQUIRED BY LINUX/M68K ***\n"); - printk(KERN_EMERG "Upgrade your hardware or join the FPU " - "emulation project\n"); - panic("no FPU"); - } -#endif /* !CONFIG_M68KFPU_EMU */ -} - -#ifdef CONFIG_ADB -static int __init adb_probe_sync_enable (char *str) { - extern int __adb_probe_sync; - __adb_probe_sync = 1; - return 1; -} - -__setup("adb_sync", adb_probe_sync_enable); -#endif /* CONFIG_ADB */ diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c new file mode 100644 index 0000000..334d836 --- /dev/null +++ b/arch/m68k/kernel/setup_mm.c @@ -0,0 +1,533 @@ +/* + * linux/arch/m68k/kernel/setup.c + * + * Copyright (C) 1995 Hamish Macdonald + */ + +/* + * This file handles the architecture-dependent parts of system setup + */ + +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/fs.h> +#include <linux/console.h> +#include <linux/genhd.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/init.h> +#include <linux/bootmem.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/module.h> +#include <linux/initrd.h> + +#include <asm/bootinfo.h> +#include <asm/sections.h> +#include <asm/setup.h> +#include <asm/fpu.h> +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/machdep.h> +#ifdef CONFIG_AMIGA +#include <asm/amigahw.h> +#endif +#ifdef CONFIG_ATARI +#include <asm/atarihw.h> +#include <asm/atari_stram.h> +#endif +#ifdef CONFIG_SUN3X +#include <asm/dvma.h> +#endif +#include <asm/natfeat.h> + +#if !FPSTATESIZE || !NR_IRQS +#warning No CPU/platform type selected, your kernel will not work! +#warning Are you building an allnoconfig kernel? +#endif + +unsigned long m68k_machtype; +EXPORT_SYMBOL(m68k_machtype); +unsigned long m68k_cputype; +EXPORT_SYMBOL(m68k_cputype); +unsigned long m68k_fputype; +unsigned long m68k_mmutype; +EXPORT_SYMBOL(m68k_mmutype); +#ifdef CONFIG_VME +unsigned long vme_brdtype; +EXPORT_SYMBOL(vme_brdtype); +#endif + +int m68k_is040or060; +EXPORT_SYMBOL(m68k_is040or060); + +extern unsigned long availmem; + +int m68k_num_memory; +EXPORT_SYMBOL(m68k_num_memory); +int m68k_realnum_memory; +EXPORT_SYMBOL(m68k_realnum_memory); +unsigned long m68k_memoffset; +struct mem_info m68k_memory[NUM_MEMINFO]; +EXPORT_SYMBOL(m68k_memory); + +struct mem_info m68k_ramdisk; + +static char m68k_command_line[CL_SIZE]; + +void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL; +/* machine dependent irq functions */ +void (*mach_init_IRQ) (void) __initdata = NULL; +void (*mach_get_model) (char *model); +void (*mach_get_hardware_list) (struct seq_file *m); +/* machine dependent timer functions */ +unsigned long (*mach_gettimeoffset) (void); +int (*mach_hwclk) (int, struct rtc_time*); +EXPORT_SYMBOL(mach_hwclk); +int (*mach_set_clock_mmss) (unsigned long); +unsigned int (*mach_get_ss)(void); +int (*mach_get_rtc_pll)(struct rtc_pll_info *); +int (*mach_set_rtc_pll)(struct rtc_pll_info *); +EXPORT_SYMBOL(mach_get_ss); +EXPORT_SYMBOL(mach_get_rtc_pll); +EXPORT_SYMBOL(mach_set_rtc_pll); +void (*mach_reset)( void ); +void (*mach_halt)( void ); +void (*mach_power_off)( void ); +long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */ +#ifdef CONFIG_HEARTBEAT +void (*mach_heartbeat) (int); +EXPORT_SYMBOL(mach_heartbeat); +#endif +#ifdef CONFIG_M68K_L2_CACHE +void (*mach_l2_flush) (int); +#endif +#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE) +void (*mach_beep)(unsigned int, unsigned int); +EXPORT_SYMBOL(mach_beep); +#endif +#if defined(CONFIG_ISA) && defined(MULTI_ISA) +int isa_type; +int isa_sex; +EXPORT_SYMBOL(isa_type); +EXPORT_SYMBOL(isa_sex); +#endif + +extern int amiga_parse_bootinfo(const struct bi_record *); +extern int atari_parse_bootinfo(const struct bi_record *); +extern int mac_parse_bootinfo(const struct bi_record *); +extern int q40_parse_bootinfo(const struct bi_record *); +extern int bvme6000_parse_bootinfo(const struct bi_record *); +extern int mvme16x_parse_bootinfo(const struct bi_record *); +extern int mvme147_parse_bootinfo(const struct bi_record *); +extern int hp300_parse_bootinfo(const struct bi_record *); +extern int apollo_parse_bootinfo(const struct bi_record *); + +extern void config_amiga(void); +extern void config_atari(void); +extern void config_mac(void); +extern void config_sun3(void); +extern void config_apollo(void); +extern void config_mvme147(void); +extern void config_mvme16x(void); +extern void config_bvme6000(void); +extern void config_hp300(void); +extern void config_q40(void); +extern void config_sun3x(void); + +#define MASK_256K 0xfffc0000 + +extern void paging_init(void); + +static void __init m68k_parse_bootinfo(const struct bi_record *record) +{ + while (record->tag != BI_LAST) { + int unknown = 0; + const unsigned long *data = record->data; + + switch (record->tag) { + case BI_MACHTYPE: + case BI_CPUTYPE: + case BI_FPUTYPE: + case BI_MMUTYPE: + /* Already set up by head.S */ + break; + + case BI_MEMCHUNK: + if (m68k_num_memory < NUM_MEMINFO) { + m68k_memory[m68k_num_memory].addr = data[0]; + m68k_memory[m68k_num_memory].size = data[1]; + m68k_num_memory++; + } else + printk("m68k_parse_bootinfo: too many memory chunks\n"); + break; + + case BI_RAMDISK: + m68k_ramdisk.addr = data[0]; + m68k_ramdisk.size = data[1]; + break; + + case BI_COMMAND_LINE: + strlcpy(m68k_command_line, (const char *)data, + sizeof(m68k_command_line)); + break; + + default: + if (MACH_IS_AMIGA) + unknown = amiga_parse_bootinfo(record); + else if (MACH_IS_ATARI) + unknown = atari_parse_bootinfo(record); + else if (MACH_IS_MAC) + unknown = mac_parse_bootinfo(record); + else if (MACH_IS_Q40) + unknown = q40_parse_bootinfo(record); + else if (MACH_IS_BVME6000) + unknown = bvme6000_parse_bootinfo(record); + else if (MACH_IS_MVME16x) + unknown = mvme16x_parse_bootinfo(record); + else if (MACH_IS_MVME147) + unknown = mvme147_parse_bootinfo(record); + else if (MACH_IS_HP300) + unknown = hp300_parse_bootinfo(record); + else if (MACH_IS_APOLLO) + unknown = apollo_parse_bootinfo(record); + else + unknown = 1; + } + if (unknown) + printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n", + record->tag); + record = (struct bi_record *)((unsigned long)record + + record->size); + } + + m68k_realnum_memory = m68k_num_memory; +#ifdef CONFIG_SINGLE_MEMORY_CHUNK + if (m68k_num_memory > 1) { + printk("Ignoring last %i chunks of physical memory\n", + (m68k_num_memory - 1)); + m68k_num_memory = 1; + } +#endif +} + +void __init setup_arch(char **cmdline_p) +{ + int i; + + /* The bootinfo is located right after the kernel bss */ + m68k_parse_bootinfo((const struct bi_record *)_end); + + if (CPU_IS_040) + m68k_is040or060 = 4; + else if (CPU_IS_060) + m68k_is040or060 = 6; + + /* FIXME: m68k_fputype is passed in by Penguin booter, which can + * be confused by software FPU emulation. BEWARE. + * We should really do our own FPU check at startup. + * [what do we do with buggy 68LC040s? if we have problems + * with them, we should add a test to check_bugs() below] */ +#ifndef CONFIG_M68KFPU_EMU_ONLY + /* clear the fpu if we have one */ + if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) { + volatile int zero = 0; + asm volatile ("frestore %0" : : "m" (zero)); + } +#endif + + if (CPU_IS_060) { + u32 pcr; + + asm (".chip 68060; movec %%pcr,%0; .chip 68k" + : "=d" (pcr)); + if (((pcr >> 8) & 0xff) <= 5) { + printk("Enabling workaround for errata I14\n"); + asm (".chip 68060; movec %0,%%pcr; .chip 68k" + : : "d" (pcr | 0x20)); + } + } + + init_mm.start_code = PAGE_OFFSET; + init_mm.end_code = (unsigned long)_etext; + init_mm.end_data = (unsigned long)_edata; + init_mm.brk = (unsigned long)_end; + + *cmdline_p = m68k_command_line; + memcpy(boot_command_line, *cmdline_p, CL_SIZE); + + parse_early_param(); + +#ifdef CONFIG_DUMMY_CONSOLE + conswitchp = &dummy_con; +#endif + + switch (m68k_machtype) { +#ifdef CONFIG_AMIGA + case MACH_AMIGA: + config_amiga(); + break; +#endif +#ifdef CONFIG_ATARI + case MACH_ATARI: + config_atari(); + break; +#endif +#ifdef CONFIG_MAC + case MACH_MAC: + config_mac(); + break; +#endif +#ifdef CONFIG_SUN3 + case MACH_SUN3: + config_sun3(); + break; +#endif +#ifdef CONFIG_APOLLO + case MACH_APOLLO: + config_apollo(); + break; +#endif +#ifdef CONFIG_MVME147 + case MACH_MVME147: + config_mvme147(); + break; +#endif +#ifdef CONFIG_MVME16x + case MACH_MVME16x: + config_mvme16x(); + break; +#endif +#ifdef CONFIG_BVME6000 + case MACH_BVME6000: + config_bvme6000(); + break; +#endif +#ifdef CONFIG_HP300 + case MACH_HP300: + config_hp300(); + break; +#endif +#ifdef CONFIG_Q40 + case MACH_Q40: + config_q40(); + break; +#endif +#ifdef CONFIG_SUN3X + case MACH_SUN3X: + config_sun3x(); + break; +#endif + default: + panic("No configuration setup"); + } + +#ifdef CONFIG_NATFEAT + nf_init(); +#endif + + paging_init(); + +#ifndef CONFIG_SUN3 + for (i = 1; i < m68k_num_memory; i++) + free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr, + m68k_memory[i].size); +#ifdef CONFIG_BLK_DEV_INITRD + if (m68k_ramdisk.size) { + reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)), + m68k_ramdisk.addr, m68k_ramdisk.size, + BOOTMEM_DEFAULT); + initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr); + initrd_end = initrd_start + m68k_ramdisk.size; + printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end); + } +#endif + +#ifdef CONFIG_ATARI + if (MACH_IS_ATARI) + atari_stram_reserve_pages((void *)availmem); +#endif +#ifdef CONFIG_SUN3X + if (MACH_IS_SUN3X) { + dvma_init(); + } +#endif + +#endif /* !CONFIG_SUN3 */ + +/* set ISA defs early as possible */ +#if defined(CONFIG_ISA) && defined(MULTI_ISA) + if (MACH_IS_Q40) { + isa_type = ISA_TYPE_Q40; + isa_sex = 0; + } +#ifdef CONFIG_AMIGA_PCMCIA + if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) { + isa_type = ISA_TYPE_AG; + isa_sex = 1; + } +#endif +#endif +} + +static int show_cpuinfo(struct seq_file *m, void *v) +{ + const char *cpu, *mmu, *fpu; + unsigned long clockfreq, clockfactor; + +#define LOOP_CYCLES_68020 (8) +#define LOOP_CYCLES_68030 (8) +#define LOOP_CYCLES_68040 (3) +#define LOOP_CYCLES_68060 (1) + + if (CPU_IS_020) { + cpu = "68020"; + clockfactor = LOOP_CYCLES_68020; + } else if (CPU_IS_030) { + cpu = "68030"; + clockfactor = LOOP_CYCLES_68030; + } else if (CPU_IS_040) { + cpu = "68040"; + clockfactor = LOOP_CYCLES_68040; + } else if (CPU_IS_060) { + cpu = "68060"; + clockfactor = LOOP_CYCLES_68060; + } else { + cpu = "680x0"; + clockfactor = 0; + } + +#ifdef CONFIG_M68KFPU_EMU_ONLY + fpu = "none(soft float)"; +#else + if (m68k_fputype & FPU_68881) + fpu = "68881"; + else if (m68k_fputype & FPU_68882) + fpu = "68882"; + else if (m68k_fputype & FPU_68040) + fpu = "68040"; + else if (m68k_fputype & FPU_68060) + fpu = "68060"; + else if (m68k_fputype & FPU_SUNFPA) + fpu = "Sun FPA"; + else + fpu = "none"; +#endif + + if (m68k_mmutype & MMU_68851) + mmu = "68851"; + else if (m68k_mmutype & MMU_68030) + mmu = "68030"; + else if (m68k_mmutype & MMU_68040) + mmu = "68040"; + else if (m68k_mmutype & MMU_68060) + mmu = "68060"; + else if (m68k_mmutype & MMU_SUN3) + mmu = "Sun-3"; + else if (m68k_mmutype & MMU_APOLLO) + mmu = "Apollo"; + else + mmu = "unknown"; + + clockfreq = loops_per_jiffy * HZ * clockfactor; + + seq_printf(m, "CPU:\t\t%s\n" + "MMU:\t\t%s\n" + "FPU:\t\t%s\n" + "Clocking:\t%lu.%1luMHz\n" + "BogoMips:\t%lu.%02lu\n" + "Calibration:\t%lu loops\n", + cpu, mmu, fpu, + clockfreq/1000000,(clockfreq/100000)%10, + loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100, + loops_per_jiffy); + return 0; +} + +static void *c_start(struct seq_file *m, loff_t *pos) +{ + return *pos < 1 ? (void *)1 : NULL; +} +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return NULL; +} +static void c_stop(struct seq_file *m, void *v) +{ +} +const struct seq_operations cpuinfo_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, +}; + +#ifdef CONFIG_PROC_HARDWARE +static int hardware_proc_show(struct seq_file *m, void *v) +{ + char model[80]; + unsigned long mem; + int i; + + if (mach_get_model) + mach_get_model(model); + else + strcpy(model, "Unknown m68k"); + + seq_printf(m, "Model:\t\t%s\n", model); + for (mem = 0, i = 0; i < m68k_num_memory; i++) + mem += m68k_memory[i].size; + seq_printf(m, "System Memory:\t%ldK\n", mem >> 10); + + if (mach_get_hardware_list) + mach_get_hardware_list(m); + + return 0; +} + +static int hardware_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, hardware_proc_show, NULL); +} + +static const struct file_operations hardware_proc_fops = { + .open = hardware_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init proc_hardware_init(void) +{ + proc_create("hardware", 0, NULL, &hardware_proc_fops); + return 0; +} +module_init(proc_hardware_init); +#endif + +void check_bugs(void) +{ +#ifndef CONFIG_M68KFPU_EMU + if (m68k_fputype == 0) { + printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, " + "WHICH IS REQUIRED BY LINUX/M68K ***\n"); + printk(KERN_EMERG "Upgrade your hardware or join the FPU " + "emulation project\n"); + panic("no FPU"); + } +#endif /* !CONFIG_M68KFPU_EMU */ +} + +#ifdef CONFIG_ADB +static int __init adb_probe_sync_enable (char *str) { + extern int __adb_probe_sync; + __adb_probe_sync = 1; + return 1; +} + +__setup("adb_sync", adb_probe_sync_enable); +#endif /* CONFIG_ADB */ diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c new file mode 100644 index 0000000..16b2de7 --- /dev/null +++ b/arch/m68k/kernel/setup_no.c @@ -0,0 +1,317 @@ +/* + * linux/arch/m68knommu/kernel/setup.c + * + * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org> + * Copyleft ()) 2000 James D. Schettine {james@telos-systems.com} + * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com> + * Copyright (C) 1995 Hamish Macdonald + * Copyright (C) 2000 Lineo Inc. (www.lineo.com) + * Copyright (C) 2001 Lineo, Inc. <www.lineo.com> + * + * 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca> + */ + +/* + * This file handles the architecture-dependent parts of system setup + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/fb.h> +#include <linux/module.h> +#include <linux/mm.h> +#include <linux/console.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/bootmem.h> +#include <linux/seq_file.h> +#include <linux/init.h> +#include <linux/initrd.h> +#include <linux/root_dev.h> + +#include <asm/setup.h> +#include <asm/irq.h> +#include <asm/machdep.h> +#include <asm/pgtable.h> + +unsigned long memory_start; +unsigned long memory_end; + +EXPORT_SYMBOL(memory_start); +EXPORT_SYMBOL(memory_end); + +char __initdata command_line[COMMAND_LINE_SIZE]; + +/* machine dependent timer functions */ +void (*mach_gettod)(int*, int*, int*, int*, int*, int*); +int (*mach_set_clock_mmss)(unsigned long); + +/* machine dependent reboot functions */ +void (*mach_reset)(void); +void (*mach_halt)(void); +void (*mach_power_off)(void); + +#ifdef CONFIG_M68328 +#define CPU_NAME "MC68328" +#endif +#ifdef CONFIG_M68EZ328 +#define CPU_NAME "MC68EZ328" +#endif +#ifdef CONFIG_M68VZ328 +#define CPU_NAME "MC68VZ328" +#endif +#ifdef CONFIG_M68360 +#define CPU_NAME "MC68360" +#endif +#ifndef CPU_NAME +#define CPU_NAME "UNKNOWN" +#endif + +/* + * Different cores have different instruction execution timings. + * The old/traditional 68000 cores are basically all the same, at 16. + * The ColdFire cores vary a little, their values are defined in their + * headers. We default to the standard 68000 value here. + */ +#ifndef CPU_INSTR_PER_JIFFY +#define CPU_INSTR_PER_JIFFY 16 +#endif + +extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end; +extern int _ramstart, _ramend; + +#if defined(CONFIG_UBOOT) +/* + * parse_uboot_commandline + * + * Copies u-boot commandline arguments and store them in the proper linux + * variables. + * + * Assumes: + * _init_sp global contains the address in the stack pointer when the + * kernel starts (see head.S::_start) + * + * U-Boot calling convention: + * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); + * + * _init_sp can be parsed as such + * + * _init_sp+00 = u-boot cmd after jsr into kernel (skip) + * _init_sp+04 = &kernel board_info (residual data) + * _init_sp+08 = &initrd_start + * _init_sp+12 = &initrd_end + * _init_sp+16 = &cmd_start + * _init_sp+20 = &cmd_end + * + * This also assumes that the memory locations pointed to are still + * unmodified. U-boot places them near the end of external SDRAM. + * + * Argument(s): + * commandp = the linux commandline arg container to fill. + * size = the sizeof commandp. + * + * Returns: + */ +void parse_uboot_commandline(char *commandp, int size) +{ + extern unsigned long _init_sp; + unsigned long *sp; + unsigned long uboot_kbd; + unsigned long uboot_initrd_start, uboot_initrd_end; + unsigned long uboot_cmd_start, uboot_cmd_end; + + + sp = (unsigned long *)_init_sp; + uboot_kbd = sp[1]; + uboot_initrd_start = sp[2]; + uboot_initrd_end = sp[3]; + uboot_cmd_start = sp[4]; + uboot_cmd_end = sp[5]; + + if (uboot_cmd_start && uboot_cmd_end) + strncpy(commandp, (const char *)uboot_cmd_start, size); +#if defined(CONFIG_BLK_DEV_INITRD) + if (uboot_initrd_start && uboot_initrd_end && + (uboot_initrd_end > uboot_initrd_start)) { + initrd_start = uboot_initrd_start; + initrd_end = uboot_initrd_end; + ROOT_DEV = Root_RAM0; + printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", + initrd_start, initrd_end); + } +#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ +} +#endif /* #if defined(CONFIG_UBOOT) */ + +void __init setup_arch(char **cmdline_p) +{ + int bootmap_size; + + memory_start = PAGE_ALIGN(_ramstart); + memory_end = _ramend; + + init_mm.start_code = (unsigned long) &_stext; + init_mm.end_code = (unsigned long) &_etext; + init_mm.end_data = (unsigned long) &_edata; + init_mm.brk = (unsigned long) 0; + + config_BSP(&command_line[0], sizeof(command_line)); + +#if defined(CONFIG_BOOTPARAM) + strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); + command_line[sizeof(command_line) - 1] = 0; +#endif /* CONFIG_BOOTPARAM */ + +#if defined(CONFIG_UBOOT) + /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */ + #if defined(CONFIG_BOOTPARAM) + /* Add the whitespace separator */ + command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' '; + /* Parse uboot command line into the rest of the buffer */ + parse_uboot_commandline( + &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)], + (sizeof(command_line) - + (strlen(CONFIG_BOOTPARAM_STRING)+1))); + /* Only CONFIG_UBOOT defined, create cmdline */ + #else + parse_uboot_commandline(&command_line[0], sizeof(command_line)); + #endif /* CONFIG_BOOTPARAM */ + command_line[sizeof(command_line) - 1] = 0; +#endif /* CONFIG_UBOOT */ + + printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n"); + +#ifdef CONFIG_UCDIMM + printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n"); +#endif +#ifdef CONFIG_M68VZ328 + printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); +#endif +#ifdef CONFIG_COLDFIRE + printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); +#ifdef CONFIG_M5307 + printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); +#endif +#ifdef CONFIG_ELITE + printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); +#endif +#endif + printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); + +#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ) + printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n"); +#endif +#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 ) + printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n"); +#endif +#if defined (CONFIG_M68360) + printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n"); + printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n"); +#endif +#ifdef CONFIG_DRAGEN2 + printk(KERN_INFO "DragonEngine II board support by Georges Menie\n"); +#endif +#ifdef CONFIG_M5235EVB + printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); +#endif + + pr_debug("KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x " + "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext, + (int) &_sdata, (int) &_edata, + (int) &_sbss, (int) &_ebss); + pr_debug("MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ", + (int) &_ebss, (int) memory_start, + (int) memory_start, (int) memory_end); + + /* Keep a copy of command line */ + *cmdline_p = &command_line[0]; + memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); + boot_command_line[COMMAND_LINE_SIZE-1] = 0; + +#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE) + conswitchp = &dummy_con; +#endif + + /* + * Give all the memory to the bootmap allocator, tell it to put the + * boot mem_map at the start of memory. + */ + bootmap_size = init_bootmem_node( + NODE_DATA(0), + memory_start >> PAGE_SHIFT, /* map goes here */ + PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */ + memory_end >> PAGE_SHIFT); + /* + * Free the usable memory, we have to make sure we do not free + * the bootmem bitmap so we then reserve it after freeing it :-) + */ + free_bootmem(memory_start, memory_end - memory_start); + reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT); + +#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) + if ((initrd_start > 0) && (initrd_start < initrd_end) && + (initrd_end < memory_end)) + reserve_bootmem(initrd_start, initrd_end - initrd_start, + BOOTMEM_DEFAULT); +#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ + + /* + * Get kmalloc into gear. + */ + paging_init(); +} + +/* + * Get CPU information for use by the procfs. + */ +static int show_cpuinfo(struct seq_file *m, void *v) +{ + char *cpu, *mmu, *fpu; + u_long clockfreq; + + cpu = CPU_NAME; + mmu = "none"; + fpu = "none"; + clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY; + + seq_printf(m, "CPU:\t\t%s\n" + "MMU:\t\t%s\n" + "FPU:\t\t%s\n" + "Clocking:\t%lu.%1luMHz\n" + "BogoMips:\t%lu.%02lu\n" + "Calibration:\t%lu loops\n", + cpu, mmu, fpu, + clockfreq / 1000000, + (clockfreq / 100000) % 10, + (loops_per_jiffy * HZ) / 500000, + ((loops_per_jiffy * HZ) / 5000) % 100, + (loops_per_jiffy * HZ)); + + return 0; +} + +static void *c_start(struct seq_file *m, loff_t *pos) +{ + return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL; +} + +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return c_start(m, pos); +} + +static void c_stop(struct seq_file *m, void *v) +{ +} + +const struct seq_operations cpuinfo_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, +}; + diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c index a0afc23..2e25713 100644 --- a/arch/m68k/kernel/signal.c +++ b/arch/m68k/kernel/signal.c @@ -1,1017 +1,5 @@ -/* - * linux/arch/m68k/kernel/signal.c - * - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -/* - * Linux/m68k support by Hamish Macdonald - * - * 68060 fixes by Jesper Skov - * - * 1997-12-01 Modified for POSIX.1b signals by Andreas Schwab - * - * mathemu support by Roman Zippel - * (Note: fpstate in the signal context is completely ignored for the emulator - * and the internal floating point format is put on stack) - */ - -/* - * ++roman (07/09/96): implemented signal stacks (specially for tosemu on - * Atari :-) Current limitation: Only one sigstack can be active at one time. - * If a second signal with SA_ONSTACK set arrives while working on a sigstack, - * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested - * signal handlers! - */ - -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/syscalls.h> -#include <linux/errno.h> -#include <linux/wait.h> -#include <linux/ptrace.h> -#include <linux/unistd.h> -#include <linux/stddef.h> -#include <linux/highuid.h> -#include <linux/personality.h> -#include <linux/tty.h> -#include <linux/binfmts.h> -#include <linux/module.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/pgtable.h> -#include <asm/traps.h> -#include <asm/ucontext.h> - -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - -static const int frame_extra_sizes[16] = { - [1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */ - [2] = sizeof(((struct frame *)0)->un.fmt2), - [3] = sizeof(((struct frame *)0)->un.fmt3), - [4] = sizeof(((struct frame *)0)->un.fmt4), - [5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */ - [6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */ - [7] = sizeof(((struct frame *)0)->un.fmt7), - [8] = -1, /* sizeof(((struct frame *)0)->un.fmt8), */ - [9] = sizeof(((struct frame *)0)->un.fmt9), - [10] = sizeof(((struct frame *)0)->un.fmta), - [11] = sizeof(((struct frame *)0)->un.fmtb), - [12] = -1, /* sizeof(((struct frame *)0)->un.fmtc), */ - [13] = -1, /* sizeof(((struct frame *)0)->un.fmtd), */ - [14] = -1, /* sizeof(((struct frame *)0)->un.fmte), */ - [15] = -1, /* sizeof(((struct frame *)0)->un.fmtf), */ -}; - -int handle_kernel_fault(struct pt_regs *regs) -{ - const struct exception_table_entry *fixup; - struct pt_regs *tregs; - - /* Are we prepared to handle this kernel fault? */ - fixup = search_exception_tables(regs->pc); - if (!fixup) - return 0; - - /* Create a new four word stack frame, discarding the old one. */ - regs->stkadj = frame_extra_sizes[regs->format]; - tregs = (struct pt_regs *)((long)regs + regs->stkadj); - tregs->vector = regs->vector; - tregs->format = 0; - tregs->pc = fixup->fixup; - tregs->sr = regs->sr; - - return 1; -} - -/* - * Atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int -sys_sigsuspend(int unused0, int unused1, old_sigset_t mask) -{ - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_restore_sigmask(); - - return -ERESTARTNOHAND; -} - -asmlinkage int -sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - -asmlinkage int -sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) -{ - return do_sigaltstack(uss, uoss, rdusp()); -} - - -/* - * Do a signal return; undo the signal stack. - * - * Keep the return code on the stack quadword aligned! - * That makes the cache flush below easier. - */ - -struct sigframe -{ - char __user *pretcode; - int sig; - int code; - struct sigcontext __user *psc; - char retcode[8]; - unsigned long extramask[_NSIG_WORDS-1]; - struct sigcontext sc; -}; - -struct rt_sigframe -{ - char __user *pretcode; - int sig; - struct siginfo __user *pinfo; - void __user *puc; - char retcode[8]; - struct siginfo info; - struct ucontext uc; -}; - - -static unsigned char fpu_version; /* version number of fpu, set by setup_frame */ - -static inline int restore_fpu_state(struct sigcontext *sc) -{ - int err = 1; - - if (FPU_IS_EMU) { - /* restore registers */ - memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12); - memcpy(current->thread.fp, sc->sc_fpregs, 24); - return 0; - } - - if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { - /* Verify the frame format. */ - if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version)) - goto out; - if (CPU_IS_020_OR_030) { - if (m68k_fputype & FPU_68881 && - !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4)) - goto out; - if (m68k_fputype & FPU_68882 && - !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4)) - goto out; - } else if (CPU_IS_040) { - if (!(sc->sc_fpstate[1] == 0x00 || - sc->sc_fpstate[1] == 0x28 || - sc->sc_fpstate[1] == 0x60)) - goto out; - } else if (CPU_IS_060) { - if (!(sc->sc_fpstate[3] == 0x00 || - sc->sc_fpstate[3] == 0x60 || - sc->sc_fpstate[3] == 0xe0)) - goto out; - } else - goto out; - - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %0,%%fp0-%%fp1\n\t" - "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" - ".chip 68k" - : /* no outputs */ - : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl)); - } - __asm__ volatile (".chip 68k/68881\n\t" - "frestore %0\n\t" - ".chip 68k" : : "m" (*sc->sc_fpstate)); - err = 0; - -out: - return err; -} - -#define FPCONTEXT_SIZE 216 -#define uc_fpstate uc_filler[0] -#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4] -#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1] - -static inline int rt_restore_fpu_state(struct ucontext __user *uc) -{ - unsigned char fpstate[FPCONTEXT_SIZE]; - int context_size = CPU_IS_060 ? 8 : 0; - fpregset_t fpregs; - int err = 1; - - if (FPU_IS_EMU) { - /* restore fpu control register */ - if (__copy_from_user(current->thread.fpcntl, - uc->uc_mcontext.fpregs.f_fpcntl, 12)) - goto out; - /* restore all other fpu register */ - if (__copy_from_user(current->thread.fp, - uc->uc_mcontext.fpregs.f_fpregs, 96)) - goto out; - return 0; - } - - if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate)) - goto out; - if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { - if (!CPU_IS_060) - context_size = fpstate[1]; - /* Verify the frame format. */ - if (!CPU_IS_060 && (fpstate[0] != fpu_version)) - goto out; - if (CPU_IS_020_OR_030) { - if (m68k_fputype & FPU_68881 && - !(context_size == 0x18 || context_size == 0xb4)) - goto out; - if (m68k_fputype & FPU_68882 && - !(context_size == 0x38 || context_size == 0xd4)) - goto out; - } else if (CPU_IS_040) { - if (!(context_size == 0x00 || - context_size == 0x28 || - context_size == 0x60)) - goto out; - } else if (CPU_IS_060) { - if (!(fpstate[3] == 0x00 || - fpstate[3] == 0x60 || - fpstate[3] == 0xe0)) - goto out; - } else - goto out; - if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs, - sizeof(fpregs))) - goto out; - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %0,%%fp0-%%fp7\n\t" - "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" - ".chip 68k" - : /* no outputs */ - : "m" (*fpregs.f_fpregs), - "m" (*fpregs.f_fpcntl)); - } - if (context_size && - __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1, - context_size)) - goto out; - __asm__ volatile (".chip 68k/68881\n\t" - "frestore %0\n\t" - ".chip 68k" : : "m" (*fpstate)); - err = 0; - -out: - return err; -} - -static int mangle_kernel_stack(struct pt_regs *regs, int formatvec, - void __user *fp) -{ - int fsize = frame_extra_sizes[formatvec >> 12]; - if (fsize < 0) { - /* - * user process trying to return with weird frame format - */ -#ifdef DEBUG - printk("user process returning with weird frame format\n"); -#endif - return 1; - } - if (!fsize) { - regs->format = formatvec >> 12; - regs->vector = formatvec & 0xfff; - } else { - struct switch_stack *sw = (struct switch_stack *)regs - 1; - unsigned long buf[fsize / 2]; /* yes, twice as much */ - - /* that'll make sure that expansion won't crap over data */ - if (copy_from_user(buf + fsize / 4, fp, fsize)) - return 1; - - /* point of no return */ - regs->format = formatvec >> 12; - regs->vector = formatvec & 0xfff; -#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack)) - __asm__ __volatile__ - (" movel %0,%/a0\n\t" - " subl %1,%/a0\n\t" /* make room on stack */ - " movel %/a0,%/sp\n\t" /* set stack pointer */ - /* move switch_stack and pt_regs */ - "1: movel %0@+,%/a0@+\n\t" - " dbra %2,1b\n\t" - " lea %/sp@(%c3),%/a0\n\t" /* add offset of fmt */ - " lsrl #2,%1\n\t" - " subql #1,%1\n\t" - /* copy to the gap we'd made */ - "2: movel %4@+,%/a0@+\n\t" - " dbra %1,2b\n\t" - " bral ret_from_signal\n" - : /* no outputs, it doesn't ever return */ - : "a" (sw), "d" (fsize), "d" (frame_offset/4-1), - "n" (frame_offset), "a" (buf + fsize/4) - : "a0"); -#undef frame_offset - } - return 0; -} - -static inline int -restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp) -{ - int formatvec; - struct sigcontext context; - int err; - - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - - /* get previous context */ - if (copy_from_user(&context, usc, sizeof(context))) - goto badframe; - - /* restore passed registers */ - regs->d0 = context.sc_d0; - regs->d1 = context.sc_d1; - regs->a0 = context.sc_a0; - regs->a1 = context.sc_a1; - regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff); - regs->pc = context.sc_pc; - regs->orig_d0 = -1; /* disable syscall checks */ - wrusp(context.sc_usp); - formatvec = context.sc_formatvec; - - err = restore_fpu_state(&context); - - if (err || mangle_kernel_stack(regs, formatvec, fp)) - goto badframe; - - return 0; - -badframe: - return 1; -} - -static inline int -rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw, - struct ucontext __user *uc) -{ - int temp; - greg_t __user *gregs = uc->uc_mcontext.gregs; - unsigned long usp; - int err; - - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - - err = __get_user(temp, &uc->uc_mcontext.version); - if (temp != MCONTEXT_VERSION) - goto badframe; - /* restore passed registers */ - err |= __get_user(regs->d0, &gregs[0]); - err |= __get_user(regs->d1, &gregs[1]); - err |= __get_user(regs->d2, &gregs[2]); - err |= __get_user(regs->d3, &gregs[3]); - err |= __get_user(regs->d4, &gregs[4]); - err |= __get_user(regs->d5, &gregs[5]); - err |= __get_user(sw->d6, &gregs[6]); - err |= __get_user(sw->d7, &gregs[7]); - err |= __get_user(regs->a0, &gregs[8]); - err |= __get_user(regs->a1, &gregs[9]); - err |= __get_user(regs->a2, &gregs[10]); - err |= __get_user(sw->a3, &gregs[11]); - err |= __get_user(sw->a4, &gregs[12]); - err |= __get_user(sw->a5, &gregs[13]); - err |= __get_user(sw->a6, &gregs[14]); - err |= __get_user(usp, &gregs[15]); - wrusp(usp); - err |= __get_user(regs->pc, &gregs[16]); - err |= __get_user(temp, &gregs[17]); - regs->sr = (regs->sr & 0xff00) | (temp & 0xff); - regs->orig_d0 = -1; /* disable syscall checks */ - err |= __get_user(temp, &uc->uc_formatvec); - - err |= rt_restore_fpu_state(uc); - - if (err || do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT) - goto badframe; - - if (mangle_kernel_stack(regs, temp, &uc->uc_extra)) - goto badframe; - - return 0; - -badframe: - return 1; -} - -asmlinkage int do_sigreturn(unsigned long __unused) -{ - struct switch_stack *sw = (struct switch_stack *) &__unused; - struct pt_regs *regs = (struct pt_regs *) (sw + 1); - unsigned long usp = rdusp(); - struct sigframe __user *frame = (struct sigframe __user *)(usp - 4); - sigset_t set; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__get_user(set.sig[0], &frame->sc.sc_mask) || - (_NSIG_WORDS > 1 && - __copy_from_user(&set.sig[1], &frame->extramask, - sizeof(frame->extramask)))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - current->blocked = set; - recalc_sigpending(); - - if (restore_sigcontext(regs, &frame->sc, frame + 1)) - goto badframe; - return regs->d0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -asmlinkage int do_rt_sigreturn(unsigned long __unused) -{ - struct switch_stack *sw = (struct switch_stack *) &__unused; - struct pt_regs *regs = (struct pt_regs *) (sw + 1); - unsigned long usp = rdusp(); - struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4); - sigset_t set; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - current->blocked = set; - recalc_sigpending(); - - if (rt_restore_ucontext(regs, sw, &frame->uc)) - goto badframe; - return regs->d0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -/* - * Set up a signal frame. - */ - -static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) -{ - if (FPU_IS_EMU) { - /* save registers */ - memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12); - memcpy(sc->sc_fpregs, current->thread.fp, 24); - return; - } - - __asm__ volatile (".chip 68k/68881\n\t" - "fsave %0\n\t" - ".chip 68k" - : : "m" (*sc->sc_fpstate) : "memory"); - - if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { - fpu_version = sc->sc_fpstate[0]; - if (CPU_IS_020_OR_030 && - regs->vector >= (VEC_FPBRUC * 4) && - regs->vector <= (VEC_FPNAN * 4)) { - /* Clear pending exception in 68882 idle frame */ - if (*(unsigned short *) sc->sc_fpstate == 0x1f38) - sc->sc_fpstate[0x38] |= 1 << 3; - } - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %%fp0-%%fp1,%0\n\t" - "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" - ".chip 68k" - : "=m" (*sc->sc_fpregs), - "=m" (*sc->sc_fpcntl) - : /* no inputs */ - : "memory"); - } -} - -static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) -{ - unsigned char fpstate[FPCONTEXT_SIZE]; - int context_size = CPU_IS_060 ? 8 : 0; - int err = 0; - - if (FPU_IS_EMU) { - /* save fpu control register */ - err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl, - current->thread.fpcntl, 12); - /* save all other fpu register */ - err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs, - current->thread.fp, 96); - return err; - } - - __asm__ volatile (".chip 68k/68881\n\t" - "fsave %0\n\t" - ".chip 68k" - : : "m" (*fpstate) : "memory"); - - err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate); - if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { - fpregset_t fpregs; - if (!CPU_IS_060) - context_size = fpstate[1]; - fpu_version = fpstate[0]; - if (CPU_IS_020_OR_030 && - regs->vector >= (VEC_FPBRUC * 4) && - regs->vector <= (VEC_FPNAN * 4)) { - /* Clear pending exception in 68882 idle frame */ - if (*(unsigned short *) fpstate == 0x1f38) - fpstate[0x38] |= 1 << 3; - } - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %%fp0-%%fp7,%0\n\t" - "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" - ".chip 68k" - : "=m" (*fpregs.f_fpregs), - "=m" (*fpregs.f_fpcntl) - : /* no inputs */ - : "memory"); - err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs, - sizeof(fpregs)); - } - if (context_size) - err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4, - context_size); - return err; -} - -static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, - unsigned long mask) -{ - sc->sc_mask = mask; - sc->sc_usp = rdusp(); - sc->sc_d0 = regs->d0; - sc->sc_d1 = regs->d1; - sc->sc_a0 = regs->a0; - sc->sc_a1 = regs->a1; - sc->sc_sr = regs->sr; - sc->sc_pc = regs->pc; - sc->sc_formatvec = regs->format << 12 | regs->vector; - save_fpu_state(sc, regs); -} - -static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs) -{ - struct switch_stack *sw = (struct switch_stack *)regs - 1; - greg_t __user *gregs = uc->uc_mcontext.gregs; - int err = 0; - - err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version); - err |= __put_user(regs->d0, &gregs[0]); - err |= __put_user(regs->d1, &gregs[1]); - err |= __put_user(regs->d2, &gregs[2]); - err |= __put_user(regs->d3, &gregs[3]); - err |= __put_user(regs->d4, &gregs[4]); - err |= __put_user(regs->d5, &gregs[5]); - err |= __put_user(sw->d6, &gregs[6]); - err |= __put_user(sw->d7, &gregs[7]); - err |= __put_user(regs->a0, &gregs[8]); - err |= __put_user(regs->a1, &gregs[9]); - err |= __put_user(regs->a2, &gregs[10]); - err |= __put_user(sw->a3, &gregs[11]); - err |= __put_user(sw->a4, &gregs[12]); - err |= __put_user(sw->a5, &gregs[13]); - err |= __put_user(sw->a6, &gregs[14]); - err |= __put_user(rdusp(), &gregs[15]); - err |= __put_user(regs->pc, &gregs[16]); - err |= __put_user(regs->sr, &gregs[17]); - err |= __put_user((regs->format << 12) | regs->vector, &uc->uc_formatvec); - err |= rt_save_fpu_state(uc, regs); - return err; -} - -static inline void push_cache (unsigned long vaddr) -{ - /* - * Using the old cache_push_v() was really a big waste. - * - * What we are trying to do is to flush 8 bytes to ram. - * Flushing 2 cache lines of 16 bytes is much cheaper than - * flushing 1 or 2 pages, as previously done in - * cache_push_v(). - * Jes - */ - if (CPU_IS_040) { - unsigned long temp; - - __asm__ __volatile__ (".chip 68040\n\t" - "nop\n\t" - "ptestr (%1)\n\t" - "movec %%mmusr,%0\n\t" - ".chip 68k" - : "=r" (temp) - : "a" (vaddr)); - - temp &= PAGE_MASK; - temp |= vaddr & ~PAGE_MASK; - - __asm__ __volatile__ (".chip 68040\n\t" - "nop\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (temp)); - } - else if (CPU_IS_060) { - unsigned long temp; - __asm__ __volatile__ (".chip 68060\n\t" - "plpar (%0)\n\t" - ".chip 68k" - : "=a" (temp) - : "0" (vaddr)); - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (temp)); - } - else { - /* - * 68030/68020 have no writeback cache; - * still need to clear icache. - * Note that vaddr is guaranteed to be long word aligned. - */ - unsigned long temp; - asm volatile ("movec %%cacr,%0" : "=r" (temp)); - temp += 4; - asm volatile ("movec %0,%%caar\n\t" - "movec %1,%%cacr" - : : "r" (vaddr), "r" (temp)); - asm volatile ("movec %0,%%caar\n\t" - "movec %1,%%cacr" - : : "r" (vaddr + 4), "r" (temp)); - } -} - -static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) -{ - unsigned long usp; - - /* Default to using normal stack. */ - usp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (!sas_ss_flags(usp)) - usp = current->sas_ss_sp + current->sas_ss_size; - } - return (void __user *)((usp - frame_size) & -8UL); -} - -static int setup_frame (int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) -{ - struct sigframe __user *frame; - int fsize = frame_extra_sizes[regs->format]; - struct sigcontext context; - int err = 0; - - if (fsize < 0) { -#ifdef DEBUG - printk ("setup_frame: Unknown frame format %#x\n", - regs->format); -#endif - goto give_sigsegv; - } - - frame = get_sigframe(ka, regs, sizeof(*frame) + fsize); - - if (fsize) - err |= copy_to_user (frame + 1, regs + 1, fsize); - - err |= __put_user((current_thread_info()->exec_domain - && current_thread_info()->exec_domain->signal_invmap - && sig < 32 - ? current_thread_info()->exec_domain->signal_invmap[sig] - : sig), - &frame->sig); - - err |= __put_user(regs->vector, &frame->code); - err |= __put_user(&frame->sc, &frame->psc); - - if (_NSIG_WORDS > 1) - err |= copy_to_user(frame->extramask, &set->sig[1], - sizeof(frame->extramask)); - - setup_sigcontext(&context, regs, set->sig[0]); - err |= copy_to_user (&frame->sc, &context, sizeof(context)); - - /* Set up to return from userspace. */ - err |= __put_user(frame->retcode, &frame->pretcode); - /* moveq #,d0; trap #0 */ - err |= __put_user(0x70004e40 + (__NR_sigreturn << 16), - (long __user *)(frame->retcode)); - - if (err) - goto give_sigsegv; - - push_cache ((unsigned long) &frame->retcode); - - /* - * Set up registers for signal handler. All the state we are about - * to destroy is successfully copied to sigframe. - */ - wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; - - /* - * This is subtle; if we build more than one sigframe, all but the - * first one will see frame format 0 and have fsize == 0, so we won't - * screw stkadj. - */ - if (fsize) - regs->stkadj = fsize; - - /* Prepare to skip over the extra stuff in the exception frame. */ - if (regs->stkadj) { - struct pt_regs *tregs = - (struct pt_regs *)((ulong)regs + regs->stkadj); -#ifdef DEBUG - printk("Performing stackadjust=%04x\n", regs->stkadj); -#endif - /* This must be copied with decreasing addresses to - handle overlaps. */ - tregs->vector = 0; - tregs->format = 0; - tregs->pc = regs->pc; - tregs->sr = regs->sr; - } - return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return err; -} - -static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) -{ - struct rt_sigframe __user *frame; - int fsize = frame_extra_sizes[regs->format]; - int err = 0; - - if (fsize < 0) { -#ifdef DEBUG - printk ("setup_frame: Unknown frame format %#x\n", - regs->format); -#endif - goto give_sigsegv; - } - - frame = get_sigframe(ka, regs, sizeof(*frame)); - - if (fsize) - err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize); - - err |= __put_user((current_thread_info()->exec_domain - && current_thread_info()->exec_domain->signal_invmap - && sig < 32 - ? current_thread_info()->exec_domain->signal_invmap[sig] - : sig), - &frame->sig); - err |= __put_user(&frame->info, &frame->pinfo); - err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); - - /* Create the ucontext. */ - err |= __put_user(0, &frame->uc.uc_flags); - err |= __put_user(NULL, &frame->uc.uc_link); - err |= __put_user((void __user *)current->sas_ss_sp, - &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(rdusp()), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); - err |= rt_setup_ucontext(&frame->uc, regs); - err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); - - /* Set up to return from userspace. */ - err |= __put_user(frame->retcode, &frame->pretcode); -#ifdef __mcoldfire__ - /* movel #__NR_rt_sigreturn,d0; trap #0 */ - err |= __put_user(0x203c0000, (long __user *)(frame->retcode + 0)); - err |= __put_user(0x00004e40 + (__NR_rt_sigreturn << 16), - (long __user *)(frame->retcode + 4)); +#ifdef CONFIG_MMU +#include "signal_mm.c" #else - /* moveq #,d0; notb d0; trap #0 */ - err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16), - (long __user *)(frame->retcode + 0)); - err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4)); -#endif - - if (err) - goto give_sigsegv; - - push_cache ((unsigned long) &frame->retcode); - - /* - * Set up registers for signal handler. All the state we are about - * to destroy is successfully copied to sigframe. - */ - wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; - - /* - * This is subtle; if we build more than one sigframe, all but the - * first one will see frame format 0 and have fsize == 0, so we won't - * screw stkadj. - */ - if (fsize) - regs->stkadj = fsize; - - /* Prepare to skip over the extra stuff in the exception frame. */ - if (regs->stkadj) { - struct pt_regs *tregs = - (struct pt_regs *)((ulong)regs + regs->stkadj); -#ifdef DEBUG - printk("Performing stackadjust=%04x\n", regs->stkadj); +#include "signal_no.c" #endif - /* This must be copied with decreasing addresses to - handle overlaps. */ - tregs->vector = 0; - tregs->format = 0; - tregs->pc = regs->pc; - tregs->sr = regs->sr; - } - return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return err; -} - -static inline void -handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) -{ - switch (regs->d0) { - case -ERESTARTNOHAND: - if (!has_handler) - goto do_restart; - regs->d0 = -EINTR; - break; - - case -ERESTART_RESTARTBLOCK: - if (!has_handler) { - regs->d0 = __NR_restart_syscall; - regs->pc -= 2; - break; - } - regs->d0 = -EINTR; - break; - - case -ERESTARTSYS: - if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) { - regs->d0 = -EINTR; - break; - } - /* fallthrough */ - case -ERESTARTNOINTR: - do_restart: - regs->d0 = regs->orig_d0; - regs->pc -= 2; - break; - } -} - -void ptrace_signal_deliver(struct pt_regs *regs, void *cookie) -{ - if (regs->orig_d0 < 0) - return; - switch (regs->d0) { - case -ERESTARTNOHAND: - case -ERESTARTSYS: - case -ERESTARTNOINTR: - regs->d0 = regs->orig_d0; - regs->orig_d0 = -1; - regs->pc -= 2; - break; - } -} - -/* - * OK, we're invoking a handler - */ -static void -handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs) -{ - int err; - /* are we from a system call? */ - if (regs->orig_d0 >= 0) - /* If so, check system call restarting.. */ - handle_restart(regs, ka, 1); - - /* set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - err = setup_rt_frame(sig, ka, info, oldset, regs); - else - err = setup_frame(sig, ka, oldset, regs); - - if (err) - return; - - sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked,sig); - recalc_sigpending(); - - if (test_thread_flag(TIF_DELAYED_TRACE)) { - regs->sr &= ~0x8000; - send_sig(SIGTRAP, current, 1); - } - - clear_thread_flag(TIF_RESTORE_SIGMASK); -} - -/* - * Note that 'init' is a special process: it doesn't get signals it doesn't - * want to handle. Thus you cannot kill init even with a SIGKILL even by - * mistake. - */ -asmlinkage void do_signal(struct pt_regs *regs) -{ - siginfo_t info; - struct k_sigaction ka; - int signr; - sigset_t *oldset; - - current->thread.esp0 = (unsigned long) regs; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, oldset, regs); - return; - } - - /* Did we come from a system call? */ - if (regs->orig_d0 >= 0) - /* Restart the system call - no handlers present */ - handle_restart(regs, NULL, 0); - - /* If there's no signal to deliver, we just restore the saved mask. */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } -} diff --git a/arch/m68k/kernel/signal_mm.c b/arch/m68k/kernel/signal_mm.c new file mode 100644 index 0000000..a0afc23 --- /dev/null +++ b/arch/m68k/kernel/signal_mm.c @@ -0,0 +1,1017 @@ +/* + * linux/arch/m68k/kernel/signal.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/* + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * + * 1997-12-01 Modified for POSIX.1b signals by Andreas Schwab + * + * mathemu support by Roman Zippel + * (Note: fpstate in the signal context is completely ignored for the emulator + * and the internal floating point format is put on stack) + */ + +/* + * ++roman (07/09/96): implemented signal stacks (specially for tosemu on + * Atari :-) Current limitation: Only one sigstack can be active at one time. + * If a second signal with SA_ONSTACK set arrives while working on a sigstack, + * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested + * signal handlers! + */ + +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/signal.h> +#include <linux/syscalls.h> +#include <linux/errno.h> +#include <linux/wait.h> +#include <linux/ptrace.h> +#include <linux/unistd.h> +#include <linux/stddef.h> +#include <linux/highuid.h> +#include <linux/personality.h> +#include <linux/tty.h> +#include <linux/binfmts.h> +#include <linux/module.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/pgtable.h> +#include <asm/traps.h> +#include <asm/ucontext.h> + +#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) + +static const int frame_extra_sizes[16] = { + [1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */ + [2] = sizeof(((struct frame *)0)->un.fmt2), + [3] = sizeof(((struct frame *)0)->un.fmt3), + [4] = sizeof(((struct frame *)0)->un.fmt4), + [5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */ + [6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */ + [7] = sizeof(((struct frame *)0)->un.fmt7), + [8] = -1, /* sizeof(((struct frame *)0)->un.fmt8), */ + [9] = sizeof(((struct frame *)0)->un.fmt9), + [10] = sizeof(((struct frame *)0)->un.fmta), + [11] = sizeof(((struct frame *)0)->un.fmtb), + [12] = -1, /* sizeof(((struct frame *)0)->un.fmtc), */ + [13] = -1, /* sizeof(((struct frame *)0)->un.fmtd), */ + [14] = -1, /* sizeof(((struct frame *)0)->un.fmte), */ + [15] = -1, /* sizeof(((struct frame *)0)->un.fmtf), */ +}; + +int handle_kernel_fault(struct pt_regs *regs) +{ + const struct exception_table_entry *fixup; + struct pt_regs *tregs; + + /* Are we prepared to handle this kernel fault? */ + fixup = search_exception_tables(regs->pc); + if (!fixup) + return 0; + + /* Create a new four word stack frame, discarding the old one. */ + regs->stkadj = frame_extra_sizes[regs->format]; + tregs = (struct pt_regs *)((long)regs + regs->stkadj); + tregs->vector = regs->vector; + tregs->format = 0; + tregs->pc = fixup->fixup; + tregs->sr = regs->sr; + + return 1; +} + +/* + * Atomically swap in the new signal mask, and wait for a signal. + */ +asmlinkage int +sys_sigsuspend(int unused0, int unused1, old_sigset_t mask) +{ + mask &= _BLOCKABLE; + spin_lock_irq(¤t->sighand->siglock); + current->saved_sigmask = current->blocked; + siginitset(¤t->blocked, mask); + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + current->state = TASK_INTERRUPTIBLE; + schedule(); + set_restore_sigmask(); + + return -ERESTARTNOHAND; +} + +asmlinkage int +sys_sigaction(int sig, const struct old_sigaction __user *act, + struct old_sigaction __user *oact) +{ + struct k_sigaction new_ka, old_ka; + int ret; + + if (act) { + old_sigset_t mask; + if (!access_ok(VERIFY_READ, act, sizeof(*act)) || + __get_user(new_ka.sa.sa_handler, &act->sa_handler) || + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || + __get_user(new_ka.sa.sa_flags, &act->sa_flags) || + __get_user(mask, &act->sa_mask)) + return -EFAULT; + siginitset(&new_ka.sa.sa_mask, mask); + } + + ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); + + if (!ret && oact) { + if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || + __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || + __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) + return -EFAULT; + } + + return ret; +} + +asmlinkage int +sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) +{ + return do_sigaltstack(uss, uoss, rdusp()); +} + + +/* + * Do a signal return; undo the signal stack. + * + * Keep the return code on the stack quadword aligned! + * That makes the cache flush below easier. + */ + +struct sigframe +{ + char __user *pretcode; + int sig; + int code; + struct sigcontext __user *psc; + char retcode[8]; + unsigned long extramask[_NSIG_WORDS-1]; + struct sigcontext sc; +}; + +struct rt_sigframe +{ + char __user *pretcode; + int sig; + struct siginfo __user *pinfo; + void __user *puc; + char retcode[8]; + struct siginfo info; + struct ucontext uc; +}; + + +static unsigned char fpu_version; /* version number of fpu, set by setup_frame */ + +static inline int restore_fpu_state(struct sigcontext *sc) +{ + int err = 1; + + if (FPU_IS_EMU) { + /* restore registers */ + memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12); + memcpy(current->thread.fp, sc->sc_fpregs, 24); + return 0; + } + + if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { + /* Verify the frame format. */ + if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version)) + goto out; + if (CPU_IS_020_OR_030) { + if (m68k_fputype & FPU_68881 && + !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4)) + goto out; + if (m68k_fputype & FPU_68882 && + !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4)) + goto out; + } else if (CPU_IS_040) { + if (!(sc->sc_fpstate[1] == 0x00 || + sc->sc_fpstate[1] == 0x28 || + sc->sc_fpstate[1] == 0x60)) + goto out; + } else if (CPU_IS_060) { + if (!(sc->sc_fpstate[3] == 0x00 || + sc->sc_fpstate[3] == 0x60 || + sc->sc_fpstate[3] == 0xe0)) + goto out; + } else + goto out; + + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %0,%%fp0-%%fp1\n\t" + "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" + ".chip 68k" + : /* no outputs */ + : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl)); + } + __asm__ volatile (".chip 68k/68881\n\t" + "frestore %0\n\t" + ".chip 68k" : : "m" (*sc->sc_fpstate)); + err = 0; + +out: + return err; +} + +#define FPCONTEXT_SIZE 216 +#define uc_fpstate uc_filler[0] +#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4] +#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1] + +static inline int rt_restore_fpu_state(struct ucontext __user *uc) +{ + unsigned char fpstate[FPCONTEXT_SIZE]; + int context_size = CPU_IS_060 ? 8 : 0; + fpregset_t fpregs; + int err = 1; + + if (FPU_IS_EMU) { + /* restore fpu control register */ + if (__copy_from_user(current->thread.fpcntl, + uc->uc_mcontext.fpregs.f_fpcntl, 12)) + goto out; + /* restore all other fpu register */ + if (__copy_from_user(current->thread.fp, + uc->uc_mcontext.fpregs.f_fpregs, 96)) + goto out; + return 0; + } + + if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate)) + goto out; + if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { + if (!CPU_IS_060) + context_size = fpstate[1]; + /* Verify the frame format. */ + if (!CPU_IS_060 && (fpstate[0] != fpu_version)) + goto out; + if (CPU_IS_020_OR_030) { + if (m68k_fputype & FPU_68881 && + !(context_size == 0x18 || context_size == 0xb4)) + goto out; + if (m68k_fputype & FPU_68882 && + !(context_size == 0x38 || context_size == 0xd4)) + goto out; + } else if (CPU_IS_040) { + if (!(context_size == 0x00 || + context_size == 0x28 || + context_size == 0x60)) + goto out; + } else if (CPU_IS_060) { + if (!(fpstate[3] == 0x00 || + fpstate[3] == 0x60 || + fpstate[3] == 0xe0)) + goto out; + } else + goto out; + if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs, + sizeof(fpregs))) + goto out; + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %0,%%fp0-%%fp7\n\t" + "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" + ".chip 68k" + : /* no outputs */ + : "m" (*fpregs.f_fpregs), + "m" (*fpregs.f_fpcntl)); + } + if (context_size && + __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1, + context_size)) + goto out; + __asm__ volatile (".chip 68k/68881\n\t" + "frestore %0\n\t" + ".chip 68k" : : "m" (*fpstate)); + err = 0; + +out: + return err; +} + +static int mangle_kernel_stack(struct pt_regs *regs, int formatvec, + void __user *fp) +{ + int fsize = frame_extra_sizes[formatvec >> 12]; + if (fsize < 0) { + /* + * user process trying to return with weird frame format + */ +#ifdef DEBUG + printk("user process returning with weird frame format\n"); +#endif + return 1; + } + if (!fsize) { + regs->format = formatvec >> 12; + regs->vector = formatvec & 0xfff; + } else { + struct switch_stack *sw = (struct switch_stack *)regs - 1; + unsigned long buf[fsize / 2]; /* yes, twice as much */ + + /* that'll make sure that expansion won't crap over data */ + if (copy_from_user(buf + fsize / 4, fp, fsize)) + return 1; + + /* point of no return */ + regs->format = formatvec >> 12; + regs->vector = formatvec & 0xfff; +#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack)) + __asm__ __volatile__ + (" movel %0,%/a0\n\t" + " subl %1,%/a0\n\t" /* make room on stack */ + " movel %/a0,%/sp\n\t" /* set stack pointer */ + /* move switch_stack and pt_regs */ + "1: movel %0@+,%/a0@+\n\t" + " dbra %2,1b\n\t" + " lea %/sp@(%c3),%/a0\n\t" /* add offset of fmt */ + " lsrl #2,%1\n\t" + " subql #1,%1\n\t" + /* copy to the gap we'd made */ + "2: movel %4@+,%/a0@+\n\t" + " dbra %1,2b\n\t" + " bral ret_from_signal\n" + : /* no outputs, it doesn't ever return */ + : "a" (sw), "d" (fsize), "d" (frame_offset/4-1), + "n" (frame_offset), "a" (buf + fsize/4) + : "a0"); +#undef frame_offset + } + return 0; +} + +static inline int +restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp) +{ + int formatvec; + struct sigcontext context; + int err; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + /* get previous context */ + if (copy_from_user(&context, usc, sizeof(context))) + goto badframe; + + /* restore passed registers */ + regs->d0 = context.sc_d0; + regs->d1 = context.sc_d1; + regs->a0 = context.sc_a0; + regs->a1 = context.sc_a1; + regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff); + regs->pc = context.sc_pc; + regs->orig_d0 = -1; /* disable syscall checks */ + wrusp(context.sc_usp); + formatvec = context.sc_formatvec; + + err = restore_fpu_state(&context); + + if (err || mangle_kernel_stack(regs, formatvec, fp)) + goto badframe; + + return 0; + +badframe: + return 1; +} + +static inline int +rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw, + struct ucontext __user *uc) +{ + int temp; + greg_t __user *gregs = uc->uc_mcontext.gregs; + unsigned long usp; + int err; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + err = __get_user(temp, &uc->uc_mcontext.version); + if (temp != MCONTEXT_VERSION) + goto badframe; + /* restore passed registers */ + err |= __get_user(regs->d0, &gregs[0]); + err |= __get_user(regs->d1, &gregs[1]); + err |= __get_user(regs->d2, &gregs[2]); + err |= __get_user(regs->d3, &gregs[3]); + err |= __get_user(regs->d4, &gregs[4]); + err |= __get_user(regs->d5, &gregs[5]); + err |= __get_user(sw->d6, &gregs[6]); + err |= __get_user(sw->d7, &gregs[7]); + err |= __get_user(regs->a0, &gregs[8]); + err |= __get_user(regs->a1, &gregs[9]); + err |= __get_user(regs->a2, &gregs[10]); + err |= __get_user(sw->a3, &gregs[11]); + err |= __get_user(sw->a4, &gregs[12]); + err |= __get_user(sw->a5, &gregs[13]); + err |= __get_user(sw->a6, &gregs[14]); + err |= __get_user(usp, &gregs[15]); + wrusp(usp); + err |= __get_user(regs->pc, &gregs[16]); + err |= __get_user(temp, &gregs[17]); + regs->sr = (regs->sr & 0xff00) | (temp & 0xff); + regs->orig_d0 = -1; /* disable syscall checks */ + err |= __get_user(temp, &uc->uc_formatvec); + + err |= rt_restore_fpu_state(uc); + + if (err || do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT) + goto badframe; + + if (mangle_kernel_stack(regs, temp, &uc->uc_extra)) + goto badframe; + + return 0; + +badframe: + return 1; +} + +asmlinkage int do_sigreturn(unsigned long __unused) +{ + struct switch_stack *sw = (struct switch_stack *) &__unused; + struct pt_regs *regs = (struct pt_regs *) (sw + 1); + unsigned long usp = rdusp(); + struct sigframe __user *frame = (struct sigframe __user *)(usp - 4); + sigset_t set; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__get_user(set.sig[0], &frame->sc.sc_mask) || + (_NSIG_WORDS > 1 && + __copy_from_user(&set.sig[1], &frame->extramask, + sizeof(frame->extramask)))) + goto badframe; + + sigdelsetmask(&set, ~_BLOCKABLE); + current->blocked = set; + recalc_sigpending(); + + if (restore_sigcontext(regs, &frame->sc, frame + 1)) + goto badframe; + return regs->d0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +asmlinkage int do_rt_sigreturn(unsigned long __unused) +{ + struct switch_stack *sw = (struct switch_stack *) &__unused; + struct pt_regs *regs = (struct pt_regs *) (sw + 1); + unsigned long usp = rdusp(); + struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4); + sigset_t set; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) + goto badframe; + + sigdelsetmask(&set, ~_BLOCKABLE); + current->blocked = set; + recalc_sigpending(); + + if (rt_restore_ucontext(regs, sw, &frame->uc)) + goto badframe; + return regs->d0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +/* + * Set up a signal frame. + */ + +static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) +{ + if (FPU_IS_EMU) { + /* save registers */ + memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12); + memcpy(sc->sc_fpregs, current->thread.fp, 24); + return; + } + + __asm__ volatile (".chip 68k/68881\n\t" + "fsave %0\n\t" + ".chip 68k" + : : "m" (*sc->sc_fpstate) : "memory"); + + if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { + fpu_version = sc->sc_fpstate[0]; + if (CPU_IS_020_OR_030 && + regs->vector >= (VEC_FPBRUC * 4) && + regs->vector <= (VEC_FPNAN * 4)) { + /* Clear pending exception in 68882 idle frame */ + if (*(unsigned short *) sc->sc_fpstate == 0x1f38) + sc->sc_fpstate[0x38] |= 1 << 3; + } + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %%fp0-%%fp1,%0\n\t" + "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" + ".chip 68k" + : "=m" (*sc->sc_fpregs), + "=m" (*sc->sc_fpcntl) + : /* no inputs */ + : "memory"); + } +} + +static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) +{ + unsigned char fpstate[FPCONTEXT_SIZE]; + int context_size = CPU_IS_060 ? 8 : 0; + int err = 0; + + if (FPU_IS_EMU) { + /* save fpu control register */ + err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl, + current->thread.fpcntl, 12); + /* save all other fpu register */ + err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs, + current->thread.fp, 96); + return err; + } + + __asm__ volatile (".chip 68k/68881\n\t" + "fsave %0\n\t" + ".chip 68k" + : : "m" (*fpstate) : "memory"); + + err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate); + if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { + fpregset_t fpregs; + if (!CPU_IS_060) + context_size = fpstate[1]; + fpu_version = fpstate[0]; + if (CPU_IS_020_OR_030 && + regs->vector >= (VEC_FPBRUC * 4) && + regs->vector <= (VEC_FPNAN * 4)) { + /* Clear pending exception in 68882 idle frame */ + if (*(unsigned short *) fpstate == 0x1f38) + fpstate[0x38] |= 1 << 3; + } + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %%fp0-%%fp7,%0\n\t" + "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" + ".chip 68k" + : "=m" (*fpregs.f_fpregs), + "=m" (*fpregs.f_fpcntl) + : /* no inputs */ + : "memory"); + err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs, + sizeof(fpregs)); + } + if (context_size) + err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4, + context_size); + return err; +} + +static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, + unsigned long mask) +{ + sc->sc_mask = mask; + sc->sc_usp = rdusp(); + sc->sc_d0 = regs->d0; + sc->sc_d1 = regs->d1; + sc->sc_a0 = regs->a0; + sc->sc_a1 = regs->a1; + sc->sc_sr = regs->sr; + sc->sc_pc = regs->pc; + sc->sc_formatvec = regs->format << 12 | regs->vector; + save_fpu_state(sc, regs); +} + +static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs) +{ + struct switch_stack *sw = (struct switch_stack *)regs - 1; + greg_t __user *gregs = uc->uc_mcontext.gregs; + int err = 0; + + err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version); + err |= __put_user(regs->d0, &gregs[0]); + err |= __put_user(regs->d1, &gregs[1]); + err |= __put_user(regs->d2, &gregs[2]); + err |= __put_user(regs->d3, &gregs[3]); + err |= __put_user(regs->d4, &gregs[4]); + err |= __put_user(regs->d5, &gregs[5]); + err |= __put_user(sw->d6, &gregs[6]); + err |= __put_user(sw->d7, &gregs[7]); + err |= __put_user(regs->a0, &gregs[8]); + err |= __put_user(regs->a1, &gregs[9]); + err |= __put_user(regs->a2, &gregs[10]); + err |= __put_user(sw->a3, &gregs[11]); + err |= __put_user(sw->a4, &gregs[12]); + err |= __put_user(sw->a5, &gregs[13]); + err |= __put_user(sw->a6, &gregs[14]); + err |= __put_user(rdusp(), &gregs[15]); + err |= __put_user(regs->pc, &gregs[16]); + err |= __put_user(regs->sr, &gregs[17]); + err |= __put_user((regs->format << 12) | regs->vector, &uc->uc_formatvec); + err |= rt_save_fpu_state(uc, regs); + return err; +} + +static inline void push_cache (unsigned long vaddr) +{ + /* + * Using the old cache_push_v() was really a big waste. + * + * What we are trying to do is to flush 8 bytes to ram. + * Flushing 2 cache lines of 16 bytes is much cheaper than + * flushing 1 or 2 pages, as previously done in + * cache_push_v(). + * Jes + */ + if (CPU_IS_040) { + unsigned long temp; + + __asm__ __volatile__ (".chip 68040\n\t" + "nop\n\t" + "ptestr (%1)\n\t" + "movec %%mmusr,%0\n\t" + ".chip 68k" + : "=r" (temp) + : "a" (vaddr)); + + temp &= PAGE_MASK; + temp |= vaddr & ~PAGE_MASK; + + __asm__ __volatile__ (".chip 68040\n\t" + "nop\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (temp)); + } + else if (CPU_IS_060) { + unsigned long temp; + __asm__ __volatile__ (".chip 68060\n\t" + "plpar (%0)\n\t" + ".chip 68k" + : "=a" (temp) + : "0" (vaddr)); + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (temp)); + } + else { + /* + * 68030/68020 have no writeback cache; + * still need to clear icache. + * Note that vaddr is guaranteed to be long word aligned. + */ + unsigned long temp; + asm volatile ("movec %%cacr,%0" : "=r" (temp)); + temp += 4; + asm volatile ("movec %0,%%caar\n\t" + "movec %1,%%cacr" + : : "r" (vaddr), "r" (temp)); + asm volatile ("movec %0,%%caar\n\t" + "movec %1,%%cacr" + : : "r" (vaddr + 4), "r" (temp)); + } +} + +static inline void __user * +get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +{ + unsigned long usp; + + /* Default to using normal stack. */ + usp = rdusp(); + + /* This is the X/Open sanctioned signal stack switching. */ + if (ka->sa.sa_flags & SA_ONSTACK) { + if (!sas_ss_flags(usp)) + usp = current->sas_ss_sp + current->sas_ss_size; + } + return (void __user *)((usp - frame_size) & -8UL); +} + +static int setup_frame (int sig, struct k_sigaction *ka, + sigset_t *set, struct pt_regs *regs) +{ + struct sigframe __user *frame; + int fsize = frame_extra_sizes[regs->format]; + struct sigcontext context; + int err = 0; + + if (fsize < 0) { +#ifdef DEBUG + printk ("setup_frame: Unknown frame format %#x\n", + regs->format); +#endif + goto give_sigsegv; + } + + frame = get_sigframe(ka, regs, sizeof(*frame) + fsize); + + if (fsize) + err |= copy_to_user (frame + 1, regs + 1, fsize); + + err |= __put_user((current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig), + &frame->sig); + + err |= __put_user(regs->vector, &frame->code); + err |= __put_user(&frame->sc, &frame->psc); + + if (_NSIG_WORDS > 1) + err |= copy_to_user(frame->extramask, &set->sig[1], + sizeof(frame->extramask)); + + setup_sigcontext(&context, regs, set->sig[0]); + err |= copy_to_user (&frame->sc, &context, sizeof(context)); + + /* Set up to return from userspace. */ + err |= __put_user(frame->retcode, &frame->pretcode); + /* moveq #,d0; trap #0 */ + err |= __put_user(0x70004e40 + (__NR_sigreturn << 16), + (long __user *)(frame->retcode)); + + if (err) + goto give_sigsegv; + + push_cache ((unsigned long) &frame->retcode); + + /* + * Set up registers for signal handler. All the state we are about + * to destroy is successfully copied to sigframe. + */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + + /* + * This is subtle; if we build more than one sigframe, all but the + * first one will see frame format 0 and have fsize == 0, so we won't + * screw stkadj. + */ + if (fsize) + regs->stkadj = fsize; + + /* Prepare to skip over the extra stuff in the exception frame. */ + if (regs->stkadj) { + struct pt_regs *tregs = + (struct pt_regs *)((ulong)regs + regs->stkadj); +#ifdef DEBUG + printk("Performing stackadjust=%04x\n", regs->stkadj); +#endif + /* This must be copied with decreasing addresses to + handle overlaps. */ + tregs->vector = 0; + tregs->format = 0; + tregs->pc = regs->pc; + tregs->sr = regs->sr; + } + return 0; + +give_sigsegv: + force_sigsegv(sig, current); + return err; +} + +static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, + sigset_t *set, struct pt_regs *regs) +{ + struct rt_sigframe __user *frame; + int fsize = frame_extra_sizes[regs->format]; + int err = 0; + + if (fsize < 0) { +#ifdef DEBUG + printk ("setup_frame: Unknown frame format %#x\n", + regs->format); +#endif + goto give_sigsegv; + } + + frame = get_sigframe(ka, regs, sizeof(*frame)); + + if (fsize) + err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize); + + err |= __put_user((current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig), + &frame->sig); + err |= __put_user(&frame->info, &frame->pinfo); + err |= __put_user(&frame->uc, &frame->puc); + err |= copy_siginfo_to_user(&frame->info, info); + + /* Create the ucontext. */ + err |= __put_user(0, &frame->uc.uc_flags); + err |= __put_user(NULL, &frame->uc.uc_link); + err |= __put_user((void __user *)current->sas_ss_sp, + &frame->uc.uc_stack.ss_sp); + err |= __put_user(sas_ss_flags(rdusp()), + &frame->uc.uc_stack.ss_flags); + err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); + err |= rt_setup_ucontext(&frame->uc, regs); + err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); + + /* Set up to return from userspace. */ + err |= __put_user(frame->retcode, &frame->pretcode); +#ifdef __mcoldfire__ + /* movel #__NR_rt_sigreturn,d0; trap #0 */ + err |= __put_user(0x203c0000, (long __user *)(frame->retcode + 0)); + err |= __put_user(0x00004e40 + (__NR_rt_sigreturn << 16), + (long __user *)(frame->retcode + 4)); +#else + /* moveq #,d0; notb d0; trap #0 */ + err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16), + (long __user *)(frame->retcode + 0)); + err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4)); +#endif + + if (err) + goto give_sigsegv; + + push_cache ((unsigned long) &frame->retcode); + + /* + * Set up registers for signal handler. All the state we are about + * to destroy is successfully copied to sigframe. + */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + + /* + * This is subtle; if we build more than one sigframe, all but the + * first one will see frame format 0 and have fsize == 0, so we won't + * screw stkadj. + */ + if (fsize) + regs->stkadj = fsize; + + /* Prepare to skip over the extra stuff in the exception frame. */ + if (regs->stkadj) { + struct pt_regs *tregs = + (struct pt_regs *)((ulong)regs + regs->stkadj); +#ifdef DEBUG + printk("Performing stackadjust=%04x\n", regs->stkadj); +#endif + /* This must be copied with decreasing addresses to + handle overlaps. */ + tregs->vector = 0; + tregs->format = 0; + tregs->pc = regs->pc; + tregs->sr = regs->sr; + } + return 0; + +give_sigsegv: + force_sigsegv(sig, current); + return err; +} + +static inline void +handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) +{ + switch (regs->d0) { + case -ERESTARTNOHAND: + if (!has_handler) + goto do_restart; + regs->d0 = -EINTR; + break; + + case -ERESTART_RESTARTBLOCK: + if (!has_handler) { + regs->d0 = __NR_restart_syscall; + regs->pc -= 2; + break; + } + regs->d0 = -EINTR; + break; + + case -ERESTARTSYS: + if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) { + regs->d0 = -EINTR; + break; + } + /* fallthrough */ + case -ERESTARTNOINTR: + do_restart: + regs->d0 = regs->orig_d0; + regs->pc -= 2; + break; + } +} + +void ptrace_signal_deliver(struct pt_regs *regs, void *cookie) +{ + if (regs->orig_d0 < 0) + return; + switch (regs->d0) { + case -ERESTARTNOHAND: + case -ERESTARTSYS: + case -ERESTARTNOINTR: + regs->d0 = regs->orig_d0; + regs->orig_d0 = -1; + regs->pc -= 2; + break; + } +} + +/* + * OK, we're invoking a handler + */ +static void +handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, + sigset_t *oldset, struct pt_regs *regs) +{ + int err; + /* are we from a system call? */ + if (regs->orig_d0 >= 0) + /* If so, check system call restarting.. */ + handle_restart(regs, ka, 1); + + /* set up the stack frame */ + if (ka->sa.sa_flags & SA_SIGINFO) + err = setup_rt_frame(sig, ka, info, oldset, regs); + else + err = setup_frame(sig, ka, oldset, regs); + + if (err) + return; + + sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); + if (!(ka->sa.sa_flags & SA_NODEFER)) + sigaddset(¤t->blocked,sig); + recalc_sigpending(); + + if (test_thread_flag(TIF_DELAYED_TRACE)) { + regs->sr &= ~0x8000; + send_sig(SIGTRAP, current, 1); + } + + clear_thread_flag(TIF_RESTORE_SIGMASK); +} + +/* + * Note that 'init' is a special process: it doesn't get signals it doesn't + * want to handle. Thus you cannot kill init even with a SIGKILL even by + * mistake. + */ +asmlinkage void do_signal(struct pt_regs *regs) +{ + siginfo_t info; + struct k_sigaction ka; + int signr; + sigset_t *oldset; + + current->thread.esp0 = (unsigned long) regs; + + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + oldset = ¤t->saved_sigmask; + else + oldset = ¤t->blocked; + + signr = get_signal_to_deliver(&info, &ka, regs, NULL); + if (signr > 0) { + /* Whee! Actually deliver the signal. */ + handle_signal(signr, &ka, &info, oldset, regs); + return; + } + + /* Did we come from a system call? */ + if (regs->orig_d0 >= 0) + /* Restart the system call - no handlers present */ + handle_restart(regs, NULL, 0); + + /* If there's no signal to deliver, we just restore the saved mask. */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) { + clear_thread_flag(TIF_RESTORE_SIGMASK); + sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); + } +} diff --git a/arch/m68k/kernel/signal_no.c b/arch/m68k/kernel/signal_no.c new file mode 100644 index 0000000..36a81bb --- /dev/null +++ b/arch/m68k/kernel/signal_no.c @@ -0,0 +1,765 @@ +/* + * linux/arch/m68knommu/kernel/signal.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/* + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * + * 1997-12-01 Modified for POSIX.1b signals by Andreas Schwab + * + * mathemu support by Roman Zippel + * (Note: fpstate in the signal context is completely ignored for the emulator + * and the internal floating point format is put on stack) + */ + +/* + * ++roman (07/09/96): implemented signal stacks (specially for tosemu on + * Atari :-) Current limitation: Only one sigstack can be active at one time. + * If a second signal with SA_ONSTACK set arrives while working on a sigstack, + * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested + * signal handlers! + */ + +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/signal.h> +#include <linux/syscalls.h> +#include <linux/errno.h> +#include <linux/wait.h> +#include <linux/ptrace.h> +#include <linux/unistd.h> +#include <linux/stddef.h> +#include <linux/highuid.h> +#include <linux/tty.h> +#include <linux/personality.h> +#include <linux/binfmts.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/pgtable.h> +#include <asm/traps.h> +#include <asm/ucontext.h> + +#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) + +void ret_from_user_signal(void); +void ret_from_user_rt_signal(void); + +/* + * Atomically swap in the new signal mask, and wait for a signal. + */ +asmlinkage int +sys_sigsuspend(int unused0, int unused1, old_sigset_t mask) +{ + mask &= _BLOCKABLE; + spin_lock_irq(¤t->sighand->siglock); + current->saved_sigmask = current->blocked; + siginitset(¤t->blocked, mask); + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + current->state = TASK_INTERRUPTIBLE; + schedule(); + set_restore_sigmask(); + + return -ERESTARTNOHAND; +} + +asmlinkage int +sys_sigaction(int sig, const struct old_sigaction __user *act, + struct old_sigaction __user *oact) +{ + struct k_sigaction new_ka, old_ka; + int ret; + + if (act) { + old_sigset_t mask; + if (!access_ok(VERIFY_READ, act, sizeof(*act)) || + __get_user(new_ka.sa.sa_handler, &act->sa_handler) || + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || + __get_user(new_ka.sa.sa_flags, &act->sa_flags) || + __get_user(mask, &act->sa_mask)) + return -EFAULT; + siginitset(&new_ka.sa.sa_mask, mask); + } + + ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); + + if (!ret && oact) { + if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || + __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || + __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) + return -EFAULT; + } + + return ret; +} + +asmlinkage int +sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) +{ + return do_sigaltstack(uss, uoss, rdusp()); +} + + +/* + * Do a signal return; undo the signal stack. + * + * Keep the return code on the stack quadword aligned! + * That makes the cache flush below easier. + */ + +struct sigframe +{ + char __user *pretcode; + int sig; + int code; + struct sigcontext __user *psc; + char retcode[8]; + unsigned long extramask[_NSIG_WORDS-1]; + struct sigcontext sc; +}; + +struct rt_sigframe +{ + char __user *pretcode; + int sig; + struct siginfo __user *pinfo; + void __user *puc; + char retcode[8]; + struct siginfo info; + struct ucontext uc; +}; + +#ifdef CONFIG_FPU + +static unsigned char fpu_version = 0; /* version number of fpu, set by setup_frame */ + +static inline int restore_fpu_state(struct sigcontext *sc) +{ + int err = 1; + + if (FPU_IS_EMU) { + /* restore registers */ + memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12); + memcpy(current->thread.fp, sc->sc_fpregs, 24); + return 0; + } + + if (sc->sc_fpstate[0]) { + /* Verify the frame format. */ + if (sc->sc_fpstate[0] != fpu_version) + goto out; + + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %0,%%fp0-%%fp1\n\t" + "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" + ".chip 68k" + : /* no outputs */ + : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl)); + } + __asm__ volatile (".chip 68k/68881\n\t" + "frestore %0\n\t" + ".chip 68k" : : "m" (*sc->sc_fpstate)); + err = 0; + +out: + return err; +} + +#define FPCONTEXT_SIZE 216 +#define uc_fpstate uc_filler[0] +#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4] +#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1] + +static inline int rt_restore_fpu_state(struct ucontext __user *uc) +{ + unsigned char fpstate[FPCONTEXT_SIZE]; + int context_size = 0; + fpregset_t fpregs; + int err = 1; + + if (FPU_IS_EMU) { + /* restore fpu control register */ + if (__copy_from_user(current->thread.fpcntl, + uc->uc_mcontext.fpregs.f_fpcntl, 12)) + goto out; + /* restore all other fpu register */ + if (__copy_from_user(current->thread.fp, + uc->uc_mcontext.fpregs.f_fpregs, 96)) + goto out; + return 0; + } + + if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate)) + goto out; + if (fpstate[0]) { + context_size = fpstate[1]; + + /* Verify the frame format. */ + if (fpstate[0] != fpu_version) + goto out; + if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs, + sizeof(fpregs))) + goto out; + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %0,%%fp0-%%fp7\n\t" + "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" + ".chip 68k" + : /* no outputs */ + : "m" (*fpregs.f_fpregs), + "m" (*fpregs.f_fpcntl)); + } + if (context_size && + __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1, + context_size)) + goto out; + __asm__ volatile (".chip 68k/68881\n\t" + "frestore %0\n\t" + ".chip 68k" : : "m" (*fpstate)); + err = 0; + +out: + return err; +} + +#endif + +static inline int +restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp, + int *pd0) +{ + int formatvec; + struct sigcontext context; + int err = 0; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + /* get previous context */ + if (copy_from_user(&context, usc, sizeof(context))) + goto badframe; + + /* restore passed registers */ + regs->d1 = context.sc_d1; + regs->a0 = context.sc_a0; + regs->a1 = context.sc_a1; + ((struct switch_stack *)regs - 1)->a5 = context.sc_a5; + regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff); + regs->pc = context.sc_pc; + regs->orig_d0 = -1; /* disable syscall checks */ + wrusp(context.sc_usp); + formatvec = context.sc_formatvec; + regs->format = formatvec >> 12; + regs->vector = formatvec & 0xfff; + +#ifdef CONFIG_FPU + err = restore_fpu_state(&context); +#endif + + *pd0 = context.sc_d0; + return err; + +badframe: + return 1; +} + +static inline int +rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw, + struct ucontext __user *uc, int *pd0) +{ + int temp; + greg_t __user *gregs = uc->uc_mcontext.gregs; + unsigned long usp; + int err; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + err = __get_user(temp, &uc->uc_mcontext.version); + if (temp != MCONTEXT_VERSION) + goto badframe; + /* restore passed registers */ + err |= __get_user(regs->d0, &gregs[0]); + err |= __get_user(regs->d1, &gregs[1]); + err |= __get_user(regs->d2, &gregs[2]); + err |= __get_user(regs->d3, &gregs[3]); + err |= __get_user(regs->d4, &gregs[4]); + err |= __get_user(regs->d5, &gregs[5]); + err |= __get_user(sw->d6, &gregs[6]); + err |= __get_user(sw->d7, &gregs[7]); + err |= __get_user(regs->a0, &gregs[8]); + err |= __get_user(regs->a1, &gregs[9]); + err |= __get_user(regs->a2, &gregs[10]); + err |= __get_user(sw->a3, &gregs[11]); + err |= __get_user(sw->a4, &gregs[12]); + err |= __get_user(sw->a5, &gregs[13]); + err |= __get_user(sw->a6, &gregs[14]); + err |= __get_user(usp, &gregs[15]); + wrusp(usp); + err |= __get_user(regs->pc, &gregs[16]); + err |= __get_user(temp, &gregs[17]); + regs->sr = (regs->sr & 0xff00) | (temp & 0xff); + regs->orig_d0 = -1; /* disable syscall checks */ + regs->format = temp >> 12; + regs->vector = temp & 0xfff; + + if (do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT) + goto badframe; + + *pd0 = regs->d0; + return err; + +badframe: + return 1; +} + +asmlinkage int do_sigreturn(unsigned long __unused) +{ + struct switch_stack *sw = (struct switch_stack *) &__unused; + struct pt_regs *regs = (struct pt_regs *) (sw + 1); + unsigned long usp = rdusp(); + struct sigframe __user *frame = (struct sigframe __user *)(usp - 4); + sigset_t set; + int d0; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__get_user(set.sig[0], &frame->sc.sc_mask) || + (_NSIG_WORDS > 1 && + __copy_from_user(&set.sig[1], &frame->extramask, + sizeof(frame->extramask)))) + goto badframe; + + sigdelsetmask(&set, ~_BLOCKABLE); + spin_lock_irq(¤t->sighand->siglock); + current->blocked = set; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + if (restore_sigcontext(regs, &frame->sc, frame + 1, &d0)) + goto badframe; + return d0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +asmlinkage int do_rt_sigreturn(unsigned long __unused) +{ + struct switch_stack *sw = (struct switch_stack *) &__unused; + struct pt_regs *regs = (struct pt_regs *) (sw + 1); + unsigned long usp = rdusp(); + struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4); + sigset_t set; + int d0; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) + goto badframe; + + sigdelsetmask(&set, ~_BLOCKABLE); + spin_lock_irq(¤t->sighand->siglock); + current->blocked = set; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + if (rt_restore_ucontext(regs, sw, &frame->uc, &d0)) + goto badframe; + return d0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +#ifdef CONFIG_FPU +/* + * Set up a signal frame. + */ + +static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) +{ + if (FPU_IS_EMU) { + /* save registers */ + memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12); + memcpy(sc->sc_fpregs, current->thread.fp, 24); + return; + } + + __asm__ volatile (".chip 68k/68881\n\t" + "fsave %0\n\t" + ".chip 68k" + : : "m" (*sc->sc_fpstate) : "memory"); + + if (sc->sc_fpstate[0]) { + fpu_version = sc->sc_fpstate[0]; + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %%fp0-%%fp1,%0\n\t" + "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" + ".chip 68k" + : "=m" (*sc->sc_fpregs), + "=m" (*sc->sc_fpcntl) + : /* no inputs */ + : "memory"); + } +} + +static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) +{ + unsigned char fpstate[FPCONTEXT_SIZE]; + int context_size = 0; + int err = 0; + + if (FPU_IS_EMU) { + /* save fpu control register */ + err |= copy_to_user(uc->uc_mcontext.fpregs.f_pcntl, + current->thread.fpcntl, 12); + /* save all other fpu register */ + err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs, + current->thread.fp, 96); + return err; + } + + __asm__ volatile (".chip 68k/68881\n\t" + "fsave %0\n\t" + ".chip 68k" + : : "m" (*fpstate) : "memory"); + + err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate); + if (fpstate[0]) { + fpregset_t fpregs; + context_size = fpstate[1]; + fpu_version = fpstate[0]; + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %%fp0-%%fp7,%0\n\t" + "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" + ".chip 68k" + : "=m" (*fpregs.f_fpregs), + "=m" (*fpregs.f_fpcntl) + : /* no inputs */ + : "memory"); + err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs, + sizeof(fpregs)); + } + if (context_size) + err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4, + context_size); + return err; +} + +#endif + +static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, + unsigned long mask) +{ + sc->sc_mask = mask; + sc->sc_usp = rdusp(); + sc->sc_d0 = regs->d0; + sc->sc_d1 = regs->d1; + sc->sc_a0 = regs->a0; + sc->sc_a1 = regs->a1; + sc->sc_a5 = ((struct switch_stack *)regs - 1)->a5; + sc->sc_sr = regs->sr; + sc->sc_pc = regs->pc; + sc->sc_formatvec = regs->format << 12 | regs->vector; +#ifdef CONFIG_FPU + save_fpu_state(sc, regs); +#endif +} + +static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs) +{ + struct switch_stack *sw = (struct switch_stack *)regs - 1; + greg_t __user *gregs = uc->uc_mcontext.gregs; + int err = 0; + + err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version); + err |= __put_user(regs->d0, &gregs[0]); + err |= __put_user(regs->d1, &gregs[1]); + err |= __put_user(regs->d2, &gregs[2]); + err |= __put_user(regs->d3, &gregs[3]); + err |= __put_user(regs->d4, &gregs[4]); + err |= __put_user(regs->d5, &gregs[5]); + err |= __put_user(sw->d6, &gregs[6]); + err |= __put_user(sw->d7, &gregs[7]); + err |= __put_user(regs->a0, &gregs[8]); + err |= __put_user(regs->a1, &gregs[9]); + err |= __put_user(regs->a2, &gregs[10]); + err |= __put_user(sw->a3, &gregs[11]); + err |= __put_user(sw->a4, &gregs[12]); + err |= __put_user(sw->a5, &gregs[13]); + err |= __put_user(sw->a6, &gregs[14]); + err |= __put_user(rdusp(), &gregs[15]); + err |= __put_user(regs->pc, &gregs[16]); + err |= __put_user(regs->sr, &gregs[17]); +#ifdef CONFIG_FPU + err |= rt_save_fpu_state(uc, regs); +#endif + return err; +} + +static inline void __user * +get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +{ + unsigned long usp; + + /* Default to using normal stack. */ + usp = rdusp(); + + /* This is the X/Open sanctioned signal stack switching. */ + if (ka->sa.sa_flags & SA_ONSTACK) { + if (!sas_ss_flags(usp)) + usp = current->sas_ss_sp + current->sas_ss_size; + } + return (void __user *)((usp - frame_size) & -8UL); +} + +static int setup_frame (int sig, struct k_sigaction *ka, + sigset_t *set, struct pt_regs *regs) +{ + struct sigframe __user *frame; + struct sigcontext context; + int err = 0; + + frame = get_sigframe(ka, regs, sizeof(*frame)); + + err |= __put_user((current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig), + &frame->sig); + + err |= __put_user(regs->vector, &frame->code); + err |= __put_user(&frame->sc, &frame->psc); + + if (_NSIG_WORDS > 1) + err |= copy_to_user(frame->extramask, &set->sig[1], + sizeof(frame->extramask)); + + setup_sigcontext(&context, regs, set->sig[0]); + err |= copy_to_user (&frame->sc, &context, sizeof(context)); + + /* Set up to return from userspace. */ + err |= __put_user((void *) ret_from_user_signal, &frame->pretcode); + + if (err) + goto give_sigsegv; + + /* Set up registers for signal handler */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + ((struct switch_stack *)regs - 1)->a5 = current->mm->start_data; + regs->format = 0x4; /*set format byte to make stack appear modulo 4 + which it will be when doing the rte */ + +adjust_stack: + /* Prepare to skip over the extra stuff in the exception frame. */ + if (regs->stkadj) { + struct pt_regs *tregs = + (struct pt_regs *)((ulong)regs + regs->stkadj); +#if defined(DEBUG) + printk(KERN_DEBUG "Performing stackadjust=%04x\n", regs->stkadj); +#endif + /* This must be copied with decreasing addresses to + handle overlaps. */ + tregs->vector = 0; + tregs->format = 0; + tregs->pc = regs->pc; + tregs->sr = regs->sr; + } + return err; + +give_sigsegv: + force_sigsegv(sig, current); + goto adjust_stack; +} + +static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, + sigset_t *set, struct pt_regs *regs) +{ + struct rt_sigframe __user *frame; + int err = 0; + + frame = get_sigframe(ka, regs, sizeof(*frame)); + + err |= __put_user((current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig), + &frame->sig); + err |= __put_user(&frame->info, &frame->pinfo); + err |= __put_user(&frame->uc, &frame->puc); + err |= copy_siginfo_to_user(&frame->info, info); + + /* Create the ucontext. */ + err |= __put_user(0, &frame->uc.uc_flags); + err |= __put_user(NULL, &frame->uc.uc_link); + err |= __put_user((void __user *)current->sas_ss_sp, + &frame->uc.uc_stack.ss_sp); + err |= __put_user(sas_ss_flags(rdusp()), + &frame->uc.uc_stack.ss_flags); + err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); + err |= rt_setup_ucontext(&frame->uc, regs); + err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); + + /* Set up to return from userspace. */ + err |= __put_user((void *) ret_from_user_rt_signal, &frame->pretcode); + + if (err) + goto give_sigsegv; + + /* Set up registers for signal handler */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + ((struct switch_stack *)regs - 1)->a5 = current->mm->start_data; + regs->format = 0x4; /*set format byte to make stack appear modulo 4 + which it will be when doing the rte */ + +adjust_stack: + /* Prepare to skip over the extra stuff in the exception frame. */ + if (regs->stkadj) { + struct pt_regs *tregs = + (struct pt_regs *)((ulong)regs + regs->stkadj); +#if defined(DEBUG) + printk(KERN_DEBUG "Performing stackadjust=%04x\n", regs->stkadj); +#endif + /* This must be copied with decreasing addresses to + handle overlaps. */ + tregs->vector = 0; + tregs->format = 0; + tregs->pc = regs->pc; + tregs->sr = regs->sr; + } + return err; + +give_sigsegv: + force_sigsegv(sig, current); + goto adjust_stack; +} + +static inline void +handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) +{ + switch (regs->d0) { + case -ERESTARTNOHAND: + if (!has_handler) + goto do_restart; + regs->d0 = -EINTR; + break; + + case -ERESTART_RESTARTBLOCK: + if (!has_handler) { + regs->d0 = __NR_restart_syscall; + regs->pc -= 2; + break; + } + regs->d0 = -EINTR; + break; + + case -ERESTARTSYS: + if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) { + regs->d0 = -EINTR; + break; + } + /* fallthrough */ + case -ERESTARTNOINTR: + do_restart: + regs->d0 = regs->orig_d0; + regs->pc -= 2; + break; + } +} + +/* + * OK, we're invoking a handler + */ +static void +handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, + sigset_t *oldset, struct pt_regs *regs) +{ + int err; + /* are we from a system call? */ + if (regs->orig_d0 >= 0) + /* If so, check system call restarting.. */ + handle_restart(regs, ka, 1); + + /* set up the stack frame */ + if (ka->sa.sa_flags & SA_SIGINFO) + err = setup_rt_frame(sig, ka, info, oldset, regs); + else + err = setup_frame(sig, ka, oldset, regs); + + if (err) + return; + + spin_lock_irq(¤t->sighand->siglock); + sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); + if (!(ka->sa.sa_flags & SA_NODEFER)) + sigaddset(¤t->blocked,sig); + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + clear_thread_flag(TIF_RESTORE_SIGMASK); +} + +/* + * Note that 'init' is a special process: it doesn't get signals it doesn't + * want to handle. Thus you cannot kill init even with a SIGKILL even by + * mistake. + */ +asmlinkage void do_signal(struct pt_regs *regs) +{ + struct k_sigaction ka; + siginfo_t info; + int signr; + sigset_t *oldset; + + /* + * We want the common case to go fast, which + * is why we may in certain cases get here from + * kernel mode. Just return without doing anything + * if so. + */ + if (!user_mode(regs)) + return; + + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + oldset = ¤t->saved_sigmask; + else + oldset = ¤t->blocked; + + signr = get_signal_to_deliver(&info, &ka, regs, NULL); + if (signr > 0) { + /* Whee! Actually deliver the signal. */ + handle_signal(signr, &ka, &info, oldset, regs); + return; + } + + /* Did we come from a system call? */ + if (regs->orig_d0 >= 0) { + /* Restart the system call - no handlers present */ + handle_restart(regs, NULL, 0); + } + + /* If there's no signal to deliver, we just restore the saved mask. */ + if (test_thread_flag(TIF_RESTORE_SIGMASK)) { + clear_thread_flag(TIF_RESTORE_SIGMASK); + sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); + } +} diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c index 3db2e7f..63013df 100644 --- a/arch/m68k/kernel/sys_m68k.c +++ b/arch/m68k/kernel/sys_m68k.c @@ -1,546 +1,5 @@ -/* - * linux/arch/m68k/kernel/sys_m68k.c - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/m68k - * platform. - */ - -#include <linux/capability.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/smp.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/syscalls.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/ipc.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/cachectl.h> -#include <asm/traps.h> -#include <asm/page.h> -#include <asm/unistd.h> -#include <linux/elf.h> -#include <asm/tlb.h> - -asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, - unsigned long error_code); - -asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - /* - * This is wrong for sun3 - there PAGE_SIZE is 8Kb, - * so we need to shift the argument down by 1; m68k mmap64(3) - * (in libc) expects the last argument of mmap2 in 4Kb units. - */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); -} - -/* Convert virtual (user) address VADDR to physical address PADDR */ -#define virt_to_phys_040(vaddr) \ -({ \ - unsigned long _mmusr, _paddr; \ - \ - __asm__ __volatile__ (".chip 68040\n\t" \ - "ptestr (%1)\n\t" \ - "movec %%mmusr,%0\n\t" \ - ".chip 68k" \ - : "=r" (_mmusr) \ - : "a" (vaddr)); \ - _paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0; \ - _paddr; \ -}) - -static inline int -cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len) -{ - unsigned long paddr, i; - - switch (scope) - { - case FLUSH_SCOPE_ALL: - switch (cache) - { - case FLUSH_CACHE_DATA: - /* This nop is needed for some broken versions of the 68040. */ - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpusha %dc\n\t" - ".chip 68k"); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpusha %ic\n\t" - ".chip 68k"); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpusha %bc\n\t" - ".chip 68k"); - break; - } - break; - - case FLUSH_SCOPE_LINE: - /* Find the physical address of the first mapped page in the - address range. */ - if ((paddr = virt_to_phys_040(addr))) { - paddr += addr & ~(PAGE_MASK | 15); - len = (len + (addr & 15) + 15) >> 4; - } else { - unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); - - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - tmp = PAGE_SIZE; - for (;;) - { - if ((paddr = virt_to_phys_040(addr))) - break; - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - } - len = (len + 15) >> 4; - } - i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; - while (len--) - { - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushl %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushl %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - if (!--i && len) - { - /* - * No need to page align here since it is done by - * virt_to_phys_040(). - */ - addr += PAGE_SIZE; - i = PAGE_SIZE / 16; - /* Recompute physical address when crossing a page - boundary. */ - for (;;) - { - if ((paddr = virt_to_phys_040(addr))) - break; - if (len <= i) - return 0; - len -= i; - addr += PAGE_SIZE; - } - } - else - paddr += 16; - } - break; - - default: - case FLUSH_SCOPE_PAGE: - len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); - for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) - { - if (!(paddr = virt_to_phys_040(addr))) - continue; - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushp %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushp %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ ("nop\n\t" - ".chip 68040\n\t" - "cpushp %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - } - break; - } - return 0; -} - -#define virt_to_phys_060(vaddr) \ -({ \ - unsigned long paddr; \ - __asm__ __volatile__ (".chip 68060\n\t" \ - "plpar (%0)\n\t" \ - ".chip 68k" \ - : "=a" (paddr) \ - : "0" (vaddr)); \ - (paddr); /* XXX */ \ -}) - -static inline int -cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len) -{ - unsigned long paddr, i; - - /* - * 68060 manual says: - * cpush %dc : flush DC, remains valid (with our %cacr setup) - * cpush %ic : invalidate IC - * cpush %bc : flush DC + invalidate IC - */ - switch (scope) - { - case FLUSH_SCOPE_ALL: - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ (".chip 68060\n\t" - "cpusha %dc\n\t" - ".chip 68k"); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ (".chip 68060\n\t" - "cpusha %ic\n\t" - ".chip 68k"); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ (".chip 68060\n\t" - "cpusha %bc\n\t" - ".chip 68k"); - break; - } - break; - - case FLUSH_SCOPE_LINE: - /* Find the physical address of the first mapped page in the - address range. */ - len += addr & 15; - addr &= -16; - if (!(paddr = virt_to_phys_060(addr))) { - unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); - - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - tmp = PAGE_SIZE; - for (;;) - { - if ((paddr = virt_to_phys_060(addr))) - break; - if (len <= tmp) - return 0; - addr += tmp; - len -= tmp; - } - } - len = (len + 15) >> 4; - i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; - while (len--) - { - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - if (!--i && len) - { - - /* - * We just want to jump to the first cache line - * in the next page. - */ - addr += PAGE_SIZE; - addr &= PAGE_MASK; - - i = PAGE_SIZE / 16; - /* Recompute physical address when crossing a page - boundary. */ - for (;;) - { - if ((paddr = virt_to_phys_060(addr))) - break; - if (len <= i) - return 0; - len -= i; - addr += PAGE_SIZE; - } - } - else - paddr += 16; - } - break; - - default: - case FLUSH_SCOPE_PAGE: - len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); - addr &= PAGE_MASK; /* Workaround for bug in some - revisions of the 68060 */ - for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) - { - if (!(paddr = virt_to_phys_060(addr))) - continue; - switch (cache) - { - case FLUSH_CACHE_DATA: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushp %%dc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - case FLUSH_CACHE_INSN: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushp %%ic,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - default: - case FLUSH_CACHE_BOTH: - __asm__ __volatile__ (".chip 68060\n\t" - "cpushp %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (paddr)); - break; - } - } - break; - } - return 0; -} - -/* sys_cacheflush -- flush (part of) the processor cache. */ -asmlinkage int -sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) -{ - struct vm_area_struct *vma; - int ret = -EINVAL; - - if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL || - cache & ~FLUSH_CACHE_BOTH) - goto out; - - if (scope == FLUSH_SCOPE_ALL) { - /* Only the superuser may explicitly flush the whole cache. */ - ret = -EPERM; - if (!capable(CAP_SYS_ADMIN)) - goto out; - } else { - /* - * Verify that the specified address region actually belongs - * to this process. - */ - vma = find_vma (current->mm, addr); - ret = -EINVAL; - /* Check for overflow. */ - if (addr + len < addr) - goto out; - if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end) - goto out; - } - - if (CPU_IS_020_OR_030) { - if (scope == FLUSH_SCOPE_LINE && len < 256) { - unsigned long cacr; - __asm__ ("movec %%cacr, %0" : "=r" (cacr)); - if (cache & FLUSH_CACHE_INSN) - cacr |= 4; - if (cache & FLUSH_CACHE_DATA) - cacr |= 0x400; - len >>= 2; - while (len--) { - __asm__ __volatile__ ("movec %1, %%caar\n\t" - "movec %0, %%cacr" - : /* no outputs */ - : "r" (cacr), "r" (addr)); - addr += 4; - } - } else { - /* Flush the whole cache, even if page granularity requested. */ - unsigned long cacr; - __asm__ ("movec %%cacr, %0" : "=r" (cacr)); - if (cache & FLUSH_CACHE_INSN) - cacr |= 8; - if (cache & FLUSH_CACHE_DATA) - cacr |= 0x800; - __asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr)); - } - ret = 0; - goto out; - } else { - /* - * 040 or 060: don't blindly trust 'scope', someone could - * try to flush a few megs of memory. - */ - - if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE) - scope=FLUSH_SCOPE_PAGE; - if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL) - scope=FLUSH_SCOPE_ALL; - if (CPU_IS_040) { - ret = cache_flush_040 (addr, scope, cache, len); - } else if (CPU_IS_060) { - ret = cache_flush_060 (addr, scope, cache, len); - } - } -out: - return ret; -} - -asmlinkage int sys_getpagesize(void) -{ - return PAGE_SIZE; -} - -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) -{ - register long __res asm ("%d0") = __NR_execve; - register long __a asm ("%d1") = (long)(filename); - register long __b asm ("%d2") = (long)(argv); - register long __c asm ("%d3") = (long)(envp); - asm volatile ("trap #0" : "+d" (__res) - : "d" (__a), "d" (__b), "d" (__c)); - return __res; -} - -asmlinkage unsigned long sys_get_thread_area(void) -{ - return current_thread_info()->tp_value; -} - -asmlinkage int sys_set_thread_area(unsigned long tp) -{ - current_thread_info()->tp_value = tp; - return 0; -} - -/* This syscall gets its arguments in A0 (mem), D2 (oldval) and - D1 (newval). */ -asmlinkage int -sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, - unsigned long __user * mem) -{ - /* This was borrowed from ARM's implementation. */ - for (;;) { - struct mm_struct *mm = current->mm; - pgd_t *pgd; - pmd_t *pmd; - pte_t *pte; - spinlock_t *ptl; - unsigned long mem_value; - - down_read(&mm->mmap_sem); - pgd = pgd_offset(mm, (unsigned long)mem); - if (!pgd_present(*pgd)) - goto bad_access; - pmd = pmd_offset(pgd, (unsigned long)mem); - if (!pmd_present(*pmd)) - goto bad_access; - pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl); - if (!pte_present(*pte) || !pte_dirty(*pte) - || !pte_write(*pte)) { - pte_unmap_unlock(pte, ptl); - goto bad_access; - } - - mem_value = *mem; - if (mem_value == oldval) - *mem = newval; - - pte_unmap_unlock(pte, ptl); - up_read(&mm->mmap_sem); - return mem_value; - - bad_access: - up_read(&mm->mmap_sem); - /* This is not necessarily a bad access, we can get here if - a memory we're trying to write to should be copied-on-write. - Make the kernel do the necessary page stuff, then re-iterate. - Simulate a write access fault to do that. */ - { - /* The first argument of the function corresponds to - D1, which is the first field of struct pt_regs. */ - struct pt_regs *fp = (struct pt_regs *)&newval; - - /* '3' is an RMW flag. */ - if (do_page_fault(fp, (unsigned long)mem, 3)) - /* If the do_page_fault() failed, we don't - have anything meaningful to return. - There should be a SIGSEGV pending for - the process. */ - return 0xdeadbeef; - } - } -} - -asmlinkage int sys_atomic_barrier(void) -{ - /* no code needed for uniprocs */ - return 0; -} +#ifdef CONFIG_MMU +#include "sys_m68k_mm.c" +#else +#include "sys_m68k_no.c" +#endif diff --git a/arch/m68k/kernel/sys_m68k_mm.c b/arch/m68k/kernel/sys_m68k_mm.c new file mode 100644 index 0000000..3db2e7f --- /dev/null +++ b/arch/m68k/kernel/sys_m68k_mm.c @@ -0,0 +1,546 @@ +/* + * linux/arch/m68k/kernel/sys_m68k.c + * + * This file contains various random system calls that + * have a non-standard calling sequence on the Linux/m68k + * platform. + */ + +#include <linux/capability.h> +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/fs.h> +#include <linux/smp.h> +#include <linux/sem.h> +#include <linux/msg.h> +#include <linux/shm.h> +#include <linux/stat.h> +#include <linux/syscalls.h> +#include <linux/mman.h> +#include <linux/file.h> +#include <linux/ipc.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/cachectl.h> +#include <asm/traps.h> +#include <asm/page.h> +#include <asm/unistd.h> +#include <linux/elf.h> +#include <asm/tlb.h> + +asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, + unsigned long error_code); + +asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff) +{ + /* + * This is wrong for sun3 - there PAGE_SIZE is 8Kb, + * so we need to shift the argument down by 1; m68k mmap64(3) + * (in libc) expects the last argument of mmap2 in 4Kb units. + */ + return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); +} + +/* Convert virtual (user) address VADDR to physical address PADDR */ +#define virt_to_phys_040(vaddr) \ +({ \ + unsigned long _mmusr, _paddr; \ + \ + __asm__ __volatile__ (".chip 68040\n\t" \ + "ptestr (%1)\n\t" \ + "movec %%mmusr,%0\n\t" \ + ".chip 68k" \ + : "=r" (_mmusr) \ + : "a" (vaddr)); \ + _paddr = (_mmusr & MMU_R_040) ? (_mmusr & PAGE_MASK) : 0; \ + _paddr; \ +}) + +static inline int +cache_flush_040 (unsigned long addr, int scope, int cache, unsigned long len) +{ + unsigned long paddr, i; + + switch (scope) + { + case FLUSH_SCOPE_ALL: + switch (cache) + { + case FLUSH_CACHE_DATA: + /* This nop is needed for some broken versions of the 68040. */ + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpusha %dc\n\t" + ".chip 68k"); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpusha %ic\n\t" + ".chip 68k"); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpusha %bc\n\t" + ".chip 68k"); + break; + } + break; + + case FLUSH_SCOPE_LINE: + /* Find the physical address of the first mapped page in the + address range. */ + if ((paddr = virt_to_phys_040(addr))) { + paddr += addr & ~(PAGE_MASK | 15); + len = (len + (addr & 15) + 15) >> 4; + } else { + unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); + + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + tmp = PAGE_SIZE; + for (;;) + { + if ((paddr = virt_to_phys_040(addr))) + break; + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + } + len = (len + 15) >> 4; + } + i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; + while (len--) + { + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushl %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushl %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + if (!--i && len) + { + /* + * No need to page align here since it is done by + * virt_to_phys_040(). + */ + addr += PAGE_SIZE; + i = PAGE_SIZE / 16; + /* Recompute physical address when crossing a page + boundary. */ + for (;;) + { + if ((paddr = virt_to_phys_040(addr))) + break; + if (len <= i) + return 0; + len -= i; + addr += PAGE_SIZE; + } + } + else + paddr += 16; + } + break; + + default: + case FLUSH_SCOPE_PAGE: + len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); + for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) + { + if (!(paddr = virt_to_phys_040(addr))) + continue; + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushp %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushp %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ ("nop\n\t" + ".chip 68040\n\t" + "cpushp %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + } + break; + } + return 0; +} + +#define virt_to_phys_060(vaddr) \ +({ \ + unsigned long paddr; \ + __asm__ __volatile__ (".chip 68060\n\t" \ + "plpar (%0)\n\t" \ + ".chip 68k" \ + : "=a" (paddr) \ + : "0" (vaddr)); \ + (paddr); /* XXX */ \ +}) + +static inline int +cache_flush_060 (unsigned long addr, int scope, int cache, unsigned long len) +{ + unsigned long paddr, i; + + /* + * 68060 manual says: + * cpush %dc : flush DC, remains valid (with our %cacr setup) + * cpush %ic : invalidate IC + * cpush %bc : flush DC + invalidate IC + */ + switch (scope) + { + case FLUSH_SCOPE_ALL: + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ (".chip 68060\n\t" + "cpusha %dc\n\t" + ".chip 68k"); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ (".chip 68060\n\t" + "cpusha %ic\n\t" + ".chip 68k"); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ (".chip 68060\n\t" + "cpusha %bc\n\t" + ".chip 68k"); + break; + } + break; + + case FLUSH_SCOPE_LINE: + /* Find the physical address of the first mapped page in the + address range. */ + len += addr & 15; + addr &= -16; + if (!(paddr = virt_to_phys_060(addr))) { + unsigned long tmp = PAGE_SIZE - (addr & ~PAGE_MASK); + + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + tmp = PAGE_SIZE; + for (;;) + { + if ((paddr = virt_to_phys_060(addr))) + break; + if (len <= tmp) + return 0; + addr += tmp; + len -= tmp; + } + } + len = (len + 15) >> 4; + i = (PAGE_SIZE - (paddr & ~PAGE_MASK)) >> 4; + while (len--) + { + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + if (!--i && len) + { + + /* + * We just want to jump to the first cache line + * in the next page. + */ + addr += PAGE_SIZE; + addr &= PAGE_MASK; + + i = PAGE_SIZE / 16; + /* Recompute physical address when crossing a page + boundary. */ + for (;;) + { + if ((paddr = virt_to_phys_060(addr))) + break; + if (len <= i) + return 0; + len -= i; + addr += PAGE_SIZE; + } + } + else + paddr += 16; + } + break; + + default: + case FLUSH_SCOPE_PAGE: + len += (addr & ~PAGE_MASK) + (PAGE_SIZE - 1); + addr &= PAGE_MASK; /* Workaround for bug in some + revisions of the 68060 */ + for (len >>= PAGE_SHIFT; len--; addr += PAGE_SIZE) + { + if (!(paddr = virt_to_phys_060(addr))) + continue; + switch (cache) + { + case FLUSH_CACHE_DATA: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushp %%dc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + case FLUSH_CACHE_INSN: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushp %%ic,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + default: + case FLUSH_CACHE_BOTH: + __asm__ __volatile__ (".chip 68060\n\t" + "cpushp %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (paddr)); + break; + } + } + break; + } + return 0; +} + +/* sys_cacheflush -- flush (part of) the processor cache. */ +asmlinkage int +sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) +{ + struct vm_area_struct *vma; + int ret = -EINVAL; + + if (scope < FLUSH_SCOPE_LINE || scope > FLUSH_SCOPE_ALL || + cache & ~FLUSH_CACHE_BOTH) + goto out; + + if (scope == FLUSH_SCOPE_ALL) { + /* Only the superuser may explicitly flush the whole cache. */ + ret = -EPERM; + if (!capable(CAP_SYS_ADMIN)) + goto out; + } else { + /* + * Verify that the specified address region actually belongs + * to this process. + */ + vma = find_vma (current->mm, addr); + ret = -EINVAL; + /* Check for overflow. */ + if (addr + len < addr) + goto out; + if (vma == NULL || addr < vma->vm_start || addr + len > vma->vm_end) + goto out; + } + + if (CPU_IS_020_OR_030) { + if (scope == FLUSH_SCOPE_LINE && len < 256) { + unsigned long cacr; + __asm__ ("movec %%cacr, %0" : "=r" (cacr)); + if (cache & FLUSH_CACHE_INSN) + cacr |= 4; + if (cache & FLUSH_CACHE_DATA) + cacr |= 0x400; + len >>= 2; + while (len--) { + __asm__ __volatile__ ("movec %1, %%caar\n\t" + "movec %0, %%cacr" + : /* no outputs */ + : "r" (cacr), "r" (addr)); + addr += 4; + } + } else { + /* Flush the whole cache, even if page granularity requested. */ + unsigned long cacr; + __asm__ ("movec %%cacr, %0" : "=r" (cacr)); + if (cache & FLUSH_CACHE_INSN) + cacr |= 8; + if (cache & FLUSH_CACHE_DATA) + cacr |= 0x800; + __asm__ __volatile__ ("movec %0, %%cacr" : : "r" (cacr)); + } + ret = 0; + goto out; + } else { + /* + * 040 or 060: don't blindly trust 'scope', someone could + * try to flush a few megs of memory. + */ + + if (len>=3*PAGE_SIZE && scope<FLUSH_SCOPE_PAGE) + scope=FLUSH_SCOPE_PAGE; + if (len>=10*PAGE_SIZE && scope<FLUSH_SCOPE_ALL) + scope=FLUSH_SCOPE_ALL; + if (CPU_IS_040) { + ret = cache_flush_040 (addr, scope, cache, len); + } else if (CPU_IS_060) { + ret = cache_flush_060 (addr, scope, cache, len); + } + } +out: + return ret; +} + +asmlinkage int sys_getpagesize(void) +{ + return PAGE_SIZE; +} + +/* + * Do a system call from kernel instead of calling sys_execve so we + * end up with proper pt_regs. + */ +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) +{ + register long __res asm ("%d0") = __NR_execve; + register long __a asm ("%d1") = (long)(filename); + register long __b asm ("%d2") = (long)(argv); + register long __c asm ("%d3") = (long)(envp); + asm volatile ("trap #0" : "+d" (__res) + : "d" (__a), "d" (__b), "d" (__c)); + return __res; +} + +asmlinkage unsigned long sys_get_thread_area(void) +{ + return current_thread_info()->tp_value; +} + +asmlinkage int sys_set_thread_area(unsigned long tp) +{ + current_thread_info()->tp_value = tp; + return 0; +} + +/* This syscall gets its arguments in A0 (mem), D2 (oldval) and + D1 (newval). */ +asmlinkage int +sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, + unsigned long __user * mem) +{ + /* This was borrowed from ARM's implementation. */ + for (;;) { + struct mm_struct *mm = current->mm; + pgd_t *pgd; + pmd_t *pmd; + pte_t *pte; + spinlock_t *ptl; + unsigned long mem_value; + + down_read(&mm->mmap_sem); + pgd = pgd_offset(mm, (unsigned long)mem); + if (!pgd_present(*pgd)) + goto bad_access; + pmd = pmd_offset(pgd, (unsigned long)mem); + if (!pmd_present(*pmd)) + goto bad_access; + pte = pte_offset_map_lock(mm, pmd, (unsigned long)mem, &ptl); + if (!pte_present(*pte) || !pte_dirty(*pte) + || !pte_write(*pte)) { + pte_unmap_unlock(pte, ptl); + goto bad_access; + } + + mem_value = *mem; + if (mem_value == oldval) + *mem = newval; + + pte_unmap_unlock(pte, ptl); + up_read(&mm->mmap_sem); + return mem_value; + + bad_access: + up_read(&mm->mmap_sem); + /* This is not necessarily a bad access, we can get here if + a memory we're trying to write to should be copied-on-write. + Make the kernel do the necessary page stuff, then re-iterate. + Simulate a write access fault to do that. */ + { + /* The first argument of the function corresponds to + D1, which is the first field of struct pt_regs. */ + struct pt_regs *fp = (struct pt_regs *)&newval; + + /* '3' is an RMW flag. */ + if (do_page_fault(fp, (unsigned long)mem, 3)) + /* If the do_page_fault() failed, we don't + have anything meaningful to return. + There should be a SIGSEGV pending for + the process. */ + return 0xdeadbeef; + } + } +} + +asmlinkage int sys_atomic_barrier(void) +{ + /* no code needed for uniprocs */ + return 0; +} diff --git a/arch/m68k/kernel/sys_m68k_no.c b/arch/m68k/kernel/sys_m68k_no.c new file mode 100644 index 0000000..68488ae --- /dev/null +++ b/arch/m68k/kernel/sys_m68k_no.c @@ -0,0 +1,94 @@ +/* + * linux/arch/m68knommu/kernel/sys_m68k.c + * + * This file contains various random system calls that + * have a non-standard calling sequence on the Linux/m68k + * platform. + */ + +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/sem.h> +#include <linux/msg.h> +#include <linux/shm.h> +#include <linux/stat.h> +#include <linux/syscalls.h> +#include <linux/mman.h> +#include <linux/file.h> +#include <linux/ipc.h> +#include <linux/fs.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/cachectl.h> +#include <asm/traps.h> +#include <asm/cacheflush.h> +#include <asm/unistd.h> + +/* sys_cacheflush -- flush (part of) the processor cache. */ +asmlinkage int +sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) +{ + flush_cache_all(); + return(0); +} + +asmlinkage int sys_getpagesize(void) +{ + return PAGE_SIZE; +} + +/* + * Do a system call from kernel instead of calling sys_execve so we + * end up with proper pt_regs. + */ +int kernel_execve(const char *filename, + const char *const argv[], + const char *const envp[]) +{ + register long __res asm ("%d0") = __NR_execve; + register long __a asm ("%d1") = (long)(filename); + register long __b asm ("%d2") = (long)(argv); + register long __c asm ("%d3") = (long)(envp); + asm volatile ("trap #0" : "+d" (__res) + : "d" (__a), "d" (__b), "d" (__c)); + return __res; +} + +asmlinkage unsigned long sys_get_thread_area(void) +{ + return current_thread_info()->tp_value; +} + +asmlinkage int sys_set_thread_area(unsigned long tp) +{ + current_thread_info()->tp_value = tp; + return 0; +} + +/* This syscall gets its arguments in A0 (mem), D2 (oldval) and + D1 (newval). */ +asmlinkage int +sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, + unsigned long __user * mem) +{ + struct mm_struct *mm = current->mm; + unsigned long mem_value; + + down_read(&mm->mmap_sem); + + mem_value = *mem; + if (mem_value == oldval) + *mem = newval; + + up_read(&mm->mmap_sem); + return mem_value; +} + +asmlinkage int sys_atomic_barrier(void) +{ + /* no code needed for uniprocs */ + return 0; +} diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S new file mode 100644 index 0000000..79b1ed1 --- /dev/null +++ b/arch/m68k/kernel/syscalltable.S @@ -0,0 +1,365 @@ +/* + * linux/arch/m68knommu/kernel/syscalltable.S + * + * Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com) + * + * Based on older entry.S files, the following copyrights apply: + * + * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * Copyright (C) 2000 Lineo Inc. (www.lineo.com) + * Copyright (C) 1991, 1992 Linus Torvalds + */ + +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/unistd.h> + +.text +ALIGN +ENTRY(sys_call_table) + .long sys_restart_syscall /* 0 - old "setup()" system call */ + .long sys_exit + .long sys_fork + .long sys_read + .long sys_write + .long sys_open /* 5 */ + .long sys_close + .long sys_waitpid + .long sys_creat + .long sys_link + .long sys_unlink /* 10 */ + .long sys_execve + .long sys_chdir + .long sys_time + .long sys_mknod + .long sys_chmod /* 15 */ + .long sys_chown16 + .long sys_ni_syscall /* old break syscall holder */ + .long sys_stat + .long sys_lseek + .long sys_getpid /* 20 */ + .long sys_mount + .long sys_oldumount + .long sys_setuid16 + .long sys_getuid16 + .long sys_stime /* 25 */ + .long sys_ptrace + .long sys_alarm + .long sys_fstat + .long sys_pause + .long sys_utime /* 30 */ + .long sys_ni_syscall /* old stty syscall holder */ + .long sys_ni_syscall /* old gtty syscall holder */ + .long sys_access + .long sys_nice + .long sys_ni_syscall /* 35 */ /* old ftime syscall holder */ + .long sys_sync + .long sys_kill + .long sys_rename + .long sys_mkdir + .long sys_rmdir /* 40 */ + .long sys_dup + .long sys_pipe + .long sys_times + .long sys_ni_syscall /* old prof syscall holder */ + .long sys_brk /* 45 */ + .long sys_setgid16 + .long sys_getgid16 + .long sys_signal + .long sys_geteuid16 + .long sys_getegid16 /* 50 */ + .long sys_acct + .long sys_umount /* recycled never used phys() */ + .long sys_ni_syscall /* old lock syscall holder */ + .long sys_ioctl + .long sys_fcntl /* 55 */ + .long sys_ni_syscall /* old mpx syscall holder */ + .long sys_setpgid + .long sys_ni_syscall /* old ulimit syscall holder */ + .long sys_ni_syscall + .long sys_umask /* 60 */ + .long sys_chroot + .long sys_ustat + .long sys_dup2 + .long sys_getppid + .long sys_getpgrp /* 65 */ + .long sys_setsid + .long sys_sigaction + .long sys_sgetmask + .long sys_ssetmask + .long sys_setreuid16 /* 70 */ + .long sys_setregid16 + .long sys_sigsuspend + .long sys_sigpending + .long sys_sethostname + .long sys_setrlimit /* 75 */ + .long sys_old_getrlimit + .long sys_getrusage + .long sys_gettimeofday + .long sys_settimeofday + .long sys_getgroups16 /* 80 */ + .long sys_setgroups16 + .long sys_old_select + .long sys_symlink + .long sys_lstat + .long sys_readlink /* 85 */ + .long sys_uselib + .long sys_ni_syscall /* sys_swapon */ + .long sys_reboot + .long sys_old_readdir + .long sys_old_mmap /* 90 */ + .long sys_munmap + .long sys_truncate + .long sys_ftruncate + .long sys_fchmod + .long sys_fchown16 /* 95 */ + .long sys_getpriority + .long sys_setpriority + .long sys_ni_syscall /* old profil syscall holder */ + .long sys_statfs + .long sys_fstatfs /* 100 */ + .long sys_ni_syscall /* ioperm for i386 */ + .long sys_socketcall + .long sys_syslog + .long sys_setitimer + .long sys_getitimer /* 105 */ + .long sys_newstat + .long sys_newlstat + .long sys_newfstat + .long sys_ni_syscall + .long sys_ni_syscall /* iopl for i386 */ /* 110 */ + .long sys_vhangup + .long sys_ni_syscall /* obsolete idle() syscall */ + .long sys_ni_syscall /* vm86old for i386 */ + .long sys_wait4 + .long sys_ni_syscall /* 115 */ /* sys_swapoff */ + .long sys_sysinfo + .long sys_ipc + .long sys_fsync + .long sys_sigreturn + .long sys_clone /* 120 */ + .long sys_setdomainname + .long sys_newuname + .long sys_cacheflush /* modify_ldt for i386 */ + .long sys_adjtimex + .long sys_ni_syscall /* 125 */ /* sys_mprotect */ + .long sys_sigprocmask + .long sys_ni_syscall /* old "creat_module" */ + .long sys_init_module + .long sys_delete_module + .long sys_ni_syscall /* 130: old "get_kernel_syms" */ + .long sys_quotactl + .long sys_getpgid + .long sys_fchdir + .long sys_bdflush + .long sys_sysfs /* 135 */ + .long sys_personality + .long sys_ni_syscall /* for afs_syscall */ + .long sys_setfsuid16 + .long sys_setfsgid16 + .long sys_llseek /* 140 */ + .long sys_getdents + .long sys_select + .long sys_flock + .long sys_ni_syscall /* sys_msync */ + .long sys_readv /* 145 */ + .long sys_writev + .long sys_getsid + .long sys_fdatasync + .long sys_sysctl + .long sys_ni_syscall /* 150 */ /* sys_mlock */ + .long sys_ni_syscall /* sys_munlock */ + .long sys_ni_syscall /* sys_mlockall */ + .long sys_ni_syscall /* sys_munlockall */ + .long sys_sched_setparam + .long sys_sched_getparam /* 155 */ + .long sys_sched_setscheduler + .long sys_sched_getscheduler + .long sys_sched_yield + .long sys_sched_get_priority_max + .long sys_sched_get_priority_min /* 160 */ + .long sys_sched_rr_get_interval + .long sys_nanosleep + .long sys_ni_syscall /* sys_mremap */ + .long sys_setresuid16 + .long sys_getresuid16 /* 165 */ + .long sys_getpagesize /* sys_getpagesize */ + .long sys_ni_syscall /* old "query_module" */ + .long sys_poll + .long sys_ni_syscall /* sys_nfsservctl */ + .long sys_setresgid16 /* 170 */ + .long sys_getresgid16 + .long sys_prctl + .long sys_rt_sigreturn + .long sys_rt_sigaction + .long sys_rt_sigprocmask /* 175 */ + .long sys_rt_sigpending + .long sys_rt_sigtimedwait + .long sys_rt_sigqueueinfo + .long sys_rt_sigsuspend + .long sys_pread64 /* 180 */ + .long sys_pwrite64 + .long sys_lchown16 + .long sys_getcwd + .long sys_capget + .long sys_capset /* 185 */ + .long sys_sigaltstack + .long sys_sendfile + .long sys_ni_syscall /* streams1 */ + .long sys_ni_syscall /* streams2 */ + .long sys_vfork /* 190 */ + .long sys_getrlimit + .long sys_mmap_pgoff + .long sys_truncate64 + .long sys_ftruncate64 + .long sys_stat64 /* 195 */ + .long sys_lstat64 + .long sys_fstat64 + .long sys_chown + .long sys_getuid + .long sys_getgid /* 200 */ + .long sys_geteuid + .long sys_getegid + .long sys_setreuid + .long sys_setregid + .long sys_getgroups /* 205 */ + .long sys_setgroups + .long sys_fchown + .long sys_setresuid + .long sys_getresuid + .long sys_setresgid /* 210 */ + .long sys_getresgid + .long sys_lchown + .long sys_setuid + .long sys_setgid + .long sys_setfsuid /* 215 */ + .long sys_setfsgid + .long sys_pivot_root + .long sys_ni_syscall + .long sys_ni_syscall + .long sys_getdents64 /* 220 */ + .long sys_gettid + .long sys_tkill + .long sys_setxattr + .long sys_lsetxattr + .long sys_fsetxattr /* 225 */ + .long sys_getxattr + .long sys_lgetxattr + .long sys_fgetxattr + .long sys_listxattr + .long sys_llistxattr /* 230 */ + .long sys_flistxattr + .long sys_removexattr + .long sys_lremovexattr + .long sys_fremovexattr + .long sys_futex /* 235 */ + .long sys_sendfile64 + .long sys_ni_syscall /* sys_mincore */ + .long sys_ni_syscall /* sys_madvise */ + .long sys_fcntl64 + .long sys_readahead /* 240 */ + .long sys_io_setup + .long sys_io_destroy + .long sys_io_getevents + .long sys_io_submit + .long sys_io_cancel /* 245 */ + .long sys_fadvise64 + .long sys_exit_group + .long sys_lookup_dcookie + .long sys_epoll_create + .long sys_epoll_ctl /* 250 */ + .long sys_epoll_wait + .long sys_ni_syscall /* sys_remap_file_pages */ + .long sys_set_tid_address + .long sys_timer_create + .long sys_timer_settime /* 255 */ + .long sys_timer_gettime + .long sys_timer_getoverrun + .long sys_timer_delete + .long sys_clock_settime + .long sys_clock_gettime /* 260 */ + .long sys_clock_getres + .long sys_clock_nanosleep + .long sys_statfs64 + .long sys_fstatfs64 + .long sys_tgkill /* 265 */ + .long sys_utimes + .long sys_fadvise64_64 + .long sys_mbind + .long sys_get_mempolicy + .long sys_set_mempolicy /* 270 */ + .long sys_mq_open + .long sys_mq_unlink + .long sys_mq_timedsend + .long sys_mq_timedreceive + .long sys_mq_notify /* 275 */ + .long sys_mq_getsetattr + .long sys_waitid + .long sys_ni_syscall /* for sys_vserver */ + .long sys_add_key + .long sys_request_key /* 280 */ + .long sys_keyctl + .long sys_ioprio_set + .long sys_ioprio_get + .long sys_inotify_init + .long sys_inotify_add_watch /* 285 */ + .long sys_inotify_rm_watch + .long sys_migrate_pages + .long sys_openat + .long sys_mkdirat + .long sys_mknodat /* 290 */ + .long sys_fchownat + .long sys_futimesat + .long sys_fstatat64 + .long sys_unlinkat + .long sys_renameat /* 295 */ + .long sys_linkat + .long sys_symlinkat + .long sys_readlinkat + .long sys_fchmodat + .long sys_faccessat /* 300 */ + .long sys_ni_syscall /* Reserved for pselect6 */ + .long sys_ni_syscall /* Reserved for ppoll */ + .long sys_unshare + .long sys_set_robust_list + .long sys_get_robust_list /* 305 */ + .long sys_splice + .long sys_sync_file_range + .long sys_tee + .long sys_vmsplice + .long sys_move_pages /* 310 */ + .long sys_sched_setaffinity + .long sys_sched_getaffinity + .long sys_kexec_load + .long sys_getcpu + .long sys_epoll_pwait /* 315 */ + .long sys_utimensat + .long sys_signalfd + .long sys_timerfd_create + .long sys_eventfd + .long sys_fallocate /* 320 */ + .long sys_timerfd_settime + .long sys_timerfd_gettime + .long sys_signalfd4 + .long sys_eventfd2 + .long sys_epoll_create1 /* 325 */ + .long sys_dup3 + .long sys_pipe2 + .long sys_inotify_init1 + .long sys_preadv + .long sys_pwritev /* 330 */ + .long sys_rt_tgsigqueueinfo + .long sys_perf_event_open + .long sys_get_thread_area + .long sys_set_thread_area + .long sys_atomic_cmpxchg_32 /* 335 */ + .long sys_atomic_barrier + .long sys_fanotify_init + .long sys_fanotify_mark + .long sys_prlimit64 + + .rept NR_syscalls-(.-sys_call_table)/4 + .long sys_ni_syscall + .endr + diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c index 18b34ee..a5cf40c 100644 --- a/arch/m68k/kernel/time.c +++ b/arch/m68k/kernel/time.c @@ -1,114 +1,5 @@ -/* - * linux/arch/m68k/kernel/time.c - * - * Copyright (C) 1991, 1992, 1995 Linus Torvalds - * - * This file contains the m68k-specific time handling details. - * Most of the stuff is located in the machine specific files. - * - * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 - * "A Kernel Model for Precision Timekeeping" by Dave Mills - */ - -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/rtc.h> -#include <linux/platform_device.h> - -#include <asm/machdep.h> -#include <asm/io.h> -#include <asm/irq_regs.h> - -#include <linux/time.h> -#include <linux/timex.h> -#include <linux/profile.h> - -static inline int set_rtc_mmss(unsigned long nowtime) -{ - if (mach_set_clock_mmss) - return mach_set_clock_mmss (nowtime); - return -1; -} - -/* - * timer_interrupt() needs to keep up the real-time clock, - * as well as call the "xtime_update()" routine every clocktick - */ -static irqreturn_t timer_interrupt(int irq, void *dummy) -{ - xtime_update(1); - update_process_times(user_mode(get_irq_regs())); - profile_tick(CPU_PROFILING); - -#ifdef CONFIG_HEARTBEAT - /* use power LED as a heartbeat instead -- much more useful - for debugging -- based on the version for PReP by Cort */ - /* acts like an actual heart beat -- ie thump-thump-pause... */ - if (mach_heartbeat) { - static unsigned cnt = 0, period = 0, dist = 0; - - if (cnt == 0 || cnt == dist) - mach_heartbeat( 1 ); - else if (cnt == 7 || cnt == dist+7) - mach_heartbeat( 0 ); - - if (++cnt > period) { - cnt = 0; - /* The hyperbolic function below modifies the heartbeat period - * length in dependency of the current (5min) load. It goes - * through the points f(0)=126, f(1)=86, f(5)=51, - * f(inf)->30. */ - period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30; - dist = period / 4; - } - } -#endif /* CONFIG_HEARTBEAT */ - return IRQ_HANDLED; -} - -void read_persistent_clock(struct timespec *ts) -{ - struct rtc_time time; - ts->tv_sec = 0; - ts->tv_nsec = 0; - - if (mach_hwclk) { - mach_hwclk(0, &time); - - if ((time.tm_year += 1900) < 1970) - time.tm_year += 100; - ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday, - time.tm_hour, time.tm_min, time.tm_sec); - } -} - -void __init time_init(void) -{ - mach_sched_init(timer_interrupt); -} - -u32 arch_gettimeoffset(void) -{ - return mach_gettimeoffset() * 1000; -} - -static int __init rtc_init(void) -{ - struct platform_device *pdev; - - if (!mach_hwclk) - return -ENODEV; - - pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0); - if (IS_ERR(pdev)) - return PTR_ERR(pdev); - - return 0; -} - -module_init(rtc_init); +#ifdef CONFIG_MMU +#include "time_mm.c" +#else +#include "time_no.c" +#endif diff --git a/arch/m68k/kernel/time_mm.c b/arch/m68k/kernel/time_mm.c new file mode 100644 index 0000000..18b34ee --- /dev/null +++ b/arch/m68k/kernel/time_mm.c @@ -0,0 +1,114 @@ +/* + * linux/arch/m68k/kernel/time.c + * + * Copyright (C) 1991, 1992, 1995 Linus Torvalds + * + * This file contains the m68k-specific time handling details. + * Most of the stuff is located in the machine specific files. + * + * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 + * "A Kernel Model for Precision Timekeeping" by Dave Mills + */ + +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/rtc.h> +#include <linux/platform_device.h> + +#include <asm/machdep.h> +#include <asm/io.h> +#include <asm/irq_regs.h> + +#include <linux/time.h> +#include <linux/timex.h> +#include <linux/profile.h> + +static inline int set_rtc_mmss(unsigned long nowtime) +{ + if (mach_set_clock_mmss) + return mach_set_clock_mmss (nowtime); + return -1; +} + +/* + * timer_interrupt() needs to keep up the real-time clock, + * as well as call the "xtime_update()" routine every clocktick + */ +static irqreturn_t timer_interrupt(int irq, void *dummy) +{ + xtime_update(1); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); + +#ifdef CONFIG_HEARTBEAT + /* use power LED as a heartbeat instead -- much more useful + for debugging -- based on the version for PReP by Cort */ + /* acts like an actual heart beat -- ie thump-thump-pause... */ + if (mach_heartbeat) { + static unsigned cnt = 0, period = 0, dist = 0; + + if (cnt == 0 || cnt == dist) + mach_heartbeat( 1 ); + else if (cnt == 7 || cnt == dist+7) + mach_heartbeat( 0 ); + + if (++cnt > period) { + cnt = 0; + /* The hyperbolic function below modifies the heartbeat period + * length in dependency of the current (5min) load. It goes + * through the points f(0)=126, f(1)=86, f(5)=51, + * f(inf)->30. */ + period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30; + dist = period / 4; + } + } +#endif /* CONFIG_HEARTBEAT */ + return IRQ_HANDLED; +} + +void read_persistent_clock(struct timespec *ts) +{ + struct rtc_time time; + ts->tv_sec = 0; + ts->tv_nsec = 0; + + if (mach_hwclk) { + mach_hwclk(0, &time); + + if ((time.tm_year += 1900) < 1970) + time.tm_year += 100; + ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday, + time.tm_hour, time.tm_min, time.tm_sec); + } +} + +void __init time_init(void) +{ + mach_sched_init(timer_interrupt); +} + +u32 arch_gettimeoffset(void) +{ + return mach_gettimeoffset() * 1000; +} + +static int __init rtc_init(void) +{ + struct platform_device *pdev; + + if (!mach_hwclk) + return -ENODEV; + + pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); + + return 0; +} + +module_init(rtc_init); diff --git a/arch/m68k/kernel/time_no.c b/arch/m68k/kernel/time_no.c new file mode 100644 index 0000000..6623909 --- /dev/null +++ b/arch/m68k/kernel/time_no.c @@ -0,0 +1,87 @@ +/* + * linux/arch/m68knommu/kernel/time.c + * + * Copyright (C) 1991, 1992, 1995 Linus Torvalds + * + * This file contains the m68k-specific time handling details. + * Most of the stuff is located in the machine specific files. + * + * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 + * "A Kernel Model for Precision Timekeeping" by Dave Mills + */ + +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/profile.h> +#include <linux/time.h> +#include <linux/timex.h> + +#include <asm/machdep.h> +#include <asm/irq_regs.h> + +#define TICK_SIZE (tick_nsec / 1000) + +static inline int set_rtc_mmss(unsigned long nowtime) +{ + if (mach_set_clock_mmss) + return mach_set_clock_mmss (nowtime); + return -1; +} + +#ifndef CONFIG_GENERIC_CLOCKEVENTS +/* + * timer_interrupt() needs to keep up the real-time clock, + * as well as call the "xtime_update()" routine every clocktick + */ +irqreturn_t arch_timer_interrupt(int irq, void *dummy) +{ + + if (current->pid) + profile_tick(CPU_PROFILING); + + xtime_update(1); + + update_process_times(user_mode(get_irq_regs())); + + return(IRQ_HANDLED); +} +#endif + +static unsigned long read_rtc_mmss(void) +{ + unsigned int year, mon, day, hour, min, sec; + + if (mach_gettod) { + mach_gettod(&year, &mon, &day, &hour, &min, &sec); + if ((year += 1900) < 1970) + year += 100; + } else { + year = 1970; + mon = day = 1; + hour = min = sec = 0; + } + + + return mktime(year, mon, day, hour, min, sec); +} + +void read_persistent_clock(struct timespec *ts) +{ + ts->tv_sec = read_rtc_mmss(); + ts->tv_nsec = 0; +} + +int update_persistent_clock(struct timespec now) +{ + return set_rtc_mmss(now.tv_sec); +} + +void time_init(void) +{ + hw_timer_init(); +} diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c index 4022bbc..c98add3 100644 --- a/arch/m68k/kernel/traps.c +++ b/arch/m68k/kernel/traps.c @@ -1,1207 +1,5 @@ -/* - * linux/arch/m68k/kernel/traps.c - * - * Copyright (C) 1993, 1994 by Hamish Macdonald - * - * 68040 fixes by Michael Rausch - * 68040 fixes by Martin Apel - * 68040 fixes and writeback by Richard Zidlicky - * 68060 fixes by Roman Hodek - * 68060 fixes by Jesper Skov - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -/* - * Sets up all exception vectors - */ - -#include <linux/sched.h> -#include <linux/signal.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/user.h> -#include <linux/string.h> -#include <linux/linkage.h> -#include <linux/init.h> -#include <linux/ptrace.h> -#include <linux/kallsyms.h> - -#include <asm/setup.h> -#include <asm/fpu.h> -#include <asm/system.h> -#include <asm/uaccess.h> -#include <asm/traps.h> -#include <asm/pgalloc.h> -#include <asm/machdep.h> -#include <asm/siginfo.h> - -/* assembler routines */ -asmlinkage void system_call(void); -asmlinkage void buserr(void); -asmlinkage void trap(void); -asmlinkage void nmihandler(void); -#ifdef CONFIG_M68KFPU_EMU -asmlinkage void fpu_emu(void); -#endif - -e_vector vectors[256]; - -/* nmi handler for the Amiga */ -asm(".text\n" - __ALIGN_STR "\n" - "nmihandler: rte"); - -/* - * this must be called very early as the kernel might - * use some instruction that are emulated on the 060 - * and so we're prepared for early probe attempts (e.g. nf_init). - */ -void __init base_trap_init(void) -{ - if (MACH_IS_SUN3X) { - extern e_vector *sun3x_prom_vbr; - - __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr)); - } - - /* setup the exception vector table */ - __asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors)); - - if (CPU_IS_060) { - /* set up ISP entry points */ - asmlinkage void unimp_vec(void) asm ("_060_isp_unimp"); - - vectors[VEC_UNIMPII] = unimp_vec; - } - - vectors[VEC_BUSERR] = buserr; - vectors[VEC_ILLEGAL] = trap; - vectors[VEC_SYS] = system_call; -} - -void __init trap_init (void) -{ - int i; - - for (i = VEC_SPUR; i <= VEC_INT7; i++) - vectors[i] = bad_inthandler; - - for (i = 0; i < VEC_USER; i++) - if (!vectors[i]) - vectors[i] = trap; - - for (i = VEC_USER; i < 256; i++) - vectors[i] = bad_inthandler; - -#ifdef CONFIG_M68KFPU_EMU - if (FPU_IS_EMU) - vectors[VEC_LINE11] = fpu_emu; -#endif - - if (CPU_IS_040 && !FPU_IS_EMU) { - /* set up FPSP entry points */ - asmlinkage void dz_vec(void) asm ("dz"); - asmlinkage void inex_vec(void) asm ("inex"); - asmlinkage void ovfl_vec(void) asm ("ovfl"); - asmlinkage void unfl_vec(void) asm ("unfl"); - asmlinkage void snan_vec(void) asm ("snan"); - asmlinkage void operr_vec(void) asm ("operr"); - asmlinkage void bsun_vec(void) asm ("bsun"); - asmlinkage void fline_vec(void) asm ("fline"); - asmlinkage void unsupp_vec(void) asm ("unsupp"); - - vectors[VEC_FPDIVZ] = dz_vec; - vectors[VEC_FPIR] = inex_vec; - vectors[VEC_FPOVER] = ovfl_vec; - vectors[VEC_FPUNDER] = unfl_vec; - vectors[VEC_FPNAN] = snan_vec; - vectors[VEC_FPOE] = operr_vec; - vectors[VEC_FPBRUC] = bsun_vec; - vectors[VEC_LINE11] = fline_vec; - vectors[VEC_FPUNSUP] = unsupp_vec; - } - - if (CPU_IS_060 && !FPU_IS_EMU) { - /* set up IFPSP entry points */ - asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan"); - asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr"); - asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl"); - asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl"); - asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz"); - asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex"); - asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline"); - asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp"); - asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd"); - - vectors[VEC_FPNAN] = snan_vec6; - vectors[VEC_FPOE] = operr_vec6; - vectors[VEC_FPOVER] = ovfl_vec6; - vectors[VEC_FPUNDER] = unfl_vec6; - vectors[VEC_FPDIVZ] = dz_vec6; - vectors[VEC_FPIR] = inex_vec6; - vectors[VEC_LINE11] = fline_vec6; - vectors[VEC_FPUNSUP] = unsupp_vec6; - vectors[VEC_UNIMPEA] = effadd_vec6; - } - - /* if running on an amiga, make the NMI interrupt do nothing */ - if (MACH_IS_AMIGA) { - vectors[VEC_INT7] = nmihandler; - } -} - - -static const char *vec_names[] = { - [VEC_RESETSP] = "RESET SP", - [VEC_RESETPC] = "RESET PC", - [VEC_BUSERR] = "BUS ERROR", - [VEC_ADDRERR] = "ADDRESS ERROR", - [VEC_ILLEGAL] = "ILLEGAL INSTRUCTION", - [VEC_ZERODIV] = "ZERO DIVIDE", - [VEC_CHK] = "CHK", - [VEC_TRAP] = "TRAPcc", - [VEC_PRIV] = "PRIVILEGE VIOLATION", - [VEC_TRACE] = "TRACE", - [VEC_LINE10] = "LINE 1010", - [VEC_LINE11] = "LINE 1111", - [VEC_RESV12] = "UNASSIGNED RESERVED 12", - [VEC_COPROC] = "COPROCESSOR PROTOCOL VIOLATION", - [VEC_FORMAT] = "FORMAT ERROR", - [VEC_UNINT] = "UNINITIALIZED INTERRUPT", - [VEC_RESV16] = "UNASSIGNED RESERVED 16", - [VEC_RESV17] = "UNASSIGNED RESERVED 17", - [VEC_RESV18] = "UNASSIGNED RESERVED 18", - [VEC_RESV19] = "UNASSIGNED RESERVED 19", - [VEC_RESV20] = "UNASSIGNED RESERVED 20", - [VEC_RESV21] = "UNASSIGNED RESERVED 21", - [VEC_RESV22] = "UNASSIGNED RESERVED 22", - [VEC_RESV23] = "UNASSIGNED RESERVED 23", - [VEC_SPUR] = "SPURIOUS INTERRUPT", - [VEC_INT1] = "LEVEL 1 INT", - [VEC_INT2] = "LEVEL 2 INT", - [VEC_INT3] = "LEVEL 3 INT", - [VEC_INT4] = "LEVEL 4 INT", - [VEC_INT5] = "LEVEL 5 INT", - [VEC_INT6] = "LEVEL 6 INT", - [VEC_INT7] = "LEVEL 7 INT", - [VEC_SYS] = "SYSCALL", - [VEC_TRAP1] = "TRAP #1", - [VEC_TRAP2] = "TRAP #2", - [VEC_TRAP3] = "TRAP #3", - [VEC_TRAP4] = "TRAP #4", - [VEC_TRAP5] = "TRAP #5", - [VEC_TRAP6] = "TRAP #6", - [VEC_TRAP7] = "TRAP #7", - [VEC_TRAP8] = "TRAP #8", - [VEC_TRAP9] = "TRAP #9", - [VEC_TRAP10] = "TRAP #10", - [VEC_TRAP11] = "TRAP #11", - [VEC_TRAP12] = "TRAP #12", - [VEC_TRAP13] = "TRAP #13", - [VEC_TRAP14] = "TRAP #14", - [VEC_TRAP15] = "TRAP #15", - [VEC_FPBRUC] = "FPCP BSUN", - [VEC_FPIR] = "FPCP INEXACT", - [VEC_FPDIVZ] = "FPCP DIV BY 0", - [VEC_FPUNDER] = "FPCP UNDERFLOW", - [VEC_FPOE] = "FPCP OPERAND ERROR", - [VEC_FPOVER] = "FPCP OVERFLOW", - [VEC_FPNAN] = "FPCP SNAN", - [VEC_FPUNSUP] = "FPCP UNSUPPORTED OPERATION", - [VEC_MMUCFG] = "MMU CONFIGURATION ERROR", - [VEC_MMUILL] = "MMU ILLEGAL OPERATION ERROR", - [VEC_MMUACC] = "MMU ACCESS LEVEL VIOLATION ERROR", - [VEC_RESV59] = "UNASSIGNED RESERVED 59", - [VEC_UNIMPEA] = "UNASSIGNED RESERVED 60", - [VEC_UNIMPII] = "UNASSIGNED RESERVED 61", - [VEC_RESV62] = "UNASSIGNED RESERVED 62", - [VEC_RESV63] = "UNASSIGNED RESERVED 63", -}; - -static const char *space_names[] = { - [0] = "Space 0", - [USER_DATA] = "User Data", - [USER_PROGRAM] = "User Program", -#ifndef CONFIG_SUN3 - [3] = "Space 3", +#ifdef CONFIG_MMU +#include "traps_mm.c" #else - [FC_CONTROL] = "Control", -#endif - [4] = "Space 4", - [SUPER_DATA] = "Super Data", - [SUPER_PROGRAM] = "Super Program", - [CPU_SPACE] = "CPU" -}; - -void die_if_kernel(char *,struct pt_regs *,int); -asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, - unsigned long error_code); -int send_fault_sig(struct pt_regs *regs); - -asmlinkage void trap_c(struct frame *fp); - -#if defined (CONFIG_M68060) -static inline void access_error060 (struct frame *fp) -{ - unsigned long fslw = fp->un.fmt4.pc; /* is really FSLW for access error */ - -#ifdef DEBUG - printk("fslw=%#lx, fa=%#lx\n", fslw, fp->un.fmt4.effaddr); -#endif - - if (fslw & MMU060_BPE) { - /* branch prediction error -> clear branch cache */ - __asm__ __volatile__ ("movec %/cacr,%/d0\n\t" - "orl #0x00400000,%/d0\n\t" - "movec %/d0,%/cacr" - : : : "d0" ); - /* return if there's no other error */ - if (!(fslw & MMU060_ERR_BITS) && !(fslw & MMU060_SEE)) - return; - } - - if (fslw & (MMU060_DESC_ERR | MMU060_WP | MMU060_SP)) { - unsigned long errorcode; - unsigned long addr = fp->un.fmt4.effaddr; - - if (fslw & MMU060_MA) - addr = (addr + PAGE_SIZE - 1) & PAGE_MASK; - - errorcode = 1; - if (fslw & MMU060_DESC_ERR) { - __flush_tlb040_one(addr); - errorcode = 0; - } - if (fslw & MMU060_W) - errorcode |= 2; -#ifdef DEBUG - printk("errorcode = %d\n", errorcode ); -#endif - do_page_fault(&fp->ptregs, addr, errorcode); - } else if (fslw & (MMU060_SEE)){ - /* Software Emulation Error. - * fault during mem_read/mem_write in ifpsp060/os.S - */ - send_fault_sig(&fp->ptregs); - } else if (!(fslw & (MMU060_RE|MMU060_WE)) || - send_fault_sig(&fp->ptregs) > 0) { - printk("pc=%#lx, fa=%#lx\n", fp->ptregs.pc, fp->un.fmt4.effaddr); - printk( "68060 access error, fslw=%lx\n", fslw ); - trap_c( fp ); - } -} -#endif /* CONFIG_M68060 */ - -#if defined (CONFIG_M68040) -static inline unsigned long probe040(int iswrite, unsigned long addr, int wbs) -{ - unsigned long mmusr; - mm_segment_t old_fs = get_fs(); - - set_fs(MAKE_MM_SEG(wbs)); - - if (iswrite) - asm volatile (".chip 68040; ptestw (%0); .chip 68k" : : "a" (addr)); - else - asm volatile (".chip 68040; ptestr (%0); .chip 68k" : : "a" (addr)); - - asm volatile (".chip 68040; movec %%mmusr,%0; .chip 68k" : "=r" (mmusr)); - - set_fs(old_fs); - - return mmusr; -} - -static inline int do_040writeback1(unsigned short wbs, unsigned long wba, - unsigned long wbd) -{ - int res = 0; - mm_segment_t old_fs = get_fs(); - - /* set_fs can not be moved, otherwise put_user() may oops */ - set_fs(MAKE_MM_SEG(wbs)); - - switch (wbs & WBSIZ_040) { - case BA_SIZE_BYTE: - res = put_user(wbd & 0xff, (char __user *)wba); - break; - case BA_SIZE_WORD: - res = put_user(wbd & 0xffff, (short __user *)wba); - break; - case BA_SIZE_LONG: - res = put_user(wbd, (int __user *)wba); - break; - } - - /* set_fs can not be moved, otherwise put_user() may oops */ - set_fs(old_fs); - - -#ifdef DEBUG - printk("do_040writeback1, res=%d\n",res); -#endif - - return res; -} - -/* after an exception in a writeback the stack frame corresponding - * to that exception is discarded, set a few bits in the old frame - * to simulate what it should look like - */ -static inline void fix_xframe040(struct frame *fp, unsigned long wba, unsigned short wbs) -{ - fp->un.fmt7.faddr = wba; - fp->un.fmt7.ssw = wbs & 0xff; - if (wba != current->thread.faddr) - fp->un.fmt7.ssw |= MA_040; -} - -static inline void do_040writebacks(struct frame *fp) -{ - int res = 0; -#if 0 - if (fp->un.fmt7.wb1s & WBV_040) - printk("access_error040: cannot handle 1st writeback. oops.\n"); -#endif - - if ((fp->un.fmt7.wb2s & WBV_040) && - !(fp->un.fmt7.wb2s & WBTT_040)) { - res = do_040writeback1(fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, - fp->un.fmt7.wb2d); - if (res) - fix_xframe040(fp, fp->un.fmt7.wb2a, fp->un.fmt7.wb2s); - else - fp->un.fmt7.wb2s = 0; - } - - /* do the 2nd wb only if the first one was successful (except for a kernel wb) */ - if (fp->un.fmt7.wb3s & WBV_040 && (!res || fp->un.fmt7.wb3s & 4)) { - res = do_040writeback1(fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, - fp->un.fmt7.wb3d); - if (res) - { - fix_xframe040(fp, fp->un.fmt7.wb3a, fp->un.fmt7.wb3s); - - fp->un.fmt7.wb2s = fp->un.fmt7.wb3s; - fp->un.fmt7.wb3s &= (~WBV_040); - fp->un.fmt7.wb2a = fp->un.fmt7.wb3a; - fp->un.fmt7.wb2d = fp->un.fmt7.wb3d; - } - else - fp->un.fmt7.wb3s = 0; - } - - if (res) - send_fault_sig(&fp->ptregs); -} - -/* - * called from sigreturn(), must ensure userspace code didn't - * manipulate exception frame to circumvent protection, then complete - * pending writebacks - * we just clear TM2 to turn it into a userspace access - */ -asmlinkage void berr_040cleanup(struct frame *fp) -{ - fp->un.fmt7.wb2s &= ~4; - fp->un.fmt7.wb3s &= ~4; - - do_040writebacks(fp); -} - -static inline void access_error040(struct frame *fp) -{ - unsigned short ssw = fp->un.fmt7.ssw; - unsigned long mmusr; - -#ifdef DEBUG - printk("ssw=%#x, fa=%#lx\n", ssw, fp->un.fmt7.faddr); - printk("wb1s=%#x, wb2s=%#x, wb3s=%#x\n", fp->un.fmt7.wb1s, - fp->un.fmt7.wb2s, fp->un.fmt7.wb3s); - printk ("wb2a=%lx, wb3a=%lx, wb2d=%lx, wb3d=%lx\n", - fp->un.fmt7.wb2a, fp->un.fmt7.wb3a, - fp->un.fmt7.wb2d, fp->un.fmt7.wb3d); -#endif - - if (ssw & ATC_040) { - unsigned long addr = fp->un.fmt7.faddr; - unsigned long errorcode; - - /* - * The MMU status has to be determined AFTER the address - * has been corrected if there was a misaligned access (MA). - */ - if (ssw & MA_040) - addr = (addr + 7) & -8; - - /* MMU error, get the MMUSR info for this access */ - mmusr = probe040(!(ssw & RW_040), addr, ssw); -#ifdef DEBUG - printk("mmusr = %lx\n", mmusr); -#endif - errorcode = 1; - if (!(mmusr & MMU_R_040)) { - /* clear the invalid atc entry */ - __flush_tlb040_one(addr); - errorcode = 0; - } - - /* despite what documentation seems to say, RMW - * accesses have always both the LK and RW bits set */ - if (!(ssw & RW_040) || (ssw & LK_040)) - errorcode |= 2; - - if (do_page_fault(&fp->ptregs, addr, errorcode)) { -#ifdef DEBUG - printk("do_page_fault() !=0\n"); -#endif - if (user_mode(&fp->ptregs)){ - /* delay writebacks after signal delivery */ -#ifdef DEBUG - printk(".. was usermode - return\n"); -#endif - return; - } - /* disable writeback into user space from kernel - * (if do_page_fault didn't fix the mapping, - * the writeback won't do good) - */ -disable_wb: -#ifdef DEBUG - printk(".. disabling wb2\n"); -#endif - if (fp->un.fmt7.wb2a == fp->un.fmt7.faddr) - fp->un.fmt7.wb2s &= ~WBV_040; - if (fp->un.fmt7.wb3a == fp->un.fmt7.faddr) - fp->un.fmt7.wb3s &= ~WBV_040; - } - } else { - /* In case of a bus error we either kill the process or expect - * the kernel to catch the fault, which then is also responsible - * for cleaning up the mess. - */ - current->thread.signo = SIGBUS; - current->thread.faddr = fp->un.fmt7.faddr; - if (send_fault_sig(&fp->ptregs) >= 0) - printk("68040 bus error (ssw=%x, faddr=%lx)\n", ssw, - fp->un.fmt7.faddr); - goto disable_wb; - } - - do_040writebacks(fp); -} -#endif /* CONFIG_M68040 */ - -#if defined(CONFIG_SUN3) -#include <asm/sun3mmu.h> - -extern int mmu_emu_handle_fault (unsigned long, int, int); - -/* sun3 version of bus_error030 */ - -static inline void bus_error030 (struct frame *fp) -{ - unsigned char buserr_type = sun3_get_buserr (); - unsigned long addr, errorcode; - unsigned short ssw = fp->un.fmtb.ssw; - extern unsigned long _sun3_map_test_start, _sun3_map_test_end; - -#ifdef DEBUG - if (ssw & (FC | FB)) - printk ("Instruction fault at %#010lx\n", - ssw & FC ? - fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2 - : - fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr); - if (ssw & DF) - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", - ssw & RW ? "read" : "write", - fp->un.fmtb.daddr, - space_names[ssw & DFC], fp->ptregs.pc); -#endif - - /* - * Check if this page should be demand-mapped. This needs to go before - * the testing for a bad kernel-space access (demand-mapping applies - * to kernel accesses too). - */ - - if ((ssw & DF) - && (buserr_type & (SUN3_BUSERR_PROTERR | SUN3_BUSERR_INVALID))) { - if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 0)) - return; - } - - /* Check for kernel-space pagefault (BAD). */ - if (fp->ptregs.sr & PS_S) { - /* kernel fault must be a data fault to user space */ - if (! ((ssw & DF) && ((ssw & DFC) == USER_DATA))) { - // try checking the kernel mappings before surrender - if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 1)) - return; - /* instruction fault or kernel data fault! */ - if (ssw & (FC | FB)) - printk ("Instruction fault at %#010lx\n", - fp->ptregs.pc); - if (ssw & DF) { - /* was this fault incurred testing bus mappings? */ - if((fp->ptregs.pc >= (unsigned long)&_sun3_map_test_start) && - (fp->ptregs.pc <= (unsigned long)&_sun3_map_test_end)) { - send_fault_sig(&fp->ptregs); - return; - } - - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", - ssw & RW ? "read" : "write", - fp->un.fmtb.daddr, - space_names[ssw & DFC], fp->ptregs.pc); - } - printk ("BAD KERNEL BUSERR\n"); - - die_if_kernel("Oops", &fp->ptregs,0); - force_sig(SIGKILL, current); - return; - } - } else { - /* user fault */ - if (!(ssw & (FC | FB)) && !(ssw & DF)) - /* not an instruction fault or data fault! BAD */ - panic ("USER BUSERR w/o instruction or data fault"); - } - - - /* First handle the data fault, if any. */ - if (ssw & DF) { - addr = fp->un.fmtb.daddr; - -// errorcode bit 0: 0 -> no page 1 -> protection fault -// errorcode bit 1: 0 -> read fault 1 -> write fault - -// (buserr_type & SUN3_BUSERR_PROTERR) -> protection fault -// (buserr_type & SUN3_BUSERR_INVALID) -> invalid page fault - - if (buserr_type & SUN3_BUSERR_PROTERR) - errorcode = 0x01; - else if (buserr_type & SUN3_BUSERR_INVALID) - errorcode = 0x00; - else { -#ifdef DEBUG - printk ("*** unexpected busfault type=%#04x\n", buserr_type); - printk ("invalid %s access at %#lx from pc %#lx\n", - !(ssw & RW) ? "write" : "read", addr, - fp->ptregs.pc); -#endif - die_if_kernel ("Oops", &fp->ptregs, buserr_type); - force_sig (SIGBUS, current); - return; - } - -//todo: wtf is RM bit? --m - if (!(ssw & RW) || ssw & RM) - errorcode |= 0x02; - - /* Handle page fault. */ - do_page_fault (&fp->ptregs, addr, errorcode); - - /* Retry the data fault now. */ - return; - } - - /* Now handle the instruction fault. */ - - /* Get the fault address. */ - if (fp->ptregs.format == 0xA) - addr = fp->ptregs.pc + 4; - else - addr = fp->un.fmtb.baddr; - if (ssw & FC) - addr -= 2; - - if (buserr_type & SUN3_BUSERR_INVALID) { - if (!mmu_emu_handle_fault (fp->un.fmtb.daddr, 1, 0)) - do_page_fault (&fp->ptregs, addr, 0); - } else { -#ifdef DEBUG - printk ("protection fault on insn access (segv).\n"); -#endif - force_sig (SIGSEGV, current); - } -} -#else -#if defined(CPU_M68020_OR_M68030) -static inline void bus_error030 (struct frame *fp) -{ - volatile unsigned short temp; - unsigned short mmusr; - unsigned long addr, errorcode; - unsigned short ssw = fp->un.fmtb.ssw; -#ifdef DEBUG - unsigned long desc; - - printk ("pid = %x ", current->pid); - printk ("SSW=%#06x ", ssw); - - if (ssw & (FC | FB)) - printk ("Instruction fault at %#010lx\n", - ssw & FC ? - fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2 - : - fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr); - if (ssw & DF) - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", - ssw & RW ? "read" : "write", - fp->un.fmtb.daddr, - space_names[ssw & DFC], fp->ptregs.pc); -#endif - - /* ++andreas: If a data fault and an instruction fault happen - at the same time map in both pages. */ - - /* First handle the data fault, if any. */ - if (ssw & DF) { - addr = fp->un.fmtb.daddr; - -#ifdef DEBUG - asm volatile ("ptestr %3,%2@,#7,%0\n\t" - "pmove %%psr,%1@" - : "=a&" (desc) - : "a" (&temp), "a" (addr), "d" (ssw)); -#else - asm volatile ("ptestr %2,%1@,#7\n\t" - "pmove %%psr,%0@" - : : "a" (&temp), "a" (addr), "d" (ssw)); -#endif - mmusr = temp; - -#ifdef DEBUG - printk("mmusr is %#x for addr %#lx in task %p\n", - mmusr, addr, current); - printk("descriptor address is %#lx, contents %#lx\n", - __va(desc), *(unsigned long *)__va(desc)); -#endif - - errorcode = (mmusr & MMU_I) ? 0 : 1; - if (!(ssw & RW) || (ssw & RM)) - errorcode |= 2; - - if (mmusr & (MMU_I | MMU_WP)) { - if (ssw & 4) { - printk("Data %s fault at %#010lx in %s (pc=%#lx)\n", - ssw & RW ? "read" : "write", - fp->un.fmtb.daddr, - space_names[ssw & DFC], fp->ptregs.pc); - goto buserr; - } - /* Don't try to do anything further if an exception was - handled. */ - if (do_page_fault (&fp->ptregs, addr, errorcode) < 0) - return; - } else if (!(mmusr & MMU_I)) { - /* probably a 020 cas fault */ - if (!(ssw & RM) && send_fault_sig(&fp->ptregs) > 0) - printk("unexpected bus error (%#x,%#x)\n", ssw, mmusr); - } else if (mmusr & (MMU_B|MMU_L|MMU_S)) { - printk("invalid %s access at %#lx from pc %#lx\n", - !(ssw & RW) ? "write" : "read", addr, - fp->ptregs.pc); - die_if_kernel("Oops",&fp->ptregs,mmusr); - force_sig(SIGSEGV, current); - return; - } else { -#if 0 - static volatile long tlong; -#endif - - printk("weird %s access at %#lx from pc %#lx (ssw is %#x)\n", - !(ssw & RW) ? "write" : "read", addr, - fp->ptregs.pc, ssw); - asm volatile ("ptestr #1,%1@,#0\n\t" - "pmove %%psr,%0@" - : /* no outputs */ - : "a" (&temp), "a" (addr)); - mmusr = temp; - - printk ("level 0 mmusr is %#x\n", mmusr); -#if 0 - asm volatile ("pmove %%tt0,%0@" - : /* no outputs */ - : "a" (&tlong)); - printk("tt0 is %#lx, ", tlong); - asm volatile ("pmove %%tt1,%0@" - : /* no outputs */ - : "a" (&tlong)); - printk("tt1 is %#lx\n", tlong); -#endif -#ifdef DEBUG - printk("Unknown SIGSEGV - 1\n"); -#endif - die_if_kernel("Oops",&fp->ptregs,mmusr); - force_sig(SIGSEGV, current); - return; - } - - /* setup an ATC entry for the access about to be retried */ - if (!(ssw & RW) || (ssw & RM)) - asm volatile ("ploadw %1,%0@" : /* no outputs */ - : "a" (addr), "d" (ssw)); - else - asm volatile ("ploadr %1,%0@" : /* no outputs */ - : "a" (addr), "d" (ssw)); - } - - /* Now handle the instruction fault. */ - - if (!(ssw & (FC|FB))) - return; - - if (fp->ptregs.sr & PS_S) { - printk("Instruction fault at %#010lx\n", - fp->ptregs.pc); - buserr: - printk ("BAD KERNEL BUSERR\n"); - die_if_kernel("Oops",&fp->ptregs,0); - force_sig(SIGKILL, current); - return; - } - - /* get the fault address */ - if (fp->ptregs.format == 10) - addr = fp->ptregs.pc + 4; - else - addr = fp->un.fmtb.baddr; - if (ssw & FC) - addr -= 2; - - if ((ssw & DF) && ((addr ^ fp->un.fmtb.daddr) & PAGE_MASK) == 0) - /* Insn fault on same page as data fault. But we - should still create the ATC entry. */ - goto create_atc_entry; - -#ifdef DEBUG - asm volatile ("ptestr #1,%2@,#7,%0\n\t" - "pmove %%psr,%1@" - : "=a&" (desc) - : "a" (&temp), "a" (addr)); -#else - asm volatile ("ptestr #1,%1@,#7\n\t" - "pmove %%psr,%0@" - : : "a" (&temp), "a" (addr)); -#endif - mmusr = temp; - -#ifdef DEBUG - printk ("mmusr is %#x for addr %#lx in task %p\n", - mmusr, addr, current); - printk ("descriptor address is %#lx, contents %#lx\n", - __va(desc), *(unsigned long *)__va(desc)); -#endif - - if (mmusr & MMU_I) - do_page_fault (&fp->ptregs, addr, 0); - else if (mmusr & (MMU_B|MMU_L|MMU_S)) { - printk ("invalid insn access at %#lx from pc %#lx\n", - addr, fp->ptregs.pc); -#ifdef DEBUG - printk("Unknown SIGSEGV - 2\n"); -#endif - die_if_kernel("Oops",&fp->ptregs,mmusr); - force_sig(SIGSEGV, current); - return; - } - -create_atc_entry: - /* setup an ATC entry for the access about to be retried */ - asm volatile ("ploadr #2,%0@" : /* no outputs */ - : "a" (addr)); -} -#endif /* CPU_M68020_OR_M68030 */ -#endif /* !CONFIG_SUN3 */ - -asmlinkage void buserr_c(struct frame *fp) -{ - /* Only set esp0 if coming from user mode */ - if (user_mode(&fp->ptregs)) - current->thread.esp0 = (unsigned long) fp; - -#ifdef DEBUG - printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format); -#endif - - switch (fp->ptregs.format) { -#if defined (CONFIG_M68060) - case 4: /* 68060 access error */ - access_error060 (fp); - break; -#endif -#if defined (CONFIG_M68040) - case 0x7: /* 68040 access error */ - access_error040 (fp); - break; -#endif -#if defined (CPU_M68020_OR_M68030) - case 0xa: - case 0xb: - bus_error030 (fp); - break; -#endif - default: - die_if_kernel("bad frame format",&fp->ptregs,0); -#ifdef DEBUG - printk("Unknown SIGSEGV - 4\n"); -#endif - force_sig(SIGSEGV, current); - } -} - - -static int kstack_depth_to_print = 48; - -void show_trace(unsigned long *stack) -{ - unsigned long *endstack; - unsigned long addr; - int i; - - printk("Call Trace:"); - addr = (unsigned long)stack + THREAD_SIZE - 1; - endstack = (unsigned long *)(addr & -THREAD_SIZE); - i = 0; - while (stack + 1 <= endstack) { - addr = *stack++; - /* - * If the address is either in the text segment of the - * kernel, or in the region which contains vmalloc'ed - * memory, it *may* be the address of a calling - * routine; if so, print it so that someone tracing - * down the cause of the crash will be able to figure - * out the call path that was taken. - */ - if (__kernel_text_address(addr)) { -#ifndef CONFIG_KALLSYMS - if (i % 5 == 0) - printk("\n "); -#endif - printk(" [<%08lx>] %pS\n", addr, (void *)addr); - i++; - } - } - printk("\n"); -} - -void show_registers(struct pt_regs *regs) -{ - struct frame *fp = (struct frame *)regs; - mm_segment_t old_fs = get_fs(); - u16 c, *cp; - unsigned long addr; - int i; - - print_modules(); - printk("PC: [<%08lx>] %pS\n", regs->pc, (void *)regs->pc); - printk("SR: %04x SP: %p a2: %08lx\n", regs->sr, regs, regs->a2); - printk("d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n", - regs->d0, regs->d1, regs->d2, regs->d3); - printk("d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n", - regs->d4, regs->d5, regs->a0, regs->a1); - - printk("Process %s (pid: %d, task=%p)\n", - current->comm, task_pid_nr(current), current); - addr = (unsigned long)&fp->un; - printk("Frame format=%X ", regs->format); - switch (regs->format) { - case 0x2: - printk("instr addr=%08lx\n", fp->un.fmt2.iaddr); - addr += sizeof(fp->un.fmt2); - break; - case 0x3: - printk("eff addr=%08lx\n", fp->un.fmt3.effaddr); - addr += sizeof(fp->un.fmt3); - break; - case 0x4: - printk((CPU_IS_060 ? "fault addr=%08lx fslw=%08lx\n" - : "eff addr=%08lx pc=%08lx\n"), - fp->un.fmt4.effaddr, fp->un.fmt4.pc); - addr += sizeof(fp->un.fmt4); - break; - case 0x7: - printk("eff addr=%08lx ssw=%04x faddr=%08lx\n", - fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr); - printk("wb 1 stat/addr/data: %04x %08lx %08lx\n", - fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0); - printk("wb 2 stat/addr/data: %04x %08lx %08lx\n", - fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d); - printk("wb 3 stat/addr/data: %04x %08lx %08lx\n", - fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d); - printk("push data: %08lx %08lx %08lx %08lx\n", - fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2, - fp->un.fmt7.pd3); - addr += sizeof(fp->un.fmt7); - break; - case 0x9: - printk("instr addr=%08lx\n", fp->un.fmt9.iaddr); - addr += sizeof(fp->un.fmt9); - break; - case 0xa: - printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", - fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb, - fp->un.fmta.daddr, fp->un.fmta.dobuf); - addr += sizeof(fp->un.fmta); - break; - case 0xb: - printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", - fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb, - fp->un.fmtb.daddr, fp->un.fmtb.dobuf); - printk("baddr=%08lx dibuf=%08lx ver=%x\n", - fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver); - addr += sizeof(fp->un.fmtb); - break; - default: - printk("\n"); - } - show_stack(NULL, (unsigned long *)addr); - - printk("Code:"); - set_fs(KERNEL_DS); - cp = (u16 *)regs->pc; - for (i = -8; i < 16; i++) { - if (get_user(c, cp + i) && i >= 0) { - printk(" Bad PC value."); - break; - } - printk(i ? " %04x" : " <%04x>", c); - } - set_fs(old_fs); - printk ("\n"); -} - -void show_stack(struct task_struct *task, unsigned long *stack) -{ - unsigned long *p; - unsigned long *endstack; - int i; - - if (!stack) { - if (task) - stack = (unsigned long *)task->thread.esp0; - else - stack = (unsigned long *)&stack; - } - endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) & -THREAD_SIZE); - - printk("Stack from %08lx:", (unsigned long)stack); - p = stack; - for (i = 0; i < kstack_depth_to_print; i++) { - if (p + 1 > endstack) - break; - if (i % 8 == 0) - printk("\n "); - printk(" %08lx", *p++); - } - printk("\n"); - show_trace(stack); -} - -/* - * The architecture-independent backtrace generator - */ -void dump_stack(void) -{ - unsigned long stack; - - show_trace(&stack); -} - -EXPORT_SYMBOL(dump_stack); - -void bad_super_trap (struct frame *fp) -{ - console_verbose(); - if (fp->ptregs.vector < 4 * ARRAY_SIZE(vec_names)) - printk ("*** %s *** FORMAT=%X\n", - vec_names[(fp->ptregs.vector) >> 2], - fp->ptregs.format); - else - printk ("*** Exception %d *** FORMAT=%X\n", - (fp->ptregs.vector) >> 2, - fp->ptregs.format); - if (fp->ptregs.vector >> 2 == VEC_ADDRERR && CPU_IS_020_OR_030) { - unsigned short ssw = fp->un.fmtb.ssw; - - printk ("SSW=%#06x ", ssw); - - if (ssw & RC) - printk ("Pipe stage C instruction fault at %#010lx\n", - (fp->ptregs.format) == 0xA ? - fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2); - if (ssw & RB) - printk ("Pipe stage B instruction fault at %#010lx\n", - (fp->ptregs.format) == 0xA ? - fp->ptregs.pc + 4 : fp->un.fmtb.baddr); - if (ssw & DF) - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", - ssw & RW ? "read" : "write", - fp->un.fmtb.daddr, space_names[ssw & DFC], - fp->ptregs.pc); - } - printk ("Current process id is %d\n", task_pid_nr(current)); - die_if_kernel("BAD KERNEL TRAP", &fp->ptregs, 0); -} - -asmlinkage void trap_c(struct frame *fp) -{ - int sig; - siginfo_t info; - - if (fp->ptregs.sr & PS_S) { - if (fp->ptregs.vector == VEC_TRACE << 2) { - /* traced a trapping instruction on a 68020/30, - * real exception will be executed afterwards. - */ - } else if (!handle_kernel_fault(&fp->ptregs)) - bad_super_trap(fp); - return; - } - - /* send the appropriate signal to the user program */ - switch ((fp->ptregs.vector) >> 2) { - case VEC_ADDRERR: - info.si_code = BUS_ADRALN; - sig = SIGBUS; - break; - case VEC_ILLEGAL: - case VEC_LINE10: - case VEC_LINE11: - info.si_code = ILL_ILLOPC; - sig = SIGILL; - break; - case VEC_PRIV: - info.si_code = ILL_PRVOPC; - sig = SIGILL; - break; - case VEC_COPROC: - info.si_code = ILL_COPROC; - sig = SIGILL; - break; - case VEC_TRAP1: - case VEC_TRAP2: - case VEC_TRAP3: - case VEC_TRAP4: - case VEC_TRAP5: - case VEC_TRAP6: - case VEC_TRAP7: - case VEC_TRAP8: - case VEC_TRAP9: - case VEC_TRAP10: - case VEC_TRAP11: - case VEC_TRAP12: - case VEC_TRAP13: - case VEC_TRAP14: - info.si_code = ILL_ILLTRP; - sig = SIGILL; - break; - case VEC_FPBRUC: - case VEC_FPOE: - case VEC_FPNAN: - info.si_code = FPE_FLTINV; - sig = SIGFPE; - break; - case VEC_FPIR: - info.si_code = FPE_FLTRES; - sig = SIGFPE; - break; - case VEC_FPDIVZ: - info.si_code = FPE_FLTDIV; - sig = SIGFPE; - break; - case VEC_FPUNDER: - info.si_code = FPE_FLTUND; - sig = SIGFPE; - break; - case VEC_FPOVER: - info.si_code = FPE_FLTOVF; - sig = SIGFPE; - break; - case VEC_ZERODIV: - info.si_code = FPE_INTDIV; - sig = SIGFPE; - break; - case VEC_CHK: - case VEC_TRAP: - info.si_code = FPE_INTOVF; - sig = SIGFPE; - break; - case VEC_TRACE: /* ptrace single step */ - info.si_code = TRAP_TRACE; - sig = SIGTRAP; - break; - case VEC_TRAP15: /* breakpoint */ - info.si_code = TRAP_BRKPT; - sig = SIGTRAP; - break; - default: - info.si_code = ILL_ILLOPC; - sig = SIGILL; - break; - } - info.si_signo = sig; - info.si_errno = 0; - switch (fp->ptregs.format) { - default: - info.si_addr = (void *) fp->ptregs.pc; - break; - case 2: - info.si_addr = (void *) fp->un.fmt2.iaddr; - break; - case 7: - info.si_addr = (void *) fp->un.fmt7.effaddr; - break; - case 9: - info.si_addr = (void *) fp->un.fmt9.iaddr; - break; - case 10: - info.si_addr = (void *) fp->un.fmta.daddr; - break; - case 11: - info.si_addr = (void *) fp->un.fmtb.daddr; - break; - } - force_sig_info (sig, &info, current); -} - -void die_if_kernel (char *str, struct pt_regs *fp, int nr) -{ - if (!(fp->sr & PS_S)) - return; - - console_verbose(); - printk("%s: %08x\n",str,nr); - show_registers(fp); - add_taint(TAINT_DIE); - do_exit(SIGSEGV); -} - -/* - * This function is called if an error occur while accessing - * user-space from the fpsp040 code. - */ -asmlinkage void fpsp040_die(void) -{ - do_exit(SIGSEGV); -} - -#ifdef CONFIG_M68KFPU_EMU -asmlinkage void fpemu_signal(int signal, int code, void *addr) -{ - siginfo_t info; - - info.si_signo = signal; - info.si_errno = 0; - info.si_code = code; - info.si_addr = addr; - force_sig_info(signal, &info, current); -} +#include "traps_no.c" #endif diff --git a/arch/m68k/kernel/traps_mm.c b/arch/m68k/kernel/traps_mm.c new file mode 100644 index 0000000..4022bbc --- /dev/null +++ b/arch/m68k/kernel/traps_mm.c @@ -0,0 +1,1207 @@ +/* + * linux/arch/m68k/kernel/traps.c + * + * Copyright (C) 1993, 1994 by Hamish Macdonald + * + * 68040 fixes by Michael Rausch + * 68040 fixes by Martin Apel + * 68040 fixes and writeback by Richard Zidlicky + * 68060 fixes by Roman Hodek + * 68060 fixes by Jesper Skov + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/* + * Sets up all exception vectors + */ + +#include <linux/sched.h> +#include <linux/signal.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/user.h> +#include <linux/string.h> +#include <linux/linkage.h> +#include <linux/init.h> +#include <linux/ptrace.h> +#include <linux/kallsyms.h> + +#include <asm/setup.h> +#include <asm/fpu.h> +#include <asm/system.h> +#include <asm/uaccess.h> +#include <asm/traps.h> +#include <asm/pgalloc.h> +#include <asm/machdep.h> +#include <asm/siginfo.h> + +/* assembler routines */ +asmlinkage void system_call(void); +asmlinkage void buserr(void); +asmlinkage void trap(void); +asmlinkage void nmihandler(void); +#ifdef CONFIG_M68KFPU_EMU +asmlinkage void fpu_emu(void); +#endif + +e_vector vectors[256]; + +/* nmi handler for the Amiga */ +asm(".text\n" + __ALIGN_STR "\n" + "nmihandler: rte"); + +/* + * this must be called very early as the kernel might + * use some instruction that are emulated on the 060 + * and so we're prepared for early probe attempts (e.g. nf_init). + */ +void __init base_trap_init(void) +{ + if (MACH_IS_SUN3X) { + extern e_vector *sun3x_prom_vbr; + + __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr)); + } + + /* setup the exception vector table */ + __asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors)); + + if (CPU_IS_060) { + /* set up ISP entry points */ + asmlinkage void unimp_vec(void) asm ("_060_isp_unimp"); + + vectors[VEC_UNIMPII] = unimp_vec; + } + + vectors[VEC_BUSERR] = buserr; + vectors[VEC_ILLEGAL] = trap; + vectors[VEC_SYS] = system_call; +} + +void __init trap_init (void) +{ + int i; + + for (i = VEC_SPUR; i <= VEC_INT7; i++) + vectors[i] = bad_inthandler; + + for (i = 0; i < VEC_USER; i++) + if (!vectors[i]) + vectors[i] = trap; + + for (i = VEC_USER; i < 256; i++) + vectors[i] = bad_inthandler; + +#ifdef CONFIG_M68KFPU_EMU + if (FPU_IS_EMU) + vectors[VEC_LINE11] = fpu_emu; +#endif + + if (CPU_IS_040 && !FPU_IS_EMU) { + /* set up FPSP entry points */ + asmlinkage void dz_vec(void) asm ("dz"); + asmlinkage void inex_vec(void) asm ("inex"); + asmlinkage void ovfl_vec(void) asm ("ovfl"); + asmlinkage void unfl_vec(void) asm ("unfl"); + asmlinkage void snan_vec(void) asm ("snan"); + asmlinkage void operr_vec(void) asm ("operr"); + asmlinkage void bsun_vec(void) asm ("bsun"); + asmlinkage void fline_vec(void) asm ("fline"); + asmlinkage void unsupp_vec(void) asm ("unsupp"); + + vectors[VEC_FPDIVZ] = dz_vec; + vectors[VEC_FPIR] = inex_vec; + vectors[VEC_FPOVER] = ovfl_vec; + vectors[VEC_FPUNDER] = unfl_vec; + vectors[VEC_FPNAN] = snan_vec; + vectors[VEC_FPOE] = operr_vec; + vectors[VEC_FPBRUC] = bsun_vec; + vectors[VEC_LINE11] = fline_vec; + vectors[VEC_FPUNSUP] = unsupp_vec; + } + + if (CPU_IS_060 && !FPU_IS_EMU) { + /* set up IFPSP entry points */ + asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan"); + asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr"); + asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl"); + asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl"); + asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz"); + asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex"); + asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline"); + asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp"); + asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd"); + + vectors[VEC_FPNAN] = snan_vec6; + vectors[VEC_FPOE] = operr_vec6; + vectors[VEC_FPOVER] = ovfl_vec6; + vectors[VEC_FPUNDER] = unfl_vec6; + vectors[VEC_FPDIVZ] = dz_vec6; + vectors[VEC_FPIR] = inex_vec6; + vectors[VEC_LINE11] = fline_vec6; + vectors[VEC_FPUNSUP] = unsupp_vec6; + vectors[VEC_UNIMPEA] = effadd_vec6; + } + + /* if running on an amiga, make the NMI interrupt do nothing */ + if (MACH_IS_AMIGA) { + vectors[VEC_INT7] = nmihandler; + } +} + + +static const char *vec_names[] = { + [VEC_RESETSP] = "RESET SP", + [VEC_RESETPC] = "RESET PC", + [VEC_BUSERR] = "BUS ERROR", + [VEC_ADDRERR] = "ADDRESS ERROR", + [VEC_ILLEGAL] = "ILLEGAL INSTRUCTION", + [VEC_ZERODIV] = "ZERO DIVIDE", + [VEC_CHK] = "CHK", + [VEC_TRAP] = "TRAPcc", + [VEC_PRIV] = "PRIVILEGE VIOLATION", + [VEC_TRACE] = "TRACE", + [VEC_LINE10] = "LINE 1010", + [VEC_LINE11] = "LINE 1111", + [VEC_RESV12] = "UNASSIGNED RESERVED 12", + [VEC_COPROC] = "COPROCESSOR PROTOCOL VIOLATION", + [VEC_FORMAT] = "FORMAT ERROR", + [VEC_UNINT] = "UNINITIALIZED INTERRUPT", + [VEC_RESV16] = "UNASSIGNED RESERVED 16", + [VEC_RESV17] = "UNASSIGNED RESERVED 17", + [VEC_RESV18] = "UNASSIGNED RESERVED 18", + [VEC_RESV19] = "UNASSIGNED RESERVED 19", + [VEC_RESV20] = "UNASSIGNED RESERVED 20", + [VEC_RESV21] = "UNASSIGNED RESERVED 21", + [VEC_RESV22] = "UNASSIGNED RESERVED 22", + [VEC_RESV23] = "UNASSIGNED RESERVED 23", + [VEC_SPUR] = "SPURIOUS INTERRUPT", + [VEC_INT1] = "LEVEL 1 INT", + [VEC_INT2] = "LEVEL 2 INT", + [VEC_INT3] = "LEVEL 3 INT", + [VEC_INT4] = "LEVEL 4 INT", + [VEC_INT5] = "LEVEL 5 INT", + [VEC_INT6] = "LEVEL 6 INT", + [VEC_INT7] = "LEVEL 7 INT", + [VEC_SYS] = "SYSCALL", + [VEC_TRAP1] = "TRAP #1", + [VEC_TRAP2] = "TRAP #2", + [VEC_TRAP3] = "TRAP #3", + [VEC_TRAP4] = "TRAP #4", + [VEC_TRAP5] = "TRAP #5", + [VEC_TRAP6] = "TRAP #6", + [VEC_TRAP7] = "TRAP #7", + [VEC_TRAP8] = "TRAP #8", + [VEC_TRAP9] = "TRAP #9", + [VEC_TRAP10] = "TRAP #10", + [VEC_TRAP11] = "TRAP #11", + [VEC_TRAP12] = "TRAP #12", + [VEC_TRAP13] = "TRAP #13", + [VEC_TRAP14] = "TRAP #14", + [VEC_TRAP15] = "TRAP #15", + [VEC_FPBRUC] = "FPCP BSUN", + [VEC_FPIR] = "FPCP INEXACT", + [VEC_FPDIVZ] = "FPCP DIV BY 0", + [VEC_FPUNDER] = "FPCP UNDERFLOW", + [VEC_FPOE] = "FPCP OPERAND ERROR", + [VEC_FPOVER] = "FPCP OVERFLOW", + [VEC_FPNAN] = "FPCP SNAN", + [VEC_FPUNSUP] = "FPCP UNSUPPORTED OPERATION", + [VEC_MMUCFG] = "MMU CONFIGURATION ERROR", + [VEC_MMUILL] = "MMU ILLEGAL OPERATION ERROR", + [VEC_MMUACC] = "MMU ACCESS LEVEL VIOLATION ERROR", + [VEC_RESV59] = "UNASSIGNED RESERVED 59", + [VEC_UNIMPEA] = "UNASSIGNED RESERVED 60", + [VEC_UNIMPII] = "UNASSIGNED RESERVED 61", + [VEC_RESV62] = "UNASSIGNED RESERVED 62", + [VEC_RESV63] = "UNASSIGNED RESERVED 63", +}; + +static const char *space_names[] = { + [0] = "Space 0", + [USER_DATA] = "User Data", + [USER_PROGRAM] = "User Program", +#ifndef CONFIG_SUN3 + [3] = "Space 3", +#else + [FC_CONTROL] = "Control", +#endif + [4] = "Space 4", + [SUPER_DATA] = "Super Data", + [SUPER_PROGRAM] = "Super Program", + [CPU_SPACE] = "CPU" +}; + +void die_if_kernel(char *,struct pt_regs *,int); +asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, + unsigned long error_code); +int send_fault_sig(struct pt_regs *regs); + +asmlinkage void trap_c(struct frame *fp); + +#if defined (CONFIG_M68060) +static inline void access_error060 (struct frame *fp) +{ + unsigned long fslw = fp->un.fmt4.pc; /* is really FSLW for access error */ + +#ifdef DEBUG + printk("fslw=%#lx, fa=%#lx\n", fslw, fp->un.fmt4.effaddr); +#endif + + if (fslw & MMU060_BPE) { + /* branch prediction error -> clear branch cache */ + __asm__ __volatile__ ("movec %/cacr,%/d0\n\t" + "orl #0x00400000,%/d0\n\t" + "movec %/d0,%/cacr" + : : : "d0" ); + /* return if there's no other error */ + if (!(fslw & MMU060_ERR_BITS) && !(fslw & MMU060_SEE)) + return; + } + + if (fslw & (MMU060_DESC_ERR | MMU060_WP | MMU060_SP)) { + unsigned long errorcode; + unsigned long addr = fp->un.fmt4.effaddr; + + if (fslw & MMU060_MA) + addr = (addr + PAGE_SIZE - 1) & PAGE_MASK; + + errorcode = 1; + if (fslw & MMU060_DESC_ERR) { + __flush_tlb040_one(addr); + errorcode = 0; + } + if (fslw & MMU060_W) + errorcode |= 2; +#ifdef DEBUG + printk("errorcode = %d\n", errorcode ); +#endif + do_page_fault(&fp->ptregs, addr, errorcode); + } else if (fslw & (MMU060_SEE)){ + /* Software Emulation Error. + * fault during mem_read/mem_write in ifpsp060/os.S + */ + send_fault_sig(&fp->ptregs); + } else if (!(fslw & (MMU060_RE|MMU060_WE)) || + send_fault_sig(&fp->ptregs) > 0) { + printk("pc=%#lx, fa=%#lx\n", fp->ptregs.pc, fp->un.fmt4.effaddr); + printk( "68060 access error, fslw=%lx\n", fslw ); + trap_c( fp ); + } +} +#endif /* CONFIG_M68060 */ + +#if defined (CONFIG_M68040) +static inline unsigned long probe040(int iswrite, unsigned long addr, int wbs) +{ + unsigned long mmusr; + mm_segment_t old_fs = get_fs(); + + set_fs(MAKE_MM_SEG(wbs)); + + if (iswrite) + asm volatile (".chip 68040; ptestw (%0); .chip 68k" : : "a" (addr)); + else + asm volatile (".chip 68040; ptestr (%0); .chip 68k" : : "a" (addr)); + + asm volatile (".chip 68040; movec %%mmusr,%0; .chip 68k" : "=r" (mmusr)); + + set_fs(old_fs); + + return mmusr; +} + +static inline int do_040writeback1(unsigned short wbs, unsigned long wba, + unsigned long wbd) +{ + int res = 0; + mm_segment_t old_fs = get_fs(); + + /* set_fs can not be moved, otherwise put_user() may oops */ + set_fs(MAKE_MM_SEG(wbs)); + + switch (wbs & WBSIZ_040) { + case BA_SIZE_BYTE: + res = put_user(wbd & 0xff, (char __user *)wba); + break; + case BA_SIZE_WORD: + res = put_user(wbd & 0xffff, (short __user *)wba); + break; + case BA_SIZE_LONG: + res = put_user(wbd, (int __user *)wba); + break; + } + + /* set_fs can not be moved, otherwise put_user() may oops */ + set_fs(old_fs); + + +#ifdef DEBUG + printk("do_040writeback1, res=%d\n",res); +#endif + + return res; +} + +/* after an exception in a writeback the stack frame corresponding + * to that exception is discarded, set a few bits in the old frame + * to simulate what it should look like + */ +static inline void fix_xframe040(struct frame *fp, unsigned long wba, unsigned short wbs) +{ + fp->un.fmt7.faddr = wba; + fp->un.fmt7.ssw = wbs & 0xff; + if (wba != current->thread.faddr) + fp->un.fmt7.ssw |= MA_040; +} + +static inline void do_040writebacks(struct frame *fp) +{ + int res = 0; +#if 0 + if (fp->un.fmt7.wb1s & WBV_040) + printk("access_error040: cannot handle 1st writeback. oops.\n"); +#endif + + if ((fp->un.fmt7.wb2s & WBV_040) && + !(fp->un.fmt7.wb2s & WBTT_040)) { + res = do_040writeback1(fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, + fp->un.fmt7.wb2d); + if (res) + fix_xframe040(fp, fp->un.fmt7.wb2a, fp->un.fmt7.wb2s); + else + fp->un.fmt7.wb2s = 0; + } + + /* do the 2nd wb only if the first one was successful (except for a kernel wb) */ + if (fp->un.fmt7.wb3s & WBV_040 && (!res || fp->un.fmt7.wb3s & 4)) { + res = do_040writeback1(fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, + fp->un.fmt7.wb3d); + if (res) + { + fix_xframe040(fp, fp->un.fmt7.wb3a, fp->un.fmt7.wb3s); + + fp->un.fmt7.wb2s = fp->un.fmt7.wb3s; + fp->un.fmt7.wb3s &= (~WBV_040); + fp->un.fmt7.wb2a = fp->un.fmt7.wb3a; + fp->un.fmt7.wb2d = fp->un.fmt7.wb3d; + } + else + fp->un.fmt7.wb3s = 0; + } + + if (res) + send_fault_sig(&fp->ptregs); +} + +/* + * called from sigreturn(), must ensure userspace code didn't + * manipulate exception frame to circumvent protection, then complete + * pending writebacks + * we just clear TM2 to turn it into a userspace access + */ +asmlinkage void berr_040cleanup(struct frame *fp) +{ + fp->un.fmt7.wb2s &= ~4; + fp->un.fmt7.wb3s &= ~4; + + do_040writebacks(fp); +} + +static inline void access_error040(struct frame *fp) +{ + unsigned short ssw = fp->un.fmt7.ssw; + unsigned long mmusr; + +#ifdef DEBUG + printk("ssw=%#x, fa=%#lx\n", ssw, fp->un.fmt7.faddr); + printk("wb1s=%#x, wb2s=%#x, wb3s=%#x\n", fp->un.fmt7.wb1s, + fp->un.fmt7.wb2s, fp->un.fmt7.wb3s); + printk ("wb2a=%lx, wb3a=%lx, wb2d=%lx, wb3d=%lx\n", + fp->un.fmt7.wb2a, fp->un.fmt7.wb3a, + fp->un.fmt7.wb2d, fp->un.fmt7.wb3d); +#endif + + if (ssw & ATC_040) { + unsigned long addr = fp->un.fmt7.faddr; + unsigned long errorcode; + + /* + * The MMU status has to be determined AFTER the address + * has been corrected if there was a misaligned access (MA). + */ + if (ssw & MA_040) + addr = (addr + 7) & -8; + + /* MMU error, get the MMUSR info for this access */ + mmusr = probe040(!(ssw & RW_040), addr, ssw); +#ifdef DEBUG + printk("mmusr = %lx\n", mmusr); +#endif + errorcode = 1; + if (!(mmusr & MMU_R_040)) { + /* clear the invalid atc entry */ + __flush_tlb040_one(addr); + errorcode = 0; + } + + /* despite what documentation seems to say, RMW + * accesses have always both the LK and RW bits set */ + if (!(ssw & RW_040) || (ssw & LK_040)) + errorcode |= 2; + + if (do_page_fault(&fp->ptregs, addr, errorcode)) { +#ifdef DEBUG + printk("do_page_fault() !=0\n"); +#endif + if (user_mode(&fp->ptregs)){ + /* delay writebacks after signal delivery */ +#ifdef DEBUG + printk(".. was usermode - return\n"); +#endif + return; + } + /* disable writeback into user space from kernel + * (if do_page_fault didn't fix the mapping, + * the writeback won't do good) + */ +disable_wb: +#ifdef DEBUG + printk(".. disabling wb2\n"); +#endif + if (fp->un.fmt7.wb2a == fp->un.fmt7.faddr) + fp->un.fmt7.wb2s &= ~WBV_040; + if (fp->un.fmt7.wb3a == fp->un.fmt7.faddr) + fp->un.fmt7.wb3s &= ~WBV_040; + } + } else { + /* In case of a bus error we either kill the process or expect + * the kernel to catch the fault, which then is also responsible + * for cleaning up the mess. + */ + current->thread.signo = SIGBUS; + current->thread.faddr = fp->un.fmt7.faddr; + if (send_fault_sig(&fp->ptregs) >= 0) + printk("68040 bus error (ssw=%x, faddr=%lx)\n", ssw, + fp->un.fmt7.faddr); + goto disable_wb; + } + + do_040writebacks(fp); +} +#endif /* CONFIG_M68040 */ + +#if defined(CONFIG_SUN3) +#include <asm/sun3mmu.h> + +extern int mmu_emu_handle_fault (unsigned long, int, int); + +/* sun3 version of bus_error030 */ + +static inline void bus_error030 (struct frame *fp) +{ + unsigned char buserr_type = sun3_get_buserr (); + unsigned long addr, errorcode; + unsigned short ssw = fp->un.fmtb.ssw; + extern unsigned long _sun3_map_test_start, _sun3_map_test_end; + +#ifdef DEBUG + if (ssw & (FC | FB)) + printk ("Instruction fault at %#010lx\n", + ssw & FC ? + fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2 + : + fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr); + if (ssw & DF) + printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + ssw & RW ? "read" : "write", + fp->un.fmtb.daddr, + space_names[ssw & DFC], fp->ptregs.pc); +#endif + + /* + * Check if this page should be demand-mapped. This needs to go before + * the testing for a bad kernel-space access (demand-mapping applies + * to kernel accesses too). + */ + + if ((ssw & DF) + && (buserr_type & (SUN3_BUSERR_PROTERR | SUN3_BUSERR_INVALID))) { + if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 0)) + return; + } + + /* Check for kernel-space pagefault (BAD). */ + if (fp->ptregs.sr & PS_S) { + /* kernel fault must be a data fault to user space */ + if (! ((ssw & DF) && ((ssw & DFC) == USER_DATA))) { + // try checking the kernel mappings before surrender + if (mmu_emu_handle_fault (fp->un.fmtb.daddr, ssw & RW, 1)) + return; + /* instruction fault or kernel data fault! */ + if (ssw & (FC | FB)) + printk ("Instruction fault at %#010lx\n", + fp->ptregs.pc); + if (ssw & DF) { + /* was this fault incurred testing bus mappings? */ + if((fp->ptregs.pc >= (unsigned long)&_sun3_map_test_start) && + (fp->ptregs.pc <= (unsigned long)&_sun3_map_test_end)) { + send_fault_sig(&fp->ptregs); + return; + } + + printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + ssw & RW ? "read" : "write", + fp->un.fmtb.daddr, + space_names[ssw & DFC], fp->ptregs.pc); + } + printk ("BAD KERNEL BUSERR\n"); + + die_if_kernel("Oops", &fp->ptregs,0); + force_sig(SIGKILL, current); + return; + } + } else { + /* user fault */ + if (!(ssw & (FC | FB)) && !(ssw & DF)) + /* not an instruction fault or data fault! BAD */ + panic ("USER BUSERR w/o instruction or data fault"); + } + + + /* First handle the data fault, if any. */ + if (ssw & DF) { + addr = fp->un.fmtb.daddr; + +// errorcode bit 0: 0 -> no page 1 -> protection fault +// errorcode bit 1: 0 -> read fault 1 -> write fault + +// (buserr_type & SUN3_BUSERR_PROTERR) -> protection fault +// (buserr_type & SUN3_BUSERR_INVALID) -> invalid page fault + + if (buserr_type & SUN3_BUSERR_PROTERR) + errorcode = 0x01; + else if (buserr_type & SUN3_BUSERR_INVALID) + errorcode = 0x00; + else { +#ifdef DEBUG + printk ("*** unexpected busfault type=%#04x\n", buserr_type); + printk ("invalid %s access at %#lx from pc %#lx\n", + !(ssw & RW) ? "write" : "read", addr, + fp->ptregs.pc); +#endif + die_if_kernel ("Oops", &fp->ptregs, buserr_type); + force_sig (SIGBUS, current); + return; + } + +//todo: wtf is RM bit? --m + if (!(ssw & RW) || ssw & RM) + errorcode |= 0x02; + + /* Handle page fault. */ + do_page_fault (&fp->ptregs, addr, errorcode); + + /* Retry the data fault now. */ + return; + } + + /* Now handle the instruction fault. */ + + /* Get the fault address. */ + if (fp->ptregs.format == 0xA) + addr = fp->ptregs.pc + 4; + else + addr = fp->un.fmtb.baddr; + if (ssw & FC) + addr -= 2; + + if (buserr_type & SUN3_BUSERR_INVALID) { + if (!mmu_emu_handle_fault (fp->un.fmtb.daddr, 1, 0)) + do_page_fault (&fp->ptregs, addr, 0); + } else { +#ifdef DEBUG + printk ("protection fault on insn access (segv).\n"); +#endif + force_sig (SIGSEGV, current); + } +} +#else +#if defined(CPU_M68020_OR_M68030) +static inline void bus_error030 (struct frame *fp) +{ + volatile unsigned short temp; + unsigned short mmusr; + unsigned long addr, errorcode; + unsigned short ssw = fp->un.fmtb.ssw; +#ifdef DEBUG + unsigned long desc; + + printk ("pid = %x ", current->pid); + printk ("SSW=%#06x ", ssw); + + if (ssw & (FC | FB)) + printk ("Instruction fault at %#010lx\n", + ssw & FC ? + fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2 + : + fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr); + if (ssw & DF) + printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + ssw & RW ? "read" : "write", + fp->un.fmtb.daddr, + space_names[ssw & DFC], fp->ptregs.pc); +#endif + + /* ++andreas: If a data fault and an instruction fault happen + at the same time map in both pages. */ + + /* First handle the data fault, if any. */ + if (ssw & DF) { + addr = fp->un.fmtb.daddr; + +#ifdef DEBUG + asm volatile ("ptestr %3,%2@,#7,%0\n\t" + "pmove %%psr,%1@" + : "=a&" (desc) + : "a" (&temp), "a" (addr), "d" (ssw)); +#else + asm volatile ("ptestr %2,%1@,#7\n\t" + "pmove %%psr,%0@" + : : "a" (&temp), "a" (addr), "d" (ssw)); +#endif + mmusr = temp; + +#ifdef DEBUG + printk("mmusr is %#x for addr %#lx in task %p\n", + mmusr, addr, current); + printk("descriptor address is %#lx, contents %#lx\n", + __va(desc), *(unsigned long *)__va(desc)); +#endif + + errorcode = (mmusr & MMU_I) ? 0 : 1; + if (!(ssw & RW) || (ssw & RM)) + errorcode |= 2; + + if (mmusr & (MMU_I | MMU_WP)) { + if (ssw & 4) { + printk("Data %s fault at %#010lx in %s (pc=%#lx)\n", + ssw & RW ? "read" : "write", + fp->un.fmtb.daddr, + space_names[ssw & DFC], fp->ptregs.pc); + goto buserr; + } + /* Don't try to do anything further if an exception was + handled. */ + if (do_page_fault (&fp->ptregs, addr, errorcode) < 0) + return; + } else if (!(mmusr & MMU_I)) { + /* probably a 020 cas fault */ + if (!(ssw & RM) && send_fault_sig(&fp->ptregs) > 0) + printk("unexpected bus error (%#x,%#x)\n", ssw, mmusr); + } else if (mmusr & (MMU_B|MMU_L|MMU_S)) { + printk("invalid %s access at %#lx from pc %#lx\n", + !(ssw & RW) ? "write" : "read", addr, + fp->ptregs.pc); + die_if_kernel("Oops",&fp->ptregs,mmusr); + force_sig(SIGSEGV, current); + return; + } else { +#if 0 + static volatile long tlong; +#endif + + printk("weird %s access at %#lx from pc %#lx (ssw is %#x)\n", + !(ssw & RW) ? "write" : "read", addr, + fp->ptregs.pc, ssw); + asm volatile ("ptestr #1,%1@,#0\n\t" + "pmove %%psr,%0@" + : /* no outputs */ + : "a" (&temp), "a" (addr)); + mmusr = temp; + + printk ("level 0 mmusr is %#x\n", mmusr); +#if 0 + asm volatile ("pmove %%tt0,%0@" + : /* no outputs */ + : "a" (&tlong)); + printk("tt0 is %#lx, ", tlong); + asm volatile ("pmove %%tt1,%0@" + : /* no outputs */ + : "a" (&tlong)); + printk("tt1 is %#lx\n", tlong); +#endif +#ifdef DEBUG + printk("Unknown SIGSEGV - 1\n"); +#endif + die_if_kernel("Oops",&fp->ptregs,mmusr); + force_sig(SIGSEGV, current); + return; + } + + /* setup an ATC entry for the access about to be retried */ + if (!(ssw & RW) || (ssw & RM)) + asm volatile ("ploadw %1,%0@" : /* no outputs */ + : "a" (addr), "d" (ssw)); + else + asm volatile ("ploadr %1,%0@" : /* no outputs */ + : "a" (addr), "d" (ssw)); + } + + /* Now handle the instruction fault. */ + + if (!(ssw & (FC|FB))) + return; + + if (fp->ptregs.sr & PS_S) { + printk("Instruction fault at %#010lx\n", + fp->ptregs.pc); + buserr: + printk ("BAD KERNEL BUSERR\n"); + die_if_kernel("Oops",&fp->ptregs,0); + force_sig(SIGKILL, current); + return; + } + + /* get the fault address */ + if (fp->ptregs.format == 10) + addr = fp->ptregs.pc + 4; + else + addr = fp->un.fmtb.baddr; + if (ssw & FC) + addr -= 2; + + if ((ssw & DF) && ((addr ^ fp->un.fmtb.daddr) & PAGE_MASK) == 0) + /* Insn fault on same page as data fault. But we + should still create the ATC entry. */ + goto create_atc_entry; + +#ifdef DEBUG + asm volatile ("ptestr #1,%2@,#7,%0\n\t" + "pmove %%psr,%1@" + : "=a&" (desc) + : "a" (&temp), "a" (addr)); +#else + asm volatile ("ptestr #1,%1@,#7\n\t" + "pmove %%psr,%0@" + : : "a" (&temp), "a" (addr)); +#endif + mmusr = temp; + +#ifdef DEBUG + printk ("mmusr is %#x for addr %#lx in task %p\n", + mmusr, addr, current); + printk ("descriptor address is %#lx, contents %#lx\n", + __va(desc), *(unsigned long *)__va(desc)); +#endif + + if (mmusr & MMU_I) + do_page_fault (&fp->ptregs, addr, 0); + else if (mmusr & (MMU_B|MMU_L|MMU_S)) { + printk ("invalid insn access at %#lx from pc %#lx\n", + addr, fp->ptregs.pc); +#ifdef DEBUG + printk("Unknown SIGSEGV - 2\n"); +#endif + die_if_kernel("Oops",&fp->ptregs,mmusr); + force_sig(SIGSEGV, current); + return; + } + +create_atc_entry: + /* setup an ATC entry for the access about to be retried */ + asm volatile ("ploadr #2,%0@" : /* no outputs */ + : "a" (addr)); +} +#endif /* CPU_M68020_OR_M68030 */ +#endif /* !CONFIG_SUN3 */ + +asmlinkage void buserr_c(struct frame *fp) +{ + /* Only set esp0 if coming from user mode */ + if (user_mode(&fp->ptregs)) + current->thread.esp0 = (unsigned long) fp; + +#ifdef DEBUG + printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format); +#endif + + switch (fp->ptregs.format) { +#if defined (CONFIG_M68060) + case 4: /* 68060 access error */ + access_error060 (fp); + break; +#endif +#if defined (CONFIG_M68040) + case 0x7: /* 68040 access error */ + access_error040 (fp); + break; +#endif +#if defined (CPU_M68020_OR_M68030) + case 0xa: + case 0xb: + bus_error030 (fp); + break; +#endif + default: + die_if_kernel("bad frame format",&fp->ptregs,0); +#ifdef DEBUG + printk("Unknown SIGSEGV - 4\n"); +#endif + force_sig(SIGSEGV, current); + } +} + + +static int kstack_depth_to_print = 48; + +void show_trace(unsigned long *stack) +{ + unsigned long *endstack; + unsigned long addr; + int i; + + printk("Call Trace:"); + addr = (unsigned long)stack + THREAD_SIZE - 1; + endstack = (unsigned long *)(addr & -THREAD_SIZE); + i = 0; + while (stack + 1 <= endstack) { + addr = *stack++; + /* + * If the address is either in the text segment of the + * kernel, or in the region which contains vmalloc'ed + * memory, it *may* be the address of a calling + * routine; if so, print it so that someone tracing + * down the cause of the crash will be able to figure + * out the call path that was taken. + */ + if (__kernel_text_address(addr)) { +#ifndef CONFIG_KALLSYMS + if (i % 5 == 0) + printk("\n "); +#endif + printk(" [<%08lx>] %pS\n", addr, (void *)addr); + i++; + } + } + printk("\n"); +} + +void show_registers(struct pt_regs *regs) +{ + struct frame *fp = (struct frame *)regs; + mm_segment_t old_fs = get_fs(); + u16 c, *cp; + unsigned long addr; + int i; + + print_modules(); + printk("PC: [<%08lx>] %pS\n", regs->pc, (void *)regs->pc); + printk("SR: %04x SP: %p a2: %08lx\n", regs->sr, regs, regs->a2); + printk("d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n", + regs->d0, regs->d1, regs->d2, regs->d3); + printk("d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n", + regs->d4, regs->d5, regs->a0, regs->a1); + + printk("Process %s (pid: %d, task=%p)\n", + current->comm, task_pid_nr(current), current); + addr = (unsigned long)&fp->un; + printk("Frame format=%X ", regs->format); + switch (regs->format) { + case 0x2: + printk("instr addr=%08lx\n", fp->un.fmt2.iaddr); + addr += sizeof(fp->un.fmt2); + break; + case 0x3: + printk("eff addr=%08lx\n", fp->un.fmt3.effaddr); + addr += sizeof(fp->un.fmt3); + break; + case 0x4: + printk((CPU_IS_060 ? "fault addr=%08lx fslw=%08lx\n" + : "eff addr=%08lx pc=%08lx\n"), + fp->un.fmt4.effaddr, fp->un.fmt4.pc); + addr += sizeof(fp->un.fmt4); + break; + case 0x7: + printk("eff addr=%08lx ssw=%04x faddr=%08lx\n", + fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr); + printk("wb 1 stat/addr/data: %04x %08lx %08lx\n", + fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0); + printk("wb 2 stat/addr/data: %04x %08lx %08lx\n", + fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d); + printk("wb 3 stat/addr/data: %04x %08lx %08lx\n", + fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d); + printk("push data: %08lx %08lx %08lx %08lx\n", + fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2, + fp->un.fmt7.pd3); + addr += sizeof(fp->un.fmt7); + break; + case 0x9: + printk("instr addr=%08lx\n", fp->un.fmt9.iaddr); + addr += sizeof(fp->un.fmt9); + break; + case 0xa: + printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", + fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb, + fp->un.fmta.daddr, fp->un.fmta.dobuf); + addr += sizeof(fp->un.fmta); + break; + case 0xb: + printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", + fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb, + fp->un.fmtb.daddr, fp->un.fmtb.dobuf); + printk("baddr=%08lx dibuf=%08lx ver=%x\n", + fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver); + addr += sizeof(fp->un.fmtb); + break; + default: + printk("\n"); + } + show_stack(NULL, (unsigned long *)addr); + + printk("Code:"); + set_fs(KERNEL_DS); + cp = (u16 *)regs->pc; + for (i = -8; i < 16; i++) { + if (get_user(c, cp + i) && i >= 0) { + printk(" Bad PC value."); + break; + } + printk(i ? " %04x" : " <%04x>", c); + } + set_fs(old_fs); + printk ("\n"); +} + +void show_stack(struct task_struct *task, unsigned long *stack) +{ + unsigned long *p; + unsigned long *endstack; + int i; + + if (!stack) { + if (task) + stack = (unsigned long *)task->thread.esp0; + else + stack = (unsigned long *)&stack; + } + endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) & -THREAD_SIZE); + + printk("Stack from %08lx:", (unsigned long)stack); + p = stack; + for (i = 0; i < kstack_depth_to_print; i++) { + if (p + 1 > endstack) + break; + if (i % 8 == 0) + printk("\n "); + printk(" %08lx", *p++); + } + printk("\n"); + show_trace(stack); +} + +/* + * The architecture-independent backtrace generator + */ +void dump_stack(void) +{ + unsigned long stack; + + show_trace(&stack); +} + +EXPORT_SYMBOL(dump_stack); + +void bad_super_trap (struct frame *fp) +{ + console_verbose(); + if (fp->ptregs.vector < 4 * ARRAY_SIZE(vec_names)) + printk ("*** %s *** FORMAT=%X\n", + vec_names[(fp->ptregs.vector) >> 2], + fp->ptregs.format); + else + printk ("*** Exception %d *** FORMAT=%X\n", + (fp->ptregs.vector) >> 2, + fp->ptregs.format); + if (fp->ptregs.vector >> 2 == VEC_ADDRERR && CPU_IS_020_OR_030) { + unsigned short ssw = fp->un.fmtb.ssw; + + printk ("SSW=%#06x ", ssw); + + if (ssw & RC) + printk ("Pipe stage C instruction fault at %#010lx\n", + (fp->ptregs.format) == 0xA ? + fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2); + if (ssw & RB) + printk ("Pipe stage B instruction fault at %#010lx\n", + (fp->ptregs.format) == 0xA ? + fp->ptregs.pc + 4 : fp->un.fmtb.baddr); + if (ssw & DF) + printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + ssw & RW ? "read" : "write", + fp->un.fmtb.daddr, space_names[ssw & DFC], + fp->ptregs.pc); + } + printk ("Current process id is %d\n", task_pid_nr(current)); + die_if_kernel("BAD KERNEL TRAP", &fp->ptregs, 0); +} + +asmlinkage void trap_c(struct frame *fp) +{ + int sig; + siginfo_t info; + + if (fp->ptregs.sr & PS_S) { + if (fp->ptregs.vector == VEC_TRACE << 2) { + /* traced a trapping instruction on a 68020/30, + * real exception will be executed afterwards. + */ + } else if (!handle_kernel_fault(&fp->ptregs)) + bad_super_trap(fp); + return; + } + + /* send the appropriate signal to the user program */ + switch ((fp->ptregs.vector) >> 2) { + case VEC_ADDRERR: + info.si_code = BUS_ADRALN; + sig = SIGBUS; + break; + case VEC_ILLEGAL: + case VEC_LINE10: + case VEC_LINE11: + info.si_code = ILL_ILLOPC; + sig = SIGILL; + break; + case VEC_PRIV: + info.si_code = ILL_PRVOPC; + sig = SIGILL; + break; + case VEC_COPROC: + info.si_code = ILL_COPROC; + sig = SIGILL; + break; + case VEC_TRAP1: + case VEC_TRAP2: + case VEC_TRAP3: + case VEC_TRAP4: + case VEC_TRAP5: + case VEC_TRAP6: + case VEC_TRAP7: + case VEC_TRAP8: + case VEC_TRAP9: + case VEC_TRAP10: + case VEC_TRAP11: + case VEC_TRAP12: + case VEC_TRAP13: + case VEC_TRAP14: + info.si_code = ILL_ILLTRP; + sig = SIGILL; + break; + case VEC_FPBRUC: + case VEC_FPOE: + case VEC_FPNAN: + info.si_code = FPE_FLTINV; + sig = SIGFPE; + break; + case VEC_FPIR: + info.si_code = FPE_FLTRES; + sig = SIGFPE; + break; + case VEC_FPDIVZ: + info.si_code = FPE_FLTDIV; + sig = SIGFPE; + break; + case VEC_FPUNDER: + info.si_code = FPE_FLTUND; + sig = SIGFPE; + break; + case VEC_FPOVER: + info.si_code = FPE_FLTOVF; + sig = SIGFPE; + break; + case VEC_ZERODIV: + info.si_code = FPE_INTDIV; + sig = SIGFPE; + break; + case VEC_CHK: + case VEC_TRAP: + info.si_code = FPE_INTOVF; + sig = SIGFPE; + break; + case VEC_TRACE: /* ptrace single step */ + info.si_code = TRAP_TRACE; + sig = SIGTRAP; + break; + case VEC_TRAP15: /* breakpoint */ + info.si_code = TRAP_BRKPT; + sig = SIGTRAP; + break; + default: + info.si_code = ILL_ILLOPC; + sig = SIGILL; + break; + } + info.si_signo = sig; + info.si_errno = 0; + switch (fp->ptregs.format) { + default: + info.si_addr = (void *) fp->ptregs.pc; + break; + case 2: + info.si_addr = (void *) fp->un.fmt2.iaddr; + break; + case 7: + info.si_addr = (void *) fp->un.fmt7.effaddr; + break; + case 9: + info.si_addr = (void *) fp->un.fmt9.iaddr; + break; + case 10: + info.si_addr = (void *) fp->un.fmta.daddr; + break; + case 11: + info.si_addr = (void *) fp->un.fmtb.daddr; + break; + } + force_sig_info (sig, &info, current); +} + +void die_if_kernel (char *str, struct pt_regs *fp, int nr) +{ + if (!(fp->sr & PS_S)) + return; + + console_verbose(); + printk("%s: %08x\n",str,nr); + show_registers(fp); + add_taint(TAINT_DIE); + do_exit(SIGSEGV); +} + +/* + * This function is called if an error occur while accessing + * user-space from the fpsp040 code. + */ +asmlinkage void fpsp040_die(void) +{ + do_exit(SIGSEGV); +} + +#ifdef CONFIG_M68KFPU_EMU +asmlinkage void fpemu_signal(int signal, int code, void *addr) +{ + siginfo_t info; + + info.si_signo = signal; + info.si_errno = 0; + info.si_code = code; + info.si_addr = addr; + force_sig_info(signal, &info, current); +} +#endif diff --git a/arch/m68k/kernel/traps_no.c b/arch/m68k/kernel/traps_no.c new file mode 100644 index 0000000..a768008 --- /dev/null +++ b/arch/m68k/kernel/traps_no.c @@ -0,0 +1,365 @@ +/* + * linux/arch/m68knommu/kernel/traps.c + * + * Copyright (C) 1993, 1994 by Hamish Macdonald + * + * 68040 fixes by Michael Rausch + * 68040 fixes by Martin Apel + * 68060 fixes by Roman Hodek + * 68060 fixes by Jesper Skov + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/* + * Sets up all exception vectors + */ +#include <linux/sched.h> +#include <linux/signal.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/user.h> +#include <linux/string.h> +#include <linux/linkage.h> +#include <linux/init.h> +#include <linux/ptrace.h> +#include <linux/kallsyms.h> + +#include <asm/setup.h> +#include <asm/fpu.h> +#include <asm/system.h> +#include <asm/uaccess.h> +#include <asm/traps.h> +#include <asm/pgtable.h> +#include <asm/machdep.h> +#include <asm/siginfo.h> + +static char const * const vec_names[] = { + "RESET SP", "RESET PC", "BUS ERROR", "ADDRESS ERROR", + "ILLEGAL INSTRUCTION", "ZERO DIVIDE", "CHK", "TRAPcc", + "PRIVILEGE VIOLATION", "TRACE", "LINE 1010", "LINE 1111", + "UNASSIGNED RESERVED 12", "COPROCESSOR PROTOCOL VIOLATION", + "FORMAT ERROR", "UNINITIALIZED INTERRUPT", + "UNASSIGNED RESERVED 16", "UNASSIGNED RESERVED 17", + "UNASSIGNED RESERVED 18", "UNASSIGNED RESERVED 19", + "UNASSIGNED RESERVED 20", "UNASSIGNED RESERVED 21", + "UNASSIGNED RESERVED 22", "UNASSIGNED RESERVED 23", + "SPURIOUS INTERRUPT", "LEVEL 1 INT", "LEVEL 2 INT", "LEVEL 3 INT", + "LEVEL 4 INT", "LEVEL 5 INT", "LEVEL 6 INT", "LEVEL 7 INT", + "SYSCALL", "TRAP #1", "TRAP #2", "TRAP #3", + "TRAP #4", "TRAP #5", "TRAP #6", "TRAP #7", + "TRAP #8", "TRAP #9", "TRAP #10", "TRAP #11", + "TRAP #12", "TRAP #13", "TRAP #14", "TRAP #15", + "FPCP BSUN", "FPCP INEXACT", "FPCP DIV BY 0", "FPCP UNDERFLOW", + "FPCP OPERAND ERROR", "FPCP OVERFLOW", "FPCP SNAN", + "FPCP UNSUPPORTED OPERATION", + "MMU CONFIGURATION ERROR" +}; + +void __init trap_init(void) +{ +} + +void die_if_kernel(char *str, struct pt_regs *fp, int nr) +{ + if (!(fp->sr & PS_S)) + return; + + console_verbose(); + printk(KERN_EMERG "%s: %08x\n",str,nr); + printk(KERN_EMERG "PC: [<%08lx>]\nSR: %04x SP: %p a2: %08lx\n", + fp->pc, fp->sr, fp, fp->a2); + printk(KERN_EMERG "d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n", + fp->d0, fp->d1, fp->d2, fp->d3); + printk(KERN_EMERG "d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n", + fp->d4, fp->d5, fp->a0, fp->a1); + + printk(KERN_EMERG "Process %s (pid: %d, stackpage=%08lx)\n", + current->comm, current->pid, PAGE_SIZE+(unsigned long)current); + show_stack(NULL, (unsigned long *)(fp + 1)); + add_taint(TAINT_DIE); + do_exit(SIGSEGV); +} + +asmlinkage void buserr_c(struct frame *fp) +{ + /* Only set esp0 if coming from user mode */ + if (user_mode(&fp->ptregs)) + current->thread.esp0 = (unsigned long) fp; + +#if defined(DEBUG) + printk (KERN_DEBUG "*** Bus Error *** Format is %x\n", fp->ptregs.format); +#endif + + die_if_kernel("bad frame format",&fp->ptregs,0); +#if defined(DEBUG) + printk(KERN_DEBUG "Unknown SIGSEGV - 4\n"); +#endif + force_sig(SIGSEGV, current); +} + +static void print_this_address(unsigned long addr, int i) +{ +#ifdef CONFIG_KALLSYMS + printk(KERN_EMERG " [%08lx] ", addr); + print_symbol(KERN_CONT "%s\n", addr); +#else + if (i % 5) + printk(KERN_CONT " [%08lx] ", addr); + else + printk(KERN_EMERG " [%08lx] ", addr); + i++; +#endif +} + +int kstack_depth_to_print = 48; + +static void __show_stack(struct task_struct *task, unsigned long *stack) +{ + unsigned long *endstack, addr; +#ifdef CONFIG_FRAME_POINTER + unsigned long *last_stack; +#endif + int i; + + if (!stack) + stack = (unsigned long *)task->thread.ksp; + + addr = (unsigned long) stack; + endstack = (unsigned long *) PAGE_ALIGN(addr); + + printk(KERN_EMERG "Stack from %08lx:", (unsigned long)stack); + for (i = 0; i < kstack_depth_to_print; i++) { + if (stack + 1 + i > endstack) + break; + if (i % 8 == 0) + printk(KERN_EMERG " "); + printk(KERN_CONT " %08lx", *(stack + i)); + } + printk("\n"); + i = 0; + +#ifdef CONFIG_FRAME_POINTER + printk(KERN_EMERG "Call Trace:\n"); + + last_stack = stack - 1; + while (stack <= endstack && stack > last_stack) { + + addr = *(stack + 1); + print_this_address(addr, i); + i++; + + last_stack = stack; + stack = (unsigned long *)*stack; + } + printk("\n"); +#else + printk(KERN_EMERG "Call Trace with CONFIG_FRAME_POINTER disabled:\n"); + while (stack <= endstack) { + addr = *stack++; + /* + * If the address is either in the text segment of the kernel, + * or in a region which is occupied by a module then it *may* + * be the address of a calling routine; if so, print it so that + * someone tracing down the cause of the crash will be able to + * figure out the call path that was taken. + */ + if (__kernel_text_address(addr)) { + print_this_address(addr, i); + i++; + } + } + printk(KERN_CONT "\n"); +#endif +} + +void bad_super_trap(struct frame *fp) +{ + int vector = (fp->ptregs.vector >> 2) & 0xff; + + console_verbose(); + if (vector < ARRAY_SIZE(vec_names)) + printk (KERN_WARNING "*** %s *** FORMAT=%X\n", + vec_names[vector], + fp->ptregs.format); + else + printk (KERN_WARNING "*** Exception %d *** FORMAT=%X\n", + vector, + fp->ptregs.format); + printk (KERN_WARNING "Current process id is %d\n", current->pid); + die_if_kernel("BAD KERNEL TRAP", &fp->ptregs, 0); +} + +asmlinkage void trap_c(struct frame *fp) +{ + int sig; + int vector = (fp->ptregs.vector >> 2) & 0xff; + siginfo_t info; + + if (fp->ptregs.sr & PS_S) { + if (vector == VEC_TRACE) { + /* traced a trapping instruction */ + } else + bad_super_trap(fp); + return; + } + + /* send the appropriate signal to the user program */ + switch (vector) { + case VEC_ADDRERR: + info.si_code = BUS_ADRALN; + sig = SIGBUS; + break; + case VEC_ILLEGAL: + case VEC_LINE10: + case VEC_LINE11: + info.si_code = ILL_ILLOPC; + sig = SIGILL; + break; + case VEC_PRIV: + info.si_code = ILL_PRVOPC; + sig = SIGILL; + break; + case VEC_COPROC: + info.si_code = ILL_COPROC; + sig = SIGILL; + break; + case VEC_TRAP1: /* gdbserver breakpoint */ + fp->ptregs.pc -= 2; + info.si_code = TRAP_TRACE; + sig = SIGTRAP; + break; + case VEC_TRAP2: + case VEC_TRAP3: + case VEC_TRAP4: + case VEC_TRAP5: + case VEC_TRAP6: + case VEC_TRAP7: + case VEC_TRAP8: + case VEC_TRAP9: + case VEC_TRAP10: + case VEC_TRAP11: + case VEC_TRAP12: + case VEC_TRAP13: + case VEC_TRAP14: + info.si_code = ILL_ILLTRP; + sig = SIGILL; + break; + case VEC_FPBRUC: + case VEC_FPOE: + case VEC_FPNAN: + info.si_code = FPE_FLTINV; + sig = SIGFPE; + break; + case VEC_FPIR: + info.si_code = FPE_FLTRES; + sig = SIGFPE; + break; + case VEC_FPDIVZ: + info.si_code = FPE_FLTDIV; + sig = SIGFPE; + break; + case VEC_FPUNDER: + info.si_code = FPE_FLTUND; + sig = SIGFPE; + break; + case VEC_FPOVER: + info.si_code = FPE_FLTOVF; + sig = SIGFPE; + break; + case VEC_ZERODIV: + info.si_code = FPE_INTDIV; + sig = SIGFPE; + break; + case VEC_CHK: + case VEC_TRAP: + info.si_code = FPE_INTOVF; + sig = SIGFPE; + break; + case VEC_TRACE: /* ptrace single step */ + info.si_code = TRAP_TRACE; + sig = SIGTRAP; + break; + case VEC_TRAP15: /* breakpoint */ + info.si_code = TRAP_BRKPT; + sig = SIGTRAP; + break; + default: + info.si_code = ILL_ILLOPC; + sig = SIGILL; + break; + } + info.si_signo = sig; + info.si_errno = 0; + switch (fp->ptregs.format) { + default: + info.si_addr = (void *) fp->ptregs.pc; + break; + case 2: + info.si_addr = (void *) fp->un.fmt2.iaddr; + break; + case 7: + info.si_addr = (void *) fp->un.fmt7.effaddr; + break; + case 9: + info.si_addr = (void *) fp->un.fmt9.iaddr; + break; + case 10: + info.si_addr = (void *) fp->un.fmta.daddr; + break; + case 11: + info.si_addr = (void *) fp->un.fmtb.daddr; + break; + } + force_sig_info (sig, &info, current); +} + +asmlinkage void set_esp0(unsigned long ssp) +{ + current->thread.esp0 = ssp; +} + +/* + * The architecture-independent backtrace generator + */ +void dump_stack(void) +{ + /* + * We need frame pointers for this little trick, which works as follows: + * + * +------------+ 0x00 + * | Next SP | -> 0x0c + * +------------+ 0x04 + * | Caller | + * +------------+ 0x08 + * | Local vars | -> our stack var + * +------------+ 0x0c + * | Next SP | -> 0x18, that is what we pass to show_stack() + * +------------+ 0x10 + * | Caller | + * +------------+ 0x14 + * | Local vars | + * +------------+ 0x18 + * | ... | + * +------------+ + */ + + unsigned long *stack; + + stack = (unsigned long *)&stack; + stack++; + __show_stack(current, stack); +} +EXPORT_SYMBOL(dump_stack); + +void show_stack(struct task_struct *task, unsigned long *stack) +{ + if (!stack && !task) + dump_stack(); + else + __show_stack(task, stack); +} diff --git a/arch/m68k/kernel/vmlinux.lds.S b/arch/m68k/kernel/vmlinux.lds.S index 99ba315..030dabf 100644 --- a/arch/m68k/kernel/vmlinux.lds.S +++ b/arch/m68k/kernel/vmlinux.lds.S @@ -1,10 +1,5 @@ -PHDRS -{ - text PT_LOAD FILEHDR PHDRS FLAGS (7); - data PT_LOAD FLAGS (7); -} -#ifdef CONFIG_SUN3 -#include "vmlinux-sun3.lds" +#ifdef CONFIG_MMU +#include "vmlinux.lds_mm.S" #else -#include "vmlinux-std.lds" +#include "vmlinux.lds_no.S" #endif diff --git a/arch/m68k/kernel/vmlinux.lds_mm.S b/arch/m68k/kernel/vmlinux.lds_mm.S new file mode 100644 index 0000000..99ba315 --- /dev/null +++ b/arch/m68k/kernel/vmlinux.lds_mm.S @@ -0,0 +1,10 @@ +PHDRS +{ + text PT_LOAD FILEHDR PHDRS FLAGS (7); + data PT_LOAD FLAGS (7); +} +#ifdef CONFIG_SUN3 +#include "vmlinux-sun3.lds" +#else +#include "vmlinux-std.lds" +#endif diff --git a/arch/m68k/kernel/vmlinux.lds_no.S b/arch/m68k/kernel/vmlinux.lds_no.S new file mode 100644 index 0000000..47e15eb --- /dev/null +++ b/arch/m68k/kernel/vmlinux.lds_no.S @@ -0,0 +1,188 @@ +/* + * vmlinux.lds.S -- master linker script for m68knommu arch + * + * (C) Copyright 2002-2006, Greg Ungerer <gerg@snapgear.com> + * + * This linker script is equiped to build either ROM loaded or RAM + * run kernels. + */ + +#include <asm-generic/vmlinux.lds.h> +#include <asm/page.h> +#include <asm/thread_info.h> + +#if defined(CONFIG_RAMKERNEL) +#define RAM_START CONFIG_KERNELBASE +#define RAM_LENGTH (CONFIG_RAMBASE + CONFIG_RAMSIZE - CONFIG_KERNELBASE) +#define TEXT ram +#define DATA ram +#define INIT ram +#define BSSS ram +#endif +#if defined(CONFIG_ROMKERNEL) || defined(CONFIG_HIMEMKERNEL) +#define RAM_START CONFIG_RAMBASE +#define RAM_LENGTH CONFIG_RAMSIZE +#define ROMVEC_START CONFIG_ROMVEC +#define ROMVEC_LENGTH CONFIG_ROMVECSIZE +#define ROM_START CONFIG_ROMSTART +#define ROM_LENGTH CONFIG_ROMSIZE +#define TEXT rom +#define DATA ram +#define INIT ram +#define BSSS ram +#endif + +#ifndef DATA_ADDR +#define DATA_ADDR +#endif + + +OUTPUT_ARCH(m68k) +ENTRY(_start) + +MEMORY { + ram : ORIGIN = RAM_START, LENGTH = RAM_LENGTH +#ifdef ROM_START + romvec : ORIGIN = ROMVEC_START, LENGTH = ROMVEC_LENGTH + rom : ORIGIN = ROM_START, LENGTH = ROM_LENGTH +#endif +} + +jiffies = jiffies_64 + 4; + +SECTIONS { + +#ifdef ROMVEC_START + . = ROMVEC_START ; + .romvec : { + __rom_start = . ; + _romvec = .; + *(.data..initvect) + } > romvec +#endif + + .text : { + _text = .; + _stext = . ; + HEAD_TEXT + TEXT_TEXT + SCHED_TEXT + LOCK_TEXT + *(.text..lock) + + . = ALIGN(16); /* Exception table */ + __start___ex_table = .; + *(__ex_table) + __stop___ex_table = .; + + *(.rodata) *(.rodata.*) + *(__vermagic) /* Kernel version magic */ + *(__markers_strings) + *(.rodata1) + *(.rodata.str1.1) + + /* Kernel symbol table: Normal symbols */ + . = ALIGN(4); + __start___ksymtab = .; + *(__ksymtab) + __stop___ksymtab = .; + + /* Kernel symbol table: GPL-only symbols */ + __start___ksymtab_gpl = .; + *(__ksymtab_gpl) + __stop___ksymtab_gpl = .; + + /* Kernel symbol table: Normal unused symbols */ + __start___ksymtab_unused = .; + *(__ksymtab_unused) + __stop___ksymtab_unused = .; + + /* Kernel symbol table: GPL-only unused symbols */ + __start___ksymtab_unused_gpl = .; + *(__ksymtab_unused_gpl) + __stop___ksymtab_unused_gpl = .; + + /* Kernel symbol table: GPL-future symbols */ + __start___ksymtab_gpl_future = .; + *(__ksymtab_gpl_future) + __stop___ksymtab_gpl_future = .; + + /* Kernel symbol table: Normal symbols */ + __start___kcrctab = .; + *(__kcrctab) + __stop___kcrctab = .; + + /* Kernel symbol table: GPL-only symbols */ + __start___kcrctab_gpl = .; + *(__kcrctab_gpl) + __stop___kcrctab_gpl = .; + + /* Kernel symbol table: Normal unused symbols */ + __start___kcrctab_unused = .; + *(__kcrctab_unused) + __stop___kcrctab_unused = .; + + /* Kernel symbol table: GPL-only unused symbols */ + __start___kcrctab_unused_gpl = .; + *(__kcrctab_unused_gpl) + __stop___kcrctab_unused_gpl = .; + + /* Kernel symbol table: GPL-future symbols */ + __start___kcrctab_gpl_future = .; + *(__kcrctab_gpl_future) + __stop___kcrctab_gpl_future = .; + + /* Kernel symbol table: strings */ + *(__ksymtab_strings) + + /* Built-in module parameters */ + . = ALIGN(4) ; + __start___param = .; + *(__param) + __stop___param = .; + + /* Built-in module versions */ + . = ALIGN(4) ; + __start___modver = .; + *(__modver) + __stop___modver = .; + + . = ALIGN(4) ; + _etext = . ; + } > TEXT + + .data DATA_ADDR : { + . = ALIGN(4); + _sdata = . ; + DATA_DATA + CACHELINE_ALIGNED_DATA(32) + PAGE_ALIGNED_DATA(PAGE_SIZE) + *(.data..shared_aligned) + INIT_TASK_DATA(THREAD_SIZE) + _edata = . ; + } > DATA + + .init.text : { + . = ALIGN(PAGE_SIZE); + __init_begin = .; + } > INIT + INIT_TEXT_SECTION(PAGE_SIZE) > INIT + INIT_DATA_SECTION(16) > INIT + .init.data : { + . = ALIGN(PAGE_SIZE); + __init_end = .; + } > INIT + + .bss : { + . = ALIGN(4); + _sbss = . ; + *(.bss) + *(COMMON) + . = ALIGN(4) ; + _ebss = . ; + _end = . ; + } > BSSS + + DISCARDS +} + diff --git a/arch/m68k/lib/Makefile b/arch/m68k/lib/Makefile index af9abf8..1f95881 100644 --- a/arch/m68k/lib/Makefile +++ b/arch/m68k/lib/Makefile @@ -1,6 +1,5 @@ -# -# Makefile for m68k-specific library files.. -# - -lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ - checksum.o string.o uaccess.o +ifdef CONFIG_MMU +include arch/m68k/lib/Makefile_mm +else +include arch/m68k/lib/Makefile_no +endif diff --git a/arch/m68k/lib/Makefile_mm b/arch/m68k/lib/Makefile_mm new file mode 100644 index 0000000..af9abf8 --- /dev/null +++ b/arch/m68k/lib/Makefile_mm @@ -0,0 +1,6 @@ +# +# Makefile for m68k-specific library files.. +# + +lib-y := ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ + checksum.o string.o uaccess.o diff --git a/arch/m68k/lib/Makefile_no b/arch/m68k/lib/Makefile_no new file mode 100644 index 0000000..32d852e --- /dev/null +++ b/arch/m68k/lib/Makefile_no @@ -0,0 +1,7 @@ +# +# Makefile for m68knommu specific library files.. +# + +lib-y := ashldi3.o ashrdi3.o lshrdi3.o \ + muldi3.o mulsi3.o divsi3.o udivsi3.o modsi3.o umodsi3.o \ + checksum.o memcpy.o memmove.o memset.o delay.o diff --git a/arch/m68k/lib/checksum.c b/arch/m68k/lib/checksum.c index 6216f12..1297536 100644 --- a/arch/m68k/lib/checksum.c +++ b/arch/m68k/lib/checksum.c @@ -1,425 +1,5 @@ -/* - * INET An implementation of the TCP/IP protocol suite for the LINUX - * operating system. INET is implemented using the BSD Socket - * interface as the means of communication with the user level. - * - * IP/TCP/UDP checksumming routines - * - * Authors: Jorge Cwik, <jorge@laser.satlink.net> - * Arnt Gulbrandsen, <agulbra@nvg.unit.no> - * Tom May, <ftom@netcom.com> - * Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de> - * Lots of code moved from tcp.c and ip.c; see those files - * for more names. - * - * 03/02/96 Jes Sorensen, Andreas Schwab, Roman Hodek: - * Fixed some nasty bugs, causing some horrible crashes. - * A: At some points, the sum (%0) was used as - * length-counter instead of the length counter - * (%1). Thanks to Roman Hodek for pointing this out. - * B: GCC seems to mess up if one uses too many - * data-registers to hold input values and one tries to - * specify d0 and d1 as scratch registers. Letting gcc - * choose these registers itself solves the problem. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * 1998/8/31 Andreas Schwab: - * Zero out rest of buffer on exception in - * csum_partial_copy_from_user. - */ - -#include <linux/module.h> -#include <net/checksum.h> - -/* - * computes a partial checksum, e.g. for TCP/UDP fragments - */ - -__wsum csum_partial(const void *buff, int len, __wsum sum) -{ - unsigned long tmp1, tmp2; - /* - * Experiments with ethernet and slip connections show that buff - * is aligned on either a 2-byte or 4-byte boundary. - */ - __asm__("movel %2,%3\n\t" - "btst #1,%3\n\t" /* Check alignment */ - "jeq 2f\n\t" - "subql #2,%1\n\t" /* buff%4==2: treat first word */ - "jgt 1f\n\t" - "addql #2,%1\n\t" /* len was == 2, treat only rest */ - "jra 4f\n" - "1:\t" - "addw %2@+,%0\n\t" /* add first word to sum */ - "clrl %3\n\t" - "addxl %3,%0\n" /* add X bit */ - "2:\t" - /* unrolled loop for the main part: do 8 longs at once */ - "movel %1,%3\n\t" /* save len in tmp1 */ - "lsrl #5,%1\n\t" /* len/32 */ - "jeq 2f\n\t" /* not enough... */ - "subql #1,%1\n" - "1:\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "dbra %1,1b\n\t" - "clrl %4\n\t" - "addxl %4,%0\n\t" /* add X bit */ - "clrw %1\n\t" - "subql #1,%1\n\t" - "jcc 1b\n" - "2:\t" - "movel %3,%1\n\t" /* restore len from tmp1 */ - "andw #0x1c,%3\n\t" /* number of rest longs */ - "jeq 4f\n\t" - "lsrw #2,%3\n\t" - "subqw #1,%3\n" - "3:\t" - /* loop for rest longs */ - "movel %2@+,%4\n\t" - "addxl %4,%0\n\t" - "dbra %3,3b\n\t" - "clrl %4\n\t" - "addxl %4,%0\n" /* add X bit */ - "4:\t" - /* now check for rest bytes that do not fit into longs */ - "andw #3,%1\n\t" - "jeq 7f\n\t" - "clrl %4\n\t" /* clear tmp2 for rest bytes */ - "subqw #2,%1\n\t" - "jlt 5f\n\t" - "movew %2@+,%4\n\t" /* have rest >= 2: get word */ - "swap %4\n\t" /* into bits 16..31 */ - "tstw %1\n\t" /* another byte? */ - "jeq 6f\n" - "5:\t" - "moveb %2@,%4\n\t" /* have odd rest: get byte */ - "lslw #8,%4\n\t" /* into bits 8..15; 16..31 untouched */ - "6:\t" - "addl %4,%0\n\t" /* now add rest long to sum */ - "clrl %4\n\t" - "addxl %4,%0\n" /* add X bit */ - "7:\t" - : "=d" (sum), "=d" (len), "=a" (buff), - "=&d" (tmp1), "=&d" (tmp2) - : "0" (sum), "1" (len), "2" (buff) - ); - return(sum); -} - -EXPORT_SYMBOL(csum_partial); - - -/* - * copy from user space while checksumming, with exception handling. - */ - -__wsum -csum_partial_copy_from_user(const void __user *src, void *dst, - int len, __wsum sum, int *csum_err) -{ - /* - * GCC doesn't like more than 10 operands for the asm - * statements so we have to use tmp2 for the error - * code. - */ - unsigned long tmp1, tmp2; - - __asm__("movel %2,%4\n\t" - "btst #1,%4\n\t" /* Check alignment */ - "jeq 2f\n\t" - "subql #2,%1\n\t" /* buff%4==2: treat first word */ - "jgt 1f\n\t" - "addql #2,%1\n\t" /* len was == 2, treat only rest */ - "jra 4f\n" - "1:\n" - "10:\t" - "movesw %2@+,%4\n\t" /* add first word to sum */ - "addw %4,%0\n\t" - "movew %4,%3@+\n\t" - "clrl %4\n\t" - "addxl %4,%0\n" /* add X bit */ - "2:\t" - /* unrolled loop for the main part: do 8 longs at once */ - "movel %1,%4\n\t" /* save len in tmp1 */ - "lsrl #5,%1\n\t" /* len/32 */ - "jeq 2f\n\t" /* not enough... */ - "subql #1,%1\n" - "1:\n" - "11:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "12:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "13:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "14:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "15:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "16:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "17:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "18:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "dbra %1,1b\n\t" - "clrl %5\n\t" - "addxl %5,%0\n\t" /* add X bit */ - "clrw %1\n\t" - "subql #1,%1\n\t" - "jcc 1b\n" - "2:\t" - "movel %4,%1\n\t" /* restore len from tmp1 */ - "andw #0x1c,%4\n\t" /* number of rest longs */ - "jeq 4f\n\t" - "lsrw #2,%4\n\t" - "subqw #1,%4\n" - "3:\n" - /* loop for rest longs */ - "19:\t" - "movesl %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "dbra %4,3b\n\t" - "clrl %5\n\t" - "addxl %5,%0\n" /* add X bit */ - "4:\t" - /* now check for rest bytes that do not fit into longs */ - "andw #3,%1\n\t" - "jeq 7f\n\t" - "clrl %5\n\t" /* clear tmp2 for rest bytes */ - "subqw #2,%1\n\t" - "jlt 5f\n\t" - "20:\t" - "movesw %2@+,%5\n\t" /* have rest >= 2: get word */ - "movew %5,%3@+\n\t" - "swap %5\n\t" /* into bits 16..31 */ - "tstw %1\n\t" /* another byte? */ - "jeq 6f\n" - "5:\n" - "21:\t" - "movesb %2@,%5\n\t" /* have odd rest: get byte */ - "moveb %5,%3@+\n\t" - "lslw #8,%5\n\t" /* into bits 8..15; 16..31 untouched */ - "6:\t" - "addl %5,%0\n\t" /* now add rest long to sum */ - "clrl %5\n\t" - "addxl %5,%0\n\t" /* add X bit */ - "7:\t" - "clrl %5\n" /* no error - clear return value */ - "8:\n" - ".section .fixup,\"ax\"\n" - ".even\n" - /* If any exception occurs zero out the rest. - Similarities with the code above are intentional :-) */ - "90:\t" - "clrw %3@+\n\t" - "movel %1,%4\n\t" - "lsrl #5,%1\n\t" - "jeq 1f\n\t" - "subql #1,%1\n" - "91:\t" - "clrl %3@+\n" - "92:\t" - "clrl %3@+\n" - "93:\t" - "clrl %3@+\n" - "94:\t" - "clrl %3@+\n" - "95:\t" - "clrl %3@+\n" - "96:\t" - "clrl %3@+\n" - "97:\t" - "clrl %3@+\n" - "98:\t" - "clrl %3@+\n\t" - "dbra %1,91b\n\t" - "clrw %1\n\t" - "subql #1,%1\n\t" - "jcc 91b\n" - "1:\t" - "movel %4,%1\n\t" - "andw #0x1c,%4\n\t" - "jeq 1f\n\t" - "lsrw #2,%4\n\t" - "subqw #1,%4\n" - "99:\t" - "clrl %3@+\n\t" - "dbra %4,99b\n\t" - "1:\t" - "andw #3,%1\n\t" - "jeq 9f\n" - "100:\t" - "clrw %3@+\n\t" - "tstw %1\n\t" - "jeq 9f\n" - "101:\t" - "clrb %3@+\n" - "9:\t" -#define STR(X) STR1(X) -#define STR1(X) #X - "moveq #-" STR(EFAULT) ",%5\n\t" - "jra 8b\n" - ".previous\n" - ".section __ex_table,\"a\"\n" - ".long 10b,90b\n" - ".long 11b,91b\n" - ".long 12b,92b\n" - ".long 13b,93b\n" - ".long 14b,94b\n" - ".long 15b,95b\n" - ".long 16b,96b\n" - ".long 17b,97b\n" - ".long 18b,98b\n" - ".long 19b,99b\n" - ".long 20b,100b\n" - ".long 21b,101b\n" - ".previous" - : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst), - "=&d" (tmp1), "=d" (tmp2) - : "0" (sum), "1" (len), "2" (src), "3" (dst) - ); - - *csum_err = tmp2; - - return(sum); -} - -EXPORT_SYMBOL(csum_partial_copy_from_user); - - -/* - * copy from kernel space while checksumming, otherwise like csum_partial - */ - -__wsum -csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) -{ - unsigned long tmp1, tmp2; - __asm__("movel %2,%4\n\t" - "btst #1,%4\n\t" /* Check alignment */ - "jeq 2f\n\t" - "subql #2,%1\n\t" /* buff%4==2: treat first word */ - "jgt 1f\n\t" - "addql #2,%1\n\t" /* len was == 2, treat only rest */ - "jra 4f\n" - "1:\t" - "movew %2@+,%4\n\t" /* add first word to sum */ - "addw %4,%0\n\t" - "movew %4,%3@+\n\t" - "clrl %4\n\t" - "addxl %4,%0\n" /* add X bit */ - "2:\t" - /* unrolled loop for the main part: do 8 longs at once */ - "movel %1,%4\n\t" /* save len in tmp1 */ - "lsrl #5,%1\n\t" /* len/32 */ - "jeq 2f\n\t" /* not enough... */ - "subql #1,%1\n" - "1:\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "dbra %1,1b\n\t" - "clrl %5\n\t" - "addxl %5,%0\n\t" /* add X bit */ - "clrw %1\n\t" - "subql #1,%1\n\t" - "jcc 1b\n" - "2:\t" - "movel %4,%1\n\t" /* restore len from tmp1 */ - "andw #0x1c,%4\n\t" /* number of rest longs */ - "jeq 4f\n\t" - "lsrw #2,%4\n\t" - "subqw #1,%4\n" - "3:\t" - /* loop for rest longs */ - "movel %2@+,%5\n\t" - "addxl %5,%0\n\t" - "movel %5,%3@+\n\t" - "dbra %4,3b\n\t" - "clrl %5\n\t" - "addxl %5,%0\n" /* add X bit */ - "4:\t" - /* now check for rest bytes that do not fit into longs */ - "andw #3,%1\n\t" - "jeq 7f\n\t" - "clrl %5\n\t" /* clear tmp2 for rest bytes */ - "subqw #2,%1\n\t" - "jlt 5f\n\t" - "movew %2@+,%5\n\t" /* have rest >= 2: get word */ - "movew %5,%3@+\n\t" - "swap %5\n\t" /* into bits 16..31 */ - "tstw %1\n\t" /* another byte? */ - "jeq 6f\n" - "5:\t" - "moveb %2@,%5\n\t" /* have odd rest: get byte */ - "moveb %5,%3@+\n\t" - "lslw #8,%5\n" /* into bits 8..15; 16..31 untouched */ - "6:\t" - "addl %5,%0\n\t" /* now add rest long to sum */ - "clrl %5\n\t" - "addxl %5,%0\n" /* add X bit */ - "7:\t" - : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst), - "=&d" (tmp1), "=&d" (tmp2) - : "0" (sum), "1" (len), "2" (src), "3" (dst) - ); - return(sum); -} -EXPORT_SYMBOL(csum_partial_copy_nocheck); +#ifdef CONFIG_MMU +#include "checksum_mm.c" +#else +#include "checksum_no.c" +#endif diff --git a/arch/m68k/lib/checksum_mm.c b/arch/m68k/lib/checksum_mm.c new file mode 100644 index 0000000..6216f12 --- /dev/null +++ b/arch/m68k/lib/checksum_mm.c @@ -0,0 +1,425 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * IP/TCP/UDP checksumming routines + * + * Authors: Jorge Cwik, <jorge@laser.satlink.net> + * Arnt Gulbrandsen, <agulbra@nvg.unit.no> + * Tom May, <ftom@netcom.com> + * Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de> + * Lots of code moved from tcp.c and ip.c; see those files + * for more names. + * + * 03/02/96 Jes Sorensen, Andreas Schwab, Roman Hodek: + * Fixed some nasty bugs, causing some horrible crashes. + * A: At some points, the sum (%0) was used as + * length-counter instead of the length counter + * (%1). Thanks to Roman Hodek for pointing this out. + * B: GCC seems to mess up if one uses too many + * data-registers to hold input values and one tries to + * specify d0 and d1 as scratch registers. Letting gcc + * choose these registers itself solves the problem. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * 1998/8/31 Andreas Schwab: + * Zero out rest of buffer on exception in + * csum_partial_copy_from_user. + */ + +#include <linux/module.h> +#include <net/checksum.h> + +/* + * computes a partial checksum, e.g. for TCP/UDP fragments + */ + +__wsum csum_partial(const void *buff, int len, __wsum sum) +{ + unsigned long tmp1, tmp2; + /* + * Experiments with ethernet and slip connections show that buff + * is aligned on either a 2-byte or 4-byte boundary. + */ + __asm__("movel %2,%3\n\t" + "btst #1,%3\n\t" /* Check alignment */ + "jeq 2f\n\t" + "subql #2,%1\n\t" /* buff%4==2: treat first word */ + "jgt 1f\n\t" + "addql #2,%1\n\t" /* len was == 2, treat only rest */ + "jra 4f\n" + "1:\t" + "addw %2@+,%0\n\t" /* add first word to sum */ + "clrl %3\n\t" + "addxl %3,%0\n" /* add X bit */ + "2:\t" + /* unrolled loop for the main part: do 8 longs at once */ + "movel %1,%3\n\t" /* save len in tmp1 */ + "lsrl #5,%1\n\t" /* len/32 */ + "jeq 2f\n\t" /* not enough... */ + "subql #1,%1\n" + "1:\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "dbra %1,1b\n\t" + "clrl %4\n\t" + "addxl %4,%0\n\t" /* add X bit */ + "clrw %1\n\t" + "subql #1,%1\n\t" + "jcc 1b\n" + "2:\t" + "movel %3,%1\n\t" /* restore len from tmp1 */ + "andw #0x1c,%3\n\t" /* number of rest longs */ + "jeq 4f\n\t" + "lsrw #2,%3\n\t" + "subqw #1,%3\n" + "3:\t" + /* loop for rest longs */ + "movel %2@+,%4\n\t" + "addxl %4,%0\n\t" + "dbra %3,3b\n\t" + "clrl %4\n\t" + "addxl %4,%0\n" /* add X bit */ + "4:\t" + /* now check for rest bytes that do not fit into longs */ + "andw #3,%1\n\t" + "jeq 7f\n\t" + "clrl %4\n\t" /* clear tmp2 for rest bytes */ + "subqw #2,%1\n\t" + "jlt 5f\n\t" + "movew %2@+,%4\n\t" /* have rest >= 2: get word */ + "swap %4\n\t" /* into bits 16..31 */ + "tstw %1\n\t" /* another byte? */ + "jeq 6f\n" + "5:\t" + "moveb %2@,%4\n\t" /* have odd rest: get byte */ + "lslw #8,%4\n\t" /* into bits 8..15; 16..31 untouched */ + "6:\t" + "addl %4,%0\n\t" /* now add rest long to sum */ + "clrl %4\n\t" + "addxl %4,%0\n" /* add X bit */ + "7:\t" + : "=d" (sum), "=d" (len), "=a" (buff), + "=&d" (tmp1), "=&d" (tmp2) + : "0" (sum), "1" (len), "2" (buff) + ); + return(sum); +} + +EXPORT_SYMBOL(csum_partial); + + +/* + * copy from user space while checksumming, with exception handling. + */ + +__wsum +csum_partial_copy_from_user(const void __user *src, void *dst, + int len, __wsum sum, int *csum_err) +{ + /* + * GCC doesn't like more than 10 operands for the asm + * statements so we have to use tmp2 for the error + * code. + */ + unsigned long tmp1, tmp2; + + __asm__("movel %2,%4\n\t" + "btst #1,%4\n\t" /* Check alignment */ + "jeq 2f\n\t" + "subql #2,%1\n\t" /* buff%4==2: treat first word */ + "jgt 1f\n\t" + "addql #2,%1\n\t" /* len was == 2, treat only rest */ + "jra 4f\n" + "1:\n" + "10:\t" + "movesw %2@+,%4\n\t" /* add first word to sum */ + "addw %4,%0\n\t" + "movew %4,%3@+\n\t" + "clrl %4\n\t" + "addxl %4,%0\n" /* add X bit */ + "2:\t" + /* unrolled loop for the main part: do 8 longs at once */ + "movel %1,%4\n\t" /* save len in tmp1 */ + "lsrl #5,%1\n\t" /* len/32 */ + "jeq 2f\n\t" /* not enough... */ + "subql #1,%1\n" + "1:\n" + "11:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "12:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "13:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "14:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "15:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "16:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "17:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "18:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "dbra %1,1b\n\t" + "clrl %5\n\t" + "addxl %5,%0\n\t" /* add X bit */ + "clrw %1\n\t" + "subql #1,%1\n\t" + "jcc 1b\n" + "2:\t" + "movel %4,%1\n\t" /* restore len from tmp1 */ + "andw #0x1c,%4\n\t" /* number of rest longs */ + "jeq 4f\n\t" + "lsrw #2,%4\n\t" + "subqw #1,%4\n" + "3:\n" + /* loop for rest longs */ + "19:\t" + "movesl %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "dbra %4,3b\n\t" + "clrl %5\n\t" + "addxl %5,%0\n" /* add X bit */ + "4:\t" + /* now check for rest bytes that do not fit into longs */ + "andw #3,%1\n\t" + "jeq 7f\n\t" + "clrl %5\n\t" /* clear tmp2 for rest bytes */ + "subqw #2,%1\n\t" + "jlt 5f\n\t" + "20:\t" + "movesw %2@+,%5\n\t" /* have rest >= 2: get word */ + "movew %5,%3@+\n\t" + "swap %5\n\t" /* into bits 16..31 */ + "tstw %1\n\t" /* another byte? */ + "jeq 6f\n" + "5:\n" + "21:\t" + "movesb %2@,%5\n\t" /* have odd rest: get byte */ + "moveb %5,%3@+\n\t" + "lslw #8,%5\n\t" /* into bits 8..15; 16..31 untouched */ + "6:\t" + "addl %5,%0\n\t" /* now add rest long to sum */ + "clrl %5\n\t" + "addxl %5,%0\n\t" /* add X bit */ + "7:\t" + "clrl %5\n" /* no error - clear return value */ + "8:\n" + ".section .fixup,\"ax\"\n" + ".even\n" + /* If any exception occurs zero out the rest. + Similarities with the code above are intentional :-) */ + "90:\t" + "clrw %3@+\n\t" + "movel %1,%4\n\t" + "lsrl #5,%1\n\t" + "jeq 1f\n\t" + "subql #1,%1\n" + "91:\t" + "clrl %3@+\n" + "92:\t" + "clrl %3@+\n" + "93:\t" + "clrl %3@+\n" + "94:\t" + "clrl %3@+\n" + "95:\t" + "clrl %3@+\n" + "96:\t" + "clrl %3@+\n" + "97:\t" + "clrl %3@+\n" + "98:\t" + "clrl %3@+\n\t" + "dbra %1,91b\n\t" + "clrw %1\n\t" + "subql #1,%1\n\t" + "jcc 91b\n" + "1:\t" + "movel %4,%1\n\t" + "andw #0x1c,%4\n\t" + "jeq 1f\n\t" + "lsrw #2,%4\n\t" + "subqw #1,%4\n" + "99:\t" + "clrl %3@+\n\t" + "dbra %4,99b\n\t" + "1:\t" + "andw #3,%1\n\t" + "jeq 9f\n" + "100:\t" + "clrw %3@+\n\t" + "tstw %1\n\t" + "jeq 9f\n" + "101:\t" + "clrb %3@+\n" + "9:\t" +#define STR(X) STR1(X) +#define STR1(X) #X + "moveq #-" STR(EFAULT) ",%5\n\t" + "jra 8b\n" + ".previous\n" + ".section __ex_table,\"a\"\n" + ".long 10b,90b\n" + ".long 11b,91b\n" + ".long 12b,92b\n" + ".long 13b,93b\n" + ".long 14b,94b\n" + ".long 15b,95b\n" + ".long 16b,96b\n" + ".long 17b,97b\n" + ".long 18b,98b\n" + ".long 19b,99b\n" + ".long 20b,100b\n" + ".long 21b,101b\n" + ".previous" + : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst), + "=&d" (tmp1), "=d" (tmp2) + : "0" (sum), "1" (len), "2" (src), "3" (dst) + ); + + *csum_err = tmp2; + + return(sum); +} + +EXPORT_SYMBOL(csum_partial_copy_from_user); + + +/* + * copy from kernel space while checksumming, otherwise like csum_partial + */ + +__wsum +csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) +{ + unsigned long tmp1, tmp2; + __asm__("movel %2,%4\n\t" + "btst #1,%4\n\t" /* Check alignment */ + "jeq 2f\n\t" + "subql #2,%1\n\t" /* buff%4==2: treat first word */ + "jgt 1f\n\t" + "addql #2,%1\n\t" /* len was == 2, treat only rest */ + "jra 4f\n" + "1:\t" + "movew %2@+,%4\n\t" /* add first word to sum */ + "addw %4,%0\n\t" + "movew %4,%3@+\n\t" + "clrl %4\n\t" + "addxl %4,%0\n" /* add X bit */ + "2:\t" + /* unrolled loop for the main part: do 8 longs at once */ + "movel %1,%4\n\t" /* save len in tmp1 */ + "lsrl #5,%1\n\t" /* len/32 */ + "jeq 2f\n\t" /* not enough... */ + "subql #1,%1\n" + "1:\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "dbra %1,1b\n\t" + "clrl %5\n\t" + "addxl %5,%0\n\t" /* add X bit */ + "clrw %1\n\t" + "subql #1,%1\n\t" + "jcc 1b\n" + "2:\t" + "movel %4,%1\n\t" /* restore len from tmp1 */ + "andw #0x1c,%4\n\t" /* number of rest longs */ + "jeq 4f\n\t" + "lsrw #2,%4\n\t" + "subqw #1,%4\n" + "3:\t" + /* loop for rest longs */ + "movel %2@+,%5\n\t" + "addxl %5,%0\n\t" + "movel %5,%3@+\n\t" + "dbra %4,3b\n\t" + "clrl %5\n\t" + "addxl %5,%0\n" /* add X bit */ + "4:\t" + /* now check for rest bytes that do not fit into longs */ + "andw #3,%1\n\t" + "jeq 7f\n\t" + "clrl %5\n\t" /* clear tmp2 for rest bytes */ + "subqw #2,%1\n\t" + "jlt 5f\n\t" + "movew %2@+,%5\n\t" /* have rest >= 2: get word */ + "movew %5,%3@+\n\t" + "swap %5\n\t" /* into bits 16..31 */ + "tstw %1\n\t" /* another byte? */ + "jeq 6f\n" + "5:\t" + "moveb %2@,%5\n\t" /* have odd rest: get byte */ + "moveb %5,%3@+\n\t" + "lslw #8,%5\n" /* into bits 8..15; 16..31 untouched */ + "6:\t" + "addl %5,%0\n\t" /* now add rest long to sum */ + "clrl %5\n\t" + "addxl %5,%0\n" /* add X bit */ + "7:\t" + : "=d" (sum), "=d" (len), "=a" (src), "=a" (dst), + "=&d" (tmp1), "=&d" (tmp2) + : "0" (sum), "1" (len), "2" (src), "3" (dst) + ); + return(sum); +} +EXPORT_SYMBOL(csum_partial_copy_nocheck); diff --git a/arch/m68k/lib/checksum_no.c b/arch/m68k/lib/checksum_no.c new file mode 100644 index 0000000..eccf25d --- /dev/null +++ b/arch/m68k/lib/checksum_no.c @@ -0,0 +1,153 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * IP/TCP/UDP checksumming routines + * + * Authors: Jorge Cwik, <jorge@laser.satlink.net> + * Arnt Gulbrandsen, <agulbra@nvg.unit.no> + * Tom May, <ftom@netcom.com> + * Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de> + * Lots of code moved from tcp.c and ip.c; see those files + * for more names. + * + * 03/02/96 Jes Sorensen, Andreas Schwab, Roman Hodek: + * Fixed some nasty bugs, causing some horrible crashes. + * A: At some points, the sum (%0) was used as + * length-counter instead of the length counter + * (%1). Thanks to Roman Hodek for pointing this out. + * B: GCC seems to mess up if one uses too many + * data-registers to hold input values and one tries to + * specify d0 and d1 as scratch registers. Letting gcc choose these + * registers itself solves the problem. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +/* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access kills, so most + of the assembly has to go. */ + +#include <linux/module.h> +#include <net/checksum.h> + +static inline unsigned short from32to16(unsigned long x) +{ + /* add up 16-bit and 16-bit for 16+c bit */ + x = (x & 0xffff) + (x >> 16); + /* add up carry.. */ + x = (x & 0xffff) + (x >> 16); + return x; +} + +static unsigned long do_csum(const unsigned char * buff, int len) +{ + int odd, count; + unsigned long result = 0; + + if (len <= 0) + goto out; + odd = 1 & (unsigned long) buff; + if (odd) { + result = *buff; + len--; + buff++; + } + count = len >> 1; /* nr of 16-bit words.. */ + if (count) { + if (2 & (unsigned long) buff) { + result += *(unsigned short *) buff; + count--; + len -= 2; + buff += 2; + } + count >>= 1; /* nr of 32-bit words.. */ + if (count) { + unsigned long carry = 0; + do { + unsigned long w = *(unsigned long *) buff; + count--; + buff += 4; + result += carry; + result += w; + carry = (w > result); + } while (count); + result += carry; + result = (result & 0xffff) + (result >> 16); + } + if (len & 2) { + result += *(unsigned short *) buff; + buff += 2; + } + } + if (len & 1) + result += (*buff << 8); + result = from32to16(result); + if (odd) + result = ((result >> 8) & 0xff) | ((result & 0xff) << 8); +out: + return result; +} + +#ifdef CONFIG_COLDFIRE +/* + * This is a version of ip_compute_csum() optimized for IP headers, + * which always checksum on 4 octet boundaries. + */ +__sum16 ip_fast_csum(const void *iph, unsigned int ihl) +{ + return (__force __sum16)~do_csum(iph,ihl*4); +} +#endif + +/* + * computes the checksum of a memory block at buff, length len, + * and adds in "sum" (32-bit) + * + * returns a 32-bit number suitable for feeding into itself + * or csum_tcpudp_magic + * + * this function must be called with even lengths, except + * for the last fragment, which may be odd + * + * it's best to have buff aligned on a 32-bit boundary + */ +__wsum csum_partial(const void *buff, int len, __wsum sum) +{ + unsigned int result = do_csum(buff, len); + + /* add in old sum, and carry.. */ + result += (__force u32)sum; + if ((__force u32)sum > result) + result += 1; + return (__force __wsum)result; +} + +EXPORT_SYMBOL(csum_partial); + +/* + * copy from fs while checksumming, otherwise like csum_partial + */ + +__wsum +csum_partial_copy_from_user(const void __user *src, void *dst, + int len, __wsum sum, int *csum_err) +{ + if (csum_err) *csum_err = 0; + memcpy(dst, (__force const void *)src, len); + return csum_partial(dst, len, sum); +} + +/* + * copy from ds while checksumming, otherwise like csum_partial + */ + +__wsum +csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) +{ + memcpy(dst, src, len); + return csum_partial(dst, len, sum); +} diff --git a/arch/m68k/lib/delay.c b/arch/m68k/lib/delay.c new file mode 100644 index 0000000..5bd5472 --- /dev/null +++ b/arch/m68k/lib/delay.c @@ -0,0 +1,21 @@ +/* + * arch/m68knommu/lib/delay.c + * + * (C) Copyright 2004, Greg Ungerer <gerg@snapgear.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <asm/param.h> +#include <asm/delay.h> + +EXPORT_SYMBOL(udelay); + +void udelay(unsigned long usecs) +{ + _udelay(usecs); +} + diff --git a/arch/m68k/lib/divsi3.S b/arch/m68k/lib/divsi3.S new file mode 100644 index 0000000..ec307b6 --- /dev/null +++ b/arch/m68k/lib/divsi3.S @@ -0,0 +1,125 @@ +/* libgcc1 routines for 68000 w/o floating-point hardware. + Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file with other programs, and to distribute +those programs without any restriction coming from the use of this +file. (The General Public License restrictions do apply in other +respects; for example, they cover modification of the file, and +distribution when not linked into another program.) + +This file is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* As a special exception, if you link this library with files + compiled with GCC to produce an executable, this does not cause + the resulting executable to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +/* Use this one for any 680x0; assumes no floating point hardware. + The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk. + Some of this code comes from MINIX, via the folks at ericsson. + D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992 +*/ + +/* These are predefined by new versions of GNU cpp. */ + +#ifndef __USER_LABEL_PREFIX__ +#define __USER_LABEL_PREFIX__ _ +#endif + +#ifndef __REGISTER_PREFIX__ +#define __REGISTER_PREFIX__ +#endif + +#ifndef __IMMEDIATE_PREFIX__ +#define __IMMEDIATE_PREFIX__ # +#endif + +/* ANSI concatenation macros. */ + +#define CONCAT1(a, b) CONCAT2(a, b) +#define CONCAT2(a, b) a ## b + +/* Use the right prefix for global labels. */ + +#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) + +/* Use the right prefix for registers. */ + +#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) + +/* Use the right prefix for immediate values. */ + +#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x) + +#define d0 REG (d0) +#define d1 REG (d1) +#define d2 REG (d2) +#define d3 REG (d3) +#define d4 REG (d4) +#define d5 REG (d5) +#define d6 REG (d6) +#define d7 REG (d7) +#define a0 REG (a0) +#define a1 REG (a1) +#define a2 REG (a2) +#define a3 REG (a3) +#define a4 REG (a4) +#define a5 REG (a5) +#define a6 REG (a6) +#define fp REG (fp) +#define sp REG (sp) + + .text + .proc + .globl SYM (__divsi3) +SYM (__divsi3): + movel d2, sp@- + + moveq IMM (1), d2 /* sign of result stored in d2 (=1 or =-1) */ + movel sp@(12), d1 /* d1 = divisor */ + jpl L1 + negl d1 +#if !(defined(__mcf5200__) || defined(__mcoldfire__)) + negb d2 /* change sign because divisor <0 */ +#else + negl d2 /* change sign because divisor <0 */ +#endif +L1: movel sp@(8), d0 /* d0 = dividend */ + jpl L2 + negl d0 +#if !(defined(__mcf5200__) || defined(__mcoldfire__)) + negb d2 +#else + negl d2 +#endif + +L2: movel d1, sp@- + movel d0, sp@- + jbsr SYM (__udivsi3) /* divide abs(dividend) by abs(divisor) */ + addql IMM (8), sp + + tstb d2 + jpl L3 + negl d0 + +L3: movel sp@+, d2 + rts + diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c new file mode 100644 index 0000000..b50dbca --- /dev/null +++ b/arch/m68k/lib/memcpy.c @@ -0,0 +1,62 @@ + +#include <linux/types.h> + +void * memcpy(void * to, const void * from, size_t n) +{ +#ifdef CONFIG_COLDFIRE + void *xto = to; + size_t temp; + + if (!n) + return xto; + if ((long) to & 1) + { + char *cto = to; + const char *cfrom = from; + *cto++ = *cfrom++; + to = cto; + from = cfrom; + n--; + } + if (n > 2 && (long) to & 2) + { + short *sto = to; + const short *sfrom = from; + *sto++ = *sfrom++; + to = sto; + from = sfrom; + n -= 2; + } + temp = n >> 2; + if (temp) + { + long *lto = to; + const long *lfrom = from; + for (; temp; temp--) + *lto++ = *lfrom++; + to = lto; + from = lfrom; + } + if (n & 2) + { + short *sto = to; + const short *sfrom = from; + *sto++ = *sfrom++; + to = sto; + from = sfrom; + } + if (n & 1) + { + char *cto = to; + const char *cfrom = from; + *cto = *cfrom; + } + return xto; +#else + const char *c_from = from; + char *c_to = to; + while (n-- > 0) + *c_to++ = *c_from++; + return((void *) to); +#endif +} diff --git a/arch/m68k/lib/memmove.c b/arch/m68k/lib/memmove.c new file mode 100644 index 0000000..b3dcfe9 --- /dev/null +++ b/arch/m68k/lib/memmove.c @@ -0,0 +1,105 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#define __IN_STRING_C + +#include <linux/module.h> +#include <linux/string.h> + +void *memmove(void *dest, const void *src, size_t n) +{ + void *xdest = dest; + size_t temp; + + if (!n) + return xdest; + + if (dest < src) { + if ((long)dest & 1) { + char *cdest = dest; + const char *csrc = src; + *cdest++ = *csrc++; + dest = cdest; + src = csrc; + n--; + } + if (n > 2 && (long)dest & 2) { + short *sdest = dest; + const short *ssrc = src; + *sdest++ = *ssrc++; + dest = sdest; + src = ssrc; + n -= 2; + } + temp = n >> 2; + if (temp) { + long *ldest = dest; + const long *lsrc = src; + temp--; + do + *ldest++ = *lsrc++; + while (temp--); + dest = ldest; + src = lsrc; + } + if (n & 2) { + short *sdest = dest; + const short *ssrc = src; + *sdest++ = *ssrc++; + dest = sdest; + src = ssrc; + } + if (n & 1) { + char *cdest = dest; + const char *csrc = src; + *cdest = *csrc; + } + } else { + dest = (char *)dest + n; + src = (const char *)src + n; + if ((long)dest & 1) { + char *cdest = dest; + const char *csrc = src; + *--cdest = *--csrc; + dest = cdest; + src = csrc; + n--; + } + if (n > 2 && (long)dest & 2) { + short *sdest = dest; + const short *ssrc = src; + *--sdest = *--ssrc; + dest = sdest; + src = ssrc; + n -= 2; + } + temp = n >> 2; + if (temp) { + long *ldest = dest; + const long *lsrc = src; + temp--; + do + *--ldest = *--lsrc; + while (temp--); + dest = ldest; + src = lsrc; + } + if (n & 2) { + short *sdest = dest; + const short *ssrc = src; + *--sdest = *--ssrc; + dest = sdest; + src = ssrc; + } + if (n & 1) { + char *cdest = dest; + const char *csrc = src; + *--cdest = *--csrc; + } + } + return xdest; +} +EXPORT_SYMBOL(memmove); diff --git a/arch/m68k/lib/memset.c b/arch/m68k/lib/memset.c new file mode 100644 index 0000000..1389bf4 --- /dev/null +++ b/arch/m68k/lib/memset.c @@ -0,0 +1,47 @@ +#include <linux/types.h> + +void * memset(void * s, int c, size_t count) +{ + void *xs = s; + size_t temp; + + if (!count) + return xs; + c &= 0xff; + c |= c << 8; + c |= c << 16; + if ((long) s & 1) + { + char *cs = s; + *cs++ = c; + s = cs; + count--; + } + if (count > 2 && (long) s & 2) + { + short *ss = s; + *ss++ = c; + s = ss; + count -= 2; + } + temp = count >> 2; + if (temp) + { + long *ls = s; + for (; temp; temp--) + *ls++ = c; + s = ls; + } + if (count & 2) + { + short *ss = s; + *ss++ = c; + s = ss; + } + if (count & 1) + { + char *cs = s; + *cs = c; + } + return xs; +} diff --git a/arch/m68k/lib/modsi3.S b/arch/m68k/lib/modsi3.S new file mode 100644 index 0000000..ef38494 --- /dev/null +++ b/arch/m68k/lib/modsi3.S @@ -0,0 +1,113 @@ +/* libgcc1 routines for 68000 w/o floating-point hardware. + Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file with other programs, and to distribute +those programs without any restriction coming from the use of this +file. (The General Public License restrictions do apply in other +respects; for example, they cover modification of the file, and +distribution when not linked into another program.) + +This file is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* As a special exception, if you link this library with files + compiled with GCC to produce an executable, this does not cause + the resulting executable to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +/* Use this one for any 680x0; assumes no floating point hardware. + The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk. + Some of this code comes from MINIX, via the folks at ericsson. + D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992 +*/ + +/* These are predefined by new versions of GNU cpp. */ + +#ifndef __USER_LABEL_PREFIX__ +#define __USER_LABEL_PREFIX__ _ +#endif + +#ifndef __REGISTER_PREFIX__ +#define __REGISTER_PREFIX__ +#endif + +#ifndef __IMMEDIATE_PREFIX__ +#define __IMMEDIATE_PREFIX__ # +#endif + +/* ANSI concatenation macros. */ + +#define CONCAT1(a, b) CONCAT2(a, b) +#define CONCAT2(a, b) a ## b + +/* Use the right prefix for global labels. */ + +#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) + +/* Use the right prefix for registers. */ + +#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) + +/* Use the right prefix for immediate values. */ + +#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x) + +#define d0 REG (d0) +#define d1 REG (d1) +#define d2 REG (d2) +#define d3 REG (d3) +#define d4 REG (d4) +#define d5 REG (d5) +#define d6 REG (d6) +#define d7 REG (d7) +#define a0 REG (a0) +#define a1 REG (a1) +#define a2 REG (a2) +#define a3 REG (a3) +#define a4 REG (a4) +#define a5 REG (a5) +#define a6 REG (a6) +#define fp REG (fp) +#define sp REG (sp) + + .text + .proc + .globl SYM (__modsi3) +SYM (__modsi3): + movel sp@(8), d1 /* d1 = divisor */ + movel sp@(4), d0 /* d0 = dividend */ + movel d1, sp@- + movel d0, sp@- + jbsr SYM (__divsi3) + addql IMM (8), sp + movel sp@(8), d1 /* d1 = divisor */ +#if !(defined(__mcf5200__) || defined(__mcoldfire__)) + movel d1, sp@- + movel d0, sp@- + jbsr SYM (__mulsi3) /* d0 = (a/b)*b */ + addql IMM (8), sp +#else + mulsl d1,d0 +#endif + movel sp@(4), d1 /* d1 = dividend */ + subl d0, d1 /* d1 = a - (a/b)*b */ + movel d1, d0 + rts + diff --git a/arch/m68k/lib/muldi3.c b/arch/m68k/lib/muldi3.c index be4f275..16e0eb3 100644 --- a/arch/m68k/lib/muldi3.c +++ b/arch/m68k/lib/muldi3.c @@ -1,63 +1,5 @@ -/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and - gcc-2.7.2.3/longlong.h which is: */ -/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. - -This file is part of GNU CC. - -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -#define BITS_PER_UNIT 8 - -#define umul_ppmm(w1, w0, u, v) \ - __asm__ ("mulu%.l %3,%1:%0" \ - : "=d" ((USItype)(w0)), \ - "=d" ((USItype)(w1)) \ - : "%0" ((USItype)(u)), \ - "dmi" ((USItype)(v))) - -#define __umulsidi3(u, v) \ - ({DIunion __w; \ - umul_ppmm (__w.s.high, __w.s.low, u, v); \ - __w.ll; }) - -typedef int SItype __attribute__ ((mode (SI))); -typedef unsigned int USItype __attribute__ ((mode (SI))); -typedef int DItype __attribute__ ((mode (DI))); -typedef int word_type __attribute__ ((mode (__word__))); - -struct DIstruct {SItype high, low;}; - -typedef union -{ - struct DIstruct s; - DItype ll; -} DIunion; - -DItype -__muldi3 (DItype u, DItype v) -{ - DIunion w; - DIunion uu, vv; - - uu.ll = u, - vv.ll = v; - - w.ll = __umulsidi3 (uu.s.low, vv.s.low); - w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high - + (USItype) uu.s.high * (USItype) vv.s.low); - - return w.ll; -} +#ifdef CONFIG_MMU +#include "muldi3_mm.c" +#else +#include "muldi3_no.c" +#endif diff --git a/arch/m68k/lib/muldi3_mm.c b/arch/m68k/lib/muldi3_mm.c new file mode 100644 index 0000000..be4f275 --- /dev/null +++ b/arch/m68k/lib/muldi3_mm.c @@ -0,0 +1,63 @@ +/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and + gcc-2.7.2.3/longlong.h which is: */ +/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#define BITS_PER_UNIT 8 + +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mulu%.l %3,%1:%0" \ + : "=d" ((USItype)(w0)), \ + "=d" ((USItype)(w1)) \ + : "%0" ((USItype)(u)), \ + "dmi" ((USItype)(v))) + +#define __umulsidi3(u, v) \ + ({DIunion __w; \ + umul_ppmm (__w.s.high, __w.s.low, u, v); \ + __w.ll; }) + +typedef int SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef int word_type __attribute__ ((mode (__word__))); + +struct DIstruct {SItype high, low;}; + +typedef union +{ + struct DIstruct s; + DItype ll; +} DIunion; + +DItype +__muldi3 (DItype u, DItype v) +{ + DIunion w; + DIunion uu, vv; + + uu.ll = u, + vv.ll = v; + + w.ll = __umulsidi3 (uu.s.low, vv.s.low); + w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high + + (USItype) uu.s.high * (USItype) vv.s.low); + + return w.ll; +} diff --git a/arch/m68k/lib/muldi3_no.c b/arch/m68k/lib/muldi3_no.c new file mode 100644 index 0000000..34af72c --- /dev/null +++ b/arch/m68k/lib/muldi3_no.c @@ -0,0 +1,86 @@ +/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and + gcc-2.7.2.3/longlong.h which is: */ +/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#define BITS_PER_UNIT 8 +#define SI_TYPE_SIZE 32 + +#define __BITS4 (SI_TYPE_SIZE / 4) +#define __ll_B (1L << (SI_TYPE_SIZE / 2)) +#define __ll_lowpart(t) ((USItype) (t) % __ll_B) +#define __ll_highpart(t) ((USItype) (t) / __ll_B) + +#define umul_ppmm(w1, w0, u, v) \ + do { \ + USItype __x0, __x1, __x2, __x3; \ + USItype __ul, __vl, __uh, __vh; \ + \ + __ul = __ll_lowpart (u); \ + __uh = __ll_highpart (u); \ + __vl = __ll_lowpart (v); \ + __vh = __ll_highpart (v); \ + \ + __x0 = (USItype) __ul * __vl; \ + __x1 = (USItype) __ul * __vh; \ + __x2 = (USItype) __uh * __vl; \ + __x3 = (USItype) __uh * __vh; \ + \ + __x1 += __ll_highpart (__x0);/* this can't give carry */ \ + __x1 += __x2; /* but this indeed can */ \ + if (__x1 < __x2) /* did we get it? */ \ + __x3 += __ll_B; /* yes, add it in the proper pos. */ \ + \ + (w1) = __x3 + __ll_highpart (__x1); \ + (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \ + } while (0) + +#define __umulsidi3(u, v) \ + ({DIunion __w; \ + umul_ppmm (__w.s.high, __w.s.low, u, v); \ + __w.ll; }) + +typedef int SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef int word_type __attribute__ ((mode (__word__))); + +struct DIstruct {SItype high, low;}; + +typedef union +{ + struct DIstruct s; + DItype ll; +} DIunion; + +DItype +__muldi3 (DItype u, DItype v) +{ + DIunion w; + DIunion uu, vv; + + uu.ll = u, + vv.ll = v; + + w.ll = __umulsidi3 (uu.s.low, vv.s.low); + w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high + + (USItype) uu.s.high * (USItype) vv.s.low); + + return w.ll; +} diff --git a/arch/m68k/lib/mulsi3.S b/arch/m68k/lib/mulsi3.S new file mode 100644 index 0000000..ce29ea3 --- /dev/null +++ b/arch/m68k/lib/mulsi3.S @@ -0,0 +1,110 @@ +/* libgcc1 routines for 68000 w/o floating-point hardware. + Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file with other programs, and to distribute +those programs without any restriction coming from the use of this +file. (The General Public License restrictions do apply in other +respects; for example, they cover modification of the file, and +distribution when not linked into another program.) + +This file is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* As a special exception, if you link this library with files + compiled with GCC to produce an executable, this does not cause + the resulting executable to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +/* Use this one for any 680x0; assumes no floating point hardware. + The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk. + Some of this code comes from MINIX, via the folks at ericsson. + D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992 +*/ + +/* These are predefined by new versions of GNU cpp. */ + +#ifndef __USER_LABEL_PREFIX__ +#define __USER_LABEL_PREFIX__ _ +#endif + +#ifndef __REGISTER_PREFIX__ +#define __REGISTER_PREFIX__ +#endif + +#ifndef __IMMEDIATE_PREFIX__ +#define __IMMEDIATE_PREFIX__ # +#endif + +/* ANSI concatenation macros. */ + +#define CONCAT1(a, b) CONCAT2(a, b) +#define CONCAT2(a, b) a ## b + +/* Use the right prefix for global labels. */ + +#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) + +/* Use the right prefix for registers. */ + +#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) + +/* Use the right prefix for immediate values. */ + +#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x) + +#define d0 REG (d0) +#define d1 REG (d1) +#define d2 REG (d2) +#define d3 REG (d3) +#define d4 REG (d4) +#define d5 REG (d5) +#define d6 REG (d6) +#define d7 REG (d7) +#define a0 REG (a0) +#define a1 REG (a1) +#define a2 REG (a2) +#define a3 REG (a3) +#define a4 REG (a4) +#define a5 REG (a5) +#define a6 REG (a6) +#define fp REG (fp) +#define sp REG (sp) + + .text + .proc + .globl SYM (__mulsi3) +SYM (__mulsi3): + movew sp@(4), d0 /* x0 -> d0 */ + muluw sp@(10), d0 /* x0*y1 */ + movew sp@(6), d1 /* x1 -> d1 */ + muluw sp@(8), d1 /* x1*y0 */ +#if !(defined(__mcf5200__) || defined(__mcoldfire__)) + addw d1, d0 +#else + addl d1, d0 +#endif + swap d0 + clrw d0 + movew sp@(6), d1 /* x1 -> d1 */ + muluw sp@(10), d1 /* x1*y1 */ + addl d1, d0 + + rts + diff --git a/arch/m68k/lib/udivsi3.S b/arch/m68k/lib/udivsi3.S new file mode 100644 index 0000000..c424c4a --- /dev/null +++ b/arch/m68k/lib/udivsi3.S @@ -0,0 +1,162 @@ +/* libgcc1 routines for 68000 w/o floating-point hardware. + Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file with other programs, and to distribute +those programs without any restriction coming from the use of this +file. (The General Public License restrictions do apply in other +respects; for example, they cover modification of the file, and +distribution when not linked into another program.) + +This file is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* As a special exception, if you link this library with files + compiled with GCC to produce an executable, this does not cause + the resulting executable to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +/* Use this one for any 680x0; assumes no floating point hardware. + The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk. + Some of this code comes from MINIX, via the folks at ericsson. + D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992 +*/ + +/* These are predefined by new versions of GNU cpp. */ + +#ifndef __USER_LABEL_PREFIX__ +#define __USER_LABEL_PREFIX__ _ +#endif + +#ifndef __REGISTER_PREFIX__ +#define __REGISTER_PREFIX__ +#endif + +#ifndef __IMMEDIATE_PREFIX__ +#define __IMMEDIATE_PREFIX__ # +#endif + +/* ANSI concatenation macros. */ + +#define CONCAT1(a, b) CONCAT2(a, b) +#define CONCAT2(a, b) a ## b + +/* Use the right prefix for global labels. */ + +#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) + +/* Use the right prefix for registers. */ + +#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) + +/* Use the right prefix for immediate values. */ + +#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x) + +#define d0 REG (d0) +#define d1 REG (d1) +#define d2 REG (d2) +#define d3 REG (d3) +#define d4 REG (d4) +#define d5 REG (d5) +#define d6 REG (d6) +#define d7 REG (d7) +#define a0 REG (a0) +#define a1 REG (a1) +#define a2 REG (a2) +#define a3 REG (a3) +#define a4 REG (a4) +#define a5 REG (a5) +#define a6 REG (a6) +#define fp REG (fp) +#define sp REG (sp) + + .text + .proc + .globl SYM (__udivsi3) +SYM (__udivsi3): +#if !(defined(__mcf5200__) || defined(__mcoldfire__)) + movel d2, sp@- + movel sp@(12), d1 /* d1 = divisor */ + movel sp@(8), d0 /* d0 = dividend */ + + cmpl IMM (0x10000), d1 /* divisor >= 2 ^ 16 ? */ + jcc L3 /* then try next algorithm */ + movel d0, d2 + clrw d2 + swap d2 + divu d1, d2 /* high quotient in lower word */ + movew d2, d0 /* save high quotient */ + swap d0 + movew sp@(10), d2 /* get low dividend + high rest */ + divu d1, d2 /* low quotient */ + movew d2, d0 + jra L6 + +L3: movel d1, d2 /* use d2 as divisor backup */ +L4: lsrl IMM (1), d1 /* shift divisor */ + lsrl IMM (1), d0 /* shift dividend */ + cmpl IMM (0x10000), d1 /* still divisor >= 2 ^ 16 ? */ + jcc L4 + divu d1, d0 /* now we have 16 bit divisor */ + andl IMM (0xffff), d0 /* mask out divisor, ignore remainder */ + +/* Multiply the 16 bit tentative quotient with the 32 bit divisor. Because of + the operand ranges, this might give a 33 bit product. If this product is + greater than the dividend, the tentative quotient was too large. */ + movel d2, d1 + mulu d0, d1 /* low part, 32 bits */ + swap d2 + mulu d0, d2 /* high part, at most 17 bits */ + swap d2 /* align high part with low part */ + tstw d2 /* high part 17 bits? */ + jne L5 /* if 17 bits, quotient was too large */ + addl d2, d1 /* add parts */ + jcs L5 /* if sum is 33 bits, quotient was too large */ + cmpl sp@(8), d1 /* compare the sum with the dividend */ + jls L6 /* if sum > dividend, quotient was too large */ +L5: subql IMM (1), d0 /* adjust quotient */ + +L6: movel sp@+, d2 + rts + +#else /* __mcf5200__ || __mcoldfire__ */ + +/* Coldfire implementation of non-restoring division algorithm from + Hennessy & Patterson, Appendix A. */ + link a6,IMM (-12) + moveml d2-d4,sp@ + movel a6@(8),d0 + movel a6@(12),d1 + clrl d2 | clear p + moveq IMM (31),d4 +L1: addl d0,d0 | shift reg pair (p,a) one bit left + addxl d2,d2 + movl d2,d3 | subtract b from p, store in tmp. + subl d1,d3 + jcs L2 | if no carry, + bset IMM (0),d0 | set the low order bit of a to 1, + movl d3,d2 | and store tmp in p. +L2: subql IMM (1),d4 + jcc L1 + moveml sp@,d2-d4 | restore data registers + unlk a6 | and return + rts +#endif /* __mcf5200__ || __mcoldfire__ */ + diff --git a/arch/m68k/lib/umodsi3.S b/arch/m68k/lib/umodsi3.S new file mode 100644 index 0000000..5def5f6 --- /dev/null +++ b/arch/m68k/lib/umodsi3.S @@ -0,0 +1,113 @@ +/* libgcc1 routines for 68000 w/o floating-point hardware. + Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +In addition to the permissions in the GNU General Public License, the +Free Software Foundation gives you unlimited permission to link the +compiled version of this file with other programs, and to distribute +those programs without any restriction coming from the use of this +file. (The General Public License restrictions do apply in other +respects; for example, they cover modification of the file, and +distribution when not linked into another program.) + +This file is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +/* As a special exception, if you link this library with files + compiled with GCC to produce an executable, this does not cause + the resulting executable to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +/* Use this one for any 680x0; assumes no floating point hardware. + The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk. + Some of this code comes from MINIX, via the folks at ericsson. + D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992 +*/ + +/* These are predefined by new versions of GNU cpp. */ + +#ifndef __USER_LABEL_PREFIX__ +#define __USER_LABEL_PREFIX__ _ +#endif + +#ifndef __REGISTER_PREFIX__ +#define __REGISTER_PREFIX__ +#endif + +#ifndef __IMMEDIATE_PREFIX__ +#define __IMMEDIATE_PREFIX__ # +#endif + +/* ANSI concatenation macros. */ + +#define CONCAT1(a, b) CONCAT2(a, b) +#define CONCAT2(a, b) a ## b + +/* Use the right prefix for global labels. */ + +#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) + +/* Use the right prefix for registers. */ + +#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) + +/* Use the right prefix for immediate values. */ + +#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x) + +#define d0 REG (d0) +#define d1 REG (d1) +#define d2 REG (d2) +#define d3 REG (d3) +#define d4 REG (d4) +#define d5 REG (d5) +#define d6 REG (d6) +#define d7 REG (d7) +#define a0 REG (a0) +#define a1 REG (a1) +#define a2 REG (a2) +#define a3 REG (a3) +#define a4 REG (a4) +#define a5 REG (a5) +#define a6 REG (a6) +#define fp REG (fp) +#define sp REG (sp) + + .text + .proc + .globl SYM (__umodsi3) +SYM (__umodsi3): + movel sp@(8), d1 /* d1 = divisor */ + movel sp@(4), d0 /* d0 = dividend */ + movel d1, sp@- + movel d0, sp@- + jbsr SYM (__udivsi3) + addql IMM (8), sp + movel sp@(8), d1 /* d1 = divisor */ +#if !(defined(__mcf5200__) || defined(__mcoldfire__)) + movel d1, sp@- + movel d0, sp@- + jbsr SYM (__mulsi3) /* d0 = (a/b)*b */ + addql IMM (8), sp +#else + mulsl d1,d0 +#endif + movel sp@(4), d1 /* d1 = dividend */ + subl d0, d1 /* d1 = a - (a/b)*b */ + movel d1, d0 + rts + diff --git a/arch/m68k/mm/Makefile b/arch/m68k/mm/Makefile index 5eaa43c..b60270e 100644 --- a/arch/m68k/mm/Makefile +++ b/arch/m68k/mm/Makefile @@ -1,8 +1,5 @@ -# -# Makefile for the linux m68k-specific parts of the memory manager. -# - -obj-y := cache.o init.o fault.o hwtest.o - -obj-$(CONFIG_MMU_MOTOROLA) += kmap.o memory.o motorola.o -obj-$(CONFIG_MMU_SUN3) += sun3kmap.o sun3mmu.o +ifdef CONFIG_MMU +include arch/m68k/mm/Makefile_mm +else +include arch/m68k/mm/Makefile_no +endif diff --git a/arch/m68k/mm/Makefile_mm b/arch/m68k/mm/Makefile_mm new file mode 100644 index 0000000..5eaa43c --- /dev/null +++ b/arch/m68k/mm/Makefile_mm @@ -0,0 +1,8 @@ +# +# Makefile for the linux m68k-specific parts of the memory manager. +# + +obj-y := cache.o init.o fault.o hwtest.o + +obj-$(CONFIG_MMU_MOTOROLA) += kmap.o memory.o motorola.o +obj-$(CONFIG_MMU_SUN3) += sun3kmap.o sun3mmu.o diff --git a/arch/m68k/mm/Makefile_no b/arch/m68k/mm/Makefile_no new file mode 100644 index 0000000..b54ab6b --- /dev/null +++ b/arch/m68k/mm/Makefile_no @@ -0,0 +1,5 @@ +# +# Makefile for the linux m68knommu specific parts of the memory manager. +# + +obj-y += init.o kmap.o diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c index 8bc8425..27b5ce0 100644 --- a/arch/m68k/mm/init.c +++ b/arch/m68k/mm/init.c @@ -1,150 +1,5 @@ -/* - * linux/arch/m68k/mm/init.c - * - * Copyright (C) 1995 Hamish Macdonald - * - * Contains common initialization routines, specific init code moved - * to motorola.c and sun3mmu.c - */ - -#include <linux/module.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/swap.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/bootmem.h> -#include <linux/gfp.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/page.h> -#include <asm/pgalloc.h> -#include <asm/system.h> -#include <asm/machdep.h> -#include <asm/io.h> -#ifdef CONFIG_ATARI -#include <asm/atari_stram.h> -#endif -#include <asm/sections.h> -#include <asm/tlb.h> - -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); - -pg_data_t pg_data_map[MAX_NUMNODES]; -EXPORT_SYMBOL(pg_data_map); - -int m68k_virt_to_node_shift; - -#ifndef CONFIG_SINGLE_MEMORY_CHUNK -pg_data_t *pg_data_table[65]; -EXPORT_SYMBOL(pg_data_table); -#endif - -void __init m68k_setup_node(int node) -{ -#ifndef CONFIG_SINGLE_MEMORY_CHUNK - struct mem_info *info = m68k_memory + node; - int i, end; - - i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift(); - end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift(); - for (; i <= end; i++) { - if (pg_data_table[i]) - printk("overlap at %u for chunk %u\n", i, node); - pg_data_table[i] = pg_data_map + node; - } -#endif - pg_data_map[node].bdata = bootmem_node_data + node; - node_set_online(node); -} - - -/* - * ZERO_PAGE is a special page that is used for zero-initialized - * data and COW. - */ - -void *empty_zero_page; -EXPORT_SYMBOL(empty_zero_page); - -extern void init_pointer_table(unsigned long ptable); - -/* References to section boundaries */ - -extern pmd_t *zero_pgtable; - -void __init mem_init(void) -{ - pg_data_t *pgdat; - int codepages = 0; - int datapages = 0; - int initpages = 0; - int i; - -#ifdef CONFIG_ATARI - if (MACH_IS_ATARI) - atari_stram_mem_init_hook(); -#endif - - /* this will put all memory onto the freelists */ - totalram_pages = num_physpages = 0; - for_each_online_pgdat(pgdat) { - num_physpages += pgdat->node_present_pages; - - totalram_pages += free_all_bootmem_node(pgdat); - for (i = 0; i < pgdat->node_spanned_pages; i++) { - struct page *page = pgdat->node_mem_map + i; - char *addr = page_to_virt(page); - - if (!PageReserved(page)) - continue; - if (addr >= _text && - addr < _etext) - codepages++; - else if (addr >= __init_begin && - addr < __init_end) - initpages++; - else - datapages++; - } - } - -#ifndef CONFIG_SUN3 - /* insert pointer tables allocated so far into the tablelist */ - init_pointer_table((unsigned long)kernel_pg_dir); - for (i = 0; i < PTRS_PER_PGD; i++) { - if (pgd_present(kernel_pg_dir[i])) - init_pointer_table(__pgd_page(kernel_pg_dir[i])); - } - - /* insert also pointer table that we used to unmap the zero page */ - if (zero_pgtable) - init_pointer_table((unsigned long)zero_pgtable); -#endif - - printk("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init)\n", - nr_free_pages() << (PAGE_SHIFT-10), - totalram_pages << (PAGE_SHIFT-10), - codepages << (PAGE_SHIFT-10), - datapages << (PAGE_SHIFT-10), - initpages << (PAGE_SHIFT-10)); -} - -#ifdef CONFIG_BLK_DEV_INITRD -void free_initrd_mem(unsigned long start, unsigned long end) -{ - int pages = 0; - for (; start < end; start += PAGE_SIZE) { - ClearPageReserved(virt_to_page(start)); - init_page_count(virt_to_page(start)); - free_page(start); - totalram_pages++; - pages++; - } - printk ("Freeing initrd memory: %dk freed\n", pages); -} +#ifdef CONFIG_MMU +#include "init_mm.c" +#else +#include "init_no.c" #endif diff --git a/arch/m68k/mm/init_mm.c b/arch/m68k/mm/init_mm.c new file mode 100644 index 0000000..8bc8425 --- /dev/null +++ b/arch/m68k/mm/init_mm.c @@ -0,0 +1,150 @@ +/* + * linux/arch/m68k/mm/init.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * Contains common initialization routines, specific init code moved + * to motorola.c and sun3mmu.c + */ + +#include <linux/module.h> +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/bootmem.h> +#include <linux/gfp.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/page.h> +#include <asm/pgalloc.h> +#include <asm/system.h> +#include <asm/machdep.h> +#include <asm/io.h> +#ifdef CONFIG_ATARI +#include <asm/atari_stram.h> +#endif +#include <asm/sections.h> +#include <asm/tlb.h> + +DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); + +pg_data_t pg_data_map[MAX_NUMNODES]; +EXPORT_SYMBOL(pg_data_map); + +int m68k_virt_to_node_shift; + +#ifndef CONFIG_SINGLE_MEMORY_CHUNK +pg_data_t *pg_data_table[65]; +EXPORT_SYMBOL(pg_data_table); +#endif + +void __init m68k_setup_node(int node) +{ +#ifndef CONFIG_SINGLE_MEMORY_CHUNK + struct mem_info *info = m68k_memory + node; + int i, end; + + i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift(); + end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift(); + for (; i <= end; i++) { + if (pg_data_table[i]) + printk("overlap at %u for chunk %u\n", i, node); + pg_data_table[i] = pg_data_map + node; + } +#endif + pg_data_map[node].bdata = bootmem_node_data + node; + node_set_online(node); +} + + +/* + * ZERO_PAGE is a special page that is used for zero-initialized + * data and COW. + */ + +void *empty_zero_page; +EXPORT_SYMBOL(empty_zero_page); + +extern void init_pointer_table(unsigned long ptable); + +/* References to section boundaries */ + +extern pmd_t *zero_pgtable; + +void __init mem_init(void) +{ + pg_data_t *pgdat; + int codepages = 0; + int datapages = 0; + int initpages = 0; + int i; + +#ifdef CONFIG_ATARI + if (MACH_IS_ATARI) + atari_stram_mem_init_hook(); +#endif + + /* this will put all memory onto the freelists */ + totalram_pages = num_physpages = 0; + for_each_online_pgdat(pgdat) { + num_physpages += pgdat->node_present_pages; + + totalram_pages += free_all_bootmem_node(pgdat); + for (i = 0; i < pgdat->node_spanned_pages; i++) { + struct page *page = pgdat->node_mem_map + i; + char *addr = page_to_virt(page); + + if (!PageReserved(page)) + continue; + if (addr >= _text && + addr < _etext) + codepages++; + else if (addr >= __init_begin && + addr < __init_end) + initpages++; + else + datapages++; + } + } + +#ifndef CONFIG_SUN3 + /* insert pointer tables allocated so far into the tablelist */ + init_pointer_table((unsigned long)kernel_pg_dir); + for (i = 0; i < PTRS_PER_PGD; i++) { + if (pgd_present(kernel_pg_dir[i])) + init_pointer_table(__pgd_page(kernel_pg_dir[i])); + } + + /* insert also pointer table that we used to unmap the zero page */ + if (zero_pgtable) + init_pointer_table((unsigned long)zero_pgtable); +#endif + + printk("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init)\n", + nr_free_pages() << (PAGE_SHIFT-10), + totalram_pages << (PAGE_SHIFT-10), + codepages << (PAGE_SHIFT-10), + datapages << (PAGE_SHIFT-10), + initpages << (PAGE_SHIFT-10)); +} + +#ifdef CONFIG_BLK_DEV_INITRD +void free_initrd_mem(unsigned long start, unsigned long end) +{ + int pages = 0; + for (; start < end; start += PAGE_SIZE) { + ClearPageReserved(virt_to_page(start)); + init_page_count(virt_to_page(start)); + free_page(start); + totalram_pages++; + pages++; + } + printk ("Freeing initrd memory: %dk freed\n", pages); +} +#endif diff --git a/arch/m68k/mm/init_no.c b/arch/m68k/mm/init_no.c new file mode 100644 index 0000000..8a6653f --- /dev/null +++ b/arch/m68k/mm/init_no.c @@ -0,0 +1,193 @@ +/* + * linux/arch/m68knommu/mm/init.c + * + * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * Copyright (C) 2000 Lineo, Inc. (www.lineo.com) + * + * Based on: + * + * linux/arch/m68k/mm/init.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * JAN/1999 -- hacked to support ColdFire (gerg@snapgear.com) + * DEC/2000 -- linux 2.4 support <davidm@snapgear.com> + */ + +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/ptrace.h> +#include <linux/mman.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/init.h> +#include <linux/highmem.h> +#include <linux/pagemap.h> +#include <linux/bootmem.h> +#include <linux/gfp.h> + +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/system.h> +#include <asm/machdep.h> + +#undef DEBUG + +extern void die_if_kernel(char *,struct pt_regs *,long); +extern void free_initmem(void); + +/* + * BAD_PAGE is the page that is used for page faults when linux + * is out-of-memory. Older versions of linux just did a + * do_exit(), but using this instead means there is less risk + * for a process dying in kernel mode, possibly leaving a inode + * unused etc.. + * + * BAD_PAGETABLE is the accompanying page-table: it is initialized + * to point to BAD_PAGE entries. + * + * ZERO_PAGE is a special page that is used for zero-initialized + * data and COW. + */ +static unsigned long empty_bad_page_table; + +static unsigned long empty_bad_page; + +unsigned long empty_zero_page; + +extern unsigned long memory_start; +extern unsigned long memory_end; + +/* + * paging_init() continues the virtual memory environment setup which + * was begun by the code in arch/head.S. + * The parameters are pointers to where to stick the starting and ending + * addresses of available kernel virtual memory. + */ +void __init paging_init(void) +{ + /* + * Make sure start_mem is page aligned, otherwise bootmem and + * page_alloc get different views of the world. + */ +#ifdef DEBUG + unsigned long start_mem = PAGE_ALIGN(memory_start); +#endif + unsigned long end_mem = memory_end & PAGE_MASK; + +#ifdef DEBUG + printk (KERN_DEBUG "start_mem is %#lx\nvirtual_end is %#lx\n", + start_mem, end_mem); +#endif + + /* + * Initialize the bad page table and bad page to point + * to a couple of allocated pages. + */ + empty_bad_page_table = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); + empty_bad_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); + empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); + memset((void *)empty_zero_page, 0, PAGE_SIZE); + + /* + * Set up SFC/DFC registers (user data space). + */ + set_fs (USER_DS); + +#ifdef DEBUG + printk (KERN_DEBUG "before free_area_init\n"); + + printk (KERN_DEBUG "free_area_init -> start_mem is %#lx\nvirtual_end is %#lx\n", + start_mem, end_mem); +#endif + + { + unsigned long zones_size[MAX_NR_ZONES] = {0, }; + + zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT; + free_area_init(zones_size); + } +} + +void __init mem_init(void) +{ + int codek = 0, datak = 0, initk = 0; + unsigned long tmp; + extern char _etext, _stext, _sdata, _ebss, __init_begin, __init_end; + extern unsigned int _ramend, _rambase; + unsigned long len = _ramend - _rambase; + unsigned long start_mem = memory_start; /* DAVIDM - these must start at end of kernel */ + unsigned long end_mem = memory_end; /* DAVIDM - this must not include kernel stack at top */ + + pr_debug("Mem_init: start=%lx, end=%lx\n", start_mem, end_mem); + + end_mem &= PAGE_MASK; + high_memory = (void *) end_mem; + + start_mem = PAGE_ALIGN(start_mem); + max_mapnr = num_physpages = (((unsigned long) high_memory) - PAGE_OFFSET) >> PAGE_SHIFT; + + /* this will put all memory onto the freelists */ + totalram_pages = free_all_bootmem(); + + codek = (&_etext - &_stext) >> 10; + datak = (&_ebss - &_sdata) >> 10; + initk = (&__init_begin - &__init_end) >> 10; + + tmp = nr_free_pages() << PAGE_SHIFT; + printk(KERN_INFO "Memory available: %luk/%luk RAM, (%dk kernel code, %dk data)\n", + tmp >> 10, + len >> 10, + codek, + datak + ); +} + + +#ifdef CONFIG_BLK_DEV_INITRD +void free_initrd_mem(unsigned long start, unsigned long end) +{ + int pages = 0; + for (; start < end; start += PAGE_SIZE) { + ClearPageReserved(virt_to_page(start)); + init_page_count(virt_to_page(start)); + free_page(start); + totalram_pages++; + pages++; + } + printk (KERN_NOTICE "Freeing initrd memory: %dk freed\n", pages * (PAGE_SIZE / 1024)); +} +#endif + +void +free_initmem() +{ +#ifdef CONFIG_RAMKERNEL + unsigned long addr; + extern char __init_begin, __init_end; + /* + * The following code should be cool even if these sections + * are not page aligned. + */ + addr = PAGE_ALIGN((unsigned long)(&__init_begin)); + /* next to check that the page we free is not a partial page */ + for (; addr + PAGE_SIZE < (unsigned long)(&__init_end); addr +=PAGE_SIZE) { + ClearPageReserved(virt_to_page(addr)); + init_page_count(virt_to_page(addr)); + free_page(addr); + totalram_pages++; + } + printk(KERN_NOTICE "Freeing unused kernel memory: %ldk freed (0x%x - 0x%x)\n", + (addr - PAGE_ALIGN((long) &__init_begin)) >> 10, + (int)(PAGE_ALIGN((unsigned long)(&__init_begin))), + (int)(addr - PAGE_SIZE)); +#endif +} + diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c index 6934584..a373d13 100644 --- a/arch/m68k/mm/kmap.c +++ b/arch/m68k/mm/kmap.c @@ -1,367 +1,5 @@ -/* - * linux/arch/m68k/mm/kmap.c - * - * Copyright (C) 1997 Roman Hodek - * - * 10/01/99 cleaned up the code and changing to the same interface - * used by other architectures /Roman Zippel - */ - -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> - -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/page.h> -#include <asm/pgalloc.h> -#include <asm/io.h> -#include <asm/system.h> - -#undef DEBUG - -#define PTRTREESIZE (256*1024) - -/* - * For 040/060 we can use the virtual memory area like other architectures, - * but for 020/030 we want to use early termination page descriptor and we - * can't mix this with normal page descriptors, so we have to copy that code - * (mm/vmalloc.c) and return appriorate aligned addresses. - */ - -#ifdef CPU_M68040_OR_M68060_ONLY - -#define IO_SIZE PAGE_SIZE - -static inline struct vm_struct *get_io_area(unsigned long size) -{ - return get_vm_area(size, VM_IOREMAP); -} - - -static inline void free_io_area(void *addr) -{ - vfree((void *)(PAGE_MASK & (unsigned long)addr)); -} - +#ifdef CONFIG_MMU +#include "kmap_mm.c" #else - -#define IO_SIZE (256*1024) - -static struct vm_struct *iolist; - -static struct vm_struct *get_io_area(unsigned long size) -{ - unsigned long addr; - struct vm_struct **p, *tmp, *area; - - area = kmalloc(sizeof(*area), GFP_KERNEL); - if (!area) - return NULL; - addr = KMAP_START; - for (p = &iolist; (tmp = *p) ; p = &tmp->next) { - if (size + addr < (unsigned long)tmp->addr) - break; - if (addr > KMAP_END-size) { - kfree(area); - return NULL; - } - addr = tmp->size + (unsigned long)tmp->addr; - } - area->addr = (void *)addr; - area->size = size + IO_SIZE; - area->next = *p; - *p = area; - return area; -} - -static inline void free_io_area(void *addr) -{ - struct vm_struct **p, *tmp; - - if (!addr) - return; - addr = (void *)((unsigned long)addr & -IO_SIZE); - for (p = &iolist ; (tmp = *p) ; p = &tmp->next) { - if (tmp->addr == addr) { - *p = tmp->next; - __iounmap(tmp->addr, tmp->size); - kfree(tmp); - return; - } - } -} - +#include "kmap_no.c" #endif - -/* - * Map some physical address range into the kernel address space. - */ -/* Rewritten by Andreas Schwab to remove all races. */ - -void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) -{ - struct vm_struct *area; - unsigned long virtaddr, retaddr; - long offset; - pgd_t *pgd_dir; - pmd_t *pmd_dir; - pte_t *pte_dir; - - /* - * Don't allow mappings that wrap.. - */ - if (!size || physaddr > (unsigned long)(-size)) - return NULL; - -#ifdef CONFIG_AMIGA - if (MACH_IS_AMIGA) { - if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000) - && (cacheflag == IOMAP_NOCACHE_SER)) - return (void __iomem *)physaddr; - } -#endif - -#ifdef DEBUG - printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag); -#endif - /* - * Mappings have to be aligned - */ - offset = physaddr & (IO_SIZE - 1); - physaddr &= -IO_SIZE; - size = (size + offset + IO_SIZE - 1) & -IO_SIZE; - - /* - * Ok, go for it.. - */ - area = get_io_area(size); - if (!area) - return NULL; - - virtaddr = (unsigned long)area->addr; - retaddr = virtaddr + offset; -#ifdef DEBUG - printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr); -#endif - - /* - * add cache and table flags to physical address - */ - if (CPU_IS_040_OR_060) { - physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 | - _PAGE_ACCESSED | _PAGE_DIRTY); - switch (cacheflag) { - case IOMAP_FULL_CACHING: - physaddr |= _PAGE_CACHE040; - break; - case IOMAP_NOCACHE_SER: - default: - physaddr |= _PAGE_NOCACHE_S; - break; - case IOMAP_NOCACHE_NONSER: - physaddr |= _PAGE_NOCACHE; - break; - case IOMAP_WRITETHROUGH: - physaddr |= _PAGE_CACHE040W; - break; - } - } else { - physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); - switch (cacheflag) { - case IOMAP_NOCACHE_SER: - case IOMAP_NOCACHE_NONSER: - default: - physaddr |= _PAGE_NOCACHE030; - break; - case IOMAP_FULL_CACHING: - case IOMAP_WRITETHROUGH: - break; - } - } - - while ((long)size > 0) { -#ifdef DEBUG - if (!(virtaddr & (PTRTREESIZE-1))) - printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr); -#endif - pgd_dir = pgd_offset_k(virtaddr); - pmd_dir = pmd_alloc(&init_mm, pgd_dir, virtaddr); - if (!pmd_dir) { - printk("ioremap: no mem for pmd_dir\n"); - return NULL; - } - - if (CPU_IS_020_OR_030) { - pmd_dir->pmd[(virtaddr/PTRTREESIZE) & 15] = physaddr; - physaddr += PTRTREESIZE; - virtaddr += PTRTREESIZE; - size -= PTRTREESIZE; - } else { - pte_dir = pte_alloc_kernel(pmd_dir, virtaddr); - if (!pte_dir) { - printk("ioremap: no mem for pte_dir\n"); - return NULL; - } - - pte_val(*pte_dir) = physaddr; - virtaddr += PAGE_SIZE; - physaddr += PAGE_SIZE; - size -= PAGE_SIZE; - } - } -#ifdef DEBUG - printk("\n"); -#endif - flush_tlb_all(); - - return (void __iomem *)retaddr; -} -EXPORT_SYMBOL(__ioremap); - -/* - * Unmap a ioremap()ed region again - */ -void iounmap(void __iomem *addr) -{ -#ifdef CONFIG_AMIGA - if ((!MACH_IS_AMIGA) || - (((unsigned long)addr < 0x40000000) || - ((unsigned long)addr > 0x60000000))) - free_io_area((__force void *)addr); -#else - free_io_area((__force void *)addr); -#endif -} -EXPORT_SYMBOL(iounmap); - -/* - * __iounmap unmaps nearly everything, so be careful - * it doesn't free currently pointer/page tables anymore but it - * wans't used anyway and might be added later. - */ -void __iounmap(void *addr, unsigned long size) -{ - unsigned long virtaddr = (unsigned long)addr; - pgd_t *pgd_dir; - pmd_t *pmd_dir; - pte_t *pte_dir; - - while ((long)size > 0) { - pgd_dir = pgd_offset_k(virtaddr); - if (pgd_bad(*pgd_dir)) { - printk("iounmap: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); - pgd_clear(pgd_dir); - return; - } - pmd_dir = pmd_offset(pgd_dir, virtaddr); - - if (CPU_IS_020_OR_030) { - int pmd_off = (virtaddr/PTRTREESIZE) & 15; - int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK; - - if (pmd_type == _PAGE_PRESENT) { - pmd_dir->pmd[pmd_off] = 0; - virtaddr += PTRTREESIZE; - size -= PTRTREESIZE; - continue; - } else if (pmd_type == 0) - continue; - } - - if (pmd_bad(*pmd_dir)) { - printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); - pmd_clear(pmd_dir); - return; - } - pte_dir = pte_offset_kernel(pmd_dir, virtaddr); - - pte_val(*pte_dir) = 0; - virtaddr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - flush_tlb_all(); -} - -/* - * Set new cache mode for some kernel address space. - * The caller must push data for that range itself, if such data may already - * be in the cache. - */ -void kernel_set_cachemode(void *addr, unsigned long size, int cmode) -{ - unsigned long virtaddr = (unsigned long)addr; - pgd_t *pgd_dir; - pmd_t *pmd_dir; - pte_t *pte_dir; - - if (CPU_IS_040_OR_060) { - switch (cmode) { - case IOMAP_FULL_CACHING: - cmode = _PAGE_CACHE040; - break; - case IOMAP_NOCACHE_SER: - default: - cmode = _PAGE_NOCACHE_S; - break; - case IOMAP_NOCACHE_NONSER: - cmode = _PAGE_NOCACHE; - break; - case IOMAP_WRITETHROUGH: - cmode = _PAGE_CACHE040W; - break; - } - } else { - switch (cmode) { - case IOMAP_NOCACHE_SER: - case IOMAP_NOCACHE_NONSER: - default: - cmode = _PAGE_NOCACHE030; - break; - case IOMAP_FULL_CACHING: - case IOMAP_WRITETHROUGH: - cmode = 0; - } - } - - while ((long)size > 0) { - pgd_dir = pgd_offset_k(virtaddr); - if (pgd_bad(*pgd_dir)) { - printk("iocachemode: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); - pgd_clear(pgd_dir); - return; - } - pmd_dir = pmd_offset(pgd_dir, virtaddr); - - if (CPU_IS_020_OR_030) { - int pmd_off = (virtaddr/PTRTREESIZE) & 15; - - if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) { - pmd_dir->pmd[pmd_off] = (pmd_dir->pmd[pmd_off] & - _CACHEMASK040) | cmode; - virtaddr += PTRTREESIZE; - size -= PTRTREESIZE; - continue; - } - } - - if (pmd_bad(*pmd_dir)) { - printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); - pmd_clear(pmd_dir); - return; - } - pte_dir = pte_offset_kernel(pmd_dir, virtaddr); - - pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode; - virtaddr += PAGE_SIZE; - size -= PAGE_SIZE; - } - - flush_tlb_all(); -} -EXPORT_SYMBOL(kernel_set_cachemode); diff --git a/arch/m68k/mm/kmap_mm.c b/arch/m68k/mm/kmap_mm.c new file mode 100644 index 0000000..6934584 --- /dev/null +++ b/arch/m68k/mm/kmap_mm.c @@ -0,0 +1,367 @@ +/* + * linux/arch/m68k/mm/kmap.c + * + * Copyright (C) 1997 Roman Hodek + * + * 10/01/99 cleaned up the code and changing to the same interface + * used by other architectures /Roman Zippel + */ + +#include <linux/module.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> + +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/page.h> +#include <asm/pgalloc.h> +#include <asm/io.h> +#include <asm/system.h> + +#undef DEBUG + +#define PTRTREESIZE (256*1024) + +/* + * For 040/060 we can use the virtual memory area like other architectures, + * but for 020/030 we want to use early termination page descriptor and we + * can't mix this with normal page descriptors, so we have to copy that code + * (mm/vmalloc.c) and return appriorate aligned addresses. + */ + +#ifdef CPU_M68040_OR_M68060_ONLY + +#define IO_SIZE PAGE_SIZE + +static inline struct vm_struct *get_io_area(unsigned long size) +{ + return get_vm_area(size, VM_IOREMAP); +} + + +static inline void free_io_area(void *addr) +{ + vfree((void *)(PAGE_MASK & (unsigned long)addr)); +} + +#else + +#define IO_SIZE (256*1024) + +static struct vm_struct *iolist; + +static struct vm_struct *get_io_area(unsigned long size) +{ + unsigned long addr; + struct vm_struct **p, *tmp, *area; + + area = kmalloc(sizeof(*area), GFP_KERNEL); + if (!area) + return NULL; + addr = KMAP_START; + for (p = &iolist; (tmp = *p) ; p = &tmp->next) { + if (size + addr < (unsigned long)tmp->addr) + break; + if (addr > KMAP_END-size) { + kfree(area); + return NULL; + } + addr = tmp->size + (unsigned long)tmp->addr; + } + area->addr = (void *)addr; + area->size = size + IO_SIZE; + area->next = *p; + *p = area; + return area; +} + +static inline void free_io_area(void *addr) +{ + struct vm_struct **p, *tmp; + + if (!addr) + return; + addr = (void *)((unsigned long)addr & -IO_SIZE); + for (p = &iolist ; (tmp = *p) ; p = &tmp->next) { + if (tmp->addr == addr) { + *p = tmp->next; + __iounmap(tmp->addr, tmp->size); + kfree(tmp); + return; + } + } +} + +#endif + +/* + * Map some physical address range into the kernel address space. + */ +/* Rewritten by Andreas Schwab to remove all races. */ + +void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) +{ + struct vm_struct *area; + unsigned long virtaddr, retaddr; + long offset; + pgd_t *pgd_dir; + pmd_t *pmd_dir; + pte_t *pte_dir; + + /* + * Don't allow mappings that wrap.. + */ + if (!size || physaddr > (unsigned long)(-size)) + return NULL; + +#ifdef CONFIG_AMIGA + if (MACH_IS_AMIGA) { + if ((physaddr >= 0x40000000) && (physaddr + size < 0x60000000) + && (cacheflag == IOMAP_NOCACHE_SER)) + return (void __iomem *)physaddr; + } +#endif + +#ifdef DEBUG + printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag); +#endif + /* + * Mappings have to be aligned + */ + offset = physaddr & (IO_SIZE - 1); + physaddr &= -IO_SIZE; + size = (size + offset + IO_SIZE - 1) & -IO_SIZE; + + /* + * Ok, go for it.. + */ + area = get_io_area(size); + if (!area) + return NULL; + + virtaddr = (unsigned long)area->addr; + retaddr = virtaddr + offset; +#ifdef DEBUG + printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr); +#endif + + /* + * add cache and table flags to physical address + */ + if (CPU_IS_040_OR_060) { + physaddr |= (_PAGE_PRESENT | _PAGE_GLOBAL040 | + _PAGE_ACCESSED | _PAGE_DIRTY); + switch (cacheflag) { + case IOMAP_FULL_CACHING: + physaddr |= _PAGE_CACHE040; + break; + case IOMAP_NOCACHE_SER: + default: + physaddr |= _PAGE_NOCACHE_S; + break; + case IOMAP_NOCACHE_NONSER: + physaddr |= _PAGE_NOCACHE; + break; + case IOMAP_WRITETHROUGH: + physaddr |= _PAGE_CACHE040W; + break; + } + } else { + physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); + switch (cacheflag) { + case IOMAP_NOCACHE_SER: + case IOMAP_NOCACHE_NONSER: + default: + physaddr |= _PAGE_NOCACHE030; + break; + case IOMAP_FULL_CACHING: + case IOMAP_WRITETHROUGH: + break; + } + } + + while ((long)size > 0) { +#ifdef DEBUG + if (!(virtaddr & (PTRTREESIZE-1))) + printk ("\npa=%#lx va=%#lx ", physaddr, virtaddr); +#endif + pgd_dir = pgd_offset_k(virtaddr); + pmd_dir = pmd_alloc(&init_mm, pgd_dir, virtaddr); + if (!pmd_dir) { + printk("ioremap: no mem for pmd_dir\n"); + return NULL; + } + + if (CPU_IS_020_OR_030) { + pmd_dir->pmd[(virtaddr/PTRTREESIZE) & 15] = physaddr; + physaddr += PTRTREESIZE; + virtaddr += PTRTREESIZE; + size -= PTRTREESIZE; + } else { + pte_dir = pte_alloc_kernel(pmd_dir, virtaddr); + if (!pte_dir) { + printk("ioremap: no mem for pte_dir\n"); + return NULL; + } + + pte_val(*pte_dir) = physaddr; + virtaddr += PAGE_SIZE; + physaddr += PAGE_SIZE; + size -= PAGE_SIZE; + } + } +#ifdef DEBUG + printk("\n"); +#endif + flush_tlb_all(); + + return (void __iomem *)retaddr; +} +EXPORT_SYMBOL(__ioremap); + +/* + * Unmap a ioremap()ed region again + */ +void iounmap(void __iomem *addr) +{ +#ifdef CONFIG_AMIGA + if ((!MACH_IS_AMIGA) || + (((unsigned long)addr < 0x40000000) || + ((unsigned long)addr > 0x60000000))) + free_io_area((__force void *)addr); +#else + free_io_area((__force void *)addr); +#endif +} +EXPORT_SYMBOL(iounmap); + +/* + * __iounmap unmaps nearly everything, so be careful + * it doesn't free currently pointer/page tables anymore but it + * wans't used anyway and might be added later. + */ +void __iounmap(void *addr, unsigned long size) +{ + unsigned long virtaddr = (unsigned long)addr; + pgd_t *pgd_dir; + pmd_t *pmd_dir; + pte_t *pte_dir; + + while ((long)size > 0) { + pgd_dir = pgd_offset_k(virtaddr); + if (pgd_bad(*pgd_dir)) { + printk("iounmap: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); + pgd_clear(pgd_dir); + return; + } + pmd_dir = pmd_offset(pgd_dir, virtaddr); + + if (CPU_IS_020_OR_030) { + int pmd_off = (virtaddr/PTRTREESIZE) & 15; + int pmd_type = pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK; + + if (pmd_type == _PAGE_PRESENT) { + pmd_dir->pmd[pmd_off] = 0; + virtaddr += PTRTREESIZE; + size -= PTRTREESIZE; + continue; + } else if (pmd_type == 0) + continue; + } + + if (pmd_bad(*pmd_dir)) { + printk("iounmap: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); + pmd_clear(pmd_dir); + return; + } + pte_dir = pte_offset_kernel(pmd_dir, virtaddr); + + pte_val(*pte_dir) = 0; + virtaddr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + flush_tlb_all(); +} + +/* + * Set new cache mode for some kernel address space. + * The caller must push data for that range itself, if such data may already + * be in the cache. + */ +void kernel_set_cachemode(void *addr, unsigned long size, int cmode) +{ + unsigned long virtaddr = (unsigned long)addr; + pgd_t *pgd_dir; + pmd_t *pmd_dir; + pte_t *pte_dir; + + if (CPU_IS_040_OR_060) { + switch (cmode) { + case IOMAP_FULL_CACHING: + cmode = _PAGE_CACHE040; + break; + case IOMAP_NOCACHE_SER: + default: + cmode = _PAGE_NOCACHE_S; + break; + case IOMAP_NOCACHE_NONSER: + cmode = _PAGE_NOCACHE; + break; + case IOMAP_WRITETHROUGH: + cmode = _PAGE_CACHE040W; + break; + } + } else { + switch (cmode) { + case IOMAP_NOCACHE_SER: + case IOMAP_NOCACHE_NONSER: + default: + cmode = _PAGE_NOCACHE030; + break; + case IOMAP_FULL_CACHING: + case IOMAP_WRITETHROUGH: + cmode = 0; + } + } + + while ((long)size > 0) { + pgd_dir = pgd_offset_k(virtaddr); + if (pgd_bad(*pgd_dir)) { + printk("iocachemode: bad pgd(%08lx)\n", pgd_val(*pgd_dir)); + pgd_clear(pgd_dir); + return; + } + pmd_dir = pmd_offset(pgd_dir, virtaddr); + + if (CPU_IS_020_OR_030) { + int pmd_off = (virtaddr/PTRTREESIZE) & 15; + + if ((pmd_dir->pmd[pmd_off] & _DESCTYPE_MASK) == _PAGE_PRESENT) { + pmd_dir->pmd[pmd_off] = (pmd_dir->pmd[pmd_off] & + _CACHEMASK040) | cmode; + virtaddr += PTRTREESIZE; + size -= PTRTREESIZE; + continue; + } + } + + if (pmd_bad(*pmd_dir)) { + printk("iocachemode: bad pmd (%08lx)\n", pmd_val(*pmd_dir)); + pmd_clear(pmd_dir); + return; + } + pte_dir = pte_offset_kernel(pmd_dir, virtaddr); + + pte_val(*pte_dir) = (pte_val(*pte_dir) & _CACHEMASK040) | cmode; + virtaddr += PAGE_SIZE; + size -= PAGE_SIZE; + } + + flush_tlb_all(); +} +EXPORT_SYMBOL(kernel_set_cachemode); diff --git a/arch/m68k/mm/kmap_no.c b/arch/m68k/mm/kmap_no.c new file mode 100644 index 0000000..ece8d5a --- /dev/null +++ b/arch/m68k/mm/kmap_no.c @@ -0,0 +1,45 @@ +/* + * linux/arch/m68knommu/mm/kmap.c + * + * Copyright (C) 2000 Lineo, <davidm@snapgear.com> + * Copyright (C) 2000-2002 David McCullough <davidm@snapgear.com> + */ + +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/vmalloc.h> + +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/page.h> +#include <asm/pgalloc.h> +#include <asm/io.h> +#include <asm/system.h> + +#undef DEBUG + +/* + * Map some physical address range into the kernel address space. + */ +void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) +{ + return (void *)physaddr; +} + +/* + * Unmap a ioremap()ed region again. + */ +void iounmap(void *addr) +{ +} + +/* + * Set new cache mode for some kernel address space. + * The caller must push data for that range itself, if such data may already + * be in the cache. + */ +void kernel_set_cachemode(void *addr, unsigned long size, int cmode) +{ +} diff --git a/arch/m68k/platform/5206/Makefile b/arch/m68k/platform/5206/Makefile new file mode 100644 index 0000000..b5db056 --- /dev/null +++ b/arch/m68k/platform/5206/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o + diff --git a/arch/m68k/platform/5206/config.c b/arch/m68k/platform/5206/config.c new file mode 100644 index 0000000..9c33546 --- /dev/null +++ b/arch/m68k/platform/5206/config.c @@ -0,0 +1,121 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/5206/config.c + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2000-2001, Lineo Inc. (www.lineo.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m5206_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 73, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 74, + }, + { }, +}; + +static struct platform_device m5206_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m5206_uart_platform, +}; + +static struct platform_device *m5206_devices[] __initdata = { + &m5206_uart, +}; + +/***************************************************************************/ + +static void __init m5206_uart_init_line(int line, int irq) +{ + if (line == 0) { + writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR); + writeb(irq, MCFUART_BASE1 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART0); + } else if (line == 1) { + writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR); + writeb(irq, MCFUART_BASE2 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART1); + } +} + +static void __init m5206_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m5206_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m5206_uart_init_line(line, m5206_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m5206_timers_init(void) +{ + /* Timer1 is always used as system timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER1ICR); + mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1); + +#ifdef CONFIG_HIGHPROFILE + /* Timer2 is to be used as a high speed profile timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER2ICR); + mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2); +#endif +} + +/***************************************************************************/ + +void m5206_cpu_reset(void) +{ + local_irq_disable(); + /* Set watchdog to soft reset, and enabled */ + __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR); + for (;;) + /* wait for watchdog to timeout */; +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = m5206_cpu_reset; + m5206_timers_init(); + m5206_uarts_init(); + + /* Only support the external interrupts on their primary level */ + mcf_mapirq2imr(25, MCFINTC_EINT1); + mcf_mapirq2imr(28, MCFINTC_EINT4); + mcf_mapirq2imr(31, MCFINTC_EINT7); +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m5206_devices, ARRAY_SIZE(m5206_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/5206/gpio.c b/arch/m68k/platform/5206/gpio.c new file mode 100644 index 0000000..b9ab4a1 --- /dev/null +++ b/arch/m68k/platform/5206/gpio.c @@ -0,0 +1,49 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PP", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFSIM_PADDR, + .podr = (void __iomem *) MCFSIM_PADAT, + .ppdr = (void __iomem *) MCFSIM_PADAT, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/5206e/Makefile b/arch/m68k/platform/5206e/Makefile new file mode 100644 index 0000000..b5db056 --- /dev/null +++ b/arch/m68k/platform/5206e/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o + diff --git a/arch/m68k/platform/5206e/config.c b/arch/m68k/platform/5206e/config.c new file mode 100644 index 0000000..9423979 --- /dev/null +++ b/arch/m68k/platform/5206e/config.c @@ -0,0 +1,127 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/5206e/config.c + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfdma.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m5206e_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 73, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 74, + }, + { }, +}; + +static struct platform_device m5206e_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m5206e_uart_platform, +}; + +static struct platform_device *m5206e_devices[] __initdata = { + &m5206e_uart, +}; + +/***************************************************************************/ + +static void __init m5206e_uart_init_line(int line, int irq) +{ + if (line == 0) { + writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR); + writeb(irq, MCFUART_BASE1 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART0); + } else if (line == 1) { + writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR); + writeb(irq, MCFUART_BASE2 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART1); + } +} + +static void __init m5206e_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m5206e_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m5206e_uart_init_line(line, m5206e_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m5206e_timers_init(void) +{ + /* Timer1 is always used as system timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER1ICR); + mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1); + +#ifdef CONFIG_HIGHPROFILE + /* Timer2 is to be used as a high speed profile timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER2ICR); + mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2); +#endif +} + +/***************************************************************************/ + +void m5206e_cpu_reset(void) +{ + local_irq_disable(); + /* Set watchdog to soft reset, and enabled */ + __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR); + for (;;) + /* wait for watchdog to timeout */; +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ +#if defined(CONFIG_NETtel) + /* Copy command line from FLASH to local buffer... */ + memcpy(commandp, (char *) 0xf0004000, size); + commandp[size-1] = 0; +#endif /* CONFIG_NETtel */ + + mach_reset = m5206e_cpu_reset; + m5206e_timers_init(); + m5206e_uarts_init(); + + /* Only support the external interrupts on their primary level */ + mcf_mapirq2imr(25, MCFINTC_EINT1); + mcf_mapirq2imr(28, MCFINTC_EINT4); + mcf_mapirq2imr(31, MCFINTC_EINT7); +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m5206e_devices, ARRAY_SIZE(m5206e_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/5206e/gpio.c b/arch/m68k/platform/5206e/gpio.c new file mode 100644 index 0000000..b9ab4a1 --- /dev/null +++ b/arch/m68k/platform/5206e/gpio.c @@ -0,0 +1,49 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PP", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFSIM_PADDR, + .podr = (void __iomem *) MCFSIM_PADAT, + .ppdr = (void __iomem *) MCFSIM_PADAT, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/520x/Makefile b/arch/m68k/platform/520x/Makefile new file mode 100644 index 0000000..ad3f4e5 --- /dev/null +++ b/arch/m68k/platform/520x/Makefile @@ -0,0 +1,17 @@ +# +# Makefile for the M5208 specific file. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o diff --git a/arch/m68k/platform/520x/config.c b/arch/m68k/platform/520x/config.c new file mode 100644 index 0000000..621238f --- /dev/null +++ b/arch/m68k/platform/520x/config.c @@ -0,0 +1,311 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/520x/config.c + * + * Copyright (C) 2005, Freescale (www.freescale.com) + * Copyright (C) 2005, Intec Automation (mike@steroidmicros.com) + * Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfqspi.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m520x_uart_platform[] = { + { + .mapbase = MCFUART_BASE1, + .irq = MCFINT_VECBASE + MCFINT_UART0, + }, + { + .mapbase = MCFUART_BASE2, + .irq = MCFINT_VECBASE + MCFINT_UART1, + }, + { + .mapbase = MCFUART_BASE3, + .irq = MCFINT_VECBASE + MCFINT_UART2, + }, + { }, +}; + +static struct platform_device m520x_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m520x_uart_platform, +}; + +static struct resource m520x_fec_resources[] = { + { + .start = MCFFEC_BASE, + .end = MCFFEC_BASE + MCFFEC_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = 64 + 36, + .end = 64 + 36, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 40, + .end = 64 + 40, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 42, + .end = 64 + 42, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device m520x_fec = { + .name = "fec", + .id = 0, + .num_resources = ARRAY_SIZE(m520x_fec_resources), + .resource = m520x_fec_resources, +}; + +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) +static struct resource m520x_qspi_resources[] = { + { + .start = MCFQSPI_IOBASE, + .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = MCFINT_VECBASE + MCFINT_QSPI, + .end = MCFINT_VECBASE + MCFINT_QSPI, + .flags = IORESOURCE_IRQ, + }, +}; + +#define MCFQSPI_CS0 62 +#define MCFQSPI_CS1 63 +#define MCFQSPI_CS2 44 + +static int m520x_cs_setup(struct mcfqspi_cs_control *cs_control) +{ + int status; + + status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); + goto fail0; + } + status = gpio_direction_output(MCFQSPI_CS0, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); + goto fail1; + } + + status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); + goto fail1; + } + status = gpio_direction_output(MCFQSPI_CS1, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); + goto fail2; + } + + status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); + goto fail2; + } + status = gpio_direction_output(MCFQSPI_CS2, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); + goto fail3; + } + + return 0; + +fail3: + gpio_free(MCFQSPI_CS2); +fail2: + gpio_free(MCFQSPI_CS1); +fail1: + gpio_free(MCFQSPI_CS0); +fail0: + return status; +} + +static void m520x_cs_teardown(struct mcfqspi_cs_control *cs_control) +{ + gpio_free(MCFQSPI_CS2); + gpio_free(MCFQSPI_CS1); + gpio_free(MCFQSPI_CS0); +} + +static void m520x_cs_select(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, cs_high); + break; + } +} + +static void m520x_cs_deselect(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, !cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, !cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, !cs_high); + break; + } +} + +static struct mcfqspi_cs_control m520x_cs_control = { + .setup = m520x_cs_setup, + .teardown = m520x_cs_teardown, + .select = m520x_cs_select, + .deselect = m520x_cs_deselect, +}; + +static struct mcfqspi_platform_data m520x_qspi_data = { + .bus_num = 0, + .num_chipselect = 3, + .cs_control = &m520x_cs_control, +}; + +static struct platform_device m520x_qspi = { + .name = "mcfqspi", + .id = 0, + .num_resources = ARRAY_SIZE(m520x_qspi_resources), + .resource = m520x_qspi_resources, + .dev.platform_data = &m520x_qspi_data, +}; + +static void __init m520x_qspi_init(void) +{ + u16 par; + /* setup Port QS for QSPI with gpio CS control */ + writeb(0x3f, MCF_GPIO_PAR_QSPI); + /* make U1CTS and U2RTS gpio for cs_control */ + par = readw(MCF_GPIO_PAR_UART); + par &= 0x00ff; + writew(par, MCF_GPIO_PAR_UART); +} +#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ + + +static struct platform_device *m520x_devices[] __initdata = { + &m520x_uart, + &m520x_fec, +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + &m520x_qspi, +#endif +}; + +/***************************************************************************/ + +static void __init m520x_uart_init_line(int line, int irq) +{ + u16 par; + u8 par2; + + switch (line) { + case 0: + par = readw(MCF_GPIO_PAR_UART); + par |= MCF_GPIO_PAR_UART_PAR_UTXD0 | + MCF_GPIO_PAR_UART_PAR_URXD0; + writew(par, MCF_GPIO_PAR_UART); + break; + case 1: + par = readw(MCF_GPIO_PAR_UART); + par |= MCF_GPIO_PAR_UART_PAR_UTXD1 | + MCF_GPIO_PAR_UART_PAR_URXD1; + writew(par, MCF_GPIO_PAR_UART); + break; + case 2: + par2 = readb(MCF_GPIO_PAR_FECI2C); + par2 &= ~0x0F; + par2 |= MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2 | + MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2; + writeb(par2, MCF_GPIO_PAR_FECI2C); + break; + } +} + +static void __init m520x_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m520x_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m520x_uart_init_line(line, m520x_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m520x_fec_init(void) +{ + u8 v; + + /* Set multi-function pins to ethernet mode */ + v = readb(MCF_GPIO_PAR_FEC); + writeb(v | 0xf0, MCF_GPIO_PAR_FEC); + + v = readb(MCF_GPIO_PAR_FECI2C); + writeb(v | 0x0f, MCF_GPIO_PAR_FECI2C); +} + +/***************************************************************************/ + +static void m520x_cpu_reset(void) +{ + local_irq_disable(); + __raw_writeb(MCF_RCR_SWRESET, MCF_RCR); +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = m520x_cpu_reset; + m520x_uarts_init(); + m520x_fec_init(); +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + m520x_qspi_init(); +#endif +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m520x_devices, ARRAY_SIZE(m520x_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/520x/gpio.c b/arch/m68k/platform/520x/gpio.c new file mode 100644 index 0000000..d757328 --- /dev/null +++ b/arch/m68k/platform/520x/gpio.c @@ -0,0 +1,211 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PIRQ", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFEPORT_EPDDR, + .podr = (void __iomem *) MCFEPORT_EPDR, + .ppdr = (void __iomem *) MCFEPORT_EPPDR, + }, + { + .gpio_chip = { + .label = "BUSCTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 8, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BUSCTL, + .podr = (void __iomem *) MCFGPIO_PODR_BUSCTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BUSCTL, + }, + { + .gpio_chip = { + .label = "BE", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 16, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BE, + .podr = (void __iomem *) MCFGPIO_PODR_BE, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BE, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BE, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BE, + }, + { + .gpio_chip = { + .label = "CS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 25, + .ngpio = 3, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_CS, + .podr = (void __iomem *) MCFGPIO_PODR_CS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_CS, + }, + { + .gpio_chip = { + .label = "FECI2C", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 32, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECI2C, + .podr = (void __iomem *) MCFGPIO_PODR_FECI2C, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECI2C, + }, + { + .gpio_chip = { + .label = "QSPI", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 40, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_QSPI, + .podr = (void __iomem *) MCFGPIO_PODR_QSPI, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .setr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .clrr = (void __iomem *) MCFGPIO_PCLRR_QSPI, + }, + { + .gpio_chip = { + .label = "TIMER", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 48, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_TIMER, + .podr = (void __iomem *) MCFGPIO_PODR_TIMER, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .setr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .clrr = (void __iomem *) MCFGPIO_PCLRR_TIMER, + }, + { + .gpio_chip = { + .label = "UART", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 56, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UART, + .podr = (void __iomem *) MCFGPIO_PODR_UART, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UART, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UART, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UART, + }, + { + .gpio_chip = { + .label = "FECH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 64, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECH, + .podr = (void __iomem *) MCFGPIO_PODR_FECH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECH, + }, + { + .gpio_chip = { + .label = "FECL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 72, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECL, + .podr = (void __iomem *) MCFGPIO_PODR_FECL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECL, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/523x/Makefile b/arch/m68k/platform/523x/Makefile new file mode 100644 index 0000000..c04b8f7 --- /dev/null +++ b/arch/m68k/platform/523x/Makefile @@ -0,0 +1,17 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o diff --git a/arch/m68k/platform/523x/config.c b/arch/m68k/platform/523x/config.c new file mode 100644 index 0000000..418a76f --- /dev/null +++ b/arch/m68k/platform/523x/config.c @@ -0,0 +1,293 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/523x/config.c + * + * Sub-architcture dependant initialization code for the Freescale + * 523x CPUs. + * + * Copyright (C) 1999-2005, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfqspi.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m523x_uart_platform[] = { + { + .mapbase = MCFUART_BASE1, + .irq = MCFINT_VECBASE + MCFINT_UART0, + }, + { + .mapbase = MCFUART_BASE2, + .irq = MCFINT_VECBASE + MCFINT_UART0 + 1, + }, + { + .mapbase = MCFUART_BASE3, + .irq = MCFINT_VECBASE + MCFINT_UART0 + 2, + }, + { }, +}; + +static struct platform_device m523x_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m523x_uart_platform, +}; + +static struct resource m523x_fec_resources[] = { + { + .start = MCFFEC_BASE, + .end = MCFFEC_BASE + MCFFEC_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = 64 + 23, + .end = 64 + 23, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 27, + .end = 64 + 27, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 29, + .end = 64 + 29, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device m523x_fec = { + .name = "fec", + .id = 0, + .num_resources = ARRAY_SIZE(m523x_fec_resources), + .resource = m523x_fec_resources, +}; + +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) +static struct resource m523x_qspi_resources[] = { + { + .start = MCFQSPI_IOBASE, + .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = MCFINT_VECBASE + MCFINT_QSPI, + .end = MCFINT_VECBASE + MCFINT_QSPI, + .flags = IORESOURCE_IRQ, + }, +}; + +#define MCFQSPI_CS0 91 +#define MCFQSPI_CS1 92 +#define MCFQSPI_CS2 103 +#define MCFQSPI_CS3 99 + +static int m523x_cs_setup(struct mcfqspi_cs_control *cs_control) +{ + int status; + + status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); + goto fail0; + } + status = gpio_direction_output(MCFQSPI_CS0, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); + goto fail1; + } + + status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); + goto fail1; + } + status = gpio_direction_output(MCFQSPI_CS1, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); + goto fail2; + } + + status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); + goto fail2; + } + status = gpio_direction_output(MCFQSPI_CS2, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); + goto fail3; + } + + status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS3 failed\n"); + goto fail3; + } + status = gpio_direction_output(MCFQSPI_CS3, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n"); + goto fail4; + } + + return 0; + +fail4: + gpio_free(MCFQSPI_CS3); +fail3: + gpio_free(MCFQSPI_CS2); +fail2: + gpio_free(MCFQSPI_CS1); +fail1: + gpio_free(MCFQSPI_CS0); +fail0: + return status; +} + +static void m523x_cs_teardown(struct mcfqspi_cs_control *cs_control) +{ + gpio_free(MCFQSPI_CS3); + gpio_free(MCFQSPI_CS2); + gpio_free(MCFQSPI_CS1); + gpio_free(MCFQSPI_CS0); +} + +static void m523x_cs_select(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, cs_high); + break; + case 3: + gpio_set_value(MCFQSPI_CS3, cs_high); + break; + } +} + +static void m523x_cs_deselect(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, !cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, !cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, !cs_high); + break; + case 3: + gpio_set_value(MCFQSPI_CS3, !cs_high); + break; + } +} + +static struct mcfqspi_cs_control m523x_cs_control = { + .setup = m523x_cs_setup, + .teardown = m523x_cs_teardown, + .select = m523x_cs_select, + .deselect = m523x_cs_deselect, +}; + +static struct mcfqspi_platform_data m523x_qspi_data = { + .bus_num = 0, + .num_chipselect = 4, + .cs_control = &m523x_cs_control, +}; + +static struct platform_device m523x_qspi = { + .name = "mcfqspi", + .id = 0, + .num_resources = ARRAY_SIZE(m523x_qspi_resources), + .resource = m523x_qspi_resources, + .dev.platform_data = &m523x_qspi_data, +}; + +static void __init m523x_qspi_init(void) +{ + u16 par; + + /* setup QSPS pins for QSPI with gpio CS control */ + writeb(0x1f, MCFGPIO_PAR_QSPI); + /* and CS2 & CS3 as gpio */ + par = readw(MCFGPIO_PAR_TIMER); + par &= 0x3f3f; + writew(par, MCFGPIO_PAR_TIMER); +} +#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ + +static struct platform_device *m523x_devices[] __initdata = { + &m523x_uart, + &m523x_fec, +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + &m523x_qspi, +#endif +}; + +/***************************************************************************/ + +static void __init m523x_fec_init(void) +{ + u16 par; + u8 v; + + /* Set multi-function pins to ethernet use */ + par = readw(MCF_IPSBAR + 0x100082); + writew(par | 0xf00, MCF_IPSBAR + 0x100082); + v = readb(MCF_IPSBAR + 0x100078); + writeb(v | 0xc0, MCF_IPSBAR + 0x100078); +} + +/***************************************************************************/ + +static void m523x_cpu_reset(void) +{ + local_irq_disable(); + __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR); +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = m523x_cpu_reset; +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + m523x_fec_init(); +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + m523x_qspi_init(); +#endif + platform_add_devices(m523x_devices, ARRAY_SIZE(m523x_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/523x/gpio.c b/arch/m68k/platform/523x/gpio.c new file mode 100644 index 0000000..327ebf1 --- /dev/null +++ b/arch/m68k/platform/523x/gpio.c @@ -0,0 +1,284 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PIRQ", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .base = 1, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFEPORT_EPDDR, + .podr = (void __iomem *) MCFEPORT_EPDR, + .ppdr = (void __iomem *) MCFEPORT_EPPDR, + }, + { + .gpio_chip = { + .label = "ADDR", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 13, + .ngpio = 3, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_ADDR, + .podr = (void __iomem *) MCFGPIO_PODR_ADDR, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_ADDR, + .setr = (void __iomem *) MCFGPIO_PPDSDR_ADDR, + .clrr = (void __iomem *) MCFGPIO_PCLRR_ADDR, + }, + { + .gpio_chip = { + .label = "DATAH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 16, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_DATAH, + .podr = (void __iomem *) MCFGPIO_PODR_DATAH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_DATAH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_DATAH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_DATAH, + }, + { + .gpio_chip = { + .label = "DATAL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 24, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_DATAL, + .podr = (void __iomem *) MCFGPIO_PODR_DATAL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_DATAL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_DATAL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_DATAL, + }, + { + .gpio_chip = { + .label = "BUSCTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 32, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BUSCTL, + .podr = (void __iomem *) MCFGPIO_PODR_BUSCTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BUSCTL, + }, + { + .gpio_chip = { + .label = "BS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 40, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BS, + .podr = (void __iomem *) MCFGPIO_PODR_BS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BS, + }, + { + .gpio_chip = { + .label = "CS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 49, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_CS, + .podr = (void __iomem *) MCFGPIO_PODR_CS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_CS, + }, + { + .gpio_chip = { + .label = "SDRAM", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 56, + .ngpio = 6, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_SDRAM, + .podr = (void __iomem *) MCFGPIO_PODR_SDRAM, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_SDRAM, + .setr = (void __iomem *) MCFGPIO_PPDSDR_SDRAM, + .clrr = (void __iomem *) MCFGPIO_PCLRR_SDRAM, + }, + { + .gpio_chip = { + .label = "FECI2C", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 64, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECI2C, + .podr = (void __iomem *) MCFGPIO_PODR_FECI2C, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECI2C, + }, + { + .gpio_chip = { + .label = "UARTH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 72, + .ngpio = 2, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UARTH, + .podr = (void __iomem *) MCFGPIO_PODR_UARTH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UARTH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UARTH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UARTH, + }, + { + .gpio_chip = { + .label = "UARTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 80, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UARTL, + .podr = (void __iomem *) MCFGPIO_PODR_UARTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UARTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UARTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UARTL, + }, + { + .gpio_chip = { + .label = "QSPI", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 88, + .ngpio = 5, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_QSPI, + .podr = (void __iomem *) MCFGPIO_PODR_QSPI, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .setr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .clrr = (void __iomem *) MCFGPIO_PCLRR_QSPI, + }, + { + .gpio_chip = { + .label = "TIMER", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 96, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_TIMER, + .podr = (void __iomem *) MCFGPIO_PODR_TIMER, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .setr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .clrr = (void __iomem *) MCFGPIO_PCLRR_TIMER, + }, + { + .gpio_chip = { + .label = "ETPU", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 104, + .ngpio = 3, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_ETPU, + .podr = (void __iomem *) MCFGPIO_PODR_ETPU, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_ETPU, + .setr = (void __iomem *) MCFGPIO_PPDSDR_ETPU, + .clrr = (void __iomem *) MCFGPIO_PCLRR_ETPU, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/5249/Makefile b/arch/m68k/platform/5249/Makefile new file mode 100644 index 0000000..4bed30f --- /dev/null +++ b/arch/m68k/platform/5249/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o intc2.o + diff --git a/arch/m68k/platform/5249/config.c b/arch/m68k/platform/5249/config.c new file mode 100644 index 0000000..ceb31e5 --- /dev/null +++ b/arch/m68k/platform/5249/config.c @@ -0,0 +1,330 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/5249/config.c + * + * Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfqspi.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m5249_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 73, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 74, + }, + { }, +}; + +static struct platform_device m5249_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m5249_uart_platform, +}; + +#ifdef CONFIG_M5249C3 + +static struct resource m5249_smc91x_resources[] = { + { + .start = 0xe0000300, + .end = 0xe0000300 + 0x100, + .flags = IORESOURCE_MEM, + }, + { + .start = MCFINTC2_GPIOIRQ6, + .end = MCFINTC2_GPIOIRQ6, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device m5249_smc91x = { + .name = "smc91x", + .id = 0, + .num_resources = ARRAY_SIZE(m5249_smc91x_resources), + .resource = m5249_smc91x_resources, +}; + +#endif /* CONFIG_M5249C3 */ + +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) +static struct resource m5249_qspi_resources[] = { + { + .start = MCFQSPI_IOBASE, + .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = MCF_IRQ_QSPI, + .end = MCF_IRQ_QSPI, + .flags = IORESOURCE_IRQ, + }, +}; + +#define MCFQSPI_CS0 29 +#define MCFQSPI_CS1 24 +#define MCFQSPI_CS2 21 +#define MCFQSPI_CS3 22 + +static int m5249_cs_setup(struct mcfqspi_cs_control *cs_control) +{ + int status; + + status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); + goto fail0; + } + status = gpio_direction_output(MCFQSPI_CS0, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); + goto fail1; + } + + status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); + goto fail1; + } + status = gpio_direction_output(MCFQSPI_CS1, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); + goto fail2; + } + + status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); + goto fail2; + } + status = gpio_direction_output(MCFQSPI_CS2, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); + goto fail3; + } + + status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS3 failed\n"); + goto fail3; + } + status = gpio_direction_output(MCFQSPI_CS3, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n"); + goto fail4; + } + + return 0; + +fail4: + gpio_free(MCFQSPI_CS3); +fail3: + gpio_free(MCFQSPI_CS2); +fail2: + gpio_free(MCFQSPI_CS1); +fail1: + gpio_free(MCFQSPI_CS0); +fail0: + return status; +} + +static void m5249_cs_teardown(struct mcfqspi_cs_control *cs_control) +{ + gpio_free(MCFQSPI_CS3); + gpio_free(MCFQSPI_CS2); + gpio_free(MCFQSPI_CS1); + gpio_free(MCFQSPI_CS0); +} + +static void m5249_cs_select(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, cs_high); + break; + case 3: + gpio_set_value(MCFQSPI_CS3, cs_high); + break; + } +} + +static void m5249_cs_deselect(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, !cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, !cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, !cs_high); + break; + case 3: + gpio_set_value(MCFQSPI_CS3, !cs_high); + break; + } +} + +static struct mcfqspi_cs_control m5249_cs_control = { + .setup = m5249_cs_setup, + .teardown = m5249_cs_teardown, + .select = m5249_cs_select, + .deselect = m5249_cs_deselect, +}; + +static struct mcfqspi_platform_data m5249_qspi_data = { + .bus_num = 0, + .num_chipselect = 4, + .cs_control = &m5249_cs_control, +}; + +static struct platform_device m5249_qspi = { + .name = "mcfqspi", + .id = 0, + .num_resources = ARRAY_SIZE(m5249_qspi_resources), + .resource = m5249_qspi_resources, + .dev.platform_data = &m5249_qspi_data, +}; + +static void __init m5249_qspi_init(void) +{ + /* QSPI irq setup */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL4 | MCFSIM_ICR_PRI0, + MCF_MBAR + MCFSIM_QSPIICR); + mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI); +} +#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ + + +static struct platform_device *m5249_devices[] __initdata = { + &m5249_uart, +#ifdef CONFIG_M5249C3 + &m5249_smc91x, +#endif +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + &m5249_qspi, +#endif +}; + +/***************************************************************************/ + +static void __init m5249_uart_init_line(int line, int irq) +{ + if (line == 0) { + writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR); + writeb(irq, MCF_MBAR + MCFUART_BASE1 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART0); + } else if (line == 1) { + writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR); + writeb(irq, MCF_MBAR + MCFUART_BASE2 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART1); + } +} + +static void __init m5249_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m5249_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m5249_uart_init_line(line, m5249_uart_platform[line].irq); +} + +/***************************************************************************/ + +#ifdef CONFIG_M5249C3 + +static void __init m5249_smc91x_init(void) +{ + u32 gpio; + + /* Set the GPIO line as interrupt source for smc91x device */ + gpio = readl(MCF_MBAR2 + MCFSIM2_GPIOINTENABLE); + writel(gpio | 0x40, MCF_MBAR2 + MCFSIM2_GPIOINTENABLE); + + gpio = readl(MCF_MBAR2 + MCFSIM2_INTLEVEL5); + writel(gpio | 0x04000000, MCF_MBAR2 + MCFSIM2_INTLEVEL5); +} + +#endif /* CONFIG_M5249C3 */ + +/***************************************************************************/ + +static void __init m5249_timers_init(void) +{ + /* Timer1 is always used as system timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER1ICR); + mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1); + +#ifdef CONFIG_HIGHPROFILE + /* Timer2 is to be used as a high speed profile timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER2ICR); + mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2); +#endif +} + +/***************************************************************************/ + +void m5249_cpu_reset(void) +{ + local_irq_disable(); + /* Set watchdog to soft reset, and enabled */ + __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR); + for (;;) + /* wait for watchdog to timeout */; +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = m5249_cpu_reset; + m5249_timers_init(); + m5249_uarts_init(); +#ifdef CONFIG_M5249C3 + m5249_smc91x_init(); +#endif +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + m5249_qspi_init(); +#endif +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/5249/gpio.c b/arch/m68k/platform/5249/gpio.c new file mode 100644 index 0000000..2b56c6e --- /dev/null +++ b/arch/m68k/platform/5249/gpio.c @@ -0,0 +1,65 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "GPIO0", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 32, + }, + .pddr = (void __iomem *) MCFSIM2_GPIOENABLE, + .podr = (void __iomem *) MCFSIM2_GPIOWRITE, + .ppdr = (void __iomem *) MCFSIM2_GPIOREAD, + }, + { + .gpio_chip = { + .label = "GPIO1", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .base = 32, + .ngpio = 32, + }, + .pddr = (void __iomem *) MCFSIM2_GPIO1ENABLE, + .podr = (void __iomem *) MCFSIM2_GPIO1WRITE, + .ppdr = (void __iomem *) MCFSIM2_GPIO1READ, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/5249/intc2.c b/arch/m68k/platform/5249/intc2.c new file mode 100644 index 0000000..8f4b63e --- /dev/null +++ b/arch/m68k/platform/5249/intc2.c @@ -0,0 +1,61 @@ +/* + * intc2.c -- support for the 2nd INTC controller of the 5249 + * + * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +static void intc2_irq_gpio_mask(struct irq_data *d) +{ + u32 imr; + imr = readl(MCF_MBAR2 + MCFSIM2_GPIOINTENABLE); + imr &= ~(0x1 << (d->irq - MCFINTC2_GPIOIRQ0)); + writel(imr, MCF_MBAR2 + MCFSIM2_GPIOINTENABLE); +} + +static void intc2_irq_gpio_unmask(struct irq_data *d) +{ + u32 imr; + imr = readl(MCF_MBAR2 + MCFSIM2_GPIOINTENABLE); + imr |= (0x1 << (d->irq - MCFINTC2_GPIOIRQ0)); + writel(imr, MCF_MBAR2 + MCFSIM2_GPIOINTENABLE); +} + +static void intc2_irq_gpio_ack(struct irq_data *d) +{ + writel(0x1 << (d->irq - MCFINTC2_GPIOIRQ0), MCF_MBAR2 + MCFSIM2_GPIOINTCLEAR); +} + +static struct irq_chip intc2_irq_gpio_chip = { + .name = "CF-INTC2", + .irq_mask = intc2_irq_gpio_mask, + .irq_unmask = intc2_irq_gpio_unmask, + .irq_ack = intc2_irq_gpio_ack, +}; + +static int __init mcf_intc2_init(void) +{ + int irq; + + /* GPIO interrupt sources */ + for (irq = MCFINTC2_GPIOIRQ0; (irq <= MCFINTC2_GPIOIRQ7); irq++) { + set_irq_chip(irq, &intc2_irq_gpio_chip); + set_irq_handler(irq, handle_edge_irq); + } + + return 0; +} + +arch_initcall(mcf_intc2_init); diff --git a/arch/m68k/platform/5272/Makefile b/arch/m68k/platform/5272/Makefile new file mode 100644 index 0000000..34110fc --- /dev/null +++ b/arch/m68k/platform/5272/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o intc.o + diff --git a/arch/m68k/platform/5272/config.c b/arch/m68k/platform/5272/config.c new file mode 100644 index 0000000..65bb582 --- /dev/null +++ b/arch/m68k/platform/5272/config.c @@ -0,0 +1,176 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/5272/config.c + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/phy.h> +#include <linux/phy_fixed.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> + +/***************************************************************************/ + +/* + * Some platforms need software versions of the GPIO data registers. + */ +unsigned short ppdata; +unsigned char ledbank = 0xff; + +/***************************************************************************/ + +static struct mcf_platform_uart m5272_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = MCF_IRQ_UART1, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = MCF_IRQ_UART2, + }, + { }, +}; + +static struct platform_device m5272_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m5272_uart_platform, +}; + +static struct resource m5272_fec_resources[] = { + { + .start = MCF_MBAR + 0x840, + .end = MCF_MBAR + 0x840 + 0x1cf, + .flags = IORESOURCE_MEM, + }, + { + .start = MCF_IRQ_ERX, + .end = MCF_IRQ_ERX, + .flags = IORESOURCE_IRQ, + }, + { + .start = MCF_IRQ_ETX, + .end = MCF_IRQ_ETX, + .flags = IORESOURCE_IRQ, + }, + { + .start = MCF_IRQ_ENTC, + .end = MCF_IRQ_ENTC, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device m5272_fec = { + .name = "fec", + .id = 0, + .num_resources = ARRAY_SIZE(m5272_fec_resources), + .resource = m5272_fec_resources, +}; + +static struct platform_device *m5272_devices[] __initdata = { + &m5272_uart, + &m5272_fec, +}; + +/***************************************************************************/ + +static void __init m5272_uart_init_line(int line, int irq) +{ + u32 v; + + if ((line >= 0) && (line < 2)) { + /* Enable the output lines for the serial ports */ + v = readl(MCF_MBAR + MCFSIM_PBCNT); + v = (v & ~0x000000ff) | 0x00000055; + writel(v, MCF_MBAR + MCFSIM_PBCNT); + + v = readl(MCF_MBAR + MCFSIM_PDCNT); + v = (v & ~0x000003fc) | 0x000002a8; + writel(v, MCF_MBAR + MCFSIM_PDCNT); + } +} + +static void __init m5272_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m5272_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m5272_uart_init_line(line, m5272_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void m5272_cpu_reset(void) +{ + local_irq_disable(); + /* Set watchdog to reset, and enabled */ + __raw_writew(0, MCF_MBAR + MCFSIM_WIRR); + __raw_writew(1, MCF_MBAR + MCFSIM_WRRR); + __raw_writew(0, MCF_MBAR + MCFSIM_WCR); + for (;;) + /* wait for watchdog to timeout */; +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ +#if defined (CONFIG_MOD5272) + volatile unsigned char *pivrp; + + /* Set base of device vectors to be 64 */ + pivrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_PIVR); + *pivrp = 0x40; +#endif + +#if defined(CONFIG_NETtel) || defined(CONFIG_SCALES) + /* Copy command line from FLASH to local buffer... */ + memcpy(commandp, (char *) 0xf0004000, size); + commandp[size-1] = 0; +#elif defined(CONFIG_CANCam) + /* Copy command line from FLASH to local buffer... */ + memcpy(commandp, (char *) 0xf0010000, size); + commandp[size-1] = 0; +#endif + + mach_reset = m5272_cpu_reset; +} + +/***************************************************************************/ + +/* + * Some 5272 based boards have the FEC ethernet diectly connected to + * an ethernet switch. In this case we need to use the fixed phy type, + * and we need to declare it early in boot. + */ +static struct fixed_phy_status nettel_fixed_phy_status __initdata = { + .link = 1, + .speed = 100, + .duplex = 0, +}; + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + m5272_uarts_init(); + fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status); + platform_add_devices(m5272_devices, ARRAY_SIZE(m5272_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/5272/gpio.c b/arch/m68k/platform/5272/gpio.c new file mode 100644 index 0000000..57ac10a --- /dev/null +++ b/arch/m68k/platform/5272/gpio.c @@ -0,0 +1,81 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PA", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 16, + }, + .pddr = (void __iomem *) MCFSIM_PADDR, + .podr = (void __iomem *) MCFSIM_PADAT, + .ppdr = (void __iomem *) MCFSIM_PADAT, + }, + { + .gpio_chip = { + .label = "PB", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .base = 16, + .ngpio = 16, + }, + .pddr = (void __iomem *) MCFSIM_PBDDR, + .podr = (void __iomem *) MCFSIM_PBDAT, + .ppdr = (void __iomem *) MCFSIM_PBDAT, + }, + { + .gpio_chip = { + .label = "PC", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .base = 32, + .ngpio = 16, + }, + .pddr = (void __iomem *) MCFSIM_PCDDR, + .podr = (void __iomem *) MCFSIM_PCDAT, + .ppdr = (void __iomem *) MCFSIM_PCDAT, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/5272/intc.c b/arch/m68k/platform/5272/intc.c new file mode 100644 index 0000000..969ff0a --- /dev/null +++ b/arch/m68k/platform/5272/intc.c @@ -0,0 +1,187 @@ +/* + * intc.c -- interrupt controller or ColdFire 5272 SoC + * + * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/kernel_stat.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/traps.h> + +/* + * The 5272 ColdFire interrupt controller is nothing like any other + * ColdFire interrupt controller - it truly is completely different. + * Given its age it is unlikely to be used on any other ColdFire CPU. + */ + +/* + * The masking and priproty setting of interrupts on the 5272 is done + * via a set of 4 "Interrupt Controller Registers" (ICR). There is a + * loose mapping of vector number to register and internal bits, but + * a table is the easiest and quickest way to map them. + * + * Note that the external interrupts are edge triggered (unlike the + * internal interrupt sources which are level triggered). Which means + * they also need acknowledgeing via acknowledge bits. + */ +struct irqmap { + unsigned char icr; + unsigned char index; + unsigned char ack; +}; + +static struct irqmap intc_irqmap[MCFINT_VECMAX - MCFINT_VECBASE] = { + /*MCF_IRQ_SPURIOUS*/ { .icr = 0, .index = 0, .ack = 0, }, + /*MCF_IRQ_EINT1*/ { .icr = MCFSIM_ICR1, .index = 28, .ack = 1, }, + /*MCF_IRQ_EINT2*/ { .icr = MCFSIM_ICR1, .index = 24, .ack = 1, }, + /*MCF_IRQ_EINT3*/ { .icr = MCFSIM_ICR1, .index = 20, .ack = 1, }, + /*MCF_IRQ_EINT4*/ { .icr = MCFSIM_ICR1, .index = 16, .ack = 1, }, + /*MCF_IRQ_TIMER1*/ { .icr = MCFSIM_ICR1, .index = 12, .ack = 0, }, + /*MCF_IRQ_TIMER2*/ { .icr = MCFSIM_ICR1, .index = 8, .ack = 0, }, + /*MCF_IRQ_TIMER3*/ { .icr = MCFSIM_ICR1, .index = 4, .ack = 0, }, + /*MCF_IRQ_TIMER4*/ { .icr = MCFSIM_ICR1, .index = 0, .ack = 0, }, + /*MCF_IRQ_UART1*/ { .icr = MCFSIM_ICR2, .index = 28, .ack = 0, }, + /*MCF_IRQ_UART2*/ { .icr = MCFSIM_ICR2, .index = 24, .ack = 0, }, + /*MCF_IRQ_PLIP*/ { .icr = MCFSIM_ICR2, .index = 20, .ack = 0, }, + /*MCF_IRQ_PLIA*/ { .icr = MCFSIM_ICR2, .index = 16, .ack = 0, }, + /*MCF_IRQ_USB0*/ { .icr = MCFSIM_ICR2, .index = 12, .ack = 0, }, + /*MCF_IRQ_USB1*/ { .icr = MCFSIM_ICR2, .index = 8, .ack = 0, }, + /*MCF_IRQ_USB2*/ { .icr = MCFSIM_ICR2, .index = 4, .ack = 0, }, + /*MCF_IRQ_USB3*/ { .icr = MCFSIM_ICR2, .index = 0, .ack = 0, }, + /*MCF_IRQ_USB4*/ { .icr = MCFSIM_ICR3, .index = 28, .ack = 0, }, + /*MCF_IRQ_USB5*/ { .icr = MCFSIM_ICR3, .index = 24, .ack = 0, }, + /*MCF_IRQ_USB6*/ { .icr = MCFSIM_ICR3, .index = 20, .ack = 0, }, + /*MCF_IRQ_USB7*/ { .icr = MCFSIM_ICR3, .index = 16, .ack = 0, }, + /*MCF_IRQ_DMA*/ { .icr = MCFSIM_ICR3, .index = 12, .ack = 0, }, + /*MCF_IRQ_ERX*/ { .icr = MCFSIM_ICR3, .index = 8, .ack = 0, }, + /*MCF_IRQ_ETX*/ { .icr = MCFSIM_ICR3, .index = 4, .ack = 0, }, + /*MCF_IRQ_ENTC*/ { .icr = MCFSIM_ICR3, .index = 0, .ack = 0, }, + /*MCF_IRQ_QSPI*/ { .icr = MCFSIM_ICR4, .index = 28, .ack = 0, }, + /*MCF_IRQ_EINT5*/ { .icr = MCFSIM_ICR4, .index = 24, .ack = 1, }, + /*MCF_IRQ_EINT6*/ { .icr = MCFSIM_ICR4, .index = 20, .ack = 1, }, + /*MCF_IRQ_SWTO*/ { .icr = MCFSIM_ICR4, .index = 16, .ack = 0, }, +}; + +/* + * The act of masking the interrupt also has a side effect of 'ack'ing + * an interrupt on this irq (for the external irqs). So this mask function + * is also an ack_mask function. + */ +static void intc_irq_mask(struct irq_data *d) +{ + unsigned int irq = d->irq; + + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX)) { + u32 v; + irq -= MCFINT_VECBASE; + v = 0x8 << intc_irqmap[irq].index; + writel(v, MCF_MBAR + intc_irqmap[irq].icr); + } +} + +static void intc_irq_unmask(struct irq_data *d) +{ + unsigned int irq = d->irq; + + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX)) { + u32 v; + irq -= MCFINT_VECBASE; + v = 0xd << intc_irqmap[irq].index; + writel(v, MCF_MBAR + intc_irqmap[irq].icr); + } +} + +static void intc_irq_ack(struct irq_data *d) +{ + unsigned int irq = d->irq; + + /* Only external interrupts are acked */ + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX)) { + irq -= MCFINT_VECBASE; + if (intc_irqmap[irq].ack) { + u32 v; + v = readl(MCF_MBAR + intc_irqmap[irq].icr); + v &= (0x7 << intc_irqmap[irq].index); + v |= (0x8 << intc_irqmap[irq].index); + writel(v, MCF_MBAR + intc_irqmap[irq].icr); + } + } +} + +static int intc_irq_set_type(struct irq_data *d, unsigned int type) +{ + unsigned int irq = d->irq; + + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX)) { + irq -= MCFINT_VECBASE; + if (intc_irqmap[irq].ack) { + u32 v; + v = readl(MCF_MBAR + MCFSIM_PITR); + if (type == IRQ_TYPE_EDGE_FALLING) + v &= ~(0x1 << (32 - irq)); + else + v |= (0x1 << (32 - irq)); + writel(v, MCF_MBAR + MCFSIM_PITR); + } + } + return 0; +} + +/* + * Simple flow handler to deal with the external edge triggered interrupts. + * We need to be careful with the masking/acking due to the side effects + * of masking an interrupt. + */ +static void intc_external_irq(unsigned int irq, struct irq_desc *desc) +{ + get_irq_desc_chip(desc)->irq_ack(&desc->irq_data); + handle_simple_irq(irq, desc); +} + +static struct irq_chip intc_irq_chip = { + .name = "CF-INTC", + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_mask_ack = intc_irq_mask, + .irq_ack = intc_irq_ack, + .irq_set_type = intc_irq_set_type, +}; + +void __init init_IRQ(void) +{ + int irq, edge; + + init_vectors(); + + /* Mask all interrupt sources */ + writel(0x88888888, MCF_MBAR + MCFSIM_ICR1); + writel(0x88888888, MCF_MBAR + MCFSIM_ICR2); + writel(0x88888888, MCF_MBAR + MCFSIM_ICR3); + writel(0x88888888, MCF_MBAR + MCFSIM_ICR4); + + for (irq = 0; (irq < NR_IRQS); irq++) { + set_irq_chip(irq, &intc_irq_chip); + edge = 0; + if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECMAX)) + edge = intc_irqmap[irq - MCFINT_VECBASE].ack; + if (edge) { + set_irq_type(irq, IRQ_TYPE_EDGE_RISING); + set_irq_handler(irq, intc_external_irq); + } else { + set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH); + set_irq_handler(irq, handle_level_irq); + } + } +} + diff --git a/arch/m68k/platform/527x/Makefile b/arch/m68k/platform/527x/Makefile new file mode 100644 index 0000000..6ac4b57 --- /dev/null +++ b/arch/m68k/platform/527x/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o + diff --git a/arch/m68k/platform/527x/config.c b/arch/m68k/platform/527x/config.c new file mode 100644 index 0000000..fa35959 --- /dev/null +++ b/arch/m68k/platform/527x/config.c @@ -0,0 +1,384 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/527x/config.c + * + * Sub-architcture dependant initialization code for the Freescale + * 5270/5271 CPUs. + * + * Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfqspi.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m527x_uart_platform[] = { + { + .mapbase = MCFUART_BASE1, + .irq = MCFINT_VECBASE + MCFINT_UART0, + }, + { + .mapbase = MCFUART_BASE2, + .irq = MCFINT_VECBASE + MCFINT_UART1, + }, + { + .mapbase = MCFUART_BASE3, + .irq = MCFINT_VECBASE + MCFINT_UART2, + }, + { }, +}; + +static struct platform_device m527x_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m527x_uart_platform, +}; + +static struct resource m527x_fec0_resources[] = { + { + .start = MCFFEC_BASE0, + .end = MCFFEC_BASE0 + MCFFEC_SIZE0 - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = 64 + 23, + .end = 64 + 23, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 27, + .end = 64 + 27, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 29, + .end = 64 + 29, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource m527x_fec1_resources[] = { + { + .start = MCFFEC_BASE1, + .end = MCFFEC_BASE1 + MCFFEC_SIZE1 - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = 128 + 23, + .end = 128 + 23, + .flags = IORESOURCE_IRQ, + }, + { + .start = 128 + 27, + .end = 128 + 27, + .flags = IORESOURCE_IRQ, + }, + { + .start = 128 + 29, + .end = 128 + 29, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device m527x_fec[] = { + { + .name = "fec", + .id = 0, + .num_resources = ARRAY_SIZE(m527x_fec0_resources), + .resource = m527x_fec0_resources, + }, + { + .name = "fec", + .id = 1, + .num_resources = ARRAY_SIZE(m527x_fec1_resources), + .resource = m527x_fec1_resources, + }, +}; + +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) +static struct resource m527x_qspi_resources[] = { + { + .start = MCFQSPI_IOBASE, + .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = MCFINT_VECBASE + MCFINT_QSPI, + .end = MCFINT_VECBASE + MCFINT_QSPI, + .flags = IORESOURCE_IRQ, + }, +}; + +#if defined(CONFIG_M5271) +#define MCFQSPI_CS0 91 +#define MCFQSPI_CS1 92 +#define MCFQSPI_CS2 99 +#define MCFQSPI_CS3 103 +#elif defined(CONFIG_M5275) +#define MCFQSPI_CS0 59 +#define MCFQSPI_CS1 60 +#define MCFQSPI_CS2 61 +#define MCFQSPI_CS3 62 +#endif + +static int m527x_cs_setup(struct mcfqspi_cs_control *cs_control) +{ + int status; + + status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); + goto fail0; + } + status = gpio_direction_output(MCFQSPI_CS0, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); + goto fail1; + } + + status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); + goto fail1; + } + status = gpio_direction_output(MCFQSPI_CS1, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); + goto fail2; + } + + status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); + goto fail2; + } + status = gpio_direction_output(MCFQSPI_CS2, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); + goto fail3; + } + + status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS3 failed\n"); + goto fail3; + } + status = gpio_direction_output(MCFQSPI_CS3, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n"); + goto fail4; + } + + return 0; + +fail4: + gpio_free(MCFQSPI_CS3); +fail3: + gpio_free(MCFQSPI_CS2); +fail2: + gpio_free(MCFQSPI_CS1); +fail1: + gpio_free(MCFQSPI_CS0); +fail0: + return status; +} + +static void m527x_cs_teardown(struct mcfqspi_cs_control *cs_control) +{ + gpio_free(MCFQSPI_CS3); + gpio_free(MCFQSPI_CS2); + gpio_free(MCFQSPI_CS1); + gpio_free(MCFQSPI_CS0); +} + +static void m527x_cs_select(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, cs_high); + break; + case 3: + gpio_set_value(MCFQSPI_CS3, cs_high); + break; + } +} + +static void m527x_cs_deselect(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + switch (chip_select) { + case 0: + gpio_set_value(MCFQSPI_CS0, !cs_high); + break; + case 1: + gpio_set_value(MCFQSPI_CS1, !cs_high); + break; + case 2: + gpio_set_value(MCFQSPI_CS2, !cs_high); + break; + case 3: + gpio_set_value(MCFQSPI_CS3, !cs_high); + break; + } +} + +static struct mcfqspi_cs_control m527x_cs_control = { + .setup = m527x_cs_setup, + .teardown = m527x_cs_teardown, + .select = m527x_cs_select, + .deselect = m527x_cs_deselect, +}; + +static struct mcfqspi_platform_data m527x_qspi_data = { + .bus_num = 0, + .num_chipselect = 4, + .cs_control = &m527x_cs_control, +}; + +static struct platform_device m527x_qspi = { + .name = "mcfqspi", + .id = 0, + .num_resources = ARRAY_SIZE(m527x_qspi_resources), + .resource = m527x_qspi_resources, + .dev.platform_data = &m527x_qspi_data, +}; + +static void __init m527x_qspi_init(void) +{ +#if defined(CONFIG_M5271) + u16 par; + + /* setup QSPS pins for QSPI with gpio CS control */ + writeb(0x1f, MCFGPIO_PAR_QSPI); + /* and CS2 & CS3 as gpio */ + par = readw(MCFGPIO_PAR_TIMER); + par &= 0x3f3f; + writew(par, MCFGPIO_PAR_TIMER); +#elif defined(CONFIG_M5275) + /* setup QSPS pins for QSPI with gpio CS control */ + writew(0x003e, MCFGPIO_PAR_QSPI); +#endif +} +#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ + +static struct platform_device *m527x_devices[] __initdata = { + &m527x_uart, + &m527x_fec[0], +#ifdef CONFIG_FEC2 + &m527x_fec[1], +#endif +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + &m527x_qspi, +#endif +}; + +/***************************************************************************/ + +static void __init m527x_uart_init_line(int line, int irq) +{ + u16 sepmask; + + if ((line < 0) || (line > 2)) + return; + + /* + * External Pin Mask Setting & Enable External Pin for Interface + */ + sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART); + if (line == 0) + sepmask |= UART0_ENABLE_MASK; + else if (line == 1) + sepmask |= UART1_ENABLE_MASK; + else if (line == 2) + sepmask |= UART2_ENABLE_MASK; + writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART); +} + +static void __init m527x_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m527x_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m527x_uart_init_line(line, m527x_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m527x_fec_init(void) +{ + u16 par; + u8 v; + + /* Set multi-function pins to ethernet mode for fec0 */ +#if defined(CONFIG_M5271) + v = readb(MCF_IPSBAR + 0x100047); + writeb(v | 0xf0, MCF_IPSBAR + 0x100047); +#else + par = readw(MCF_IPSBAR + 0x100082); + writew(par | 0xf00, MCF_IPSBAR + 0x100082); + v = readb(MCF_IPSBAR + 0x100078); + writeb(v | 0xc0, MCF_IPSBAR + 0x100078); +#endif + +#ifdef CONFIG_FEC2 + /* Set multi-function pins to ethernet mode for fec1 */ + par = readw(MCF_IPSBAR + 0x100082); + writew(par | 0xa0, MCF_IPSBAR + 0x100082); + v = readb(MCF_IPSBAR + 0x100079); + writeb(v | 0xc0, MCF_IPSBAR + 0x100079); +#endif +} + +/***************************************************************************/ + +static void m527x_cpu_reset(void) +{ + local_irq_disable(); + __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR); +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = m527x_cpu_reset; + m527x_uarts_init(); + m527x_fec_init(); +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + m527x_qspi_init(); +#endif +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/527x/gpio.c b/arch/m68k/platform/527x/gpio.c new file mode 100644 index 0000000..205da0a --- /dev/null +++ b/arch/m68k/platform/527x/gpio.c @@ -0,0 +1,609 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { +#if defined(CONFIG_M5271) + { + .gpio_chip = { + .label = "PIRQ", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .base = 1, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFEPORT_EPDDR, + .podr = (void __iomem *) MCFEPORT_EPDR, + .ppdr = (void __iomem *) MCFEPORT_EPPDR, + }, + { + .gpio_chip = { + .label = "ADDR", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 13, + .ngpio = 3, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_ADDR, + .podr = (void __iomem *) MCFGPIO_PODR_ADDR, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_ADDR, + .setr = (void __iomem *) MCFGPIO_PPDSDR_ADDR, + .clrr = (void __iomem *) MCFGPIO_PCLRR_ADDR, + }, + { + .gpio_chip = { + .label = "DATAH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 16, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_DATAH, + .podr = (void __iomem *) MCFGPIO_PODR_DATAH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_DATAH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_DATAH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_DATAH, + }, + { + .gpio_chip = { + .label = "DATAL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 24, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_DATAL, + .podr = (void __iomem *) MCFGPIO_PODR_DATAL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_DATAL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_DATAL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_DATAL, + }, + { + .gpio_chip = { + .label = "BUSCTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 32, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BUSCTL, + .podr = (void __iomem *) MCFGPIO_PODR_BUSCTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BUSCTL, + }, + { + .gpio_chip = { + .label = "BS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 40, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BS, + .podr = (void __iomem *) MCFGPIO_PODR_BS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BS, + }, + { + .gpio_chip = { + .label = "CS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 49, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_CS, + .podr = (void __iomem *) MCFGPIO_PODR_CS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_CS, + }, + { + .gpio_chip = { + .label = "SDRAM", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 56, + .ngpio = 6, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_SDRAM, + .podr = (void __iomem *) MCFGPIO_PODR_SDRAM, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_SDRAM, + .setr = (void __iomem *) MCFGPIO_PPDSDR_SDRAM, + .clrr = (void __iomem *) MCFGPIO_PCLRR_SDRAM, + }, + { + .gpio_chip = { + .label = "FECI2C", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 64, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECI2C, + .podr = (void __iomem *) MCFGPIO_PODR_FECI2C, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECI2C, + }, + { + .gpio_chip = { + .label = "UARTH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 72, + .ngpio = 2, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UARTH, + .podr = (void __iomem *) MCFGPIO_PODR_UARTH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UARTH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UARTH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UARTH, + }, + { + .gpio_chip = { + .label = "UARTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 80, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UARTL, + .podr = (void __iomem *) MCFGPIO_PODR_UARTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UARTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UARTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UARTL, + }, + { + .gpio_chip = { + .label = "QSPI", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 88, + .ngpio = 5, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_QSPI, + .podr = (void __iomem *) MCFGPIO_PODR_QSPI, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .setr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .clrr = (void __iomem *) MCFGPIO_PCLRR_QSPI, + }, + { + .gpio_chip = { + .label = "TIMER", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 96, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_TIMER, + .podr = (void __iomem *) MCFGPIO_PODR_TIMER, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .setr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .clrr = (void __iomem *) MCFGPIO_PCLRR_TIMER, + }, +#elif defined(CONFIG_M5275) + { + .gpio_chip = { + .label = "PIRQ", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .base = 1, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFEPORT_EPDDR, + .podr = (void __iomem *) MCFEPORT_EPDR, + .ppdr = (void __iomem *) MCFEPORT_EPPDR, + }, + { + .gpio_chip = { + .label = "BUSCTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 8, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BUSCTL, + .podr = (void __iomem *) MCFGPIO_PODR_BUSCTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BUSCTL, + }, + { + .gpio_chip = { + .label = "ADDR", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 21, + .ngpio = 3, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_ADDR, + .podr = (void __iomem *) MCFGPIO_PODR_ADDR, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_ADDR, + .setr = (void __iomem *) MCFGPIO_PPDSDR_ADDR, + .clrr = (void __iomem *) MCFGPIO_PCLRR_ADDR, + }, + { + .gpio_chip = { + .label = "CS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 25, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_CS, + .podr = (void __iomem *) MCFGPIO_PODR_CS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_CS, + }, + { + .gpio_chip = { + .label = "FEC0H", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 32, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FEC0H, + .podr = (void __iomem *) MCFGPIO_PODR_FEC0H, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FEC0H, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FEC0H, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FEC0H, + }, + { + .gpio_chip = { + .label = "FEC0L", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 40, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FEC0L, + .podr = (void __iomem *) MCFGPIO_PODR_FEC0L, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FEC0L, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FEC0L, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FEC0L, + }, + { + .gpio_chip = { + .label = "FECI2C", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 48, + .ngpio = 6, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECI2C, + .podr = (void __iomem *) MCFGPIO_PODR_FECI2C, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECI2C, + }, + { + .gpio_chip = { + .label = "QSPI", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 56, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_QSPI, + .podr = (void __iomem *) MCFGPIO_PODR_QSPI, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .setr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .clrr = (void __iomem *) MCFGPIO_PCLRR_QSPI, + }, + { + .gpio_chip = { + .label = "SDRAM", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 64, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_SDRAM, + .podr = (void __iomem *) MCFGPIO_PODR_SDRAM, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_SDRAM, + .setr = (void __iomem *) MCFGPIO_PPDSDR_SDRAM, + .clrr = (void __iomem *) MCFGPIO_PCLRR_SDRAM, + }, + { + .gpio_chip = { + .label = "TIMERH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 72, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_TIMERH, + .podr = (void __iomem *) MCFGPIO_PODR_TIMERH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_TIMERH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_TIMERH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_TIMERH, + }, + { + .gpio_chip = { + .label = "TIMERL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 80, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_TIMERL, + .podr = (void __iomem *) MCFGPIO_PODR_TIMERL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_TIMERL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_TIMERL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_TIMERL, + }, + { + .gpio_chip = { + .label = "UARTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 88, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UARTL, + .podr = (void __iomem *) MCFGPIO_PODR_UARTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UARTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UARTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UARTL, + }, + { + .gpio_chip = { + .label = "FEC1H", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 96, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FEC1H, + .podr = (void __iomem *) MCFGPIO_PODR_FEC1H, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FEC1H, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FEC1H, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FEC1H, + }, + { + .gpio_chip = { + .label = "FEC1L", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 104, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FEC1L, + .podr = (void __iomem *) MCFGPIO_PODR_FEC1L, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FEC1L, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FEC1L, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FEC1L, + }, + { + .gpio_chip = { + .label = "BS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 114, + .ngpio = 2, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BS, + .podr = (void __iomem *) MCFGPIO_PODR_BS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BS, + }, + { + .gpio_chip = { + .label = "IRQ", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 121, + .ngpio = 7, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_IRQ, + .podr = (void __iomem *) MCFGPIO_PODR_IRQ, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_IRQ, + .setr = (void __iomem *) MCFGPIO_PPDSDR_IRQ, + .clrr = (void __iomem *) MCFGPIO_PCLRR_IRQ, + }, + { + .gpio_chip = { + .label = "USBH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 128, + .ngpio = 1, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_USBH, + .podr = (void __iomem *) MCFGPIO_PODR_USBH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_USBH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_USBH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_USBH, + }, + { + .gpio_chip = { + .label = "USBL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 136, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_USBL, + .podr = (void __iomem *) MCFGPIO_PODR_USBL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_USBL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_USBL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_USBL, + }, + { + .gpio_chip = { + .label = "UARTH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 144, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UARTH, + .podr = (void __iomem *) MCFGPIO_PODR_UARTH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UARTH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UARTH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UARTH, + }, +#endif +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/528x/Makefile b/arch/m68k/platform/528x/Makefile new file mode 100644 index 0000000..6ac4b57 --- /dev/null +++ b/arch/m68k/platform/528x/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o + diff --git a/arch/m68k/platform/528x/config.c b/arch/m68k/platform/528x/config.c new file mode 100644 index 0000000..ac39fc6 --- /dev/null +++ b/arch/m68k/platform/528x/config.c @@ -0,0 +1,320 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/528x/config.c + * + * Sub-architcture dependant initialization code for the Freescale + * 5280, 5281 and 5282 CPUs. + * + * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfqspi.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m528x_uart_platform[] = { + { + .mapbase = MCFUART_BASE1, + .irq = MCFINT_VECBASE + MCFINT_UART0, + }, + { + .mapbase = MCFUART_BASE2, + .irq = MCFINT_VECBASE + MCFINT_UART0 + 1, + }, + { + .mapbase = MCFUART_BASE3, + .irq = MCFINT_VECBASE + MCFINT_UART0 + 2, + }, + { }, +}; + +static struct platform_device m528x_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m528x_uart_platform, +}; + +static struct resource m528x_fec_resources[] = { + { + .start = MCFFEC_BASE, + .end = MCFFEC_BASE + MCFFEC_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = 64 + 23, + .end = 64 + 23, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 27, + .end = 64 + 27, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 29, + .end = 64 + 29, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device m528x_fec = { + .name = "fec", + .id = 0, + .num_resources = ARRAY_SIZE(m528x_fec_resources), + .resource = m528x_fec_resources, +}; + +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) +static struct resource m528x_qspi_resources[] = { + { + .start = MCFQSPI_IOBASE, + .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = MCFINT_VECBASE + MCFINT_QSPI, + .end = MCFINT_VECBASE + MCFINT_QSPI, + .flags = IORESOURCE_IRQ, + }, +}; + +#define MCFQSPI_CS0 147 +#define MCFQSPI_CS1 148 +#define MCFQSPI_CS2 149 +#define MCFQSPI_CS3 150 + +static int m528x_cs_setup(struct mcfqspi_cs_control *cs_control) +{ + int status; + + status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); + goto fail0; + } + status = gpio_direction_output(MCFQSPI_CS0, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); + goto fail1; + } + + status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); + goto fail1; + } + status = gpio_direction_output(MCFQSPI_CS1, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); + goto fail2; + } + + status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); + goto fail2; + } + status = gpio_direction_output(MCFQSPI_CS2, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); + goto fail3; + } + + status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS3 failed\n"); + goto fail3; + } + status = gpio_direction_output(MCFQSPI_CS3, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n"); + goto fail4; + } + + return 0; + +fail4: + gpio_free(MCFQSPI_CS3); +fail3: + gpio_free(MCFQSPI_CS2); +fail2: + gpio_free(MCFQSPI_CS1); +fail1: + gpio_free(MCFQSPI_CS0); +fail0: + return status; +} + +static void m528x_cs_teardown(struct mcfqspi_cs_control *cs_control) +{ + gpio_free(MCFQSPI_CS3); + gpio_free(MCFQSPI_CS2); + gpio_free(MCFQSPI_CS1); + gpio_free(MCFQSPI_CS0); +} + +static void m528x_cs_select(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + gpio_set_value(MCFQSPI_CS0 + chip_select, cs_high); +} + +static void m528x_cs_deselect(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + gpio_set_value(MCFQSPI_CS0 + chip_select, !cs_high); +} + +static struct mcfqspi_cs_control m528x_cs_control = { + .setup = m528x_cs_setup, + .teardown = m528x_cs_teardown, + .select = m528x_cs_select, + .deselect = m528x_cs_deselect, +}; + +static struct mcfqspi_platform_data m528x_qspi_data = { + .bus_num = 0, + .num_chipselect = 4, + .cs_control = &m528x_cs_control, +}; + +static struct platform_device m528x_qspi = { + .name = "mcfqspi", + .id = 0, + .num_resources = ARRAY_SIZE(m528x_qspi_resources), + .resource = m528x_qspi_resources, + .dev.platform_data = &m528x_qspi_data, +}; + +static void __init m528x_qspi_init(void) +{ + /* setup Port QS for QSPI with gpio CS control */ + __raw_writeb(0x07, MCFGPIO_PQSPAR); +} +#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ + +static struct platform_device *m528x_devices[] __initdata = { + &m528x_uart, + &m528x_fec, +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + &m528x_qspi, +#endif +}; + +/***************************************************************************/ + +static void __init m528x_uart_init_line(int line, int irq) +{ + u8 port; + + if ((line < 0) || (line > 2)) + return; + + /* make sure PUAPAR is set for UART0 and UART1 */ + if (line < 2) { + port = readb(MCF5282_GPIO_PUAPAR); + port |= (0x03 << (line * 2)); + writeb(port, MCF5282_GPIO_PUAPAR); + } +} + +static void __init m528x_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m528x_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m528x_uart_init_line(line, m528x_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m528x_fec_init(void) +{ + u16 v16; + + /* Set multi-function pins to ethernet mode for fec0 */ + v16 = readw(MCF_IPSBAR + 0x100056); + writew(v16 | 0xf00, MCF_IPSBAR + 0x100056); + writeb(0xc0, MCF_IPSBAR + 0x100058); +} + +/***************************************************************************/ + +static void m528x_cpu_reset(void) +{ + local_irq_disable(); + __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR); +} + +/***************************************************************************/ + +#ifdef CONFIG_WILDFIRE +void wildfire_halt(void) +{ + writeb(0, 0x30000007); + writeb(0x2, 0x30000007); +} +#endif + +#ifdef CONFIG_WILDFIREMOD +void wildfiremod_halt(void) +{ + printk(KERN_INFO "WildFireMod hibernating...\n"); + + /* Set portE.5 to Digital IO */ + MCF5282_GPIO_PEPAR &= ~(1 << (5 * 2)); + + /* Make portE.5 an output */ + MCF5282_GPIO_DDRE |= (1 << 5); + + /* Now toggle portE.5 from low to high */ + MCF5282_GPIO_PORTE &= ~(1 << 5); + MCF5282_GPIO_PORTE |= (1 << 5); + + printk(KERN_EMERG "Failed to hibernate. Halting!\n"); +} +#endif + +void __init config_BSP(char *commandp, int size) +{ +#ifdef CONFIG_WILDFIRE + mach_halt = wildfire_halt; +#endif +#ifdef CONFIG_WILDFIREMOD + mach_halt = wildfiremod_halt; +#endif +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + mach_reset = m528x_cpu_reset; + m528x_uarts_init(); + m528x_fec_init(); +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + m528x_qspi_init(); +#endif + platform_add_devices(m528x_devices, ARRAY_SIZE(m528x_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/528x/gpio.c b/arch/m68k/platform/528x/gpio.c new file mode 100644 index 0000000..526db66 --- /dev/null +++ b/arch/m68k/platform/528x/gpio.c @@ -0,0 +1,438 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "NQ", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .base = 1, + .ngpio = 7, + }, + .pddr = (void __iomem *)MCFEPORT_EPDDR, + .podr = (void __iomem *)MCFEPORT_EPDR, + .ppdr = (void __iomem *)MCFEPORT_EPPDR, + }, + { + .gpio_chip = { + .label = "TA", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 8, + .ngpio = 4, + }, + .pddr = (void __iomem *)MCFGPTA_GPTDDR, + .podr = (void __iomem *)MCFGPTA_GPTPORT, + .ppdr = (void __iomem *)MCFGPTB_GPTPORT, + }, + { + .gpio_chip = { + .label = "TB", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 16, + .ngpio = 4, + }, + .pddr = (void __iomem *)MCFGPTB_GPTDDR, + .podr = (void __iomem *)MCFGPTB_GPTPORT, + .ppdr = (void __iomem *)MCFGPTB_GPTPORT, + }, + { + .gpio_chip = { + .label = "QA", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 24, + .ngpio = 4, + }, + .pddr = (void __iomem *)MCFQADC_DDRQA, + .podr = (void __iomem *)MCFQADC_PORTQA, + .ppdr = (void __iomem *)MCFQADC_PORTQA, + }, + { + .gpio_chip = { + .label = "QB", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 32, + .ngpio = 4, + }, + .pddr = (void __iomem *)MCFQADC_DDRQB, + .podr = (void __iomem *)MCFQADC_PORTQB, + .ppdr = (void __iomem *)MCFQADC_PORTQB, + }, + { + .gpio_chip = { + .label = "A", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 40, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRA, + .podr = (void __iomem *)MCFGPIO_PORTA, + .ppdr = (void __iomem *)MCFGPIO_PORTAP, + .setr = (void __iomem *)MCFGPIO_SETA, + .clrr = (void __iomem *)MCFGPIO_CLRA, + }, + { + .gpio_chip = { + .label = "B", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 48, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRB, + .podr = (void __iomem *)MCFGPIO_PORTB, + .ppdr = (void __iomem *)MCFGPIO_PORTBP, + .setr = (void __iomem *)MCFGPIO_SETB, + .clrr = (void __iomem *)MCFGPIO_CLRB, + }, + { + .gpio_chip = { + .label = "C", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 56, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRC, + .podr = (void __iomem *)MCFGPIO_PORTC, + .ppdr = (void __iomem *)MCFGPIO_PORTCP, + .setr = (void __iomem *)MCFGPIO_SETC, + .clrr = (void __iomem *)MCFGPIO_CLRC, + }, + { + .gpio_chip = { + .label = "D", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 64, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRD, + .podr = (void __iomem *)MCFGPIO_PORTD, + .ppdr = (void __iomem *)MCFGPIO_PORTDP, + .setr = (void __iomem *)MCFGPIO_SETD, + .clrr = (void __iomem *)MCFGPIO_CLRD, + }, + { + .gpio_chip = { + .label = "E", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 72, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRE, + .podr = (void __iomem *)MCFGPIO_PORTE, + .ppdr = (void __iomem *)MCFGPIO_PORTEP, + .setr = (void __iomem *)MCFGPIO_SETE, + .clrr = (void __iomem *)MCFGPIO_CLRE, + }, + { + .gpio_chip = { + .label = "F", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 80, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRF, + .podr = (void __iomem *)MCFGPIO_PORTF, + .ppdr = (void __iomem *)MCFGPIO_PORTFP, + .setr = (void __iomem *)MCFGPIO_SETF, + .clrr = (void __iomem *)MCFGPIO_CLRF, + }, + { + .gpio_chip = { + .label = "G", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 88, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRG, + .podr = (void __iomem *)MCFGPIO_PORTG, + .ppdr = (void __iomem *)MCFGPIO_PORTGP, + .setr = (void __iomem *)MCFGPIO_SETG, + .clrr = (void __iomem *)MCFGPIO_CLRG, + }, + { + .gpio_chip = { + .label = "H", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 96, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRH, + .podr = (void __iomem *)MCFGPIO_PORTH, + .ppdr = (void __iomem *)MCFGPIO_PORTHP, + .setr = (void __iomem *)MCFGPIO_SETH, + .clrr = (void __iomem *)MCFGPIO_CLRH, + }, + { + .gpio_chip = { + .label = "J", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 104, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRJ, + .podr = (void __iomem *)MCFGPIO_PORTJ, + .ppdr = (void __iomem *)MCFGPIO_PORTJP, + .setr = (void __iomem *)MCFGPIO_SETJ, + .clrr = (void __iomem *)MCFGPIO_CLRJ, + }, + { + .gpio_chip = { + .label = "DD", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 112, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDRDD, + .podr = (void __iomem *)MCFGPIO_PORTDD, + .ppdr = (void __iomem *)MCFGPIO_PORTDDP, + .setr = (void __iomem *)MCFGPIO_SETDD, + .clrr = (void __iomem *)MCFGPIO_CLRDD, + }, + { + .gpio_chip = { + .label = "EH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 120, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDREH, + .podr = (void __iomem *)MCFGPIO_PORTEH, + .ppdr = (void __iomem *)MCFGPIO_PORTEHP, + .setr = (void __iomem *)MCFGPIO_SETEH, + .clrr = (void __iomem *)MCFGPIO_CLREH, + }, + { + .gpio_chip = { + .label = "EL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 128, + .ngpio = 8, + }, + .pddr = (void __iomem *)MCFGPIO_DDREL, + .podr = (void __iomem *)MCFGPIO_PORTEL, + .ppdr = (void __iomem *)MCFGPIO_PORTELP, + .setr = (void __iomem *)MCFGPIO_SETEL, + .clrr = (void __iomem *)MCFGPIO_CLREL, + }, + { + .gpio_chip = { + .label = "AS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 136, + .ngpio = 6, + }, + .pddr = (void __iomem *)MCFGPIO_DDRAS, + .podr = (void __iomem *)MCFGPIO_PORTAS, + .ppdr = (void __iomem *)MCFGPIO_PORTASP, + .setr = (void __iomem *)MCFGPIO_SETAS, + .clrr = (void __iomem *)MCFGPIO_CLRAS, + }, + { + .gpio_chip = { + .label = "QS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 144, + .ngpio = 7, + }, + .pddr = (void __iomem *)MCFGPIO_DDRQS, + .podr = (void __iomem *)MCFGPIO_PORTQS, + .ppdr = (void __iomem *)MCFGPIO_PORTQSP, + .setr = (void __iomem *)MCFGPIO_SETQS, + .clrr = (void __iomem *)MCFGPIO_CLRQS, + }, + { + .gpio_chip = { + .label = "SD", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 152, + .ngpio = 6, + }, + .pddr = (void __iomem *)MCFGPIO_DDRSD, + .podr = (void __iomem *)MCFGPIO_PORTSD, + .ppdr = (void __iomem *)MCFGPIO_PORTSDP, + .setr = (void __iomem *)MCFGPIO_SETSD, + .clrr = (void __iomem *)MCFGPIO_CLRSD, + }, + { + .gpio_chip = { + .label = "TC", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 160, + .ngpio = 4, + }, + .pddr = (void __iomem *)MCFGPIO_DDRTC, + .podr = (void __iomem *)MCFGPIO_PORTTC, + .ppdr = (void __iomem *)MCFGPIO_PORTTCP, + .setr = (void __iomem *)MCFGPIO_SETTC, + .clrr = (void __iomem *)MCFGPIO_CLRTC, + }, + { + .gpio_chip = { + .label = "TD", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 168, + .ngpio = 4, + }, + .pddr = (void __iomem *)MCFGPIO_DDRTD, + .podr = (void __iomem *)MCFGPIO_PORTTD, + .ppdr = (void __iomem *)MCFGPIO_PORTTDP, + .setr = (void __iomem *)MCFGPIO_SETTD, + .clrr = (void __iomem *)MCFGPIO_CLRTD, + }, + { + .gpio_chip = { + .label = "UA", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 176, + .ngpio = 4, + }, + .pddr = (void __iomem *)MCFGPIO_DDRUA, + .podr = (void __iomem *)MCFGPIO_PORTUA, + .ppdr = (void __iomem *)MCFGPIO_PORTUAP, + .setr = (void __iomem *)MCFGPIO_SETUA, + .clrr = (void __iomem *)MCFGPIO_CLRUA, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/5307/Makefile b/arch/m68k/platform/5307/Makefile new file mode 100644 index 0000000..d4293b7 --- /dev/null +++ b/arch/m68k/platform/5307/Makefile @@ -0,0 +1,20 @@ +# +# Makefile for the m68knommu kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y += config.o gpio.o +obj-$(CONFIG_NETtel) += nettel.o +obj-$(CONFIG_CLEOPATRA) += nettel.o + diff --git a/arch/m68k/platform/5307/config.c b/arch/m68k/platform/5307/config.c new file mode 100644 index 0000000..00900ac --- /dev/null +++ b/arch/m68k/platform/5307/config.c @@ -0,0 +1,147 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/5307/config.c + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2000, Lineo (www.lineo.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfwdebug.h> + +/***************************************************************************/ + +/* + * Some platforms need software versions of the GPIO data registers. + */ +unsigned short ppdata; +unsigned char ledbank = 0xff; + +/***************************************************************************/ + +static struct mcf_platform_uart m5307_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 73, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 74, + }, + { }, +}; + +static struct platform_device m5307_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m5307_uart_platform, +}; + +static struct platform_device *m5307_devices[] __initdata = { + &m5307_uart, +}; + +/***************************************************************************/ + +static void __init m5307_uart_init_line(int line, int irq) +{ + if (line == 0) { + writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR); + writeb(irq, MCF_MBAR + MCFUART_BASE1 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART0); + } else if (line == 1) { + writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR); + writeb(irq, MCF_MBAR + MCFUART_BASE2 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART1); + } +} + +static void __init m5307_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m5307_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m5307_uart_init_line(line, m5307_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m5307_timers_init(void) +{ + /* Timer1 is always used as system timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER1ICR); + mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1); + +#ifdef CONFIG_HIGHPROFILE + /* Timer2 is to be used as a high speed profile timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER2ICR); + mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2); +#endif +} + +/***************************************************************************/ + +void m5307_cpu_reset(void) +{ + local_irq_disable(); + /* Set watchdog to soft reset, and enabled */ + __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR); + for (;;) + /* wait for watchdog to timeout */; +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ +#if defined(CONFIG_NETtel) || \ + defined(CONFIG_SECUREEDGEMP3) || defined(CONFIG_CLEOPATRA) + /* Copy command line from FLASH to local buffer... */ + memcpy(commandp, (char *) 0xf0004000, size); + commandp[size-1] = 0; +#endif + + mach_reset = m5307_cpu_reset; + m5307_timers_init(); + m5307_uarts_init(); + + /* Only support the external interrupts on their primary level */ + mcf_mapirq2imr(25, MCFINTC_EINT1); + mcf_mapirq2imr(27, MCFINTC_EINT3); + mcf_mapirq2imr(29, MCFINTC_EINT5); + mcf_mapirq2imr(31, MCFINTC_EINT7); + +#ifdef CONFIG_BDM_DISABLE + /* + * Disable the BDM clocking. This also turns off most of the rest of + * the BDM device. This is good for EMC reasons. This option is not + * incompatible with the memory protection option. + */ + wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK); +#endif +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m5307_devices, ARRAY_SIZE(m5307_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/5307/gpio.c b/arch/m68k/platform/5307/gpio.c new file mode 100644 index 0000000..5850612 --- /dev/null +++ b/arch/m68k/platform/5307/gpio.c @@ -0,0 +1,49 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PP", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 16, + }, + .pddr = (void __iomem *) MCFSIM_PADDR, + .podr = (void __iomem *) MCFSIM_PADAT, + .ppdr = (void __iomem *) MCFSIM_PADAT, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/5307/nettel.c b/arch/m68k/platform/5307/nettel.c new file mode 100644 index 0000000..e925ea4 --- /dev/null +++ b/arch/m68k/platform/5307/nettel.c @@ -0,0 +1,153 @@ +/***************************************************************************/ + +/* + * nettel.c -- startup code support for the NETtel boards + * + * Copyright (C) 2009, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/nettel.h> + +/***************************************************************************/ + +/* + * Define the IO and interrupt resources of the 2 SMC9196 interfaces. + */ +#define NETTEL_SMC0_ADDR 0x30600300 +#define NETTEL_SMC0_IRQ 29 + +#define NETTEL_SMC1_ADDR 0x30600000 +#define NETTEL_SMC1_IRQ 27 + +/* + * We need some access into the SMC9196 registers. Define those registers + * we will need here (including the smc91x.h doesn't seem to give us these + * in a simple form). + */ +#define SMC91xx_BANKSELECT 14 +#define SMC91xx_BASEADDR 2 +#define SMC91xx_BASEMAC 4 + +/***************************************************************************/ + +static struct resource nettel_smc91x_0_resources[] = { + { + .start = NETTEL_SMC0_ADDR, + .end = NETTEL_SMC0_ADDR + 0x20, + .flags = IORESOURCE_MEM, + }, + { + .start = NETTEL_SMC0_IRQ, + .end = NETTEL_SMC0_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource nettel_smc91x_1_resources[] = { + { + .start = NETTEL_SMC1_ADDR, + .end = NETTEL_SMC1_ADDR + 0x20, + .flags = IORESOURCE_MEM, + }, + { + .start = NETTEL_SMC1_IRQ, + .end = NETTEL_SMC1_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device nettel_smc91x[] = { + { + .name = "smc91x", + .id = 0, + .num_resources = ARRAY_SIZE(nettel_smc91x_0_resources), + .resource = nettel_smc91x_0_resources, + }, + { + .name = "smc91x", + .id = 1, + .num_resources = ARRAY_SIZE(nettel_smc91x_1_resources), + .resource = nettel_smc91x_1_resources, + }, +}; + +static struct platform_device *nettel_devices[] __initdata = { + &nettel_smc91x[0], + &nettel_smc91x[1], +}; + +/***************************************************************************/ + +static u8 nettel_macdefault[] __initdata = { + 0x00, 0xd0, 0xcf, 0x00, 0x00, 0x01, +}; + +/* + * Set flash contained MAC address into SMC9196 core. Make sure the flash + * MAC address is sane, and not an empty flash. If no good use the Moreton + * Bay default MAC address instead. + */ + +static void __init nettel_smc91x_setmac(unsigned int ioaddr, unsigned int flashaddr) +{ + u16 *macp; + + macp = (u16 *) flashaddr; + if ((macp[0] == 0xffff) && (macp[1] == 0xffff) && (macp[2] == 0xffff)) + macp = (u16 *) &nettel_macdefault[0]; + + writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT); + writew(macp[0], ioaddr + SMC91xx_BASEMAC); + writew(macp[1], ioaddr + SMC91xx_BASEMAC + 2); + writew(macp[2], ioaddr + SMC91xx_BASEMAC + 4); +} + +/***************************************************************************/ + +/* + * Re-map the address space of at least one of the SMC ethernet + * parts. Both parts power up decoding the same address, so we + * need to move one of them first, before doing anything else. + */ + +static void __init nettel_smc91x_init(void) +{ + writew(0x00ec, MCF_MBAR + MCFSIM_PADDR); + mcf_setppdata(0, 0x0080); + writew(1, NETTEL_SMC0_ADDR + SMC91xx_BANKSELECT); + writew(0x0067, NETTEL_SMC0_ADDR + SMC91xx_BASEADDR); + mcf_setppdata(0x0080, 0); + + /* Set correct chip select timing for SMC9196 accesses */ + writew(0x1180, MCF_MBAR + MCFSIM_CSCR3); + + /* Set the SMC interrupts to be auto-vectored */ + mcf_autovector(NETTEL_SMC0_IRQ); + mcf_autovector(NETTEL_SMC1_IRQ); + + /* Set MAC addresses from flash for both interfaces */ + nettel_smc91x_setmac(NETTEL_SMC0_ADDR, 0xf0006000); + nettel_smc91x_setmac(NETTEL_SMC1_ADDR, 0xf0006006); +} + +/***************************************************************************/ + +static int __init init_nettel(void) +{ + nettel_smc91x_init(); + platform_add_devices(nettel_devices, ARRAY_SIZE(nettel_devices)); + return 0; +} + +arch_initcall(init_nettel); + +/***************************************************************************/ diff --git a/arch/m68k/platform/532x/Makefile b/arch/m68k/platform/532x/Makefile new file mode 100644 index 0000000..ce01669 --- /dev/null +++ b/arch/m68k/platform/532x/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +#obj-y := config.o usb-mcf532x.o spi-mcf532x.o +obj-y := config.o gpio.o diff --git a/arch/m68k/platform/532x/config.c b/arch/m68k/platform/532x/config.c new file mode 100644 index 0000000..ca51323 --- /dev/null +++ b/arch/m68k/platform/532x/config.c @@ -0,0 +1,648 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/532x/config.c + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2000, Lineo (www.lineo.com) + * Yaroslav Vinogradov yaroslav.vinogradov@freescale.com + * Copyright Freescale Semiconductor, Inc 2006 + * Copyright (c) 2006, emlix, Sebastian Hess <sh@emlix.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> +#include <asm/mcfdma.h> +#include <asm/mcfwdebug.h> +#include <asm/mcfqspi.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m532x_uart_platform[] = { + { + .mapbase = MCFUART_BASE1, + .irq = MCFINT_VECBASE + MCFINT_UART0, + }, + { + .mapbase = MCFUART_BASE2, + .irq = MCFINT_VECBASE + MCFINT_UART1, + }, + { + .mapbase = MCFUART_BASE3, + .irq = MCFINT_VECBASE + MCFINT_UART2, + }, + { }, +}; + +static struct platform_device m532x_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m532x_uart_platform, +}; + +static struct resource m532x_fec_resources[] = { + { + .start = 0xfc030000, + .end = 0xfc0307ff, + .flags = IORESOURCE_MEM, + }, + { + .start = 64 + 36, + .end = 64 + 36, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 40, + .end = 64 + 40, + .flags = IORESOURCE_IRQ, + }, + { + .start = 64 + 42, + .end = 64 + 42, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device m532x_fec = { + .name = "fec", + .id = 0, + .num_resources = ARRAY_SIZE(m532x_fec_resources), + .resource = m532x_fec_resources, +}; + +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) +static struct resource m532x_qspi_resources[] = { + { + .start = MCFQSPI_IOBASE, + .end = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = MCFINT_VECBASE + MCFINT_QSPI, + .end = MCFINT_VECBASE + MCFINT_QSPI, + .flags = IORESOURCE_IRQ, + }, +}; + +#define MCFQSPI_CS0 84 +#define MCFQSPI_CS1 85 +#define MCFQSPI_CS2 86 + +static int m532x_cs_setup(struct mcfqspi_cs_control *cs_control) +{ + int status; + + status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS0 failed\n"); + goto fail0; + } + status = gpio_direction_output(MCFQSPI_CS0, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n"); + goto fail1; + } + + status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS1 failed\n"); + goto fail1; + } + status = gpio_direction_output(MCFQSPI_CS1, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n"); + goto fail2; + } + + status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2"); + if (status) { + pr_debug("gpio_request for MCFQSPI_CS2 failed\n"); + goto fail2; + } + status = gpio_direction_output(MCFQSPI_CS2, 1); + if (status) { + pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n"); + goto fail3; + } + + return 0; + +fail3: + gpio_free(MCFQSPI_CS2); +fail2: + gpio_free(MCFQSPI_CS1); +fail1: + gpio_free(MCFQSPI_CS0); +fail0: + return status; +} + +static void m532x_cs_teardown(struct mcfqspi_cs_control *cs_control) +{ + gpio_free(MCFQSPI_CS2); + gpio_free(MCFQSPI_CS1); + gpio_free(MCFQSPI_CS0); +} + +static void m532x_cs_select(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + gpio_set_value(MCFQSPI_CS0 + chip_select, cs_high); +} + +static void m532x_cs_deselect(struct mcfqspi_cs_control *cs_control, + u8 chip_select, bool cs_high) +{ + gpio_set_value(MCFQSPI_CS0 + chip_select, !cs_high); +} + +static struct mcfqspi_cs_control m532x_cs_control = { + .setup = m532x_cs_setup, + .teardown = m532x_cs_teardown, + .select = m532x_cs_select, + .deselect = m532x_cs_deselect, +}; + +static struct mcfqspi_platform_data m532x_qspi_data = { + .bus_num = 0, + .num_chipselect = 3, + .cs_control = &m532x_cs_control, +}; + +static struct platform_device m532x_qspi = { + .name = "mcfqspi", + .id = 0, + .num_resources = ARRAY_SIZE(m532x_qspi_resources), + .resource = m532x_qspi_resources, + .dev.platform_data = &m532x_qspi_data, +}; + +static void __init m532x_qspi_init(void) +{ + /* setup QSPS pins for QSPI with gpio CS control */ + writew(0x01f0, MCF_GPIO_PAR_QSPI); +} +#endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */ + + +static struct platform_device *m532x_devices[] __initdata = { + &m532x_uart, + &m532x_fec, +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + &m532x_qspi, +#endif +}; + +/***************************************************************************/ + +static void __init m532x_uart_init_line(int line, int irq) +{ + if (line == 0) { + /* GPIO initialization */ + MCF_GPIO_PAR_UART |= 0x000F; + } else if (line == 1) { + /* GPIO initialization */ + MCF_GPIO_PAR_UART |= 0x0FF0; + } +} + +static void __init m532x_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m532x_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m532x_uart_init_line(line, m532x_uart_platform[line].irq); +} +/***************************************************************************/ + +static void __init m532x_fec_init(void) +{ + /* Set multi-function pins to ethernet mode for fec0 */ + MCF_GPIO_PAR_FECI2C |= (MCF_GPIO_PAR_FECI2C_PAR_MDC_EMDC | + MCF_GPIO_PAR_FECI2C_PAR_MDIO_EMDIO); + MCF_GPIO_PAR_FEC = (MCF_GPIO_PAR_FEC_PAR_FEC_7W_FEC | + MCF_GPIO_PAR_FEC_PAR_FEC_MII_FEC); +} + +/***************************************************************************/ + +static void m532x_cpu_reset(void) +{ + local_irq_disable(); + __raw_writeb(MCF_RCR_SWRESET, MCF_RCR); +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ +#if !defined(CONFIG_BOOTPARAM) + /* Copy command line from FLASH to local buffer... */ + memcpy(commandp, (char *) 0x4000, 4); + if(strncmp(commandp, "kcl ", 4) == 0){ + memcpy(commandp, (char *) 0x4004, size); + commandp[size-1] = 0; + } else { + memset(commandp, 0, size); + } +#endif + +#ifdef CONFIG_BDM_DISABLE + /* + * Disable the BDM clocking. This also turns off most of the rest of + * the BDM device. This is good for EMC reasons. This option is not + * incompatible with the memory protection option. + */ + wdebug(MCFDEBUG_CSR, MCFDEBUG_CSR_PSTCLK); +#endif +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + m532x_uarts_init(); + m532x_fec_init(); +#if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) + m532x_qspi_init(); +#endif + platform_add_devices(m532x_devices, ARRAY_SIZE(m532x_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ +/* Board initialization */ +/***************************************************************************/ +/* + * PLL min/max specifications + */ +#define MAX_FVCO 500000 /* KHz */ +#define MAX_FSYS 80000 /* KHz */ +#define MIN_FSYS 58333 /* KHz */ +#define FREF 16000 /* KHz */ + + +#define MAX_MFD 135 /* Multiplier */ +#define MIN_MFD 88 /* Multiplier */ +#define BUSDIV 6 /* Divider */ + +/* + * Low Power Divider specifications + */ +#define MIN_LPD (1 << 0) /* Divider (not encoded) */ +#define MAX_LPD (1 << 15) /* Divider (not encoded) */ +#define DEFAULT_LPD (1 << 1) /* Divider (not encoded) */ + +#define SYS_CLK_KHZ 80000 +#define SYSTEM_PERIOD 12.5 +/* + * SDRAM Timing Parameters + */ +#define SDRAM_BL 8 /* # of beats in a burst */ +#define SDRAM_TWR 2 /* in clocks */ +#define SDRAM_CASL 2.5 /* CASL in clocks */ +#define SDRAM_TRCD 2 /* in clocks */ +#define SDRAM_TRP 2 /* in clocks */ +#define SDRAM_TRFC 7 /* in clocks */ +#define SDRAM_TREFI 7800 /* in ns */ + +#define EXT_SRAM_ADDRESS (0xC0000000) +#define FLASH_ADDRESS (0x00000000) +#define SDRAM_ADDRESS (0x40000000) + +#define NAND_FLASH_ADDRESS (0xD0000000) + +int sys_clk_khz = 0; +int sys_clk_mhz = 0; + +void wtm_init(void); +void scm_init(void); +void gpio_init(void); +void fbcs_init(void); +void sdramc_init(void); +int clock_pll (int fsys, int flags); +int clock_limp (int); +int clock_exit_limp (void); +int get_sys_clock (void); + +asmlinkage void __init sysinit(void) +{ + sys_clk_khz = clock_pll(0, 0); + sys_clk_mhz = sys_clk_khz/1000; + + wtm_init(); + scm_init(); + gpio_init(); + fbcs_init(); + sdramc_init(); +} + +void wtm_init(void) +{ + /* Disable watchdog timer */ + MCF_WTM_WCR = 0; +} + +#define MCF_SCM_BCR_GBW (0x00000100) +#define MCF_SCM_BCR_GBR (0x00000200) + +void scm_init(void) +{ + /* All masters are trusted */ + MCF_SCM_MPR = 0x77777777; + + /* Allow supervisor/user, read/write, and trusted/untrusted + access to all slaves */ + MCF_SCM_PACRA = 0; + MCF_SCM_PACRB = 0; + MCF_SCM_PACRC = 0; + MCF_SCM_PACRD = 0; + MCF_SCM_PACRE = 0; + MCF_SCM_PACRF = 0; + + /* Enable bursts */ + MCF_SCM_BCR = (MCF_SCM_BCR_GBR | MCF_SCM_BCR_GBW); +} + + +void fbcs_init(void) +{ + MCF_GPIO_PAR_CS = 0x0000003E; + + /* Latch chip select */ + MCF_FBCS1_CSAR = 0x10080000; + + MCF_FBCS1_CSCR = 0x002A3780; + MCF_FBCS1_CSMR = (MCF_FBCS_CSMR_BAM_2M | MCF_FBCS_CSMR_V); + + /* Initialize latch to drive signals to inactive states */ + *((u16 *)(0x10080000)) = 0xFFFF; + + /* External SRAM */ + MCF_FBCS1_CSAR = EXT_SRAM_ADDRESS; + MCF_FBCS1_CSCR = (MCF_FBCS_CSCR_PS_16 + | MCF_FBCS_CSCR_AA + | MCF_FBCS_CSCR_SBM + | MCF_FBCS_CSCR_WS(1)); + MCF_FBCS1_CSMR = (MCF_FBCS_CSMR_BAM_512K + | MCF_FBCS_CSMR_V); + + /* Boot Flash connected to FBCS0 */ + MCF_FBCS0_CSAR = FLASH_ADDRESS; + MCF_FBCS0_CSCR = (MCF_FBCS_CSCR_PS_16 + | MCF_FBCS_CSCR_BEM + | MCF_FBCS_CSCR_AA + | MCF_FBCS_CSCR_SBM + | MCF_FBCS_CSCR_WS(7)); + MCF_FBCS0_CSMR = (MCF_FBCS_CSMR_BAM_32M + | MCF_FBCS_CSMR_V); +} + +void sdramc_init(void) +{ + /* + * Check to see if the SDRAM has already been initialized + * by a run control tool + */ + if (!(MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF)) { + /* SDRAM chip select initialization */ + + /* Initialize SDRAM chip select */ + MCF_SDRAMC_SDCS0 = (0 + | MCF_SDRAMC_SDCS_BA(SDRAM_ADDRESS) + | MCF_SDRAMC_SDCS_CSSZ(MCF_SDRAMC_SDCS_CSSZ_32MBYTE)); + + /* + * Basic configuration and initialization + */ + MCF_SDRAMC_SDCFG1 = (0 + | MCF_SDRAMC_SDCFG1_SRD2RW((int)((SDRAM_CASL + 2) + 0.5 )) + | MCF_SDRAMC_SDCFG1_SWT2RD(SDRAM_TWR + 1) + | MCF_SDRAMC_SDCFG1_RDLAT((int)((SDRAM_CASL*2) + 2)) + | MCF_SDRAMC_SDCFG1_ACT2RW((int)((SDRAM_TRCD ) + 0.5)) + | MCF_SDRAMC_SDCFG1_PRE2ACT((int)((SDRAM_TRP ) + 0.5)) + | MCF_SDRAMC_SDCFG1_REF2ACT((int)(((SDRAM_TRFC) ) + 0.5)) + | MCF_SDRAMC_SDCFG1_WTLAT(3)); + MCF_SDRAMC_SDCFG2 = (0 + | MCF_SDRAMC_SDCFG2_BRD2PRE(SDRAM_BL/2 + 1) + | MCF_SDRAMC_SDCFG2_BWT2RW(SDRAM_BL/2 + SDRAM_TWR) + | MCF_SDRAMC_SDCFG2_BRD2WT((int)((SDRAM_CASL+SDRAM_BL/2-1.0)+0.5)) + | MCF_SDRAMC_SDCFG2_BL(SDRAM_BL-1)); + + + /* + * Precharge and enable write to SDMR + */ + MCF_SDRAMC_SDCR = (0 + | MCF_SDRAMC_SDCR_MODE_EN + | MCF_SDRAMC_SDCR_CKE + | MCF_SDRAMC_SDCR_DDR + | MCF_SDRAMC_SDCR_MUX(1) + | MCF_SDRAMC_SDCR_RCNT((int)(((SDRAM_TREFI/(SYSTEM_PERIOD*64)) - 1) + 0.5)) + | MCF_SDRAMC_SDCR_PS_16 + | MCF_SDRAMC_SDCR_IPALL); + + /* + * Write extended mode register + */ + MCF_SDRAMC_SDMR = (0 + | MCF_SDRAMC_SDMR_BNKAD_LEMR + | MCF_SDRAMC_SDMR_AD(0x0) + | MCF_SDRAMC_SDMR_CMD); + + /* + * Write mode register and reset DLL + */ + MCF_SDRAMC_SDMR = (0 + | MCF_SDRAMC_SDMR_BNKAD_LMR + | MCF_SDRAMC_SDMR_AD(0x163) + | MCF_SDRAMC_SDMR_CMD); + + /* + * Execute a PALL command + */ + MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IPALL; + + /* + * Perform two REF cycles + */ + MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IREF; + MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_IREF; + + /* + * Write mode register and clear reset DLL + */ + MCF_SDRAMC_SDMR = (0 + | MCF_SDRAMC_SDMR_BNKAD_LMR + | MCF_SDRAMC_SDMR_AD(0x063) + | MCF_SDRAMC_SDMR_CMD); + + /* + * Enable auto refresh and lock SDMR + */ + MCF_SDRAMC_SDCR &= ~MCF_SDRAMC_SDCR_MODE_EN; + MCF_SDRAMC_SDCR |= (0 + | MCF_SDRAMC_SDCR_REF + | MCF_SDRAMC_SDCR_DQS_OE(0xC)); + } +} + +void gpio_init(void) +{ + /* Enable UART0 pins */ + MCF_GPIO_PAR_UART = ( 0 + | MCF_GPIO_PAR_UART_PAR_URXD0 + | MCF_GPIO_PAR_UART_PAR_UTXD0); + + /* Initialize TIN3 as a GPIO output to enable the write + half of the latch */ + MCF_GPIO_PAR_TIMER = 0x00; + __raw_writeb(0x08, MCFGPIO_PDDR_TIMER); + __raw_writeb(0x00, MCFGPIO_PCLRR_TIMER); + +} + +int clock_pll(int fsys, int flags) +{ + int fref, temp, fout, mfd; + u32 i; + + fref = FREF; + + if (fsys == 0) { + /* Return current PLL output */ + mfd = MCF_PLL_PFDR; + + return (fref * mfd / (BUSDIV * 4)); + } + + /* Check bounds of requested system clock */ + if (fsys > MAX_FSYS) + fsys = MAX_FSYS; + if (fsys < MIN_FSYS) + fsys = MIN_FSYS; + + /* Multiplying by 100 when calculating the temp value, + and then dividing by 100 to calculate the mfd allows + for exact values without needing to include floating + point libraries. */ + temp = 100 * fsys / fref; + mfd = 4 * BUSDIV * temp / 100; + + /* Determine the output frequency for selected values */ + fout = (fref * mfd / (BUSDIV * 4)); + + /* + * Check to see if the SDRAM has already been initialized. + * If it has then the SDRAM needs to be put into self refresh + * mode before reprogramming the PLL. + */ + if (MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF) + /* Put SDRAM into self refresh mode */ + MCF_SDRAMC_SDCR &= ~MCF_SDRAMC_SDCR_CKE; + + /* + * Initialize the PLL to generate the new system clock frequency. + * The device must be put into LIMP mode to reprogram the PLL. + */ + + /* Enter LIMP mode */ + clock_limp(DEFAULT_LPD); + + /* Reprogram PLL for desired fsys */ + MCF_PLL_PODR = (0 + | MCF_PLL_PODR_CPUDIV(BUSDIV/3) + | MCF_PLL_PODR_BUSDIV(BUSDIV)); + + MCF_PLL_PFDR = mfd; + + /* Exit LIMP mode */ + clock_exit_limp(); + + /* + * Return the SDRAM to normal operation if it is in use. + */ + if (MCF_SDRAMC_SDCR & MCF_SDRAMC_SDCR_REF) + /* Exit self refresh mode */ + MCF_SDRAMC_SDCR |= MCF_SDRAMC_SDCR_CKE; + + /* Errata - workaround for SDRAM opeartion after exiting LIMP mode */ + MCF_SDRAMC_LIMP_FIX = MCF_SDRAMC_REFRESH; + + /* wait for DQS logic to relock */ + for (i = 0; i < 0x200; i++) + ; + + return fout; +} + +int clock_limp(int div) +{ + u32 temp; + + /* Check bounds of divider */ + if (div < MIN_LPD) + div = MIN_LPD; + if (div > MAX_LPD) + div = MAX_LPD; + + /* Save of the current value of the SSIDIV so we don't + overwrite the value*/ + temp = (MCF_CCM_CDR & MCF_CCM_CDR_SSIDIV(0xF)); + + /* Apply the divider to the system clock */ + MCF_CCM_CDR = ( 0 + | MCF_CCM_CDR_LPDIV(div) + | MCF_CCM_CDR_SSIDIV(temp)); + + MCF_CCM_MISCCR |= MCF_CCM_MISCCR_LIMP; + + return (FREF/(3*(1 << div))); +} + +int clock_exit_limp(void) +{ + int fout; + + /* Exit LIMP mode */ + MCF_CCM_MISCCR = (MCF_CCM_MISCCR & ~ MCF_CCM_MISCCR_LIMP); + + /* Wait for PLL to lock */ + while (!(MCF_CCM_MISCCR & MCF_CCM_MISCCR_PLL_LOCK)) + ; + + fout = get_sys_clock(); + + return fout; +} + +int get_sys_clock(void) +{ + int divider; + + /* Test to see if device is in LIMP mode */ + if (MCF_CCM_MISCCR & MCF_CCM_MISCCR_LIMP) { + divider = MCF_CCM_CDR & MCF_CCM_CDR_LPDIV(0xF); + return (FREF/(2 << divider)); + } + else + return ((FREF * MCF_PLL_PFDR) / (BUSDIV * 4)); +} diff --git a/arch/m68k/platform/532x/gpio.c b/arch/m68k/platform/532x/gpio.c new file mode 100644 index 0000000..212a85d --- /dev/null +++ b/arch/m68k/platform/532x/gpio.c @@ -0,0 +1,337 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PIRQ", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFEPORT_EPDDR, + .podr = (void __iomem *) MCFEPORT_EPDR, + .ppdr = (void __iomem *) MCFEPORT_EPPDR, + }, + { + .gpio_chip = { + .label = "FECH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 8, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECH, + .podr = (void __iomem *) MCFGPIO_PODR_FECH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECH, + }, + { + .gpio_chip = { + .label = "FECL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 16, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECL, + .podr = (void __iomem *) MCFGPIO_PODR_FECL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECL, + }, + { + .gpio_chip = { + .label = "SSI", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 24, + .ngpio = 5, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_SSI, + .podr = (void __iomem *) MCFGPIO_PODR_SSI, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_SSI, + .setr = (void __iomem *) MCFGPIO_PPDSDR_SSI, + .clrr = (void __iomem *) MCFGPIO_PCLRR_SSI, + }, + { + .gpio_chip = { + .label = "BUSCTL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 32, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BUSCTL, + .podr = (void __iomem *) MCFGPIO_PODR_BUSCTL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BUSCTL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BUSCTL, + }, + { + .gpio_chip = { + .label = "BE", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 40, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_BE, + .podr = (void __iomem *) MCFGPIO_PODR_BE, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_BE, + .setr = (void __iomem *) MCFGPIO_PPDSDR_BE, + .clrr = (void __iomem *) MCFGPIO_PCLRR_BE, + }, + { + .gpio_chip = { + .label = "CS", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 49, + .ngpio = 5, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_CS, + .podr = (void __iomem *) MCFGPIO_PODR_CS, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .setr = (void __iomem *) MCFGPIO_PPDSDR_CS, + .clrr = (void __iomem *) MCFGPIO_PCLRR_CS, + }, + { + .gpio_chip = { + .label = "PWM", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 58, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_PWM, + .podr = (void __iomem *) MCFGPIO_PODR_PWM, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_PWM, + .setr = (void __iomem *) MCFGPIO_PPDSDR_PWM, + .clrr = (void __iomem *) MCFGPIO_PCLRR_PWM, + }, + { + .gpio_chip = { + .label = "FECI2C", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 64, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_FECI2C, + .podr = (void __iomem *) MCFGPIO_PODR_FECI2C, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .setr = (void __iomem *) MCFGPIO_PPDSDR_FECI2C, + .clrr = (void __iomem *) MCFGPIO_PCLRR_FECI2C, + }, + { + .gpio_chip = { + .label = "UART", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 72, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_UART, + .podr = (void __iomem *) MCFGPIO_PODR_UART, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_UART, + .setr = (void __iomem *) MCFGPIO_PPDSDR_UART, + .clrr = (void __iomem *) MCFGPIO_PCLRR_UART, + }, + { + .gpio_chip = { + .label = "QSPI", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 80, + .ngpio = 6, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_QSPI, + .podr = (void __iomem *) MCFGPIO_PODR_QSPI, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .setr = (void __iomem *) MCFGPIO_PPDSDR_QSPI, + .clrr = (void __iomem *) MCFGPIO_PCLRR_QSPI, + }, + { + .gpio_chip = { + .label = "TIMER", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 88, + .ngpio = 4, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_TIMER, + .podr = (void __iomem *) MCFGPIO_PODR_TIMER, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .setr = (void __iomem *) MCFGPIO_PPDSDR_TIMER, + .clrr = (void __iomem *) MCFGPIO_PCLRR_TIMER, + }, + { + .gpio_chip = { + .label = "LCDDATAH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 96, + .ngpio = 2, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_LCDDATAH, + .podr = (void __iomem *) MCFGPIO_PODR_LCDDATAH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_LCDDATAH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_LCDDATAH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_LCDDATAH, + }, + { + .gpio_chip = { + .label = "LCDDATAM", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 104, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_LCDDATAM, + .podr = (void __iomem *) MCFGPIO_PODR_LCDDATAM, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_LCDDATAM, + .setr = (void __iomem *) MCFGPIO_PPDSDR_LCDDATAM, + .clrr = (void __iomem *) MCFGPIO_PCLRR_LCDDATAM, + }, + { + .gpio_chip = { + .label = "LCDDATAL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 112, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_LCDDATAL, + .podr = (void __iomem *) MCFGPIO_PODR_LCDDATAL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_LCDDATAL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_LCDDATAL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_LCDDATAL, + }, + { + .gpio_chip = { + .label = "LCDCTLH", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 120, + .ngpio = 1, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_LCDCTLH, + .podr = (void __iomem *) MCFGPIO_PODR_LCDCTLH, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_LCDCTLH, + .setr = (void __iomem *) MCFGPIO_PPDSDR_LCDCTLH, + .clrr = (void __iomem *) MCFGPIO_PCLRR_LCDCTLH, + }, + { + .gpio_chip = { + .label = "LCDCTLL", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value_fast, + .base = 128, + .ngpio = 8, + }, + .pddr = (void __iomem *) MCFGPIO_PDDR_LCDCTLL, + .podr = (void __iomem *) MCFGPIO_PODR_LCDCTLL, + .ppdr = (void __iomem *) MCFGPIO_PPDSDR_LCDCTLL, + .setr = (void __iomem *) MCFGPIO_PPDSDR_LCDCTLL, + .clrr = (void __iomem *) MCFGPIO_PCLRR_LCDCTLL, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/5407/Makefile b/arch/m68k/platform/5407/Makefile new file mode 100644 index 0000000..e83fe14 --- /dev/null +++ b/arch/m68k/platform/5407/Makefile @@ -0,0 +1,18 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o gpio.o + diff --git a/arch/m68k/platform/5407/config.c b/arch/m68k/platform/5407/config.c new file mode 100644 index 0000000..70ea789 --- /dev/null +++ b/arch/m68k/platform/5407/config.c @@ -0,0 +1,122 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/5407/config.c + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2000, Lineo (www.lineo.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfuart.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m5407_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 73, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 74, + }, + { }, +}; + +static struct platform_device m5407_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m5407_uart_platform, +}; + +static struct platform_device *m5407_devices[] __initdata = { + &m5407_uart, +}; + +/***************************************************************************/ + +static void __init m5407_uart_init_line(int line, int irq) +{ + if (line == 0) { + writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR); + writeb(irq, MCF_MBAR + MCFUART_BASE1 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART0); + } else if (line == 1) { + writeb(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR); + writeb(irq, MCF_MBAR + MCFUART_BASE2 + MCFUART_UIVR); + mcf_mapirq2imr(irq, MCFINTC_UART1); + } +} + +static void __init m5407_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m5407_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m5407_uart_init_line(line, m5407_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void __init m5407_timers_init(void) +{ + /* Timer1 is always used as system timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER1ICR); + mcf_mapirq2imr(MCF_IRQ_TIMER, MCFINTC_TIMER1); + +#ifdef CONFIG_HIGHPROFILE + /* Timer2 is to be used as a high speed profile timer */ + writeb(MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3, + MCF_MBAR + MCFSIM_TIMER2ICR); + mcf_mapirq2imr(MCF_IRQ_PROFILER, MCFINTC_TIMER2); +#endif +} + +/***************************************************************************/ + +void m5407_cpu_reset(void) +{ + local_irq_disable(); + /* set watchdog to soft reset, and enabled */ + __raw_writeb(0xc0, MCF_MBAR + MCFSIM_SYPCR); + for (;;) + /* wait for watchdog to timeout */; +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = m5407_cpu_reset; + m5407_timers_init(); + m5407_uarts_init(); + + /* Only support the external interrupts on their primary level */ + mcf_mapirq2imr(25, MCFINTC_EINT1); + mcf_mapirq2imr(27, MCFINTC_EINT3); + mcf_mapirq2imr(29, MCFINTC_EINT5); + mcf_mapirq2imr(31, MCFINTC_EINT7); +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + platform_add_devices(m5407_devices, ARRAY_SIZE(m5407_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/5407/gpio.c b/arch/m68k/platform/5407/gpio.c new file mode 100644 index 0000000..5850612 --- /dev/null +++ b/arch/m68k/platform/5407/gpio.c @@ -0,0 +1,49 @@ +/* + * Coldfire generic GPIO support + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfgpio.h> + +static struct mcf_gpio_chip mcf_gpio_chips[] = { + { + .gpio_chip = { + .label = "PP", + .request = mcf_gpio_request, + .free = mcf_gpio_free, + .direction_input = mcf_gpio_direction_input, + .direction_output = mcf_gpio_direction_output, + .get = mcf_gpio_get_value, + .set = mcf_gpio_set_value, + .ngpio = 16, + }, + .pddr = (void __iomem *) MCFSIM_PADDR, + .podr = (void __iomem *) MCFSIM_PADAT, + .ppdr = (void __iomem *) MCFSIM_PADAT, + }, +}; + +static int __init mcf_gpio_init(void) +{ + unsigned i = 0; + while (i < ARRAY_SIZE(mcf_gpio_chips)) + (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]); + return 0; +} + +core_initcall(mcf_gpio_init); diff --git a/arch/m68k/platform/54xx/Makefile b/arch/m68k/platform/54xx/Makefile new file mode 100644 index 0000000..6cfd090 --- /dev/null +++ b/arch/m68k/platform/54xx/Makefile @@ -0,0 +1,19 @@ +# +# Makefile for the m68knommu linux kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT +# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-y := config.o +obj-$(CONFIG_FIREBEE) += firebee.o + diff --git a/arch/m68k/platform/54xx/config.c b/arch/m68k/platform/54xx/config.c new file mode 100644 index 0000000..7813098 --- /dev/null +++ b/arch/m68k/platform/54xx/config.c @@ -0,0 +1,115 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/54xx/config.c + * + * Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be> + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/m54xxsim.h> +#include <asm/mcfuart.h> +#include <asm/m54xxgpt.h> + +/***************************************************************************/ + +static struct mcf_platform_uart m54xx_uart_platform[] = { + { + .mapbase = MCF_MBAR + MCFUART_BASE1, + .irq = 64 + 35, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE2, + .irq = 64 + 34, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE3, + .irq = 64 + 33, + }, + { + .mapbase = MCF_MBAR + MCFUART_BASE4, + .irq = 64 + 32, + }, +}; + +static struct platform_device m54xx_uart = { + .name = "mcfuart", + .id = 0, + .dev.platform_data = m54xx_uart_platform, +}; + +static struct platform_device *m54xx_devices[] __initdata = { + &m54xx_uart, +}; + + +/***************************************************************************/ + +static void __init m54xx_uart_init_line(int line, int irq) +{ + int rts_cts; + + /* enable io pins */ + switch (line) { + case 0: + rts_cts = 0; break; + case 1: + rts_cts = MCF_PAR_PSC_RTS_RTS; break; + case 2: + rts_cts = MCF_PAR_PSC_RTS_RTS | MCF_PAR_PSC_CTS_CTS; break; + case 3: + rts_cts = 0; break; + } + __raw_writeb(MCF_PAR_PSC_TXD | rts_cts | MCF_PAR_PSC_RXD, + MCF_MBAR + MCF_PAR_PSC(line)); +} + +static void __init m54xx_uarts_init(void) +{ + const int nrlines = ARRAY_SIZE(m54xx_uart_platform); + int line; + + for (line = 0; (line < nrlines); line++) + m54xx_uart_init_line(line, m54xx_uart_platform[line].irq); +} + +/***************************************************************************/ + +static void mcf54xx_reset(void) +{ + /* disable interrupts and enable the watchdog */ + asm("movew #0x2700, %sr\n"); + __raw_writel(0, MCF_MBAR + MCF_GPT_GMS0); + __raw_writel(MCF_GPT_GCIR_CNT(1), MCF_MBAR + MCF_GPT_GCIR0); + __raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4), + MCF_MBAR + MCF_GPT_GMS0); +} + +/***************************************************************************/ + +void __init config_BSP(char *commandp, int size) +{ + mach_reset = mcf54xx_reset; + m54xx_uarts_init(); +} + +/***************************************************************************/ + +static int __init init_BSP(void) +{ + + platform_add_devices(m54xx_devices, ARRAY_SIZE(m54xx_devices)); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ diff --git a/arch/m68k/platform/54xx/firebee.c b/arch/m68k/platform/54xx/firebee.c new file mode 100644 index 0000000..46d5053 --- /dev/null +++ b/arch/m68k/platform/54xx/firebee.c @@ -0,0 +1,86 @@ +/***************************************************************************/ + +/* + * firebee.c -- extra startup code support for the FireBee boards + * + * Copyright (C) 2011, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ + +/* + * 8MB of NOR flash fitted to the FireBee board. + */ +#define FLASH_PHYS_ADDR 0xe0000000 /* Physical address of flash */ +#define FLASH_PHYS_SIZE 0x00800000 /* Size of flash */ + +#define PART_BOOT_START 0x00000000 /* Start at bottom of flash */ +#define PART_BOOT_SIZE 0x00040000 /* 256k in size */ +#define PART_IMAGE_START 0x00040000 /* Start after boot loader */ +#define PART_IMAGE_SIZE 0x006c0000 /* Most of flash */ +#define PART_FPGA_START 0x00700000 /* Start at offset 7MB */ +#define PART_FPGA_SIZE 0x00100000 /* 1MB in size */ + +static struct mtd_partition firebee_flash_parts[] = { + { + .name = "dBUG", + .offset = PART_BOOT_START, + .size = PART_BOOT_SIZE, + }, + { + .name = "FPGA", + .offset = PART_FPGA_START, + .size = PART_FPGA_SIZE, + }, + { + .name = "image", + .offset = PART_IMAGE_START, + .size = PART_IMAGE_SIZE, + }, +}; + +static struct physmap_flash_data firebee_flash_data = { + .width = 2, + .nr_parts = ARRAY_SIZE(firebee_flash_parts), + .parts = firebee_flash_parts, +}; + +static struct resource firebee_flash_resource = { + .start = FLASH_PHYS_ADDR, + .end = FLASH_PHYS_ADDR + FLASH_PHYS_SIZE, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device firebee_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &firebee_flash_data, + }, + .num_resources = 1, + .resource = &firebee_flash_resource, +}; + +/***************************************************************************/ + +static int __init init_firebee(void) +{ + platform_device_register(&firebee_flash); + return 0; +} + +arch_initcall(init_firebee); + +/***************************************************************************/ diff --git a/arch/m68k/platform/68328/Makefile b/arch/m68k/platform/68328/Makefile new file mode 100644 index 0000000..5e54355 --- /dev/null +++ b/arch/m68k/platform/68328/Makefile @@ -0,0 +1,22 @@ +# +# Makefile for arch/m68knommu/platform/68328. +# + +head-y = head-$(MODEL).o +head-$(CONFIG_PILOT) = head-pilot.o +head-$(CONFIG_DRAGEN2) = head-de2.o + +obj-y += entry.o ints.o timers.o +obj-$(CONFIG_M68328) += config.o +obj-$(CONFIG_ROM) += romvec.o + +extra-y := head.o +extra-$(CONFIG_M68328) += bootlogo.rh head.o + +$(obj)/bootlogo.rh: $(src)/bootlogo.h + perl $(src)/bootlogo.pl < $(src)/bootlogo.h > $(obj)/bootlogo.rh + +$(obj)/head.o: $(obj)/$(head-y) + ln -sf $(head-y) $(obj)/head.o + +clean-files := $(obj)/bootlogo.rh $(obj)/head.o $(head-y) diff --git a/arch/m68k/platform/68328/bootlogo.h b/arch/m68k/platform/68328/bootlogo.h new file mode 100644 index 0000000..67bc2c1 --- /dev/null +++ b/arch/m68k/platform/68328/bootlogo.h @@ -0,0 +1,270 @@ +#define bootlogo_width 160 +#define bootlogo_height 160 +static unsigned char bootlogo_bits[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x01, 0x00, 0x00, 0x00, + 0x00, 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.byte /gm; +s/[,};]+$//gm; +s/^static.*//gm; + +print $_; diff --git a/arch/m68k/platform/68328/config.c b/arch/m68k/platform/68328/config.c new file mode 100644 index 0000000..a7bd21d --- /dev/null +++ b/arch/m68k/platform/68328/config.c @@ -0,0 +1,52 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/68328/config.c + * + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * VZ Support/Fixes Evan Stawnyczy <e@lineo.ca> + */ + +/***************************************************************************/ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <asm/system.h> +#include <asm/machdep.h> +#include <asm/MC68328.h> + +/***************************************************************************/ + +void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec); + +/***************************************************************************/ + +void m68328_reset (void) +{ + local_irq_disable(); + asm volatile ("moveal #0x10c00000, %a0;\n\t" + "moveb #0, 0xFFFFF300;\n\t" + "moveal 0(%a0), %sp;\n\t" + "moveal 4(%a0), %a0;\n\t" + "jmp (%a0);"); +} + +/***************************************************************************/ + +void config_BSP(char *command, int len) +{ + printk(KERN_INFO "\n68328 support D. Jeff Dionne <jeff@uclinux.org>\n"); + printk(KERN_INFO "68328 support Kenneth Albanowski <kjahds@kjshds.com>\n"); + printk(KERN_INFO "68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n"); + + mach_gettod = m68328_timer_gettod; + mach_reset = m68328_reset; +} + +/***************************************************************************/ diff --git a/arch/m68k/platform/68328/entry.S b/arch/m68k/platform/68328/entry.S new file mode 100644 index 0000000..676960c --- /dev/null +++ b/arch/m68k/platform/68328/entry.S @@ -0,0 +1,263 @@ +/* + * linux/arch/m68knommu/platform/68328/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + */ + +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/thread_info.h> +#include <asm/unistd.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/traps.h> +#include <asm/asm-offsets.h> +#include <asm/entry.h> + +.text + +.globl system_call +.globl resume +.globl ret_from_exception +.globl ret_from_signal +.globl sys_call_table +.globl ret_from_interrupt +.globl bad_interrupt +.globl inthandler1 +.globl inthandler2 +.globl inthandler3 +.globl inthandler4 +.globl inthandler5 +.globl inthandler6 +.globl inthandler7 + +badsys: + movel #-ENOSYS,%sp@(PT_OFF_D0) + jra ret_from_exception + +do_trace: + movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/ + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace_enter + RESTORE_SWITCH_STACK + addql #4,%sp + movel %sp@(PT_OFF_ORIG_D0),%d1 + movel #-ENOSYS,%d0 + cmpl #NR_syscalls,%d1 + jcc 1f + lsl #2,%d1 + lea sys_call_table, %a0 + jbsr %a0@(%d1) + +1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */ + subql #4,%sp /* dummy return address */ + SAVE_SWITCH_STACK + jbsr syscall_trace_leave + +ret_from_signal: + RESTORE_SWITCH_STACK + addql #4,%sp + jra ret_from_exception + +ENTRY(system_call) + SAVE_ALL + + /* save top of frame*/ + pea %sp@ + jbsr set_esp0 + addql #4,%sp + + movel %sp@(PT_OFF_ORIG_D0),%d0 + + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 + movel %d1,%a2 + btst #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8) + jne do_trace + cmpl #NR_syscalls,%d0 + jcc badsys + lsl #2,%d0 + lea sys_call_table,%a0 + movel %a0@(%d0), %a0 + jbsr %a0@ + movel %d0,%sp@(PT_OFF_D0) /* save the return value*/ + +ret_from_exception: + btst #5,%sp@(PT_OFF_SR) /* check if returning to kernel*/ + jeq Luser_return /* if so, skip resched, signals*/ + +Lkernel_return: + RESTORE_ALL + +Luser_return: + /* only allow interrupts when we are really the last one on the*/ + /* kernel stack, otherwise stack overflow can occur during*/ + /* heavy interrupt load*/ + andw #ALLOWINT,%sr + + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 + movel %d1,%a2 +1: + move %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + jne Lwork_to_do + RESTORE_ALL + +Lwork_to_do: + movel %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + btst #TIF_NEED_RESCHED,%d1 + jne reschedule + +Lsignal_return: + subql #4,%sp /* dummy return address*/ + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + bsrw do_signal + addql #4,%sp + RESTORE_SWITCH_STACK + addql #4,%sp + jra 1b + +/* + * This is the main interrupt handler, responsible for calling process_int() + */ +inthandler1: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #65,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler2: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #66,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler3: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #67,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler4: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #68,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler5: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #69,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler6: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #70,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler7: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel #71,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +inthandler: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and #0x3ff, %d0 + + movel %sp,%sp@- + movel %d0,%sp@- /* put vector # on stack*/ + jbsr process_int /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +ret_from_interrupt: + jeq 1f +2: + RESTORE_ALL +1: + moveb %sp@(PT_OFF_SR), %d0 + and #7, %d0 + jhi 2b + + /* check if we need to do software interrupts */ + jeq ret_from_exception + + pea ret_from_exception + jra do_softirq + + +/* + * Handler for uninitialized and spurious interrupts. + */ +ENTRY(bad_interrupt) + addql #1,num_spurious + rte + +/* + * Beware - when entering resume, prev (the current task) is + * in a0, next (the new task) is in a1,so don't change these + * registers until their contents are no longer needed. + */ +ENTRY(resume) + movel %a0,%d1 /* save prev thread in d1 */ + movew %sr,%a0@(TASK_THREAD+THREAD_SR) /* save sr */ + movel %usp,%a2 /* save usp */ + movel %a2,%a0@(TASK_THREAD+THREAD_USP) + + SAVE_SWITCH_STACK + movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack */ + movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new thread stack */ + RESTORE_SWITCH_STACK + + movel %a1@(TASK_THREAD+THREAD_USP),%a0 /* restore user stack */ + movel %a0,%usp + movew %a1@(TASK_THREAD+THREAD_SR),%sr /* restore thread status reg */ + rts + diff --git a/arch/m68k/platform/68328/head-de2.S b/arch/m68k/platform/68328/head-de2.S new file mode 100644 index 0000000..f632fdc --- /dev/null +++ b/arch/m68k/platform/68328/head-de2.S @@ -0,0 +1,128 @@ + +#define MEM_END 0x00800000 /* Memory size 8Mb */ + +#undef CRT_DEBUG + +.macro PUTC CHAR +#ifdef CRT_DEBUG + moveq #\CHAR, %d7 + jsr putc +#endif +.endm + + .global _start + .global _rambase + .global _ramvec + .global _ramstart + .global _ramend + + .data + +/* + * Set up the usable of RAM stuff + */ +_rambase: + .long 0 +_ramvec: + .long 0 +_ramstart: + .long 0 +_ramend: + .long 0 + + .text + +_start: + +/* + * Setup initial stack + */ + /* disable all interrupts */ + movew #0x2700, %sr + movel #-1, 0xfffff304 + movel #MEM_END-4, %sp + + PUTC '\r' + PUTC '\n' + PUTC 'A' + PUTC 'B' + +/* + * Determine end of RAM + */ + + movel #MEM_END, %a0 + movel %a0, _ramend + + PUTC 'C' + +/* + * Move ROM filesystem above bss :-) + */ + + moveal #_sbss, %a0 /* romfs at the start of bss */ + moveal #_ebss, %a1 /* Set up destination */ + movel %a0, %a2 /* Copy of bss start */ + + movel 8(%a0), %d1 /* Get size of ROMFS */ + addql #8, %d1 /* Allow for rounding */ + andl #0xfffffffc, %d1 /* Whole words */ + + addl %d1, %a0 /* Copy from end */ + addl %d1, %a1 /* Copy from end */ + movel %a1, _ramstart /* Set start of ram */ + +1: + movel -(%a0), %d0 /* Copy dword */ + movel %d0, -(%a1) + cmpl %a0, %a2 /* Check if at end */ + bne 1b + + PUTC 'D' + +/* + * Initialize BSS segment to 0 + */ + + lea _sbss, %a0 + lea _ebss, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +2: cmpal %a0, %a1 + beq 1f + clrl (%a0)+ + bra 2b +1: + + PUTC 'E' + +/* + * Load the current task pointer and stack + */ + + lea init_thread_union, %a0 + lea 0x2000(%a0), %sp + + PUTC 'F' + PUTC '\r' + PUTC '\n' + +/* + * Go + */ + + jmp start_kernel + +/* + * Local functions + */ + +#ifdef CRT_DEBUG +putc: + moveb %d7, 0xfffff907 +1: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq 1b + rts +#endif diff --git a/arch/m68k/platform/68328/head-pilot.S b/arch/m68k/platform/68328/head-pilot.S new file mode 100644 index 0000000..aecff53 --- /dev/null +++ b/arch/m68k/platform/68328/head-pilot.S @@ -0,0 +1,222 @@ +/* + * linux/arch/m68knommu/platform/68328/head-pilot.S + * - A startup file for the MC68328 + * + * Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * The Silver Hammer Group, Ltd. + * + * (c) 1995, Dionne & Associates + * (c) 1995, DKG Display Tech. + */ + +#define ASSEMBLY + +#define IMMED # +#define DBG_PUTC(x) moveb IMMED x, 0xfffff907 + + +.global _stext +.global _start + +.global _rambase +.global _ramvec +.global _ramstart +.global _ramend + +.global penguin_bits + +#ifdef CONFIG_PILOT + +#define IMR 0xFFFFF304 + + .data + .align 16 + +penguin_bits: +#include "bootlogo.rh" + +#endif + +/*****************************************************************************/ + +.data + +/* + * Set up the usable of RAM stuff. Size of RAM is determined then + * an initial stack set up at the end. + */ +.align 4 +_ramvec: +.long 0 +_rambase: +.long 0 +_ramstart: +.long 0 +_ramend: +.long 0 + +.text + +_start: +_stext: + + +#ifdef CONFIG_M68328 + +#ifdef CONFIG_PILOT + .byte 0x4e, 0xfa, 0x00, 0x0a /* Jmp +X bytes */ + .byte 'b', 'o', 'o', 't' + .word 10000 + + nop +#endif + + moveq #0, %d0 + movew %d0, 0xfffff618 /* Watchdog off */ + movel #0x00011f07, 0xfffff114 /* CS A1 Mask */ + + movew #0x0800, 0xfffff906 /* Ignore CTS */ + movew #0x010b, 0xfffff902 /* BAUD to 9600 */ + + movew #0x2410, 0xfffff200 /* PLLCR */ + movew #0x123, 0xfffff202 /* PLLFSR */ + +#ifdef CONFIG_PILOT + moveb #0, 0xfffffA27 /* LCKCON */ + movel #_start, 0xfffffA00 /* LSSA */ + moveb #0xa, 0xfffffA05 /* LVPW */ + movew #0x9f, 0xFFFFFa08 /* LXMAX */ + movew #0x9f, 0xFFFFFa0a /* LYMAX */ + moveb #9, 0xfffffa29 /* LBAR */ + moveb #0, 0xfffffa25 /* LPXCD */ + moveb #0x04, 0xFFFFFa20 /* LPICF */ + moveb #0x58, 0xfffffA27 /* LCKCON */ + moveb #0x85, 0xfffff429 /* PFDATA */ + moveb #0xd8, 0xfffffA27 /* LCKCON */ + moveb #0xc5, 0xfffff429 /* PFDATA */ + moveb #0xd5, 0xfffff429 /* PFDATA */ + + moveal #0x00100000, %a3 + moveal #0x100ffc00, %a4 +#endif /* CONFIG_PILOT */ + +#endif /* CONFIG_M68328 */ + + movew #0x2700, %sr + lea %a4@(-4), %sp + + DBG_PUTC('\r') + DBG_PUTC('\n') + DBG_PUTC('A') + + moveq #0,%d0 + movew #16384, %d0 /* PLL settle wait loop */ +L0: + subw #1, %d0 + bne L0 + + DBG_PUTC('B') + + /* Copy command line from beginning of RAM (+16) to end of bss */ + movel #CONFIG_VECTORBASE, %d7 + addl #16, %d7 + moveal %d7, %a0 + moveal #_ebss, %a1 + lea %a1@(512), %a2 + + DBG_PUTC('C') + + /* Copy %a0 to %a1 until %a1 == %a2 */ +L2: + movel %a0@+, %d0 + movel %d0, %a1@+ + cmpal %a1, %a2 + bhi L2 + + /* Copy data+init segment from ROM to RAM */ + moveal #_etext, %a0 + moveal #_sdata, %a1 + moveal #__init_end, %a2 + + DBG_PUTC('D') + + /* Copy %a0 to %a1 until %a1 == %a2 */ +LD1: + movel %a0@+, %d0 + movel %d0, %a1@+ + cmpal %a1, %a2 + bhi LD1 + + DBG_PUTC('E') + + moveal #_sbss, %a0 + moveal #_ebss, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +L1: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi L1 + + DBG_PUTC('F') + + /* Copy command line from end of bss to command line */ + moveal #_ebss, %a0 + moveal #command_line, %a1 + lea %a1@(512), %a2 + + DBG_PUTC('G') + + /* Copy %a0 to %a1 until %a1 == %a2 */ +L3: + movel %a0@+, %d0 + movel %d0, %a1@+ + cmpal %a1, %a2 + bhi L3 + + movel #_sdata, %d0 + movel %d0, _rambase + movel #_ebss, %d0 + movel %d0, _ramstart + + movel %a4, %d0 + subl #4096, %d0 /* Reserve 4K of stack */ + moveq #79, %d7 + movel %d0, _ramend + + movel %a3, %d0 + movel %d0, rom_length + + pea 0 + pea env + pea %sp@(4) + pea 0 + + DBG_PUTC('H') + +#ifdef CONFIG_PILOT + movel #penguin_bits, 0xFFFFFA00 + moveb #10, 0xFFFFFA05 + movew #160, 0xFFFFFA08 + movew #160, 0xFFFFFA0A +#endif /* CONFIG_PILOT */ + + DBG_PUTC('I') + + lea init_thread_union, %a0 + lea 0x2000(%a0), %sp + + DBG_PUTC('J') + DBG_PUTC('\r') + DBG_PUTC('\n') + + jsr start_kernel +_exit: + + jmp _exit + + + .data +env: + .long 0 diff --git a/arch/m68k/platform/68328/head-ram.S b/arch/m68k/platform/68328/head-ram.S new file mode 100644 index 0000000..7f1aeea --- /dev/null +++ b/arch/m68k/platform/68328/head-ram.S @@ -0,0 +1,141 @@ + + .global __main + .global __rom_start + + .global _rambase + .global _ramstart + + .global splash_bits + .global _start + .global _stext + .global _edata + +#define DEBUG +#define ROM_OFFSET 0x10C00000 +#define STACK_GAURD 0x10 + + .text + +_start: +_stext: + movew #0x2700, %sr /* Exceptions off! */ + +#if 0 + /* Init chip registers. uCsimm specific */ + moveb #0x00, 0xfffffb0b /* Watchdog off */ + moveb #0x10, 0xfffff000 /* SCR */ + + movew #0x2400, 0xfffff200 /* PLLCR */ + movew #0x0123, 0xfffff202 /* PLLFSR */ + + moveb #0x00, 0xfffff40b /* enable chip select */ + moveb #0x00, 0xfffff423 /* enable /DWE */ + moveb #0x08, 0xfffffd0d /* disable hardmap */ + moveb #0x07, 0xfffffd0e /* level 7 interrupt clear */ + + movew #0x8600, 0xfffff100 /* FLASH at 0x10c00000 */ + movew #0x018b, 0xfffff110 /* 2Meg, enable, 0ws */ + + movew #0x8f00, 0xfffffc00 /* DRAM configuration */ + movew #0x9667, 0xfffffc02 /* DRAM control */ + movew #0x0000, 0xfffff106 /* DRAM at 0x00000000 */ + movew #0x068f, 0xfffff116 /* 8Meg, enable, 0ws */ + + moveb #0x40, 0xfffff300 /* IVR */ + movel #0x007FFFFF, %d0 /* IMR */ + movel %d0, 0xfffff304 + + moveb 0xfffff42b, %d0 + andb #0xe0, %d0 + moveb %d0, 0xfffff42b + + moveb #0x08, 0xfffff907 /* Ignore CTS */ + movew #0x010b, 0xfffff902 /* BAUD to 9600 */ + movew #0xe100, 0xfffff900 /* enable */ +#endif + + movew #16384, %d0 /* PLL settle wait loop */ +L0: + subw #1, %d0 + bne L0 +#ifdef DEBUG + moveq #70, %d7 /* 'F' */ + moveb %d7,0xfffff907 /* No absolute addresses */ +pclp1: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq pclp1 +#endif /* DEBUG */ + +#ifdef DEBUG + moveq #82, %d7 /* 'R' */ + moveb %d7,0xfffff907 /* No absolute addresses */ +pclp3: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq pclp3 +#endif /* DEBUG */ + moveal #0x007ffff0, %ssp + moveal #_sbss, %a0 + moveal #_ebss, %a1 + + /* Copy 0 to %a0 until %a0 >= %a1 */ +L1: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi L1 + +#ifdef DEBUG + moveq #67, %d7 /* 'C' */ + jsr putc +#endif /* DEBUG */ + + pea 0 + pea env + pea %sp@(4) + pea 0 + +#ifdef DEBUG + moveq #70, %d7 /* 'F' */ + jsr putc +#endif /* DEBUG */ + +lp: + jsr start_kernel + jmp lp +_exit: + + jmp _exit + +__main: + /* nothing */ + rts + +#ifdef DEBUG +putc: + moveb %d7,0xfffff907 +pclp: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq pclp + rts +#endif /* DEBUG */ + + .data + +/* + * Set up the usable of RAM stuff. Size of RAM is determined then + * an initial stack set up at the end. + */ +.align 4 +_ramvec: +.long 0 +_rambase: +.long 0 +_ramstart: +.long 0 +_ramend: +.long 0 + +env: + .long 0 diff --git a/arch/m68k/platform/68328/head-rom.S b/arch/m68k/platform/68328/head-rom.S new file mode 100644 index 0000000..6ec77d3 --- /dev/null +++ b/arch/m68k/platform/68328/head-rom.S @@ -0,0 +1,110 @@ + + .global _start + .global _stext + + .global _rambase + .global _ramvec + .global _ramstart + .global _ramend + +#ifdef CONFIG_INIT_LCD + .global splash_bits +#endif + + .data + +/* + * Set up the usable of RAM stuff. Size of RAM is determined then + * an initial stack set up at the end. + */ +.align 4 +_ramvec: +.long 0 +_rambase: +.long 0 +_ramstart: +.long 0 +_ramend: +.long 0 + +#define RAMEND (CONFIG_RAMBASE + CONFIG_RAMSIZE) + +#ifdef CONFIG_INIT_LCD +splash_bits: +#include "bootlogo.rh" +#endif + + .text +_start: +_stext: movew #0x2700,%sr +#ifdef CONFIG_INIT_LCD + movel #splash_bits, 0xfffffA00 /* LSSA */ + moveb #0x28, 0xfffffA05 /* LVPW */ + movew #0x280, 0xFFFFFa08 /* LXMAX */ + movew #0x1df, 0xFFFFFa0a /* LYMAX */ + moveb #0, 0xfffffa29 /* LBAR */ + moveb #0, 0xfffffa25 /* LPXCD */ + moveb #0x08, 0xFFFFFa20 /* LPICF */ + moveb #0x01, 0xFFFFFA21 /* -ve pol */ + moveb #0x81, 0xfffffA27 /* LCKCON */ + movew #0xff00, 0xfffff412 /* LCD pins */ +#endif + moveal #RAMEND-CONFIG_MEMORY_RESERVE*0x100000 - 0x10, %sp + movew #32767, %d0 /* PLL settle wait loop */ +1: subq #1, %d0 + bne 1b + + /* Copy data segment from ROM to RAM */ + moveal #_etext, %a0 + moveal #_sdata, %a1 + moveal #_edata, %a2 + + /* Copy %a0 to %a1 until %a1 == %a2 */ +1: movel %a0@+, %a1@+ + cmpal %a1, %a2 + bhi 1b + + moveal #_sbss, %a0 + moveal #_ebss, %a1 + /* Copy 0 to %a0 until %a0 == %a1 */ + +1: + clrl %a0@+ + cmpal %a0, %a1 + bhi 1b + + movel #_sdata, %d0 + movel %d0, _rambase + movel #_ebss, %d0 + movel %d0, _ramstart + movel #RAMEND-CONFIG_MEMORY_RESERVE*0x100000, %d0 + movel %d0, _ramend + movel #CONFIG_VECTORBASE, %d0 + movel %d0, _ramvec + +/* + * load the current task pointer and stack + */ + lea init_thread_union, %a0 + lea 0x2000(%a0), %sp + +1: jsr start_kernel + bra 1b +_exit: + + jmp _exit + + +putc: + moveb %d7,0xfffff907 +1: + movew 0xfffff906, %d7 + andw #0x2000, %d7 + beq 1b + rts + + .data +env: + .long 0 + .text + diff --git a/arch/m68k/platform/68328/ints.c b/arch/m68k/platform/68328/ints.c new file mode 100644 index 0000000..e563183 --- /dev/null +++ b/arch/m68k/platform/68328/ints.c @@ -0,0 +1,186 @@ +/* + * linux/arch/m68knommu/platform/68328/ints.c + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Copyright 1996 Roman Zippel + * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com> + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <asm/traps.h> +#include <asm/io.h> +#include <asm/machdep.h> + +#if defined(CONFIG_M68328) +#include <asm/MC68328.h> +#elif defined(CONFIG_M68EZ328) +#include <asm/MC68EZ328.h> +#elif defined(CONFIG_M68VZ328) +#include <asm/MC68VZ328.h> +#endif + +/* assembler routines */ +asmlinkage void system_call(void); +asmlinkage void buserr(void); +asmlinkage void trap(void); +asmlinkage void trap3(void); +asmlinkage void trap4(void); +asmlinkage void trap5(void); +asmlinkage void trap6(void); +asmlinkage void trap7(void); +asmlinkage void trap8(void); +asmlinkage void trap9(void); +asmlinkage void trap10(void); +asmlinkage void trap11(void); +asmlinkage void trap12(void); +asmlinkage void trap13(void); +asmlinkage void trap14(void); +asmlinkage void trap15(void); +asmlinkage void trap33(void); +asmlinkage void trap34(void); +asmlinkage void trap35(void); +asmlinkage void trap36(void); +asmlinkage void trap37(void); +asmlinkage void trap38(void); +asmlinkage void trap39(void); +asmlinkage void trap40(void); +asmlinkage void trap41(void); +asmlinkage void trap42(void); +asmlinkage void trap43(void); +asmlinkage void trap44(void); +asmlinkage void trap45(void); +asmlinkage void trap46(void); +asmlinkage void trap47(void); +asmlinkage irqreturn_t bad_interrupt(int, void *); +asmlinkage irqreturn_t inthandler(void); +asmlinkage irqreturn_t inthandler1(void); +asmlinkage irqreturn_t inthandler2(void); +asmlinkage irqreturn_t inthandler3(void); +asmlinkage irqreturn_t inthandler4(void); +asmlinkage irqreturn_t inthandler5(void); +asmlinkage irqreturn_t inthandler6(void); +asmlinkage irqreturn_t inthandler7(void); + +extern e_vector *_ramvec; + +/* The number of spurious interrupts */ +volatile unsigned int num_spurious; + +/* The 68k family did not have a good way to determine the source + * of interrupts until later in the family. The EC000 core does + * not provide the vector number on the stack, we vector everything + * into one vector and look in the blasted mask register... + * This code is designed to be fast, almost constant time, not clean! + */ +void process_int(int vec, struct pt_regs *fp) +{ + int irq; + int mask; + + unsigned long pend = ISR; + + while (pend) { + if (pend & 0x0000ffff) { + if (pend & 0x000000ff) { + if (pend & 0x0000000f) { + mask = 0x00000001; + irq = 0; + } else { + mask = 0x00000010; + irq = 4; + } + } else { + if (pend & 0x00000f00) { + mask = 0x00000100; + irq = 8; + } else { + mask = 0x00001000; + irq = 12; + } + } + } else { + if (pend & 0x00ff0000) { + if (pend & 0x000f0000) { + mask = 0x00010000; + irq = 16; + } else { + mask = 0x00100000; + irq = 20; + } + } else { + if (pend & 0x0f000000) { + mask = 0x01000000; + irq = 24; + } else { + mask = 0x10000000; + irq = 28; + } + } + } + + while (! (mask & pend)) { + mask <<=1; + irq++; + } + + do_IRQ(irq, fp); + pend &= ~mask; + } +} + +static void intc_irq_unmask(struct irq_data *d) +{ + IMR &= ~(1 << d->irq); +} + +static void intc_irq_mask(struct irq_data *d) +{ + IMR |= (1 << d->irq); +} + +static struct irq_chip intc_irq_chip = { + .name = "M68K-INTC", + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, +}; + +/* + * This function should be called during kernel startup to initialize + * the machine vector table. + */ +void __init init_IRQ(void) +{ + int i; + + /* set up the vectors */ + for (i = 72; i < 256; ++i) + _ramvec[i] = (e_vector) bad_interrupt; + + _ramvec[32] = system_call; + + _ramvec[65] = (e_vector) inthandler1; + _ramvec[66] = (e_vector) inthandler2; + _ramvec[67] = (e_vector) inthandler3; + _ramvec[68] = (e_vector) inthandler4; + _ramvec[69] = (e_vector) inthandler5; + _ramvec[70] = (e_vector) inthandler6; + _ramvec[71] = (e_vector) inthandler7; + + IVR = 0x40; /* Set DragonBall IVR (interrupt base) to 64 */ + + /* turn off all interrupts */ + IMR = ~0; + + for (i = 0; (i < NR_IRQS); i++) { + set_irq_chip(i, &intc_irq_chip); + set_irq_handler(i, handle_level_irq); + } +} + diff --git a/arch/m68k/platform/68328/romvec.S b/arch/m68k/platform/68328/romvec.S new file mode 100644 index 0000000..3108446 --- /dev/null +++ b/arch/m68k/platform/68328/romvec.S @@ -0,0 +1,35 @@ +/* + * linux/arch/m68knommu/platform/68328/romvec.S + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Copyright 1996 Roman Zippel + * Copyright 1999 D. Jeff Dionne <jeff@rt-control.com> + * Copyright 2006 Greg Ungerer <gerg@snapgear.com> + */ + +.global _start +.global _buserr +.global trap +.global system_call + +.section .romvec + +e_vectors: +.long CONFIG_RAMBASE+CONFIG_RAMSIZE-4, _start, buserr, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +/* TRAP #0-15 */ +.long system_call, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long trap, trap, trap, trap +.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 + diff --git a/arch/m68k/platform/68328/timers.c b/arch/m68k/platform/68328/timers.c new file mode 100644 index 0000000..309f7259 --- /dev/null +++ b/arch/m68k/platform/68328/timers.c @@ -0,0 +1,134 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/68328/timers.c + * + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne + * Copyright (C) 2001 Georges Menie, Ken Desmet + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/***************************************************************************/ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/clocksource.h> +#include <asm/setup.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/machdep.h> +#include <asm/MC68VZ328.h> + +/***************************************************************************/ + +#if defined(CONFIG_DRAGEN2) +/* with a 33.16 MHz clock, this will give usec resolution to the time functions */ +#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK +#define CLOCK_PRE 7 +#define TICKS_PER_JIFFY 41450 + +#elif defined(CONFIG_XCOPILOT_BUGS) +/* + * The only thing I know is that CLK32 is not available on Xcopilot + * I have little idea about what frequency SYSCLK has on Xcopilot. + * The values for prescaler and compare registers were simply + * taken from the original source + */ +#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK +#define CLOCK_PRE 2 +#define TICKS_PER_JIFFY 0xd7e4 + +#else +/* default to using the 32Khz clock */ +#define CLOCK_SOURCE TCTL_CLKSOURCE_32KHZ +#define CLOCK_PRE 31 +#define TICKS_PER_JIFFY 10 +#endif + +static u32 m68328_tick_cnt; + +/***************************************************************************/ + +static irqreturn_t hw_tick(int irq, void *dummy) +{ + /* Reset Timer1 */ + TSTAT &= 0; + + m68328_tick_cnt += TICKS_PER_JIFFY; + return arch_timer_interrupt(irq, dummy); +} + +/***************************************************************************/ + +static struct irqaction m68328_timer_irq = { + .name = "timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = hw_tick, +}; + +/***************************************************************************/ + +static cycle_t m68328_read_clk(struct clocksource *cs) +{ + unsigned long flags; + u32 cycles; + + local_irq_save(flags); + cycles = m68328_tick_cnt + TCN; + local_irq_restore(flags); + + return cycles; +} + +/***************************************************************************/ + +static struct clocksource m68328_clk = { + .name = "timer", + .rating = 250, + .read = m68328_read_clk, + .shift = 20, + .mask = CLOCKSOURCE_MASK(32), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +/***************************************************************************/ + +void hw_timer_init(void) +{ + /* disable timer 1 */ + TCTL = 0; + + /* set ISR */ + setup_irq(TMR_IRQ_NUM, &m68328_timer_irq); + + /* Restart mode, Enable int, Set clock source */ + TCTL = TCTL_OM | TCTL_IRQEN | CLOCK_SOURCE; + TPRER = CLOCK_PRE; + TCMP = TICKS_PER_JIFFY; + + /* Enable timer 1 */ + TCTL |= TCTL_TEN; + m68328_clk.mult = clocksource_hz2mult(TICKS_PER_JIFFY*HZ, m68328_clk.shift); + clocksource_register(&m68328_clk); +} + +/***************************************************************************/ + +void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec) +{ + long now = RTCTIME; + + *year = *mon = *day = 1; + *hour = (now >> 24) % 24; + *min = (now >> 16) % 60; + *sec = now % 60; +} + +/***************************************************************************/ diff --git a/arch/m68k/platform/68360/Makefile b/arch/m68k/platform/68360/Makefile new file mode 100644 index 0000000..cf5af73 --- /dev/null +++ b/arch/m68k/platform/68360/Makefile @@ -0,0 +1,10 @@ +# +# Makefile for arch/m68knommu/platform/68360. +# + +obj-y := config.o commproc.o entry.o ints.o + +extra-y := head.o + +$(obj)/head.o: $(obj)/head-$(MODEL).o + ln -sf head-$(MODEL).o $(obj)/head.o diff --git a/arch/m68k/platform/68360/commproc.c b/arch/m68k/platform/68360/commproc.c new file mode 100644 index 0000000..8e4e10c --- /dev/null +++ b/arch/m68k/platform/68360/commproc.c @@ -0,0 +1,308 @@ +/* + * General Purpose functions for the global management of the + * Communication Processor Module. + * + * Copyright (c) 2000 Michael Leslie <mleslie@lineo.com> + * Copyright (c) 1997 Dan Malek (dmalek@jlc.net) + * + * In addition to the individual control of the communication + * channels, there are a few functions that globally affect the + * communication processor. + * + * Buffer descriptors must be allocated from the dual ported memory + * space. The allocator for that is here. When the communication + * process is reset, we reclaim the memory available. There is + * currently no deallocator for this memory. + * The amount of space available is platform dependent. On the + * MBX, the EPPC software loads additional microcode into the + * communication processor, and uses some of the DP ram for this + * purpose. Current, the first 512 bytes and the last 256 bytes of + * memory are used. Right now I am conservative and only use the + * memory that can never be used for microcode. If there are + * applications that require more DP ram, we can expand the boundaries + * but then we have to be careful of any downloaded microcode. + * + */ + +/* + * Michael Leslie <mleslie@lineo.com> + * adapted Dan Malek's ppc8xx drivers to M68360 + * + */ + +#include <linux/errno.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <asm/irq.h> +#include <asm/m68360.h> +#include <asm/commproc.h> + +/* #include <asm/page.h> */ +/* #include <asm/pgtable.h> */ +extern void *_quicc_base; +extern unsigned int system_clock; + + +static uint dp_alloc_base; /* Starting offset in DP ram */ +static uint dp_alloc_top; /* Max offset + 1 */ + +#if 0 +static void *host_buffer; /* One page of host buffer */ +static void *host_end; /* end + 1 */ +#endif + +/* struct cpm360_t *cpmp; */ /* Pointer to comm processor space */ + +QUICC *pquicc; +/* QUICC *quicc_dpram; */ /* mleslie - temporary; use extern pquicc elsewhere instead */ + + +/* CPM interrupt vector functions. */ +struct cpm_action { + void (*handler)(void *); + void *dev_id; +}; +static struct cpm_action cpm_vecs[CPMVEC_NR]; +static void cpm_interrupt(int irq, void * dev, struct pt_regs * regs); +static void cpm_error_interrupt(void *); + +/* prototypes: */ +void cpm_install_handler(int vec, void (*handler)(), void *dev_id); +void m360_cpm_reset(void); + + + + +void m360_cpm_reset() +{ +/* pte_t *pte; */ + + pquicc = (struct quicc *)(_quicc_base); /* initialized in crt0_rXm.S */ + + /* Perform a CPM reset. */ + pquicc->cp_cr = (SOFTWARE_RESET | CMD_FLAG); + + /* Wait for CPM to become ready (should be 2 clocks). */ + while (pquicc->cp_cr & CMD_FLAG); + + /* On the recommendation of the 68360 manual, p. 7-60 + * - Set sdma interrupt service mask to 7 + * - Set sdma arbitration ID to 4 + */ + pquicc->sdma_sdcr = 0x0740; + + + /* Claim the DP memory for our use. + */ + dp_alloc_base = CPM_DATAONLY_BASE; + dp_alloc_top = dp_alloc_base + CPM_DATAONLY_SIZE; + + + /* Set the host page for allocation. + */ + /* host_buffer = host_page_addr; */ + /* host_end = host_page_addr + PAGE_SIZE; */ + + /* pte = find_pte(&init_mm, host_page_addr); */ + /* pte_val(*pte) |= _PAGE_NO_CACHE; */ + /* flush_tlb_page(current->mm->mmap, host_buffer); */ + + /* Tell everyone where the comm processor resides. + */ +/* cpmp = (cpm360_t *)commproc; */ +} + + +/* This is called during init_IRQ. We used to do it above, but this + * was too early since init_IRQ was not yet called. + */ +void +cpm_interrupt_init(void) +{ + /* Initialize the CPM interrupt controller. + * NOTE THAT pquicc had better have been initialized! + * reference: MC68360UM p. 7-377 + */ + pquicc->intr_cicr = + (CICR_SCD_SCC4 | CICR_SCC_SCC3 | CICR_SCB_SCC2 | CICR_SCA_SCC1) | + (CPM_INTERRUPT << 13) | + CICR_HP_MASK | + (CPM_VECTOR_BASE << 5) | + CICR_SPS; + + /* mask all CPM interrupts from reaching the cpu32 core: */ + pquicc->intr_cimr = 0; + + + /* mles - If I understand correctly, the 360 just pops over to the CPM + * specific vector, obviating the necessity to vector through the IRQ + * whose priority the CPM is set to. This needs a closer look, though. + */ + + /* Set our interrupt handler with the core CPU. */ +/* if (request_irq(CPM_INTERRUPT, cpm_interrupt, 0, "cpm", NULL) != 0) */ +/* panic("Could not allocate CPM IRQ!"); */ + + /* Install our own error handler. + */ + /* I think we want to hold off on this one for the moment - mles */ + /* cpm_install_handler(CPMVEC_ERROR, cpm_error_interrupt, NULL); */ + + /* master CPM interrupt enable */ + /* pquicc->intr_cicr |= CICR_IEN; */ /* no such animal for 360 */ +} + + + +/* CPM interrupt controller interrupt. +*/ +static void +cpm_interrupt(int irq, void * dev, struct pt_regs * regs) +{ + /* uint vec; */ + + /* mles: Note that this stuff is currently being performed by + * M68360_do_irq(int vec, struct pt_regs *fp), in ../ints.c */ + + /* figure out the vector */ + /* call that vector's handler */ + /* clear the irq's bit in the service register */ + +#if 0 /* old 860 stuff: */ + /* Get the vector by setting the ACK bit and then reading + * the register. + */ + ((volatile immap_t *)IMAP_ADDR)->im_cpic.cpic_civr = 1; + vec = ((volatile immap_t *)IMAP_ADDR)->im_cpic.cpic_civr; + vec >>= 11; + + + if (cpm_vecs[vec].handler != 0) + (*cpm_vecs[vec].handler)(cpm_vecs[vec].dev_id); + else + ((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr &= ~(1 << vec); + + /* After servicing the interrupt, we have to remove the status + * indicator. + */ + ((immap_t *)IMAP_ADDR)->im_cpic.cpic_cisr |= (1 << vec); +#endif + +} + +/* The CPM can generate the error interrupt when there is a race condition + * between generating and masking interrupts. All we have to do is ACK it + * and return. This is a no-op function so we don't need any special + * tests in the interrupt handler. + */ +static void +cpm_error_interrupt(void *dev) +{ +} + +/* Install a CPM interrupt handler. +*/ +void +cpm_install_handler(int vec, void (*handler)(), void *dev_id) +{ + + request_irq(vec, handler, 0, "timer", dev_id); + +/* if (cpm_vecs[vec].handler != 0) */ +/* printk(KERN_INFO "CPM interrupt %x replacing %x\n", */ +/* (uint)handler, (uint)cpm_vecs[vec].handler); */ +/* cpm_vecs[vec].handler = handler; */ +/* cpm_vecs[vec].dev_id = dev_id; */ + + /* ((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr |= (1 << vec); */ +/* pquicc->intr_cimr |= (1 << vec); */ + +} + +/* Free a CPM interrupt handler. +*/ +void +cpm_free_handler(int vec) +{ + cpm_vecs[vec].handler = NULL; + cpm_vecs[vec].dev_id = NULL; + /* ((immap_t *)IMAP_ADDR)->im_cpic.cpic_cimr &= ~(1 << vec); */ + pquicc->intr_cimr &= ~(1 << vec); +} + + + + +/* Allocate some memory from the dual ported ram. We may want to + * enforce alignment restrictions, but right now everyone is a good + * citizen. + */ +uint +m360_cpm_dpalloc(uint size) +{ + uint retloc; + + if ((dp_alloc_base + size) >= dp_alloc_top) + return(CPM_DP_NOSPACE); + + retloc = dp_alloc_base; + dp_alloc_base += size; + + return(retloc); +} + + +#if 0 /* mleslie - for now these are simply kmalloc'd */ +/* We also own one page of host buffer space for the allocation of + * UART "fifos" and the like. + */ +uint +m360_cpm_hostalloc(uint size) +{ + uint retloc; + + if ((host_buffer + size) >= host_end) + return(0); + + retloc = host_buffer; + host_buffer += size; + + return(retloc); +} +#endif + + +/* Set a baud rate generator. This needs lots of work. There are + * four BRGs, any of which can be wired to any channel. + * The internal baud rate clock is the system clock divided by 16. + * This assumes the baudrate is 16x oversampled by the uart. + */ +/* #define BRG_INT_CLK (((bd_t *)__res)->bi_intfreq * 1000000) */ +#define BRG_INT_CLK system_clock +#define BRG_UART_CLK (BRG_INT_CLK/16) + +void +m360_cpm_setbrg(uint brg, uint rate) +{ + volatile uint *bp; + + /* This is good enough to get SMCs running..... + */ + /* bp = (uint *)&cpmp->cp_brgc1; */ + bp = (volatile uint *)(&pquicc->brgc[0].l); + bp += brg; + *bp = ((BRG_UART_CLK / rate - 1) << 1) | CPM_BRG_EN; +} + + +/* + * Local variables: + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/arch/m68k/platform/68360/config.c b/arch/m68k/platform/68360/config.c new file mode 100644 index 0000000..9dd5bca --- /dev/null +++ b/arch/m68k/platform/68360/config.c @@ -0,0 +1,186 @@ +/* + * linux/arch/m68knommu/platform/68360/config.c + * + * Copyright (c) 2000 Michael Leslie <mleslie@lineo.com> + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne <jeff@uclinux.org> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <stdarg.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/irq.h> + +#include <asm/setup.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/machdep.h> +#include <asm/m68360.h> + +#ifdef CONFIG_UCQUICC +#include <asm/bootstd.h> +#endif + +extern void m360_cpm_reset(void); + +// Mask to select if the PLL prescaler is enabled. +#define MCU_PREEN ((unsigned short)(0x0001 << 13)) + +#if defined(CONFIG_UCQUICC) +#define OSCILLATOR (unsigned long int)33000000 +#endif + +unsigned long int system_clock; + +extern QUICC *pquicc; + +/* TODO DON"T Hard Code this */ +/* calculate properly using the right PLL and prescaller */ +// unsigned int system_clock = 33000000l; +extern unsigned long int system_clock; //In kernel setup.c + + +static irqreturn_t hw_tick(int irq, void *dummy) +{ + /* Reset Timer1 */ + /* TSTAT &= 0; */ + + pquicc->timer_ter1 = 0x0002; /* clear timer event */ + + return arch_timer_interrupt(irq, dummy); +} + +static struct irqaction m68360_timer_irq = { + .name = "timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = hw_tick, +}; + +void hw_timer_init(void) +{ + unsigned char prescaler; + unsigned short tgcr_save; + +#if 0 + /* Restart mode, Enable int, 32KHz, Enable timer */ + TCTL = TCTL_OM | TCTL_IRQEN | TCTL_CLKSOURCE_32KHZ | TCTL_TEN; + /* Set prescaler (Divide 32KHz by 32)*/ + TPRER = 31; + /* Set compare register 32Khz / 32 / 10 = 100 */ + TCMP = 10; + + request_irq(IRQ_MACHSPEC | 1, timer_routine, 0, "timer", NULL); +#endif + + /* General purpose quicc timers: MC68360UM p7-20 */ + + /* Set up timer 1 (in [1..4]) to do 100Hz */ + tgcr_save = pquicc->timer_tgcr & 0xfff0; + pquicc->timer_tgcr = tgcr_save; /* stop and reset timer 1 */ + /* pquicc->timer_tgcr |= 0x4444; */ /* halt timers when FREEZE (ie bdm freeze) */ + + prescaler = 8; + pquicc->timer_tmr1 = 0x001a | /* or=1, frr=1, iclk=01b */ + (unsigned short)((prescaler - 1) << 8); + + pquicc->timer_tcn1 = 0x0000; /* initial count */ + /* calculate interval for 100Hz based on the _system_clock: */ + pquicc->timer_trr1 = (system_clock/ prescaler) / HZ; /* reference count */ + + pquicc->timer_ter1 = 0x0003; /* clear timer events */ + + /* enable timer 1 interrupt in CIMR */ + setup_irq(CPMVEC_TIMER1, &m68360_timer_irq); + + /* Start timer 1: */ + tgcr_save = (pquicc->timer_tgcr & 0xfff0) | 0x0001; + pquicc->timer_tgcr = tgcr_save; +} + +void BSP_gettod (int *yearp, int *monp, int *dayp, + int *hourp, int *minp, int *secp) +{ +} + +int BSP_set_clock_mmss(unsigned long nowtime) +{ +#if 0 + short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60; + + tod->second1 = real_seconds / 10; + tod->second2 = real_seconds % 10; + tod->minute1 = real_minutes / 10; + tod->minute2 = real_minutes % 10; +#endif + return 0; +} + +void BSP_reset (void) +{ + local_irq_disable(); + asm volatile ( + "moveal #_start, %a0;\n" + "moveb #0, 0xFFFFF300;\n" + "moveal 0(%a0), %sp;\n" + "moveal 4(%a0), %a0;\n" + "jmp (%a0);\n" + ); +} + +unsigned char *scc1_hwaddr; +static int errno; + +#if defined (CONFIG_UCQUICC) +_bsc0(char *, getserialnum) +_bsc1(unsigned char *, gethwaddr, int, a) +_bsc1(char *, getbenv, char *, a) +#endif + + +void config_BSP(char *command, int len) +{ + unsigned char *p; + + m360_cpm_reset(); + + /* Calculate the real system clock value. */ + { + unsigned int local_pllcr = (unsigned int)(pquicc->sim_pllcr); + if( local_pllcr & MCU_PREEN ) // If the prescaler is dividing by 128 + { + int mf = (int)(pquicc->sim_pllcr & 0x0fff); + system_clock = (OSCILLATOR / 128) * (mf + 1); + } + else + { + int mf = (int)(pquicc->sim_pllcr & 0x0fff); + system_clock = (OSCILLATOR) * (mf + 1); + } + } + + printk(KERN_INFO "\n68360 QUICC support (C) 2000 Lineo Inc.\n"); + +#if defined(CONFIG_UCQUICC) && 0 + printk(KERN_INFO "uCquicc serial string [%s]\n",getserialnum()); + p = scc1_hwaddr = gethwaddr(0); + printk(KERN_INFO "uCquicc hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n", + p[0], p[1], p[2], p[3], p[4], p[5]); + + p = getbenv("APPEND"); + if (p) + strcpy(p,command); + else + command[0] = 0; +#else + scc1_hwaddr = "\00\01\02\03\04\05"; +#endif + + mach_gettod = BSP_gettod; + mach_reset = BSP_reset; +} diff --git a/arch/m68k/platform/68360/entry.S b/arch/m68k/platform/68360/entry.S new file mode 100644 index 0000000..46c1b18 --- /dev/null +++ b/arch/m68k/platform/68360/entry.S @@ -0,0 +1,184 @@ +/* + * linux/arch/m68knommu/platform/68360/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * Copyright (C) 2001 SED Systems, a Division of Calian Ltd. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + * M68360 Port by SED Systems, and Lineo. + */ + +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/thread_info.h> +#include <asm/unistd.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/traps.h> +#include <asm/asm-offsets.h> +#include <asm/entry.h> + +.text + +.globl system_call +.globl resume +.globl ret_from_exception +.globl ret_from_signal +.globl sys_call_table +.globl ret_from_interrupt +.globl bad_interrupt +.globl inthandler + +badsys: + movel #-ENOSYS,%sp@(PT_OFF_D0) + jra ret_from_exception + +do_trace: + movel #-ENOSYS,%sp@(PT_OFF_D0) /* needed for strace*/ + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace_enter + RESTORE_SWITCH_STACK + addql #4,%sp + movel %sp@(PT_OFF_ORIG_D0),%d1 + movel #-ENOSYS,%d0 + cmpl #NR_syscalls,%d1 + jcc 1f + lsl #2,%d1 + lea sys_call_table, %a0 + jbsr %a0@(%d1) + +1: movel %d0,%sp@(PT_OFF_D0) /* save the return value */ + subql #4,%sp /* dummy return address */ + SAVE_SWITCH_STACK + jbsr syscall_trace_leave + +ret_from_signal: + RESTORE_SWITCH_STACK + addql #4,%sp + jra ret_from_exception + +ENTRY(system_call) + SAVE_ALL + + /* save top of frame*/ + pea %sp@ + jbsr set_esp0 + addql #4,%sp + + movel %sp@(PT_OFF_ORIG_D0),%d0 + + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 + movel %d1,%a2 + btst #(TIF_SYSCALL_TRACE%8),%a2@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8) + jne do_trace + cmpl #NR_syscalls,%d0 + jcc badsys + lsl #2,%d0 + lea sys_call_table,%a0 + movel %a0@(%d0), %a0 + jbsr %a0@ + movel %d0,%sp@(PT_OFF_D0) /* save the return value*/ + +ret_from_exception: + btst #5,%sp@(PT_OFF_SR) /* check if returning to kernel*/ + jeq Luser_return /* if so, skip resched, signals*/ + +Lkernel_return: + RESTORE_ALL + +Luser_return: + /* only allow interrupts when we are really the last one on the*/ + /* kernel stack, otherwise stack overflow can occur during*/ + /* heavy interrupt load*/ + andw #ALLOWINT,%sr + + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 + movel %d1,%a2 +1: + move %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + jne Lwork_to_do + RESTORE_ALL + +Lwork_to_do: + movel %a2@(TI_FLAGS),%d1 /* thread_info->flags */ + btst #TIF_NEED_RESCHED,%d1 + jne reschedule + +Lsignal_return: + subql #4,%sp /* dummy return address*/ + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + bsrw do_signal + addql #4,%sp + RESTORE_SWITCH_STACK + addql #4,%sp + jra 1b + +/* + * This is the main interrupt handler, responsible for calling do_IRQ() + */ +inthandler: + SAVE_ALL + movew %sp@(PT_OFF_FORMATVEC), %d0 + and.l #0x3ff, %d0 + lsr.l #0x02, %d0 + + movel %sp,%sp@- + movel %d0,%sp@- /* put vector # on stack*/ + jbsr do_IRQ /* process the IRQ*/ +3: addql #8,%sp /* pop parameters off stack*/ + bra ret_from_interrupt + +ret_from_interrupt: + jeq 1f +2: + RESTORE_ALL +1: + moveb %sp@(PT_OFF_SR), %d0 + and #7, %d0 + jhi 2b + /* check if we need to do software interrupts */ + + movel irq_stat+CPUSTAT_SOFTIRQ_PENDING,%d0 + jeq ret_from_exception + + pea ret_from_exception + jra do_softirq + + +/* + * Handler for uninitialized and spurious interrupts. + */ +bad_interrupt: + addql #1,num_spurious + rte + +/* + * Beware - when entering resume, prev (the current task) is + * in a0, next (the new task) is in a1,so don't change these + * registers until their contents are no longer needed. + */ +ENTRY(resume) + movel %a0,%d1 /* save prev thread in d1 */ + movew %sr,%a0@(TASK_THREAD+THREAD_SR) /* save sr */ + movel %usp,%a2 /* save usp */ + movel %a2,%a0@(TASK_THREAD+THREAD_USP) + + SAVE_SWITCH_STACK + movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack */ + movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new thread stack */ + RESTORE_SWITCH_STACK + + movel %a1@(TASK_THREAD+THREAD_USP),%a0 /* restore user stack */ + movel %a0,%usp + movew %a1@(TASK_THREAD+THREAD_SR),%sr /* restore thread status reg */ + rts + diff --git a/arch/m68k/platform/68360/head-ram.S b/arch/m68k/platform/68360/head-ram.S new file mode 100644 index 0000000..8eb94fb --- /dev/null +++ b/arch/m68k/platform/68360/head-ram.S @@ -0,0 +1,403 @@ +/* arch/m68knommu/platform/68360/head-ram.S + * + * Startup code for Motorola 68360 + * + * Copyright 2001 (C) SED Systems, a Division of Calian Ltd. + * Based on: arch/m68knommu/platform/68328/pilot/crt0_rom.S + * Based on: arch/m68knommu/platform/68360/uCquicc/crt0_rom.S, 2.0.38.1.pre7 + * uClinux Kernel + * Copyright (C) Michael Leslie <mleslie@lineo.com> + * Based on: arch/m68knommu/platform/68EZ328/ucsimm/crt0_rom.S + * Copyright (C) 1998 D. Jeff Dionne <jeff@uclinux.org>, + * + */ +#define ASSEMBLY + +.global _stext +.global _start + +.global _rambase +.global _ramvec +.global _ramstart +.global _ramend + +.global _quicc_base +.global _periph_base + +#define RAMEND (CONFIG_RAMBASE + CONFIG_RAMSIZE) +#define ROMEND (CONFIG_ROMBASE + CONFIG_ROMSIZE) + +#define REGB 0x1000 +#define PEPAR (_dprbase + REGB + 0x0016) +#define GMR (_dprbase + REGB + 0x0040) +#define OR0 (_dprbase + REGB + 0x0054) +#define BR0 (_dprbase + REGB + 0x0050) +#define OR1 (_dprbase + REGB + 0x0064) +#define BR1 (_dprbase + REGB + 0x0060) +#define OR4 (_dprbase + REGB + 0x0094) +#define BR4 (_dprbase + REGB + 0x0090) +#define OR6 (_dprbase + REGB + 0x00b4) +#define BR6 (_dprbase + REGB + 0x00b0) +#define OR7 (_dprbase + REGB + 0x00c4) +#define BR7 (_dprbase + REGB + 0x00c0) + +#define MCR (_dprbase + REGB + 0x0000) +#define AVR (_dprbase + REGB + 0x0008) + +#define SYPCR (_dprbase + REGB + 0x0022) + +#define PLLCR (_dprbase + REGB + 0x0010) +#define CLKOCR (_dprbase + REGB + 0x000C) +#define CDVCR (_dprbase + REGB + 0x0014) + +#define BKAR (_dprbase + REGB + 0x0030) +#define BKCR (_dprbase + REGB + 0x0034) +#define SWIV (_dprbase + REGB + 0x0023) +#define PICR (_dprbase + REGB + 0x0026) +#define PITR (_dprbase + REGB + 0x002A) + +/* Define for all memory configuration */ +#define MCU_SIM_GMR 0x00000000 +#define SIM_OR_MASK 0x0fffffff + +/* Defines for chip select zero - the flash */ +#define SIM_OR0_MASK 0x20000002 +#define SIM_BR0_MASK 0x00000001 + + +/* Defines for chip select one - the RAM */ +#define SIM_OR1_MASK 0x10000000 +#define SIM_BR1_MASK 0x00000001 + +#define MCU_SIM_MBAR_ADRS 0x0003ff00 +#define MCU_SIM_MBAR_BA_MASK 0xfffff000 +#define MCU_SIM_MBAR_AS_MASK 0x00000001 + +#define MCU_SIM_PEPAR 0x00B4 + +#define MCU_DISABLE_INTRPTS 0x2700 +#define MCU_SIM_AVR 0x00 + +#define MCU_SIM_MCR 0x00005cff + +#define MCU_SIM_CLKOCR 0x00 +#define MCU_SIM_PLLCR 0x8000 +#define MCU_SIM_CDVCR 0x0000 + +#define MCU_SIM_SYPCR 0x0000 +#define MCU_SIM_SWIV 0x00 +#define MCU_SIM_PICR 0x0000 +#define MCU_SIM_PITR 0x0000 + + +#include <asm/m68360_regs.h> + + +/* + * By the time this RAM specific code begins to execute, DPRAM + * and DRAM should already be mapped and accessible. + */ + + .text +_start: +_stext: + nop + ori.w #MCU_DISABLE_INTRPTS, %sr /* disable interrupts: */ + /* We should not need to setup the boot stack the reset should do it. */ + movea.l #RAMEND, %sp /*set up stack at the end of DRAM:*/ + +set_mbar_register: + moveq.l #0x07, %d1 /* Setup MBAR */ + movec %d1, %dfc + + lea.l MCU_SIM_MBAR_ADRS, %a0 + move.l #_dprbase, %d0 + andi.l #MCU_SIM_MBAR_BA_MASK, %d0 + ori.l #MCU_SIM_MBAR_AS_MASK, %d0 + moves.l %d0, %a0@ + + moveq.l #0x05, %d1 + movec.l %d1, %dfc + + /* Now we can begin to access registers in DPRAM */ + +set_sim_mcr: + /* Set Module Configuration Register */ + move.l #MCU_SIM_MCR, MCR + + /* to do: Determine cause of reset */ + + /* + * configure system clock MC68360 p. 6-40 + * (value +1)*osc/128 = system clock + */ +set_sim_clock: + move.w #MCU_SIM_PLLCR, PLLCR + move.b #MCU_SIM_CLKOCR, CLKOCR + move.w #MCU_SIM_CDVCR, CDVCR + + /* Wait for the PLL to settle */ + move.w #16384, %d0 +pll_settle_wait: + subi.w #1, %d0 + bne pll_settle_wait + + /* Setup the system protection register, and watchdog timer register */ + move.b #MCU_SIM_SWIV, SWIV + move.w #MCU_SIM_PICR, PICR + move.w #MCU_SIM_PITR, PITR + move.w #MCU_SIM_SYPCR, SYPCR + + /* Clear DPRAM - system + parameter */ + movea.l #_dprbase, %a0 + movea.l #_dprbase+0x2000, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +clear_dpram: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi clear_dpram + +configure_memory_controller: + /* Set up Global Memory Register (GMR) */ + move.l #MCU_SIM_GMR, %d0 + move.l %d0, GMR + +configure_chip_select_0: + move.l #RAMEND, %d0 + subi.l #__ramstart, %d0 + subq.l #0x01, %d0 + eori.l #SIM_OR_MASK, %d0 + ori.l #SIM_OR0_MASK, %d0 + move.l %d0, OR0 + + move.l #__ramstart, %d0 + ori.l #SIM_BR0_MASK, %d0 + move.l %d0, BR0 + +configure_chip_select_1: + move.l #ROMEND, %d0 + subi.l #__rom_start, %d0 + subq.l #0x01, %d0 + eori.l #SIM_OR_MASK, %d0 + ori.l #SIM_OR1_MASK, %d0 + move.l %d0, OR1 + + move.l #__rom_start, %d0 + ori.l #SIM_BR1_MASK, %d0 + move.l %d0, BR1 + + move.w #MCU_SIM_PEPAR, PEPAR + + /* point to vector table: */ + move.l #_romvec, %a0 + move.l #_ramvec, %a1 +copy_vectors: + move.l %a0@, %d0 + move.l %d0, %a1@ + move.l %a0@, %a1@ + addq.l #0x04, %a0 + addq.l #0x04, %a1 + cmp.l #_start, %a0 + blt copy_vectors + + move.l #_ramvec, %a1 + movec %a1, %vbr + + + /* Copy data segment from ROM to RAM */ + moveal #_stext, %a0 + moveal #_sdata, %a1 + moveal #_edata, %a2 + + /* Copy %a0 to %a1 until %a1 == %a2 */ +LD1: + move.l %a0@, %d0 + addq.l #0x04, %a0 + move.l %d0, %a1@ + addq.l #0x04, %a1 + cmp.l #_edata, %a1 + blt LD1 + + moveal #_sbss, %a0 + moveal #_ebss, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +L1: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi L1 + +load_quicc: + move.l #_dprbase, _quicc_base + +store_ram_size: + /* Set ram size information */ + move.l #_sdata, _rambase + move.l #_ebss, _ramstart + move.l #RAMEND, %d0 + sub.l #0x1000, %d0 /* Reserve 4K for stack space.*/ + move.l %d0, _ramend /* Different from RAMEND.*/ + + pea 0 + pea env + pea %sp@(4) + pea 0 + + lea init_thread_union, %a2 + lea 0x2000(%a2), %sp + +lp: + jsr start_kernel + +_exit: + jmp _exit + + + .data + .align 4 +env: + .long 0 +_quicc_base: + .long 0 +_periph_base: + .long 0 +_ramvec: + .long 0 +_rambase: + .long 0 +_ramstart: + .long 0 +_ramend: + .long 0 +_dprbase: + .long 0xffffe000 + + .text + + /* + * These are the exception vectors at boot up, they are copied into RAM + * and then overwritten as needed. + */ + +.section ".data..initvect","awx" + .long RAMEND /* Reset: Initial Stack Pointer - 0. */ + .long _start /* Reset: Initial Program Counter - 1. */ + .long buserr /* Bus Error - 2. */ + .long trap /* Address Error - 3. */ + .long trap /* Illegal Instruction - 4. */ + .long trap /* Divide by zero - 5. */ + .long trap /* CHK, CHK2 Instructions - 6. */ + .long trap /* TRAPcc, TRAPV Instructions - 7. */ + .long trap /* Privilege Violation - 8. */ + .long trap /* Trace - 9. */ + .long trap /* Line 1010 Emulator - 10. */ + .long trap /* Line 1111 Emualtor - 11. */ + .long trap /* Harware Breakpoint - 12. */ + .long trap /* (Reserved for Coprocessor Protocol Violation)- 13. */ + .long trap /* Format Error - 14. */ + .long trap /* Uninitialized Interrupt - 15. */ + .long trap /* (Unassigned, Reserver) - 16. */ + .long trap /* (Unassigned, Reserver) - 17. */ + .long trap /* (Unassigned, Reserver) - 18. */ + .long trap /* (Unassigned, Reserver) - 19. */ + .long trap /* (Unassigned, Reserver) - 20. */ + .long trap /* (Unassigned, Reserver) - 21. */ + .long trap /* (Unassigned, Reserver) - 22. */ + .long trap /* (Unassigned, Reserver) - 23. */ + .long trap /* Spurious Interrupt - 24. */ + .long trap /* Level 1 Interrupt Autovector - 25. */ + .long trap /* Level 2 Interrupt Autovector - 26. */ + .long trap /* Level 3 Interrupt Autovector - 27. */ + .long trap /* Level 4 Interrupt Autovector - 28. */ + .long trap /* Level 5 Interrupt Autovector - 29. */ + .long trap /* Level 6 Interrupt Autovector - 30. */ + .long trap /* Level 7 Interrupt Autovector - 31. */ + .long system_call /* Trap Instruction Vectors 0 - 32. */ + .long trap /* Trap Instruction Vectors 1 - 33. */ + .long trap /* Trap Instruction Vectors 2 - 34. */ + .long trap /* Trap Instruction Vectors 3 - 35. */ + .long trap /* Trap Instruction Vectors 4 - 36. */ + .long trap /* Trap Instruction Vectors 5 - 37. */ + .long trap /* Trap Instruction Vectors 6 - 38. */ + .long trap /* Trap Instruction Vectors 7 - 39. */ + .long trap /* Trap Instruction Vectors 8 - 40. */ + .long trap /* Trap Instruction Vectors 9 - 41. */ + .long trap /* Trap Instruction Vectors 10 - 42. */ + .long trap /* Trap Instruction Vectors 11 - 43. */ + .long trap /* Trap Instruction Vectors 12 - 44. */ + .long trap /* Trap Instruction Vectors 13 - 45. */ + .long trap /* Trap Instruction Vectors 14 - 46. */ + .long trap /* Trap Instruction Vectors 15 - 47. */ + .long 0 /* (Reserved for Coprocessor) - 48. */ + .long 0 /* (Reserved for Coprocessor) - 49. */ + .long 0 /* (Reserved for Coprocessor) - 50. */ + .long 0 /* (Reserved for Coprocessor) - 51. */ + .long 0 /* (Reserved for Coprocessor) - 52. */ + .long 0 /* (Reserved for Coprocessor) - 53. */ + .long 0 /* (Reserved for Coprocessor) - 54. */ + .long 0 /* (Reserved for Coprocessor) - 55. */ + .long 0 /* (Reserved for Coprocessor) - 56. */ + .long 0 /* (Reserved for Coprocessor) - 57. */ + .long 0 /* (Reserved for Coprocessor) - 58. */ + .long 0 /* (Unassigned, Reserved) - 59. */ + .long 0 /* (Unassigned, Reserved) - 60. */ + .long 0 /* (Unassigned, Reserved) - 61. */ + .long 0 /* (Unassigned, Reserved) - 62. */ + .long 0 /* (Unassigned, Reserved) - 63. */ + /* The assignment of these vectors to the CPM is */ + /* dependent on the configuration of the CPM vba */ + /* fields. */ + .long 0 /* (User-Defined Vectors 1) CPM Error - 64. */ + .long 0 /* (User-Defined Vectors 2) CPM Parallel IO PC11- 65. */ + .long 0 /* (User-Defined Vectors 3) CPM Parallel IO PC10- 66. */ + .long 0 /* (User-Defined Vectors 4) CPM SMC2 / PIP - 67. */ + .long 0 /* (User-Defined Vectors 5) CPM SMC1 - 68. */ + .long 0 /* (User-Defined Vectors 6) CPM SPI - 69. */ + .long 0 /* (User-Defined Vectors 7) CPM Parallel IO PC9 - 70. */ + .long 0 /* (User-Defined Vectors 8) CPM Timer 4 - 71. */ + .long 0 /* (User-Defined Vectors 9) CPM Reserved - 72. */ + .long 0 /* (User-Defined Vectors 10) CPM Parallel IO PC8- 73. */ + .long 0 /* (User-Defined Vectors 11) CPM Parallel IO PC7- 74. */ + .long 0 /* (User-Defined Vectors 12) CPM Parallel IO PC6- 75. */ + .long 0 /* (User-Defined Vectors 13) CPM Timer 3 - 76. */ + .long 0 /* (User-Defined Vectors 14) CPM Reserved - 77. */ + .long 0 /* (User-Defined Vectors 15) CPM Parallel IO PC5- 78. */ + .long 0 /* (User-Defined Vectors 16) CPM Parallel IO PC4- 79. */ + .long 0 /* (User-Defined Vectors 17) CPM Reserved - 80. */ + .long 0 /* (User-Defined Vectors 18) CPM RISC Timer Tbl - 81. */ + .long 0 /* (User-Defined Vectors 19) CPM Timer 2 - 82. */ + .long 0 /* (User-Defined Vectors 21) CPM Reserved - 83. */ + .long 0 /* (User-Defined Vectors 22) CPM IDMA2 - 84. */ + .long 0 /* (User-Defined Vectors 23) CPM IDMA1 - 85. */ + .long 0 /* (User-Defined Vectors 24) CPM SDMA Bus Err - 86. */ + .long 0 /* (User-Defined Vectors 25) CPM Parallel IO PC3- 87. */ + .long 0 /* (User-Defined Vectors 26) CPM Parallel IO PC2- 88. */ + .long 0 /* (User-Defined Vectors 27) CPM Timer 1 - 89. */ + .long 0 /* (User-Defined Vectors 28) CPM Parallel IO PC1- 90. */ + .long 0 /* (User-Defined Vectors 29) CPM SCC 4 - 91. */ + .long 0 /* (User-Defined Vectors 30) CPM SCC 3 - 92. */ + .long 0 /* (User-Defined Vectors 31) CPM SCC 2 - 93. */ + .long 0 /* (User-Defined Vectors 32) CPM SCC 1 - 94. */ + .long 0 /* (User-Defined Vectors 33) CPM Parallel IO PC0- 95. */ + /* I don't think anything uses the vectors after here. */ + .long 0 /* (User-Defined Vectors 34) - 96. */ + .long 0,0,0,0,0 /* (User-Defined Vectors 35 - 39). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 40 - 49). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 50 - 59). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 60 - 69). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 70 - 79). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 80 - 89). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 90 - 99). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 100 - 109). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 110 - 119). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 120 - 129). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 130 - 139). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 140 - 149). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 150 - 159). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 160 - 169). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 170 - 179). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 180 - 189). */ + .long 0,0,0 /* (User-Defined Vectors 190 - 192). */ +.text +ignore: rte diff --git a/arch/m68k/platform/68360/head-rom.S b/arch/m68k/platform/68360/head-rom.S new file mode 100644 index 0000000..97510e5 --- /dev/null +++ b/arch/m68k/platform/68360/head-rom.S @@ -0,0 +1,414 @@ +/* arch/m68knommu/platform/68360/head-rom.S + * + * Startup code for Motorola 68360 + * + * Copyright (C) SED Systems, a Division of Calian Ltd. + * Based on: arch/m68knommu/platform/68328/pilot/crt0_rom.S + * Based on: arch/m68knommu/platform/68360/uCquicc/crt0_rom.S, 2.0.38.1.pre7 + * uClinux Kernel + * Copyright (C) Michael Leslie <mleslie@lineo.com> + * Based on: arch/m68knommu/platform/68EZ328/ucsimm/crt0_rom.S + * Copyright (C) 1998 D. Jeff Dionne <jeff@uclinux.org>, + * + */ + +.global _stext +.global _sbss +.global _start + +.global _rambase +.global _ramvec +.global _ramstart +.global _ramend + +.global _quicc_base +.global _periph_base + +#define RAMEND (CONFIG_RAMBASE + CONFIG_RAMSIZE) + +#define REGB 0x1000 +#define PEPAR (_dprbase + REGB + 0x0016) +#define GMR (_dprbase + REGB + 0x0040) +#define OR0 (_dprbase + REGB + 0x0054) +#define BR0 (_dprbase + REGB + 0x0050) + +#define OR1 (_dprbase + REGB + 0x0064) +#define BR1 (_dprbase + REGB + 0x0060) + +#define OR2 (_dprbase + REGB + 0x0074) +#define BR2 (_dprbase + REGB + 0x0070) + +#define OR3 (_dprbase + REGB + 0x0084) +#define BR3 (_dprbase + REGB + 0x0080) + +#define OR4 (_dprbase + REGB + 0x0094) +#define BR4 (_dprbase + REGB + 0x0090) + +#define OR5 (_dprbase + REGB + 0x00A4) +#define BR5 (_dprbase + REGB + 0x00A0) + +#define OR6 (_dprbase + REGB + 0x00b4) +#define BR6 (_dprbase + REGB + 0x00b0) + +#define OR7 (_dprbase + REGB + 0x00c4) +#define BR7 (_dprbase + REGB + 0x00c0) + +#define MCR (_dprbase + REGB + 0x0000) +#define AVR (_dprbase + REGB + 0x0008) + +#define SYPCR (_dprbase + REGB + 0x0022) + +#define PLLCR (_dprbase + REGB + 0x0010) +#define CLKOCR (_dprbase + REGB + 0x000C) +#define CDVCR (_dprbase + REGB + 0x0014) + +#define BKAR (_dprbase + REGB + 0x0030) +#define BKCR (_dprbase + REGB + 0x0034) +#define SWIV (_dprbase + REGB + 0x0023) +#define PICR (_dprbase + REGB + 0x0026) +#define PITR (_dprbase + REGB + 0x002A) + +/* Define for all memory configuration */ +#define MCU_SIM_GMR 0x00000000 +#define SIM_OR_MASK 0x0fffffff + +/* Defines for chip select zero - the flash */ +#define SIM_OR0_MASK 0x20000000 +#define SIM_BR0_MASK 0x00000001 + +/* Defines for chip select one - the RAM */ +#define SIM_OR1_MASK 0x10000000 +#define SIM_BR1_MASK 0x00000001 + +#define MCU_SIM_MBAR_ADRS 0x0003ff00 +#define MCU_SIM_MBAR_BA_MASK 0xfffff000 +#define MCU_SIM_MBAR_AS_MASK 0x00000001 + +#define MCU_SIM_PEPAR 0x00B4 + +#define MCU_DISABLE_INTRPTS 0x2700 +#define MCU_SIM_AVR 0x00 + +#define MCU_SIM_MCR 0x00005cff + +#define MCU_SIM_CLKOCR 0x00 +#define MCU_SIM_PLLCR 0x8000 +#define MCU_SIM_CDVCR 0x0000 + +#define MCU_SIM_SYPCR 0x0000 +#define MCU_SIM_SWIV 0x00 +#define MCU_SIM_PICR 0x0000 +#define MCU_SIM_PITR 0x0000 + + +#include <asm/m68360_regs.h> + + +/* + * By the time this RAM specific code begins to execute, DPRAM + * and DRAM should already be mapped and accessible. + */ + + .text +_start: +_stext: + nop + ori.w #MCU_DISABLE_INTRPTS, %sr /* disable interrupts: */ + /* We should not need to setup the boot stack the reset should do it. */ + movea.l #RAMEND, %sp /* set up stack at the end of DRAM:*/ + + +set_mbar_register: + moveq.l #0x07, %d1 /* Setup MBAR */ + movec %d1, %dfc + + lea.l MCU_SIM_MBAR_ADRS, %a0 + move.l #_dprbase, %d0 + andi.l #MCU_SIM_MBAR_BA_MASK, %d0 + ori.l #MCU_SIM_MBAR_AS_MASK, %d0 + moves.l %d0, %a0@ + + moveq.l #0x05, %d1 + movec.l %d1, %dfc + + /* Now we can begin to access registers in DPRAM */ + +set_sim_mcr: + /* Set Module Configuration Register */ + move.l #MCU_SIM_MCR, MCR + + /* to do: Determine cause of reset */ + + /* + * configure system clock MC68360 p. 6-40 + * (value +1)*osc/128 = system clock + * or + * (value + 1)*osc = system clock + * You do not need to divide the oscillator by 128 unless you want to. + */ +set_sim_clock: + move.w #MCU_SIM_PLLCR, PLLCR + move.b #MCU_SIM_CLKOCR, CLKOCR + move.w #MCU_SIM_CDVCR, CDVCR + + /* Wait for the PLL to settle */ + move.w #16384, %d0 +pll_settle_wait: + subi.w #1, %d0 + bne pll_settle_wait + + /* Setup the system protection register, and watchdog timer register */ + move.b #MCU_SIM_SWIV, SWIV + move.w #MCU_SIM_PICR, PICR + move.w #MCU_SIM_PITR, PITR + move.w #MCU_SIM_SYPCR, SYPCR + + /* Clear DPRAM - system + parameter */ + movea.l #_dprbase, %a0 + movea.l #_dprbase+0x2000, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +clear_dpram: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi clear_dpram + +configure_memory_controller: + /* Set up Global Memory Register (GMR) */ + move.l #MCU_SIM_GMR, %d0 + move.l %d0, GMR + +configure_chip_select_0: + move.l #0x00400000, %d0 + subq.l #0x01, %d0 + eori.l #SIM_OR_MASK, %d0 + ori.l #SIM_OR0_MASK, %d0 + move.l %d0, OR0 + + move.l #__rom_start, %d0 + ori.l #SIM_BR0_MASK, %d0 + move.l %d0, BR0 + + move.l #0x0, BR1 + move.l #0x0, BR2 + move.l #0x0, BR3 + move.l #0x0, BR4 + move.l #0x0, BR5 + move.l #0x0, BR6 + move.l #0x0, BR7 + + move.w #MCU_SIM_PEPAR, PEPAR + + /* point to vector table: */ + move.l #_romvec, %a0 + move.l #_ramvec, %a1 +copy_vectors: + move.l %a0@, %d0 + move.l %d0, %a1@ + move.l %a0@, %a1@ + addq.l #0x04, %a0 + addq.l #0x04, %a1 + cmp.l #_start, %a0 + blt copy_vectors + + move.l #_ramvec, %a1 + movec %a1, %vbr + + + /* Copy data segment from ROM to RAM */ + moveal #_etext, %a0 + moveal #_sdata, %a1 + moveal #_edata, %a2 + + /* Copy %a0 to %a1 until %a1 == %a2 */ +LD1: + move.l %a0@, %d0 + addq.l #0x04, %a0 + move.l %d0, %a1@ + addq.l #0x04, %a1 + cmp.l #_edata, %a1 + blt LD1 + + moveal #_sbss, %a0 + moveal #_ebss, %a1 + + /* Copy 0 to %a0 until %a0 == %a1 */ +L1: + movel #0, %a0@+ + cmpal %a0, %a1 + bhi L1 + +load_quicc: + move.l #_dprbase, _quicc_base + +store_ram_size: + /* Set ram size information */ + move.l #_sdata, _rambase + move.l #_ebss, _ramstart + move.l #RAMEND, %d0 + sub.l #0x1000, %d0 /* Reserve 4K for stack space.*/ + move.l %d0, _ramend /* Different from RAMEND.*/ + + pea 0 + pea env + pea %sp@(4) + pea 0 + + lea init_thread_union, %a2 + lea 0x2000(%a2), %sp + +lp: + jsr start_kernel + +_exit: + jmp _exit + + + .data + .align 4 +env: + .long 0 +_quicc_base: + .long 0 +_periph_base: + .long 0 +_ramvec: + .long 0 +_rambase: + .long 0 +_ramstart: + .long 0 +_ramend: + .long 0 +_dprbase: + .long 0xffffe000 + + + .text + + /* + * These are the exception vectors at boot up, they are copied into RAM + * and then overwritten as needed. + */ + +.section ".data..initvect","awx" + .long RAMEND /* Reset: Initial Stack Pointer - 0. */ + .long _start /* Reset: Initial Program Counter - 1. */ + .long buserr /* Bus Error - 2. */ + .long trap /* Address Error - 3. */ + .long trap /* Illegal Instruction - 4. */ + .long trap /* Divide by zero - 5. */ + .long trap /* CHK, CHK2 Instructions - 6. */ + .long trap /* TRAPcc, TRAPV Instructions - 7. */ + .long trap /* Privilege Violation - 8. */ + .long trap /* Trace - 9. */ + .long trap /* Line 1010 Emulator - 10. */ + .long trap /* Line 1111 Emualtor - 11. */ + .long trap /* Harware Breakpoint - 12. */ + .long trap /* (Reserved for Coprocessor Protocol Violation)- 13. */ + .long trap /* Format Error - 14. */ + .long trap /* Uninitialized Interrupt - 15. */ + .long trap /* (Unassigned, Reserver) - 16. */ + .long trap /* (Unassigned, Reserver) - 17. */ + .long trap /* (Unassigned, Reserver) - 18. */ + .long trap /* (Unassigned, Reserver) - 19. */ + .long trap /* (Unassigned, Reserver) - 20. */ + .long trap /* (Unassigned, Reserver) - 21. */ + .long trap /* (Unassigned, Reserver) - 22. */ + .long trap /* (Unassigned, Reserver) - 23. */ + .long trap /* Spurious Interrupt - 24. */ + .long trap /* Level 1 Interrupt Autovector - 25. */ + .long trap /* Level 2 Interrupt Autovector - 26. */ + .long trap /* Level 3 Interrupt Autovector - 27. */ + .long trap /* Level 4 Interrupt Autovector - 28. */ + .long trap /* Level 5 Interrupt Autovector - 29. */ + .long trap /* Level 6 Interrupt Autovector - 30. */ + .long trap /* Level 7 Interrupt Autovector - 31. */ + .long system_call /* Trap Instruction Vectors 0 - 32. */ + .long trap /* Trap Instruction Vectors 1 - 33. */ + .long trap /* Trap Instruction Vectors 2 - 34. */ + .long trap /* Trap Instruction Vectors 3 - 35. */ + .long trap /* Trap Instruction Vectors 4 - 36. */ + .long trap /* Trap Instruction Vectors 5 - 37. */ + .long trap /* Trap Instruction Vectors 6 - 38. */ + .long trap /* Trap Instruction Vectors 7 - 39. */ + .long trap /* Trap Instruction Vectors 8 - 40. */ + .long trap /* Trap Instruction Vectors 9 - 41. */ + .long trap /* Trap Instruction Vectors 10 - 42. */ + .long trap /* Trap Instruction Vectors 11 - 43. */ + .long trap /* Trap Instruction Vectors 12 - 44. */ + .long trap /* Trap Instruction Vectors 13 - 45. */ + .long trap /* Trap Instruction Vectors 14 - 46. */ + .long trap /* Trap Instruction Vectors 15 - 47. */ + .long 0 /* (Reserved for Coprocessor) - 48. */ + .long 0 /* (Reserved for Coprocessor) - 49. */ + .long 0 /* (Reserved for Coprocessor) - 50. */ + .long 0 /* (Reserved for Coprocessor) - 51. */ + .long 0 /* (Reserved for Coprocessor) - 52. */ + .long 0 /* (Reserved for Coprocessor) - 53. */ + .long 0 /* (Reserved for Coprocessor) - 54. */ + .long 0 /* (Reserved for Coprocessor) - 55. */ + .long 0 /* (Reserved for Coprocessor) - 56. */ + .long 0 /* (Reserved for Coprocessor) - 57. */ + .long 0 /* (Reserved for Coprocessor) - 58. */ + .long 0 /* (Unassigned, Reserved) - 59. */ + .long 0 /* (Unassigned, Reserved) - 60. */ + .long 0 /* (Unassigned, Reserved) - 61. */ + .long 0 /* (Unassigned, Reserved) - 62. */ + .long 0 /* (Unassigned, Reserved) - 63. */ + /* The assignment of these vectors to the CPM is */ + /* dependent on the configuration of the CPM vba */ + /* fields. */ + .long 0 /* (User-Defined Vectors 1) CPM Error - 64. */ + .long 0 /* (User-Defined Vectors 2) CPM Parallel IO PC11- 65. */ + .long 0 /* (User-Defined Vectors 3) CPM Parallel IO PC10- 66. */ + .long 0 /* (User-Defined Vectors 4) CPM SMC2 / PIP - 67. */ + .long 0 /* (User-Defined Vectors 5) CPM SMC1 - 68. */ + .long 0 /* (User-Defined Vectors 6) CPM SPI - 69. */ + .long 0 /* (User-Defined Vectors 7) CPM Parallel IO PC9 - 70. */ + .long 0 /* (User-Defined Vectors 8) CPM Timer 4 - 71. */ + .long 0 /* (User-Defined Vectors 9) CPM Reserved - 72. */ + .long 0 /* (User-Defined Vectors 10) CPM Parallel IO PC8- 73. */ + .long 0 /* (User-Defined Vectors 11) CPM Parallel IO PC7- 74. */ + .long 0 /* (User-Defined Vectors 12) CPM Parallel IO PC6- 75. */ + .long 0 /* (User-Defined Vectors 13) CPM Timer 3 - 76. */ + .long 0 /* (User-Defined Vectors 14) CPM Reserved - 77. */ + .long 0 /* (User-Defined Vectors 15) CPM Parallel IO PC5- 78. */ + .long 0 /* (User-Defined Vectors 16) CPM Parallel IO PC4- 79. */ + .long 0 /* (User-Defined Vectors 17) CPM Reserved - 80. */ + .long 0 /* (User-Defined Vectors 18) CPM RISC Timer Tbl - 81. */ + .long 0 /* (User-Defined Vectors 19) CPM Timer 2 - 82. */ + .long 0 /* (User-Defined Vectors 21) CPM Reserved - 83. */ + .long 0 /* (User-Defined Vectors 22) CPM IDMA2 - 84. */ + .long 0 /* (User-Defined Vectors 23) CPM IDMA1 - 85. */ + .long 0 /* (User-Defined Vectors 24) CPM SDMA Bus Err - 86. */ + .long 0 /* (User-Defined Vectors 25) CPM Parallel IO PC3- 87. */ + .long 0 /* (User-Defined Vectors 26) CPM Parallel IO PC2- 88. */ + .long 0 /* (User-Defined Vectors 27) CPM Timer 1 - 89. */ + .long 0 /* (User-Defined Vectors 28) CPM Parallel IO PC1- 90. */ + .long 0 /* (User-Defined Vectors 29) CPM SCC 4 - 91. */ + .long 0 /* (User-Defined Vectors 30) CPM SCC 3 - 92. */ + .long 0 /* (User-Defined Vectors 31) CPM SCC 2 - 93. */ + .long 0 /* (User-Defined Vectors 32) CPM SCC 1 - 94. */ + .long 0 /* (User-Defined Vectors 33) CPM Parallel IO PC0- 95. */ + /* I don't think anything uses the vectors after here. */ + .long 0 /* (User-Defined Vectors 34) - 96. */ + .long 0,0,0,0,0 /* (User-Defined Vectors 35 - 39). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 40 - 49). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 50 - 59). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 60 - 69). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 70 - 79). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 80 - 89). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 90 - 99). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 100 - 109). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 110 - 119). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 120 - 129). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 130 - 139). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 140 - 149). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 150 - 159). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 160 - 169). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 170 - 179). */ + .long 0,0,0,0,0,0,0,0,0,0 /* (User-Defined Vectors 180 - 189). */ + .long 0,0,0 /* (User-Defined Vectors 190 - 192). */ +.text +ignore: rte diff --git a/arch/m68k/platform/68360/ints.c b/arch/m68k/platform/68360/ints.c new file mode 100644 index 0000000..8de3feb --- /dev/null +++ b/arch/m68k/platform/68360/ints.c @@ -0,0 +1,139 @@ +/* + * linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Copyright (c) 2000 Michael Leslie <mleslie@lineo.com> + * Copyright (c) 1996 Roman Zippel + * Copyright (c) 1999 D. Jeff Dionne <jeff@uclinux.org> + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/m68360.h> + +/* from quicc/commproc.c: */ +extern QUICC *pquicc; +extern void cpm_interrupt_init(void); + +#define INTERNAL_IRQS (96) + +/* assembler routines */ +asmlinkage void system_call(void); +asmlinkage void buserr(void); +asmlinkage void trap(void); +asmlinkage void bad_interrupt(void); +asmlinkage void inthandler(void); + +extern void *_ramvec[]; + +/* The number of spurious interrupts */ +volatile unsigned int num_spurious; + +static void intc_irq_unmask(struct irq_data *d) +{ + pquicc->intr_cimr |= (1 << d->irq); +} + +static void intc_irq_mask(struct irq_data *d) +{ + pquicc->intr_cimr &= ~(1 << d->irq); +} + +static void intc_irq_ack(struct irq_data *d) +{ + pquicc->intr_cisr = (1 << d->irq); +} + +static struct irq_chip intc_irq_chip = { + .name = "M68K-INTC", + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_ack = intc_irq_ack, +}; + +/* + * This function should be called during kernel startup to initialize + * the vector table. + */ +void init_IRQ(void) +{ + int i; + int vba = (CPM_VECTOR_BASE<<4); + + /* set up the vectors */ + _ramvec[2] = buserr; + _ramvec[3] = trap; + _ramvec[4] = trap; + _ramvec[5] = trap; + _ramvec[6] = trap; + _ramvec[7] = trap; + _ramvec[8] = trap; + _ramvec[9] = trap; + _ramvec[10] = trap; + _ramvec[11] = trap; + _ramvec[12] = trap; + _ramvec[13] = trap; + _ramvec[14] = trap; + _ramvec[15] = trap; + + _ramvec[32] = system_call; + _ramvec[33] = trap; + + cpm_interrupt_init(); + + /* set up CICR for vector base address and irq level */ + /* irl = 4, hp = 1f - see MC68360UM p 7-377 */ + pquicc->intr_cicr = 0x00e49f00 | vba; + + /* CPM interrupt vectors: (p 7-376) */ + _ramvec[vba+CPMVEC_ERROR] = bad_interrupt; /* Error */ + _ramvec[vba+CPMVEC_PIO_PC11] = inthandler; /* pio - pc11 */ + _ramvec[vba+CPMVEC_PIO_PC10] = inthandler; /* pio - pc10 */ + _ramvec[vba+CPMVEC_SMC2] = inthandler; /* smc2/pip */ + _ramvec[vba+CPMVEC_SMC1] = inthandler; /* smc1 */ + _ramvec[vba+CPMVEC_SPI] = inthandler; /* spi */ + _ramvec[vba+CPMVEC_PIO_PC9] = inthandler; /* pio - pc9 */ + _ramvec[vba+CPMVEC_TIMER4] = inthandler; /* timer 4 */ + _ramvec[vba+CPMVEC_RESERVED1] = inthandler; /* reserved */ + _ramvec[vba+CPMVEC_PIO_PC8] = inthandler; /* pio - pc8 */ + _ramvec[vba+CPMVEC_PIO_PC7] = inthandler; /* pio - pc7 */ + _ramvec[vba+CPMVEC_PIO_PC6] = inthandler; /* pio - pc6 */ + _ramvec[vba+CPMVEC_TIMER3] = inthandler; /* timer 3 */ + _ramvec[vba+CPMVEC_PIO_PC5] = inthandler; /* pio - pc5 */ + _ramvec[vba+CPMVEC_PIO_PC4] = inthandler; /* pio - pc4 */ + _ramvec[vba+CPMVEC_RESERVED2] = inthandler; /* reserved */ + _ramvec[vba+CPMVEC_RISCTIMER] = inthandler; /* timer table */ + _ramvec[vba+CPMVEC_TIMER2] = inthandler; /* timer 2 */ + _ramvec[vba+CPMVEC_RESERVED3] = inthandler; /* reserved */ + _ramvec[vba+CPMVEC_IDMA2] = inthandler; /* idma 2 */ + _ramvec[vba+CPMVEC_IDMA1] = inthandler; /* idma 1 */ + _ramvec[vba+CPMVEC_SDMA_CB_ERR] = inthandler; /* sdma channel bus error */ + _ramvec[vba+CPMVEC_PIO_PC3] = inthandler; /* pio - pc3 */ + _ramvec[vba+CPMVEC_PIO_PC2] = inthandler; /* pio - pc2 */ + /* _ramvec[vba+CPMVEC_TIMER1] = cpm_isr_timer1; */ /* timer 1 */ + _ramvec[vba+CPMVEC_TIMER1] = inthandler; /* timer 1 */ + _ramvec[vba+CPMVEC_PIO_PC1] = inthandler; /* pio - pc1 */ + _ramvec[vba+CPMVEC_SCC4] = inthandler; /* scc 4 */ + _ramvec[vba+CPMVEC_SCC3] = inthandler; /* scc 3 */ + _ramvec[vba+CPMVEC_SCC2] = inthandler; /* scc 2 */ + _ramvec[vba+CPMVEC_SCC1] = inthandler; /* scc 1 */ + _ramvec[vba+CPMVEC_PIO_PC0] = inthandler; /* pio - pc0 */ + + + /* turn off all CPM interrupts */ + pquicc->intr_cimr = 0x00000000; + + for (i = 0; (i < NR_IRQS); i++) { + set_irq_chip(i, &intc_irq_chip); + set_irq_handler(i, handle_level_irq); + } +} + diff --git a/arch/m68k/platform/68EZ328/Makefile b/arch/m68k/platform/68EZ328/Makefile new file mode 100644 index 0000000..ee97735 --- /dev/null +++ b/arch/m68k/platform/68EZ328/Makefile @@ -0,0 +1,11 @@ +# +# Makefile for arch/m68knommu/platform/68EZ328. +# + +obj-y := config.o + +extra-y := bootlogo.rh + +$(obj)/bootlogo.rh: $(src)/bootlogo.h + perl $(src)/../68328/bootlogo.pl < $(src)/bootlogo.h \ + > $(obj)/bootlogo.rh diff --git a/arch/m68k/platform/68EZ328/bootlogo.h b/arch/m68k/platform/68EZ328/bootlogo.h new file mode 100644 index 0000000..e842bda --- /dev/null +++ b/arch/m68k/platform/68EZ328/bootlogo.h @@ -0,0 +1,3204 @@ +#define splash_width 640 +#define splash_height 480 +static unsigned char splash_bits[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 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+/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/68EZ328/config.c + * + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/***************************************************************************/ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/machdep.h> +#include <asm/MC68EZ328.h> +#ifdef CONFIG_UCSIMM +#include <asm/bootstd.h> +#endif + +/***************************************************************************/ + +void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec); + +/***************************************************************************/ + +void m68ez328_reset(void) +{ + local_irq_disable(); + asm volatile ( + "moveal #0x10c00000, %a0;\n" + "moveb #0, 0xFFFFF300;\n" + "moveal 0(%a0), %sp;\n" + "moveal 4(%a0), %a0;\n" + "jmp (%a0);\n" + ); +} + +/***************************************************************************/ + +unsigned char *cs8900a_hwaddr; +static int errno; + +#ifdef CONFIG_UCSIMM +_bsc0(char *, getserialnum) +_bsc1(unsigned char *, gethwaddr, int, a) +_bsc1(char *, getbenv, char *, a) +#endif + +void config_BSP(char *command, int len) +{ + unsigned char *p; + + printk(KERN_INFO "\n68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n"); + +#ifdef CONFIG_UCSIMM + printk(KERN_INFO "uCsimm serial string [%s]\n",getserialnum()); + p = cs8900a_hwaddr = gethwaddr(0); + printk(KERN_INFO "uCsimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n", + p[0], p[1], p[2], p[3], p[4], p[5]); + + p = getbenv("APPEND"); + if (p) strcpy(p,command); + else command[0] = 0; +#endif + + mach_gettod = m68328_timer_gettod; + mach_reset = m68ez328_reset; +} + +/***************************************************************************/ diff --git a/arch/m68k/platform/68VZ328/Makefile b/arch/m68k/platform/68VZ328/Makefile new file mode 100644 index 0000000..447ffa0 --- /dev/null +++ b/arch/m68k/platform/68VZ328/Makefile @@ -0,0 +1,16 @@ +# +# Makefile for arch/m68knommu/platform/68VZ328. +# + +obj-y := config.o +logo-$(UCDIMM) := bootlogo.rh +logo-$(DRAGEN2) := screen.h +extra-y := $(logo-y) + +$(obj)/bootlogo.rh: $(src)/../68EZ328/bootlogo.h + perl $(src)/bootlogo.pl < $(src)/../68328/bootlogo.h > $(obj)/bootlogo.rh + +$(obj)/screen.h: $(src)/screen.xbm $(src)/xbm2lcd.pl + perl $(src)/xbm2lcd.pl < $(src)/screen.xbm > $(obj)/screen.h + +clean-files := $(obj)/screen.h $(obj)/bootlogo.rh diff --git a/arch/m68k/platform/68VZ328/config.c b/arch/m68k/platform/68VZ328/config.c new file mode 100644 index 0000000..eabaabe --- /dev/null +++ b/arch/m68k/platform/68VZ328/config.c @@ -0,0 +1,188 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/68VZ328/config.c + * + * Copyright (C) 1993 Hamish Macdonald + * Copyright (C) 1999 D. Jeff Dionne + * Copyright (C) 2001 Georges Menie, Ken Desmet + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/***************************************************************************/ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/kd.h> +#include <linux/netdevice.h> +#include <linux/interrupt.h> +#include <linux/irq.h> + +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/machdep.h> +#include <asm/MC68VZ328.h> +#include <asm/bootstd.h> + +#ifdef CONFIG_INIT_LCD +#include "bootlogo.h" +#endif + +/***************************************************************************/ + +void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec); + +/***************************************************************************/ +/* Init Drangon Engine hardware */ +/***************************************************************************/ +#if defined(CONFIG_DRAGEN2) + +static void m68vz328_reset(void) +{ + local_irq_disable(); + +#ifdef CONFIG_INIT_LCD + PBDATA |= 0x20; /* disable CCFL light */ + PKDATA |= 0x4; /* disable LCD controller */ + LCKCON = 0; +#endif + + __asm__ __volatile__( + "reset\n\t" + "moveal #0x04000000, %a0\n\t" + "moveal 0(%a0), %sp\n\t" + "moveal 4(%a0), %a0\n\t" + "jmp (%a0)" + ); +} + +static void init_hardware(char *command, int size) +{ +#ifdef CONFIG_DIRECT_IO_ACCESS + SCR = 0x10; /* allow user access to internal registers */ +#endif + + /* CSGB Init */ + CSGBB = 0x4000; + CSB = 0x1a1; + + /* CS8900 init */ + /* PK3: hardware sleep function pin, active low */ + PKSEL |= PK(3); /* select pin as I/O */ + PKDIR |= PK(3); /* select pin as output */ + PKDATA |= PK(3); /* set pin high */ + + /* PF5: hardware reset function pin, active high */ + PFSEL |= PF(5); /* select pin as I/O */ + PFDIR |= PF(5); /* select pin as output */ + PFDATA &= ~PF(5); /* set pin low */ + + /* cs8900 hardware reset */ + PFDATA |= PF(5); + { int i; for (i = 0; i < 32000; ++i); } + PFDATA &= ~PF(5); + + /* INT1 enable (cs8900 IRQ) */ + PDPOL &= ~PD(1); /* active high signal */ + PDIQEG &= ~PD(1); + PDIRQEN |= PD(1); /* IRQ enabled */ + +#ifdef CONFIG_INIT_LCD + /* initialize LCD controller */ + LSSA = (long) screen_bits; + LVPW = 0x14; + LXMAX = 0x140; + LYMAX = 0xef; + LRRA = 0; + LPXCD = 3; + LPICF = 0x08; + LPOLCF = 0; + LCKCON = 0x80; + PCPDEN = 0xff; + PCSEL = 0; + + /* Enable LCD controller */ + PKDIR |= 0x4; + PKSEL |= 0x4; + PKDATA &= ~0x4; + + /* Enable CCFL backlighting circuit */ + PBDIR |= 0x20; + PBSEL |= 0x20; + PBDATA &= ~0x20; + + /* contrast control register */ + PFDIR |= 0x1; + PFSEL &= ~0x1; + PWMR = 0x037F; +#endif +} + +/***************************************************************************/ +/* Init RT-Control uCdimm hardware */ +/***************************************************************************/ +#elif defined(CONFIG_UCDIMM) + +static void m68vz328_reset(void) +{ + local_irq_disable(); + asm volatile ( + "moveal #0x10c00000, %a0;\n\t" + "moveb #0, 0xFFFFF300;\n\t" + "moveal 0(%a0), %sp;\n\t" + "moveal 4(%a0), %a0;\n\t" + "jmp (%a0);\n" + ); +} + +unsigned char *cs8900a_hwaddr; +static int errno; + +_bsc0(char *, getserialnum) +_bsc1(unsigned char *, gethwaddr, int, a) +_bsc1(char *, getbenv, char *, a) + +static void init_hardware(char *command, int size) +{ + char *p; + + printk(KERN_INFO "uCdimm serial string [%s]\n", getserialnum()); + p = cs8900a_hwaddr = gethwaddr(0); + printk(KERN_INFO "uCdimm hwaddr %.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n", + p[0], p[1], p[2], p[3], p[4], p[5]); + p = getbenv("APPEND"); + if (p) + strcpy(p, command); + else + command[0] = 0; +} + +/***************************************************************************/ +#else + +static void m68vz328_reset(void) +{ +} + +static void init_hardware(char *command, int size) +{ +} + +/***************************************************************************/ +#endif +/***************************************************************************/ + +void config_BSP(char *command, int size) +{ + printk(KERN_INFO "68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n"); + + init_hardware(command, size); + + mach_gettod = m68328_timer_gettod; + mach_reset = m68vz328_reset; +} + +/***************************************************************************/ diff --git a/arch/m68k/platform/Makefile b/arch/m68k/platform/Makefile new file mode 100644 index 0000000..fc932bf --- /dev/null +++ b/arch/m68k/platform/Makefile @@ -0,0 +1,3 @@ +# +# Makefile for the arch/m68knommu/platform. +# diff --git a/arch/m68k/platform/coldfire/Makefile b/arch/m68k/platform/coldfire/Makefile new file mode 100644 index 0000000..a8967ba --- /dev/null +++ b/arch/m68k/platform/coldfire/Makefile @@ -0,0 +1,32 @@ +# +# Makefile for the m68knommu kernel. +# + +# +# If you want to play with the HW breakpoints then you will +# need to add define this, which will give you a stack backtrace +# on the console port whenever a DBG interrupt occurs. You have to +# set up you HW breakpoints to trigger a DBG interrupt: +# +# ccflags-y := -DTRAP_DBG_INTERRUPT +# asflags-y := -DTRAP_DBG_INTERRUPT +# + +asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 + +obj-$(CONFIG_COLDFIRE) += cache.o clk.o dma.o entry.o vectors.o +obj-$(CONFIG_M5206) += timers.o intc.o +obj-$(CONFIG_M5206e) += timers.o intc.o +obj-$(CONFIG_M520x) += pit.o intc-simr.o +obj-$(CONFIG_M523x) += pit.o dma_timer.o intc-2.o +obj-$(CONFIG_M5249) += timers.o intc.o +obj-$(CONFIG_M527x) += pit.o intc-2.o +obj-$(CONFIG_M5272) += timers.o +obj-$(CONFIG_M528x) += pit.o intc-2.o +obj-$(CONFIG_M5307) += timers.o intc.o +obj-$(CONFIG_M532x) += timers.o intc-simr.o +obj-$(CONFIG_M5407) += timers.o intc.o +obj-$(CONFIG_M54xx) += sltimers.o intc-2.o + +obj-y += pinmux.o gpio.o +extra-y := head.o diff --git a/arch/m68k/platform/coldfire/cache.c b/arch/m68k/platform/coldfire/cache.c new file mode 100644 index 0000000..235d3c4 --- /dev/null +++ b/arch/m68k/platform/coldfire/cache.c @@ -0,0 +1,48 @@ +/***************************************************************************/ + +/* + * cache.c -- general ColdFire Cache maintainence code + * + * Copyright (C) 2010, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ +#ifdef CACHE_PUSH +/***************************************************************************/ + +/* + * Use cpushl to push all dirty cache lines back to memory. + * Older versions of GAS don't seem to know how to generate the + * ColdFire cpushl instruction... Oh well, bit stuff it for now. + */ + +void mcf_cache_push(void) +{ + __asm__ __volatile__ ( + "clrl %%d0\n\t" + "1:\n\t" + "movel %%d0,%%a0\n\t" + "2:\n\t" + ".word 0xf468\n\t" + "addl %0,%%a0\n\t" + "cmpl %1,%%a0\n\t" + "blt 2b\n\t" + "addql #1,%%d0\n\t" + "cmpil %2,%%d0\n\t" + "bne 1b\n\t" + : /* No output */ + : "i" (CACHE_LINE_SIZE), + "i" (DCACHE_SIZE / CACHE_WAYS), + "i" (CACHE_WAYS) + : "d0", "a0" ); +} + +/***************************************************************************/ +#endif /* CACHE_PUSH */ +/***************************************************************************/ diff --git a/arch/m68k/platform/coldfire/clk.c b/arch/m68k/platform/coldfire/clk.c new file mode 100644 index 0000000..9f1260c --- /dev/null +++ b/arch/m68k/platform/coldfire/clk.c @@ -0,0 +1,45 @@ +/***************************************************************************/ + +/* + * clk.c -- general ColdFire CPU kernel clk handling + * + * Copyright (C) 2009, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/clk.h> +#include <asm/coldfire.h> + +/***************************************************************************/ + +struct clk *clk_get(struct device *dev, const char *id) +{ + return NULL; +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); + +unsigned long clk_get_rate(struct clk *clk) +{ + return MCF_CLK; +} +EXPORT_SYMBOL(clk_get_rate); +/***************************************************************************/ diff --git a/arch/m68k/platform/coldfire/dma.c b/arch/m68k/platform/coldfire/dma.c new file mode 100644 index 0000000..e88b95e --- /dev/null +++ b/arch/m68k/platform/coldfire/dma.c @@ -0,0 +1,39 @@ +/***************************************************************************/ + +/* + * dma.c -- Freescale ColdFire DMA support + * + * Copyright (C) 2007, Greg Ungerer (gerg@snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <asm/dma.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfdma.h> + +/***************************************************************************/ + +/* + * DMA channel base address table. + */ +unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = { +#ifdef MCFDMA_BASE0 + MCFDMA_BASE0, +#endif +#ifdef MCFDMA_BASE1 + MCFDMA_BASE1, +#endif +#ifdef MCFDMA_BASE2 + MCFDMA_BASE2, +#endif +#ifdef MCFDMA_BASE3 + MCFDMA_BASE3, +#endif +}; + +unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS]; + +/***************************************************************************/ diff --git a/arch/m68k/platform/coldfire/dma_timer.c b/arch/m68k/platform/coldfire/dma_timer.c new file mode 100644 index 0000000..a5f5628 --- /dev/null +++ b/arch/m68k/platform/coldfire/dma_timer.c @@ -0,0 +1,84 @@ +/* + * dma_timer.c -- Freescale ColdFire DMA Timer. + * + * Copyright (C) 2007, Benedikt Spranger <b.spranger@linutronix.de> + * Copyright (C) 2008. Sebastian Siewior, Linutronix + * + */ + +#include <linux/clocksource.h> +#include <linux/io.h> + +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfpit.h> +#include <asm/mcfsim.h> + +#define DMA_TIMER_0 (0x00) +#define DMA_TIMER_1 (0x40) +#define DMA_TIMER_2 (0x80) +#define DMA_TIMER_3 (0xc0) + +#define DTMR0 (MCF_IPSBAR + DMA_TIMER_0 + 0x400) +#define DTXMR0 (MCF_IPSBAR + DMA_TIMER_0 + 0x402) +#define DTER0 (MCF_IPSBAR + DMA_TIMER_0 + 0x403) +#define DTRR0 (MCF_IPSBAR + DMA_TIMER_0 + 0x404) +#define DTCR0 (MCF_IPSBAR + DMA_TIMER_0 + 0x408) +#define DTCN0 (MCF_IPSBAR + DMA_TIMER_0 + 0x40c) + +#define DMA_FREQ ((MCF_CLK / 2) / 16) + +/* DTMR */ +#define DMA_DTMR_RESTART (1 << 3) +#define DMA_DTMR_CLK_DIV_1 (1 << 1) +#define DMA_DTMR_CLK_DIV_16 (2 << 1) +#define DMA_DTMR_ENABLE (1 << 0) + +static cycle_t cf_dt_get_cycles(struct clocksource *cs) +{ + return __raw_readl(DTCN0); +} + +static struct clocksource clocksource_cf_dt = { + .name = "coldfire_dma_timer", + .rating = 200, + .read = cf_dt_get_cycles, + .mask = CLOCKSOURCE_MASK(32), + .shift = 20, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +static int __init init_cf_dt_clocksource(void) +{ + /* + * We setup DMA timer 0 in free run mode. This incrementing counter is + * used as a highly precious clock source. With MCF_CLOCK = 150 MHz we + * get a ~213 ns resolution and the 32bit register will overflow almost + * every 15 minutes. + */ + __raw_writeb(0x00, DTXMR0); + __raw_writeb(0x00, DTER0); + __raw_writel(0x00000000, DTRR0); + __raw_writew(DMA_DTMR_CLK_DIV_16 | DMA_DTMR_ENABLE, DTMR0); + clocksource_cf_dt.mult = clocksource_hz2mult(DMA_FREQ, + clocksource_cf_dt.shift); + return clocksource_register(&clocksource_cf_dt); +} + +arch_initcall(init_cf_dt_clocksource); + +#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */ +#define CYC2NS_SCALE ((1000000 << CYC2NS_SCALE_FACTOR) / (DMA_FREQ / 1000)) + +static unsigned long long cycles2ns(unsigned long cycl) +{ + return (unsigned long long) ((unsigned long long)cycl * + CYC2NS_SCALE) >> CYC2NS_SCALE_FACTOR; +} + +unsigned long long sched_clock(void) +{ + unsigned long cycl = __raw_readl(DTCN0); + + return cycles2ns(cycl); +} diff --git a/arch/m68k/platform/coldfire/entry.S b/arch/m68k/platform/coldfire/entry.S new file mode 100644 index 0000000..5837cf0 --- /dev/null +++ b/arch/m68k/platform/coldfire/entry.S @@ -0,0 +1,203 @@ +/* + * linux/arch/m68knommu/platform/5307/entry.S + * + * Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, + * Kenneth Albanowski <kjahds@kjahds.com>, + * Copyright (C) 2000 Lineo Inc. (www.lineo.com) + * Copyright (C) 2004-2006 Macq Electronique SA. (www.macqel.com) + * + * Based on: + * + * linux/arch/m68k/kernel/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * ColdFire support by Greg Ungerer (gerg@snapgear.com) + * 5307 fixes by David W. Miller + * linux 2.4 support David McCullough <davidm@snapgear.com> + * Bug, speed and maintainability fixes by Philippe De Muyter <phdm@macqel.be> + */ + +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/unistd.h> +#include <asm/thread_info.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/asm-offsets.h> +#include <asm/entry.h> + +#ifdef CONFIG_COLDFIRE_SW_A7 +/* + * Define software copies of the supervisor and user stack pointers. + */ +.bss +sw_ksp: +.long 0 +sw_usp: +.long 0 +#endif /* CONFIG_COLDFIRE_SW_A7 */ + +.text + +.globl system_call +.globl resume +.globl ret_from_exception +.globl ret_from_signal +.globl sys_call_table +.globl inthandler +.globl fasthandler + +enosys: + mov.l #sys_ni_syscall,%d3 + bra 1f + +ENTRY(system_call) + SAVE_ALL + move #0x2000,%sr /* enable intrs again */ + + cmpl #NR_syscalls,%d0 + jcc enosys + lea sys_call_table,%a0 + lsll #2,%d0 /* movel %a0@(%d0:l:4),%d3 */ + movel %a0@(%d0),%d3 + jeq enosys + +1: + movel %sp,%d2 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d2 /* at start of kernel stack */ + movel %d2,%a0 + movel %a0@,%a1 /* save top of frame */ + movel %sp,%a1@(TASK_THREAD+THREAD_ESP0) + btst #(TIF_SYSCALL_TRACE%8),%a0@(TI_FLAGS+(31-TIF_SYSCALL_TRACE)/8) + bnes 1f + + movel %d3,%a0 + jbsr %a0@ + movel %d0,%sp@(PT_OFF_D0) /* save the return value */ + jra ret_from_exception +1: + movel #-ENOSYS,%d2 /* strace needs -ENOSYS in PT_OFF_D0 */ + movel %d2,PT_OFF_D0(%sp) /* on syscall entry */ + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace_enter + RESTORE_SWITCH_STACK + addql #4,%sp + movel %d3,%a0 + jbsr %a0@ + movel %d0,%sp@(PT_OFF_D0) /* save the return value */ + subql #4,%sp /* dummy return address */ + SAVE_SWITCH_STACK + jbsr syscall_trace_leave + +ret_from_signal: + RESTORE_SWITCH_STACK + addql #4,%sp + +ret_from_exception: + move #0x2700,%sr /* disable intrs */ + btst #5,%sp@(PT_OFF_SR) /* check if returning to kernel */ + jeq Luser_return /* if so, skip resched, signals */ + +#ifdef CONFIG_PREEMPT + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 /* at base of kernel stack */ + movel %d1,%a0 + movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + andl #(1<<TIF_NEED_RESCHED),%d1 + jeq Lkernel_return + + movel %a0@(TI_PREEMPTCOUNT),%d1 + cmpl #0,%d1 + jne Lkernel_return + + pea Lkernel_return + jmp preempt_schedule_irq /* preempt the kernel */ +#endif + +Lkernel_return: + moveml %sp@,%d1-%d5/%a0-%a2 + lea %sp@(32),%sp /* space for 8 regs */ + movel %sp@+,%d0 + addql #4,%sp /* orig d0 */ + addl %sp@+,%sp /* stk adj */ + rte + +Luser_return: + movel %sp,%d1 /* get thread_info pointer */ + andl #-THREAD_SIZE,%d1 /* at base of kernel stack */ + movel %d1,%a0 + movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + jne Lwork_to_do /* still work to do */ + +Lreturn: + RESTORE_USER + +Lwork_to_do: + movel %a0@(TI_FLAGS),%d1 /* get thread_info->flags */ + move #0x2000,%sr /* enable intrs again */ + btst #TIF_NEED_RESCHED,%d1 + jne reschedule + + /* GERG: do we need something here for TRACEing?? */ + +Lsignal_return: + subql #4,%sp /* dummy return address */ + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jsr do_signal + addql #4,%sp + RESTORE_SWITCH_STACK + addql #4,%sp + jmp Luser_return + +/* + * This is the generic interrupt handler (for all hardware interrupt + * sources). Calls upto high level code to do all the work. + */ +ENTRY(inthandler) + SAVE_ALL + moveq #-1,%d0 + movel %d0,%sp@(PT_OFF_ORIG_D0) + + movew %sp@(PT_OFF_FORMATVEC),%d0 /* put exception # in d0 */ + andl #0x03fc,%d0 /* mask out vector only */ + + movel %sp,%sp@- /* push regs arg */ + lsrl #2,%d0 /* calculate real vector # */ + movel %d0,%sp@- /* push vector number */ + jbsr do_IRQ /* call high level irq handler */ + lea %sp@(8),%sp /* pop args off stack */ + + bra ret_from_exception + +/* + * Beware - when entering resume, prev (the current task) is + * in a0, next (the new task) is in a1,so don't change these + * registers until their contents are no longer needed. + * This is always called in supervisor mode, so don't bother to save + * and restore sr; user's process sr is actually in the stack. + */ +ENTRY(resume) + movel %a0, %d1 /* get prev thread in d1 */ + RDUSP + movel %a2,%a0@(TASK_THREAD+THREAD_USP) + + SAVE_SWITCH_STACK + movel %sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack pointer */ + movel %a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new thread stack */ + RESTORE_SWITCH_STACK + + movel %a1@(TASK_THREAD+THREAD_USP),%a0 /* restore thread user stack */ + WRUSP + rts diff --git a/arch/m68k/platform/coldfire/gpio.c b/arch/m68k/platform/coldfire/gpio.c new file mode 100644 index 0000000..ff004579 --- /dev/null +++ b/arch/m68k/platform/coldfire/gpio.c @@ -0,0 +1,127 @@ +/* + * Coldfire generic GPIO support. + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/sysdev.h> + +#include <asm/gpio.h> +#include <asm/pinmux.h> +#include <asm/mcfgpio.h> + +#define MCF_CHIP(chip) container_of(chip, struct mcf_gpio_chip, gpio_chip) + +int mcf_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + unsigned long flags; + MCFGPIO_PORTTYPE dir; + struct mcf_gpio_chip *mcf_chip = MCF_CHIP(chip); + + local_irq_save(flags); + dir = mcfgpio_read(mcf_chip->pddr); + dir &= ~mcfgpio_bit(chip->base + offset); + mcfgpio_write(dir, mcf_chip->pddr); + local_irq_restore(flags); + + return 0; +} + +int mcf_gpio_get_value(struct gpio_chip *chip, unsigned offset) +{ + struct mcf_gpio_chip *mcf_chip = MCF_CHIP(chip); + + return mcfgpio_read(mcf_chip->ppdr) & mcfgpio_bit(chip->base + offset); +} + +int mcf_gpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + unsigned long flags; + MCFGPIO_PORTTYPE data; + struct mcf_gpio_chip *mcf_chip = MCF_CHIP(chip); + + local_irq_save(flags); + /* write the value to the output latch */ + data = mcfgpio_read(mcf_chip->podr); + if (value) + data |= mcfgpio_bit(chip->base + offset); + else + data &= ~mcfgpio_bit(chip->base + offset); + mcfgpio_write(data, mcf_chip->podr); + + /* now set the direction to output */ + data = mcfgpio_read(mcf_chip->pddr); + data |= mcfgpio_bit(chip->base + offset); + mcfgpio_write(data, mcf_chip->pddr); + local_irq_restore(flags); + + return 0; +} + +void mcf_gpio_set_value(struct gpio_chip *chip, unsigned offset, int value) +{ + struct mcf_gpio_chip *mcf_chip = MCF_CHIP(chip); + + unsigned long flags; + MCFGPIO_PORTTYPE data; + + local_irq_save(flags); + data = mcfgpio_read(mcf_chip->podr); + if (value) + data |= mcfgpio_bit(chip->base + offset); + else + data &= ~mcfgpio_bit(chip->base + offset); + mcfgpio_write(data, mcf_chip->podr); + local_irq_restore(flags); +} + +void mcf_gpio_set_value_fast(struct gpio_chip *chip, unsigned offset, int value) +{ + struct mcf_gpio_chip *mcf_chip = MCF_CHIP(chip); + + if (value) + mcfgpio_write(mcfgpio_bit(chip->base + offset), mcf_chip->setr); + else + mcfgpio_write(~mcfgpio_bit(chip->base + offset), mcf_chip->clrr); +} + +int mcf_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + struct mcf_gpio_chip *mcf_chip = MCF_CHIP(chip); + + return mcf_chip->gpio_to_pinmux ? + mcf_pinmux_request(mcf_chip->gpio_to_pinmux[offset], 0) : 0; +} + +void mcf_gpio_free(struct gpio_chip *chip, unsigned offset) +{ + struct mcf_gpio_chip *mcf_chip = MCF_CHIP(chip); + + mcf_gpio_direction_input(chip, offset); + + if (mcf_chip->gpio_to_pinmux) + mcf_pinmux_release(mcf_chip->gpio_to_pinmux[offset], 0); +} + +struct sysdev_class mcf_gpio_sysclass = { + .name = "gpio", +}; + +static int __init mcf_gpio_sysinit(void) +{ + return sysdev_class_register(&mcf_gpio_sysclass); +} + +core_initcall(mcf_gpio_sysinit); diff --git a/arch/m68k/platform/coldfire/head.S b/arch/m68k/platform/coldfire/head.S new file mode 100644 index 0000000..129bff49 --- /dev/null +++ b/arch/m68k/platform/coldfire/head.S @@ -0,0 +1,250 @@ +/*****************************************************************************/ + +/* + * head.S -- common startup code for ColdFire CPUs. + * + * (C) Copyright 1999-2010, Greg Ungerer <gerg@snapgear.com>. + */ + +/*****************************************************************************/ + +#include <linux/sys.h> +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/asm-offsets.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/thread_info.h> + +/*****************************************************************************/ + +/* + * If we don't have a fixed memory size, then lets build in code + * to auto detect the DRAM size. Obviously this is the prefered + * method, and should work for most boards. It won't work for those + * that do not have their RAM starting at address 0, and it only + * works on SDRAM (not boards fitted with SRAM). + */ +#if CONFIG_RAMSIZE != 0 +.macro GET_MEM_SIZE + movel #CONFIG_RAMSIZE,%d0 /* hard coded memory size */ +.endm + +#elif defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \ + defined(CONFIG_M5249) || defined(CONFIG_M527x) || \ + defined(CONFIG_M528x) || defined(CONFIG_M5307) || \ + defined(CONFIG_M5407) +/* + * Not all these devices have exactly the same DRAM controller, + * but the DCMR register is virtually identical - give or take + * a couple of bits. The only exception is the 5272 devices, their + * DRAM controller is quite different. + */ +.macro GET_MEM_SIZE + movel MCFSIM_DMR0,%d0 /* get mask for 1st bank */ + btst #0,%d0 /* check if region enabled */ + beq 1f + andl #0xfffc0000,%d0 + beq 1f + addl #0x00040000,%d0 /* convert mask to size */ +1: + movel MCFSIM_DMR1,%d1 /* get mask for 2nd bank */ + btst #0,%d1 /* check if region enabled */ + beq 2f + andl #0xfffc0000,%d1 + beq 2f + addl #0x00040000,%d1 + addl %d1,%d0 /* total mem size in d0 */ +2: +.endm + +#elif defined(CONFIG_M5272) +.macro GET_MEM_SIZE + movel MCF_MBAR+MCFSIM_CSOR7,%d0 /* get SDRAM address mask */ + andil #0xfffff000,%d0 /* mask out chip select options */ + negl %d0 /* negate bits */ +.endm + +#elif defined(CONFIG_M520x) +.macro GET_MEM_SIZE + clrl %d0 + movel MCFSIM_SDCS0, %d2 /* Get SDRAM chip select 0 config */ + andl #0x1f, %d2 /* Get only the chip select size */ + beq 3f /* Check if it is enabled */ + addql #1, %d2 /* Form exponent */ + moveql #1, %d0 + lsll %d2, %d0 /* 2 ^ exponent */ +3: + movel MCFSIM_SDCS1, %d2 /* Get SDRAM chip select 1 config */ + andl #0x1f, %d2 /* Get only the chip select size */ + beq 4f /* Check if it is enabled */ + addql #1, %d2 /* Form exponent */ + moveql #1, %d1 + lsll %d2, %d1 /* 2 ^ exponent */ + addl %d1, %d0 /* Total size of SDRAM in d0 */ +4: +.endm + +#else +#error "ERROR: I don't know how to probe your boards memory size?" +#endif + +/*****************************************************************************/ + +/* + * Boards and platforms can do specific early hardware setup if + * they need to. Most don't need this, define away if not required. + */ +#ifndef PLATFORM_SETUP +#define PLATFORM_SETUP +#endif + +/*****************************************************************************/ + +.global _start +.global _rambase +.global _ramvec +.global _ramstart +.global _ramend +#if defined(CONFIG_UBOOT) +.global _init_sp +#endif + +/*****************************************************************************/ + +.data + +/* + * During startup we store away the RAM setup. These are not in the + * bss, since their values are determined and written before the bss + * has been cleared. + */ +_rambase: +.long 0 +_ramvec: +.long 0 +_ramstart: +.long 0 +_ramend: +.long 0 +#if defined(CONFIG_UBOOT) +_init_sp: +.long 0 +#endif + +/*****************************************************************************/ + +__HEAD + +/* + * This is the codes first entry point. This is where it all + * begins... + */ + +_start: + nop /* filler */ + movew #0x2700, %sr /* no interrupts */ +#if defined(CONFIG_UBOOT) + movel %sp,_init_sp /* save initial stack pointer */ +#endif + + /* + * Do any platform or board specific setup now. Most boards + * don't need anything. Those exceptions are define this in + * their board specific includes. + */ + PLATFORM_SETUP + + /* + * Create basic memory configuration. Set VBR accordingly, + * and size memory. + */ + movel #CONFIG_VECTORBASE,%a7 + movec %a7,%VBR /* set vectors addr */ + movel %a7,_ramvec + + movel #CONFIG_RAMBASE,%a7 /* mark the base of RAM */ + movel %a7,_rambase + + GET_MEM_SIZE /* macro code determines size */ + addl %a7,%d0 + movel %d0,_ramend /* set end ram addr */ + + /* + * Now that we know what the memory is, lets enable cache + * and get things moving. This is Coldfire CPU specific. Not + * all version cores have identical cache register setup. But + * it is very similar. Define the exact settings in the headers + * then the code here is the same for all. + */ + movel #CACHE_INIT,%d0 /* invalidate whole cache */ + movec %d0,%CACR + nop + movel #ACR0_MODE,%d0 /* set RAM region for caching */ + movec %d0,%ACR0 + movel #ACR1_MODE,%d0 /* anything else to cache? */ + movec %d0,%ACR1 +#ifdef ACR2_MODE + movel #ACR2_MODE,%d0 + movec %d0,%ACR2 + movel #ACR3_MODE,%d0 + movec %d0,%ACR3 +#endif + movel #CACHE_MODE,%d0 /* enable cache */ + movec %d0,%CACR + nop + +#ifdef CONFIG_ROMFS_FS + /* + * Move ROM filesystem above bss :-) + */ + lea _sbss,%a0 /* get start of bss */ + lea _ebss,%a1 /* set up destination */ + movel %a0,%a2 /* copy of bss start */ + + movel 8(%a0),%d0 /* get size of ROMFS */ + addql #8,%d0 /* allow for rounding */ + andl #0xfffffffc, %d0 /* whole words */ + + addl %d0,%a0 /* copy from end */ + addl %d0,%a1 /* copy from end */ + movel %a1,_ramstart /* set start of ram */ + +_copy_romfs: + movel -(%a0),%d0 /* copy dword */ + movel %d0,-(%a1) + cmpl %a0,%a2 /* check if at end */ + bne _copy_romfs + +#else /* CONFIG_ROMFS_FS */ + lea _ebss,%a1 + movel %a1,_ramstart +#endif /* CONFIG_ROMFS_FS */ + + + /* + * Zero out the bss region. + */ + lea _sbss,%a0 /* get start of bss */ + lea _ebss,%a1 /* get end of bss */ + clrl %d0 /* set value */ +_clear_bss: + movel %d0,(%a0)+ /* clear each word */ + cmpl %a0,%a1 /* check if at end */ + bne _clear_bss + + /* + * Load the current task pointer and stack. + */ + lea init_thread_union,%a0 + lea THREAD_SIZE(%a0),%sp + + /* + * Assember start up done, start code proper. + */ + jsr start_kernel /* start Linux kernel */ + +_exit: + jmp _exit /* should never get here */ + +/*****************************************************************************/ diff --git a/arch/m68k/platform/coldfire/intc-2.c b/arch/m68k/platform/coldfire/intc-2.c new file mode 100644 index 0000000..2cbfbf0 --- /dev/null +++ b/arch/m68k/platform/coldfire/intc-2.c @@ -0,0 +1,214 @@ +/* + * intc-2.c + * + * General interrupt controller code for the many ColdFire cores that use + * interrupt controllers with 63 interrupt sources, organized as 56 fully- + * programmable + 7 fixed-level interrupt sources. This includes the 523x + * family, the 5270, 5271, 5274, 5275, and the 528x family which have two such + * controllers, and the 547x and 548x families which have only one of them. + * + * The external 7 fixed interrupts are part the the Edge Port unit of these + * ColdFire parts. They can be configured as level or edge triggered. + * + * (C) Copyright 2009-2011, Greg Ungerer <gerg@snapgear.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/traps.h> + +/* + * Bit definitions for the ICR family of registers. + */ +#define MCFSIM_ICR_LEVEL(l) ((l)<<3) /* Level l intr */ +#define MCFSIM_ICR_PRI(p) (p) /* Priority p intr */ + +/* + * The EDGE Port interrupts are the fixed 7 external interrupts. + * They need some special treatment, for example they need to be acked. + */ +#define EINT0 64 /* Is not actually used, but spot reserved for it */ +#define EINT1 65 /* EDGE Port interrupt 1 */ +#define EINT7 71 /* EDGE Port interrupt 7 */ + +#ifdef MCFICM_INTC1 +#define NR_VECS 128 +#else +#define NR_VECS 64 +#endif + +static void intc_irq_mask(struct irq_data *d) +{ + unsigned int irq = d->irq - MCFINT_VECBASE; + unsigned long imraddr; + u32 val, imrbit; + +#ifdef MCFICM_INTC1 + imraddr = (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; +#else + imraddr = MCFICM_INTC0; +#endif + imraddr += (irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL; + imrbit = 0x1 << (irq & 0x1f); + + val = __raw_readl(imraddr); + __raw_writel(val | imrbit, imraddr); +} + +static void intc_irq_unmask(struct irq_data *d) +{ + unsigned int irq = d->irq - MCFINT_VECBASE; + unsigned long imraddr; + u32 val, imrbit; + +#ifdef MCFICM_INTC1 + imraddr = (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; +#else + imraddr = MCFICM_INTC0; +#endif + imraddr += ((irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL); + imrbit = 0x1 << (irq & 0x1f); + + /* Don't set the "maskall" bit! */ + if ((irq & 0x20) == 0) + imrbit |= 0x1; + + val = __raw_readl(imraddr); + __raw_writel(val & ~imrbit, imraddr); +} + +/* + * Only the external (or EDGE Port) interrupts need to be acknowledged + * here, as part of the IRQ handler. They only really need to be ack'ed + * if they are in edge triggered mode, but there is no harm in doing it + * for all types. + */ +static void intc_irq_ack(struct irq_data *d) +{ + unsigned int irq = d->irq; + + __raw_writeb(0x1 << (irq - EINT0), MCFEPORT_EPFR); +} + +/* + * Each vector needs a unique priority and level associated with it. + * We don't really care so much what they are, we don't rely on the + * traditional priority interrupt scheme of the m68k/ColdFire. This + * only needs to be set once for an interrupt, and we will never change + * these values once we have set them. + */ +static u8 intc_intpri = MCFSIM_ICR_LEVEL(6) | MCFSIM_ICR_PRI(6); + +static unsigned int intc_irq_startup(struct irq_data *d) +{ + unsigned int irq = d->irq - MCFINT_VECBASE; + unsigned long icraddr; + +#ifdef MCFICM_INTC1 + icraddr = (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0; +#else + icraddr = MCFICM_INTC0; +#endif + icraddr += MCFINTC_ICR0 + (irq & 0x3f); + if (__raw_readb(icraddr) == 0) + __raw_writeb(intc_intpri--, icraddr); + + irq = d->irq; + if ((irq >= EINT1) && (irq <= EINT7)) { + u8 v; + + irq -= EINT0; + + /* Set EPORT line as input */ + v = __raw_readb(MCFEPORT_EPDDR); + __raw_writeb(v & ~(0x1 << irq), MCFEPORT_EPDDR); + + /* Set EPORT line as interrupt source */ + v = __raw_readb(MCFEPORT_EPIER); + __raw_writeb(v | (0x1 << irq), MCFEPORT_EPIER); + } + + intc_irq_unmask(d); + return 0; +} + +static int intc_irq_set_type(struct irq_data *d, unsigned int type) +{ + unsigned int irq = d->irq; + u16 pa, tb; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + tb = 0x1; + break; + case IRQ_TYPE_EDGE_FALLING: + tb = 0x2; + break; + case IRQ_TYPE_EDGE_BOTH: + tb = 0x3; + break; + default: + /* Level triggered */ + tb = 0; + break; + } + + if (tb) + set_irq_handler(irq, handle_edge_irq); + + irq -= EINT0; + pa = __raw_readw(MCFEPORT_EPPAR); + pa = (pa & ~(0x3 << (irq * 2))) | (tb << (irq * 2)); + __raw_writew(pa, MCFEPORT_EPPAR); + + return 0; +} + +static struct irq_chip intc_irq_chip = { + .name = "CF-INTC", + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, +}; + +static struct irq_chip intc_irq_chip_edge_port = { + .name = "CF-INTC-EP", + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_ack = intc_irq_ack, + .irq_set_type = intc_irq_set_type, +}; + +void __init init_IRQ(void) +{ + int irq; + + init_vectors(); + + /* Mask all interrupt sources */ + __raw_writel(0x1, MCFICM_INTC0 + MCFINTC_IMRL); +#ifdef MCFICM_INTC1 + __raw_writel(0x1, MCFICM_INTC1 + MCFINTC_IMRL); +#endif + + for (irq = MCFINT_VECBASE; (irq < MCFINT_VECBASE + NR_VECS); irq++) { + if ((irq >= EINT1) && (irq <=EINT7)) + set_irq_chip(irq, &intc_irq_chip_edge_port); + else + set_irq_chip(irq, &intc_irq_chip); + set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH); + set_irq_handler(irq, handle_level_irq); + } +} + diff --git a/arch/m68k/platform/coldfire/intc-simr.c b/arch/m68k/platform/coldfire/intc-simr.c new file mode 100644 index 0000000..e642b24a --- /dev/null +++ b/arch/m68k/platform/coldfire/intc-simr.c @@ -0,0 +1,191 @@ +/* + * intc-simr.c + * + * Interrupt controller code for the ColdFire 5208, 5207 & 532x parts. + * + * (C) Copyright 2009-2011, Greg Ungerer <gerg@snapgear.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/traps.h> + +/* + * The EDGE Port interrupts are the fixed 7 external interrupts. + * They need some special treatment, for example they need to be acked. + */ +#ifdef CONFIG_M520x +/* + * The 520x parts only support a limited range of these external + * interrupts, only 1, 4 and 7 (as interrupts 65, 66 and 67). + */ +#define EINT0 64 /* Is not actually used, but spot reserved for it */ +#define EINT1 65 /* EDGE Port interrupt 1 */ +#define EINT4 66 /* EDGE Port interrupt 4 */ +#define EINT7 67 /* EDGE Port interrupt 7 */ + +static unsigned int irqebitmap[] = { 0, 1, 4, 7 }; +static unsigned int inline irq2ebit(unsigned int irq) +{ + return irqebitmap[irq - EINT0]; +} + +#else + +/* + * Most of the ColdFire parts with the EDGE Port module just have + * a strait direct mapping of the 7 external interrupts. Although + * there is a bit reserved for 0, it is not used. + */ +#define EINT0 64 /* Is not actually used, but spot reserved for it */ +#define EINT1 65 /* EDGE Port interrupt 1 */ +#define EINT7 71 /* EDGE Port interrupt 7 */ + +static unsigned int inline irq2ebit(unsigned int irq) +{ + return irq - EINT0; +} + +#endif + +/* + * There maybe one or two interrupt control units, each has 64 + * interrupts. If there is no second unit then MCFINTC1_* defines + * will be 0 (and code for them optimized away). + */ + +static void intc_irq_mask(struct irq_data *d) +{ + unsigned int irq = d->irq - MCFINT_VECBASE; + + if (MCFINTC1_SIMR && (irq > 64)) + __raw_writeb(irq - 64, MCFINTC1_SIMR); + else + __raw_writeb(irq, MCFINTC0_SIMR); +} + +static void intc_irq_unmask(struct irq_data *d) +{ + unsigned int irq = d->irq - MCFINT_VECBASE; + + if (MCFINTC1_CIMR && (irq > 64)) + __raw_writeb(irq - 64, MCFINTC1_CIMR); + else + __raw_writeb(irq, MCFINTC0_CIMR); +} + +static void intc_irq_ack(struct irq_data *d) +{ + unsigned int ebit = irq2ebit(d->irq); + + __raw_writeb(0x1 << ebit, MCFEPORT_EPFR); +} + +static unsigned int intc_irq_startup(struct irq_data *d) +{ + unsigned int irq = d->irq; + + if ((irq >= EINT1) && (irq <= EINT7)) { + unsigned int ebit = irq2ebit(irq); + u8 v; + + /* Set EPORT line as input */ + v = __raw_readb(MCFEPORT_EPDDR); + __raw_writeb(v & ~(0x1 << ebit), MCFEPORT_EPDDR); + + /* Set EPORT line as interrupt source */ + v = __raw_readb(MCFEPORT_EPIER); + __raw_writeb(v | (0x1 << ebit), MCFEPORT_EPIER); + } + + irq -= MCFINT_VECBASE; + if (MCFINTC1_ICR0 && (irq > 64)) + __raw_writeb(5, MCFINTC1_ICR0 + irq - 64); + else + __raw_writeb(5, MCFINTC0_ICR0 + irq); + + + intc_irq_unmask(d); + return 0; +} + +static int intc_irq_set_type(struct irq_data *d, unsigned int type) +{ + unsigned int ebit, irq = d->irq; + u16 pa, tb; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + tb = 0x1; + break; + case IRQ_TYPE_EDGE_FALLING: + tb = 0x2; + break; + case IRQ_TYPE_EDGE_BOTH: + tb = 0x3; + break; + default: + /* Level triggered */ + tb = 0; + break; + } + + if (tb) + set_irq_handler(irq, handle_edge_irq); + + ebit = irq2ebit(irq) * 2; + pa = __raw_readw(MCFEPORT_EPPAR); + pa = (pa & ~(0x3 << ebit)) | (tb << ebit); + __raw_writew(pa, MCFEPORT_EPPAR); + + return 0; +} + +static struct irq_chip intc_irq_chip = { + .name = "CF-INTC", + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, +}; + +static struct irq_chip intc_irq_chip_edge_port = { + .name = "CF-INTC-EP", + .irq_startup = intc_irq_startup, + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_ack = intc_irq_ack, + .irq_set_type = intc_irq_set_type, +}; + +void __init init_IRQ(void) +{ + int irq, eirq; + + init_vectors(); + + /* Mask all interrupt sources */ + __raw_writeb(0xff, MCFINTC0_SIMR); + if (MCFINTC1_SIMR) + __raw_writeb(0xff, MCFINTC1_SIMR); + + eirq = MCFINT_VECBASE + 64 + (MCFINTC1_ICR0 ? 64 : 0); + for (irq = MCFINT_VECBASE; (irq < eirq); irq++) { + if ((irq >= EINT1) && (irq <= EINT7)) + set_irq_chip(irq, &intc_irq_chip_edge_port); + else + set_irq_chip(irq, &intc_irq_chip); + set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH); + set_irq_handler(irq, handle_level_irq); + } +} + diff --git a/arch/m68k/platform/coldfire/intc.c b/arch/m68k/platform/coldfire/intc.c new file mode 100644 index 0000000..d648081 --- /dev/null +++ b/arch/m68k/platform/coldfire/intc.c @@ -0,0 +1,151 @@ +/* + * intc.c -- support for the old ColdFire interrupt controller + * + * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <asm/traps.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> + +/* + * The mapping of irq number to a mask register bit is not one-to-one. + * The irq numbers are either based on "level" of interrupt or fixed + * for an autovector-able interrupt. So we keep a local data structure + * that maps from irq to mask register. Not all interrupts will have + * an IMR bit. + */ +unsigned char mcf_irq2imr[NR_IRQS]; + +/* + * Define the miniumun and maximum external interrupt numbers. + * This is also used as the "level" interrupt numbers. + */ +#define EIRQ1 25 +#define EIRQ7 31 + +/* + * In the early version 2 core ColdFire parts the IMR register was 16 bits + * in size. Version 3 (and later version 2) core parts have a 32 bit + * sized IMR register. Provide some size independant methods to access the + * IMR register. + */ +#ifdef MCFSIM_IMR_IS_16BITS + +void mcf_setimr(int index) +{ + u16 imr; + imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); + __raw_writew(imr | (0x1 << index), MCF_MBAR + MCFSIM_IMR); +} + +void mcf_clrimr(int index) +{ + u16 imr; + imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); + __raw_writew(imr & ~(0x1 << index), MCF_MBAR + MCFSIM_IMR); +} + +void mcf_maskimr(unsigned int mask) +{ + u16 imr; + imr = __raw_readw(MCF_MBAR + MCFSIM_IMR); + imr |= mask; + __raw_writew(imr, MCF_MBAR + MCFSIM_IMR); +} + +#else + +void mcf_setimr(int index) +{ + u32 imr; + imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); + __raw_writel(imr | (0x1 << index), MCF_MBAR + MCFSIM_IMR); +} + +void mcf_clrimr(int index) +{ + u32 imr; + imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); + __raw_writel(imr & ~(0x1 << index), MCF_MBAR + MCFSIM_IMR); +} + +void mcf_maskimr(unsigned int mask) +{ + u32 imr; + imr = __raw_readl(MCF_MBAR + MCFSIM_IMR); + imr |= mask; + __raw_writel(imr, MCF_MBAR + MCFSIM_IMR); +} + +#endif + +/* + * Interrupts can be "vectored" on the ColdFire cores that support this old + * interrupt controller. That is, the device raising the interrupt can also + * supply the vector number to interrupt through. The AVR register of the + * interrupt controller enables or disables this for each external interrupt, + * so provide generic support for this. Setting this up is out-of-band for + * the interrupt system API's, and needs to be done by the driver that + * supports this device. Very few devices actually use this. + */ +void mcf_autovector(int irq) +{ +#ifdef MCFSIM_AVR + if ((irq >= EIRQ1) && (irq <= EIRQ7)) { + u8 avec; + avec = __raw_readb(MCF_MBAR + MCFSIM_AVR); + avec |= (0x1 << (irq - EIRQ1 + 1)); + __raw_writeb(avec, MCF_MBAR + MCFSIM_AVR); + } +#endif +} + +static void intc_irq_mask(struct irq_data *d) +{ + if (mcf_irq2imr[d->irq]) + mcf_setimr(mcf_irq2imr[d->irq]); +} + +static void intc_irq_unmask(struct irq_data *d) +{ + if (mcf_irq2imr[d->irq]) + mcf_clrimr(mcf_irq2imr[d->irq]); +} + +static int intc_irq_set_type(struct irq_data *d, unsigned int type) +{ + return 0; +} + +static struct irq_chip intc_irq_chip = { + .name = "CF-INTC", + .irq_mask = intc_irq_mask, + .irq_unmask = intc_irq_unmask, + .irq_set_type = intc_irq_set_type, +}; + +void __init init_IRQ(void) +{ + int irq; + + init_vectors(); + mcf_maskimr(0xffffffff); + + for (irq = 0; (irq < NR_IRQS); irq++) { + set_irq_chip(irq, &intc_irq_chip); + set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH); + set_irq_handler(irq, handle_level_irq); + } +} + diff --git a/arch/m68k/platform/coldfire/pinmux.c b/arch/m68k/platform/coldfire/pinmux.c new file mode 100644 index 0000000..8c62b82 --- /dev/null +++ b/arch/m68k/platform/coldfire/pinmux.c @@ -0,0 +1,28 @@ +/* + * Coldfire generic GPIO pinmux support. + * + * (C) Copyright 2009, Steven King <sfking@fdwdc.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> + +#include <asm/pinmux.h> + +int mcf_pinmux_request(unsigned pinmux, unsigned func) +{ + return 0; +} + +void mcf_pinmux_release(unsigned pinmux, unsigned func) +{ +} diff --git a/arch/m68k/platform/coldfire/pit.c b/arch/m68k/platform/coldfire/pit.c new file mode 100644 index 0000000..c2b9809 --- /dev/null +++ b/arch/m68k/platform/coldfire/pit.c @@ -0,0 +1,169 @@ +/***************************************************************************/ + +/* + * pit.c -- Freescale ColdFire PIT timer. Currently this type of + * hardware timer only exists in the Freescale ColdFire + * 5270/5271, 5282 and 5208 CPUs. No doubt newer ColdFire + * family members will probably use it too. + * + * Copyright (C) 1999-2008, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/param.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/clockchips.h> +#include <asm/machdep.h> +#include <asm/io.h> +#include <asm/coldfire.h> +#include <asm/mcfpit.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ + +/* + * By default use timer1 as the system clock timer. + */ +#define FREQ ((MCF_CLK / 2) / 64) +#define TA(a) (MCFPIT_BASE1 + (a)) +#define PIT_CYCLES_PER_JIFFY (FREQ / HZ) + +static u32 pit_cnt; + +/* + * Initialize the PIT timer. + * + * This is also called after resume to bring the PIT into operation again. + */ + +static void init_cf_pit_timer(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + + __raw_writew(MCFPIT_PCSR_DISABLE, TA(MCFPIT_PCSR)); + __raw_writew(PIT_CYCLES_PER_JIFFY, TA(MCFPIT_PMR)); + __raw_writew(MCFPIT_PCSR_EN | MCFPIT_PCSR_PIE | \ + MCFPIT_PCSR_OVW | MCFPIT_PCSR_RLD | \ + MCFPIT_PCSR_CLK64, TA(MCFPIT_PCSR)); + break; + + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_UNUSED: + + __raw_writew(MCFPIT_PCSR_DISABLE, TA(MCFPIT_PCSR)); + break; + + case CLOCK_EVT_MODE_ONESHOT: + + __raw_writew(MCFPIT_PCSR_DISABLE, TA(MCFPIT_PCSR)); + __raw_writew(MCFPIT_PCSR_EN | MCFPIT_PCSR_PIE | \ + MCFPIT_PCSR_OVW | MCFPIT_PCSR_CLK64, \ + TA(MCFPIT_PCSR)); + break; + + case CLOCK_EVT_MODE_RESUME: + /* Nothing to do here */ + break; + } +} + +/* + * Program the next event in oneshot mode + * + * Delta is given in PIT ticks + */ +static int cf_pit_next_event(unsigned long delta, + struct clock_event_device *evt) +{ + __raw_writew(delta, TA(MCFPIT_PMR)); + return 0; +} + +struct clock_event_device cf_pit_clockevent = { + .name = "pit", + .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, + .set_mode = init_cf_pit_timer, + .set_next_event = cf_pit_next_event, + .shift = 32, + .irq = MCFINT_VECBASE + MCFINT_PIT1, +}; + + + +/***************************************************************************/ + +static irqreturn_t pit_tick(int irq, void *dummy) +{ + struct clock_event_device *evt = &cf_pit_clockevent; + u16 pcsr; + + /* Reset the ColdFire timer */ + pcsr = __raw_readw(TA(MCFPIT_PCSR)); + __raw_writew(pcsr | MCFPIT_PCSR_PIF, TA(MCFPIT_PCSR)); + + pit_cnt += PIT_CYCLES_PER_JIFFY; + evt->event_handler(evt); + return IRQ_HANDLED; +} + +/***************************************************************************/ + +static struct irqaction pit_irq = { + .name = "timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = pit_tick, +}; + +/***************************************************************************/ + +static cycle_t pit_read_clk(struct clocksource *cs) +{ + unsigned long flags; + u32 cycles; + u16 pcntr; + + local_irq_save(flags); + pcntr = __raw_readw(TA(MCFPIT_PCNTR)); + cycles = pit_cnt; + local_irq_restore(flags); + + return cycles + PIT_CYCLES_PER_JIFFY - pcntr; +} + +/***************************************************************************/ + +static struct clocksource pit_clk = { + .name = "pit", + .rating = 100, + .read = pit_read_clk, + .shift = 20, + .mask = CLOCKSOURCE_MASK(32), +}; + +/***************************************************************************/ + +void hw_timer_init(void) +{ + cf_pit_clockevent.cpumask = cpumask_of(smp_processor_id()); + cf_pit_clockevent.mult = div_sc(FREQ, NSEC_PER_SEC, 32); + cf_pit_clockevent.max_delta_ns = + clockevent_delta2ns(0xFFFF, &cf_pit_clockevent); + cf_pit_clockevent.min_delta_ns = + clockevent_delta2ns(0x3f, &cf_pit_clockevent); + clockevents_register_device(&cf_pit_clockevent); + + setup_irq(MCFINT_VECBASE + MCFINT_PIT1, &pit_irq); + + pit_clk.mult = clocksource_hz2mult(FREQ, pit_clk.shift); + clocksource_register(&pit_clk); +} + +/***************************************************************************/ diff --git a/arch/m68k/platform/coldfire/sltimers.c b/arch/m68k/platform/coldfire/sltimers.c new file mode 100644 index 0000000..0a1b937 --- /dev/null +++ b/arch/m68k/platform/coldfire/sltimers.c @@ -0,0 +1,145 @@ +/***************************************************************************/ + +/* + * sltimers.c -- generic ColdFire slice timer support. + * + * Copyright (C) 2009-2010, Philippe De Muyter <phdm@macqel.be> + * based on + * timers.c -- generic ColdFire hardware timer support. + * Copyright (C) 1999-2008, Greg Ungerer <gerg@snapgear.com> + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/profile.h> +#include <linux/clocksource.h> +#include <asm/io.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfslt.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ + +#ifdef CONFIG_HIGHPROFILE + +/* + * By default use Slice Timer 1 as the profiler clock timer. + */ +#define PA(a) (MCF_MBAR + MCFSLT_TIMER1 + (a)) + +/* + * Choose a reasonably fast profile timer. Make it an odd value to + * try and get good coverage of kernel operations. + */ +#define PROFILEHZ 1013 + +irqreturn_t mcfslt_profile_tick(int irq, void *dummy) +{ + /* Reset Slice Timer 1 */ + __raw_writel(MCFSLT_SSR_BE | MCFSLT_SSR_TE, PA(MCFSLT_SSR)); + if (current->pid) + profile_tick(CPU_PROFILING); + return IRQ_HANDLED; +} + +static struct irqaction mcfslt_profile_irq = { + .name = "profile timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = mcfslt_profile_tick, +}; + +void mcfslt_profile_init(void) +{ + printk(KERN_INFO "PROFILE: lodging TIMER 1 @ %dHz as profile timer\n", + PROFILEHZ); + + setup_irq(MCF_IRQ_PROFILER, &mcfslt_profile_irq); + + /* Set up TIMER 2 as high speed profile clock */ + __raw_writel(MCF_BUSCLK / PROFILEHZ - 1, PA(MCFSLT_STCNT)); + __raw_writel(MCFSLT_SCR_RUN | MCFSLT_SCR_IEN | MCFSLT_SCR_TEN, + PA(MCFSLT_SCR)); + +} + +#endif /* CONFIG_HIGHPROFILE */ + +/***************************************************************************/ + +/* + * By default use Slice Timer 0 as the system clock timer. + */ +#define TA(a) (MCF_MBAR + MCFSLT_TIMER0 + (a)) + +static u32 mcfslt_cycles_per_jiffy; +static u32 mcfslt_cnt; + +static irqreturn_t mcfslt_tick(int irq, void *dummy) +{ + /* Reset Slice Timer 0 */ + __raw_writel(MCFSLT_SSR_BE | MCFSLT_SSR_TE, TA(MCFSLT_SSR)); + mcfslt_cnt += mcfslt_cycles_per_jiffy; + return arch_timer_interrupt(irq, dummy); +} + +static struct irqaction mcfslt_timer_irq = { + .name = "timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = mcfslt_tick, +}; + +static cycle_t mcfslt_read_clk(struct clocksource *cs) +{ + unsigned long flags; + u32 cycles; + u16 scnt; + + local_irq_save(flags); + scnt = __raw_readl(TA(MCFSLT_SCNT)); + cycles = mcfslt_cnt; + local_irq_restore(flags); + + /* substract because slice timers count down */ + return cycles - scnt; +} + +static struct clocksource mcfslt_clk = { + .name = "slt", + .rating = 250, + .read = mcfslt_read_clk, + .shift = 20, + .mask = CLOCKSOURCE_MASK(32), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +void hw_timer_init(void) +{ + mcfslt_cycles_per_jiffy = MCF_BUSCLK / HZ; + /* + * The coldfire slice timer (SLT) runs from STCNT to 0 included, + * then STCNT again and so on. It counts thus actually + * STCNT + 1 steps for 1 tick, not STCNT. So if you want + * n cycles, initialize STCNT with n - 1. + */ + __raw_writel(mcfslt_cycles_per_jiffy - 1, TA(MCFSLT_STCNT)); + __raw_writel(MCFSLT_SCR_RUN | MCFSLT_SCR_IEN | MCFSLT_SCR_TEN, + TA(MCFSLT_SCR)); + /* initialize mcfslt_cnt knowing that slice timers count down */ + mcfslt_cnt = mcfslt_cycles_per_jiffy; + + setup_irq(MCF_IRQ_TIMER, &mcfslt_timer_irq); + + mcfslt_clk.mult = clocksource_hz2mult(MCF_BUSCLK, mcfslt_clk.shift); + clocksource_register(&mcfslt_clk); + +#ifdef CONFIG_HIGHPROFILE + mcfslt_profile_init(); +#endif +} diff --git a/arch/m68k/platform/coldfire/timers.c b/arch/m68k/platform/coldfire/timers.c new file mode 100644 index 0000000..60242f6 --- /dev/null +++ b/arch/m68k/platform/coldfire/timers.c @@ -0,0 +1,174 @@ +/***************************************************************************/ + +/* + * timers.c -- generic ColdFire hardware timer support. + * + * Copyright (C) 1999-2008, Greg Ungerer <gerg@snapgear.com> + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/profile.h> +#include <linux/clocksource.h> +#include <asm/io.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcftimer.h> +#include <asm/mcfsim.h> + +/***************************************************************************/ + +/* + * By default use timer1 as the system clock timer. + */ +#define FREQ (MCF_BUSCLK / 16) +#define TA(a) (MCFTIMER_BASE1 + (a)) + +/* + * These provide the underlying interrupt vector support. + * Unfortunately it is a little different on each ColdFire. + */ +void coldfire_profile_init(void); + +#if defined(CONFIG_M532x) +#define __raw_readtrr __raw_readl +#define __raw_writetrr __raw_writel +#else +#define __raw_readtrr __raw_readw +#define __raw_writetrr __raw_writew +#endif + +static u32 mcftmr_cycles_per_jiffy; +static u32 mcftmr_cnt; + +/***************************************************************************/ + +static irqreturn_t mcftmr_tick(int irq, void *dummy) +{ + /* Reset the ColdFire timer */ + __raw_writeb(MCFTIMER_TER_CAP | MCFTIMER_TER_REF, TA(MCFTIMER_TER)); + + mcftmr_cnt += mcftmr_cycles_per_jiffy; + return arch_timer_interrupt(irq, dummy); +} + +/***************************************************************************/ + +static struct irqaction mcftmr_timer_irq = { + .name = "timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = mcftmr_tick, +}; + +/***************************************************************************/ + +static cycle_t mcftmr_read_clk(struct clocksource *cs) +{ + unsigned long flags; + u32 cycles; + u16 tcn; + + local_irq_save(flags); + tcn = __raw_readw(TA(MCFTIMER_TCN)); + cycles = mcftmr_cnt; + local_irq_restore(flags); + + return cycles + tcn; +} + +/***************************************************************************/ + +static struct clocksource mcftmr_clk = { + .name = "tmr", + .rating = 250, + .read = mcftmr_read_clk, + .shift = 20, + .mask = CLOCKSOURCE_MASK(32), + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +/***************************************************************************/ + +void hw_timer_init(void) +{ + __raw_writew(MCFTIMER_TMR_DISABLE, TA(MCFTIMER_TMR)); + mcftmr_cycles_per_jiffy = FREQ / HZ; + /* + * The coldfire timer runs from 0 to TRR included, then 0 + * again and so on. It counts thus actually TRR + 1 steps + * for 1 tick, not TRR. So if you want n cycles, + * initialize TRR with n - 1. + */ + __raw_writetrr(mcftmr_cycles_per_jiffy - 1, TA(MCFTIMER_TRR)); + __raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 | + MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, TA(MCFTIMER_TMR)); + + mcftmr_clk.mult = clocksource_hz2mult(FREQ, mcftmr_clk.shift); + clocksource_register(&mcftmr_clk); + + setup_irq(MCF_IRQ_TIMER, &mcftmr_timer_irq); + +#ifdef CONFIG_HIGHPROFILE + coldfire_profile_init(); +#endif +} + +/***************************************************************************/ +#ifdef CONFIG_HIGHPROFILE +/***************************************************************************/ + +/* + * By default use timer2 as the profiler clock timer. + */ +#define PA(a) (MCFTIMER_BASE2 + (a)) + +/* + * Choose a reasonably fast profile timer. Make it an odd value to + * try and get good coverage of kernel operations. + */ +#define PROFILEHZ 1013 + +/* + * Use the other timer to provide high accuracy profiling info. + */ +irqreturn_t coldfire_profile_tick(int irq, void *dummy) +{ + /* Reset ColdFire timer2 */ + __raw_writeb(MCFTIMER_TER_CAP | MCFTIMER_TER_REF, PA(MCFTIMER_TER)); + if (current->pid) + profile_tick(CPU_PROFILING); + return IRQ_HANDLED; +} + +/***************************************************************************/ + +static struct irqaction coldfire_profile_irq = { + .name = "profile timer", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = coldfire_profile_tick, +}; + +void coldfire_profile_init(void) +{ + printk(KERN_INFO "PROFILE: lodging TIMER2 @ %dHz as profile timer\n", + PROFILEHZ); + + /* Set up TIMER 2 as high speed profile clock */ + __raw_writew(MCFTIMER_TMR_DISABLE, PA(MCFTIMER_TMR)); + + __raw_writetrr(((MCF_BUSCLK / 16) / PROFILEHZ), PA(MCFTIMER_TRR)); + __raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 | + MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, PA(MCFTIMER_TMR)); + + setup_irq(MCF_IRQ_PROFILER, &coldfire_profile_irq); +} + +/***************************************************************************/ +#endif /* CONFIG_HIGHPROFILE */ +/***************************************************************************/ diff --git a/arch/m68k/platform/coldfire/vectors.c b/arch/m68k/platform/coldfire/vectors.c new file mode 100644 index 0000000..a21d3f8 --- /dev/null +++ b/arch/m68k/platform/coldfire/vectors.c @@ -0,0 +1,80 @@ +/***************************************************************************/ + +/* + * linux/arch/m68knommu/platform/coldfire/vectors.c + * + * Copyright (C) 1999-2007, Greg Ungerer <gerg@snapgear.com> + */ + +/***************************************************************************/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/irq.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/coldfire.h> +#include <asm/mcfsim.h> +#include <asm/mcfwdebug.h> + +/***************************************************************************/ + +#ifdef TRAP_DBG_INTERRUPT + +asmlinkage void dbginterrupt_c(struct frame *fp) +{ + extern void dump(struct pt_regs *fp); + printk(KERN_DEBUG "%s(%d): BUS ERROR TRAP\n", __FILE__, __LINE__); + dump((struct pt_regs *) fp); + asm("halt"); +} + +#endif + +/***************************************************************************/ + +extern e_vector *_ramvec; + +void set_evector(int vecnum, void (*handler)(void)) +{ + if (vecnum >= 0 && vecnum <= 255) + _ramvec[vecnum] = handler; +} + +/***************************************************************************/ + +/* Assembler routines */ +asmlinkage void buserr(void); +asmlinkage void trap(void); +asmlinkage void system_call(void); +asmlinkage void inthandler(void); + +void __init init_vectors(void) +{ + int i; + + /* + * There is a common trap handler and common interrupt + * handler that handle almost every vector. We treat + * the system call and bus error special, they get their + * own first level handlers. + */ + for (i = 3; (i <= 23); i++) + _ramvec[i] = trap; + for (i = 33; (i <= 63); i++) + _ramvec[i] = trap; + for (i = 24; (i <= 31); i++) + _ramvec[i] = inthandler; + for (i = 64; (i < 255); i++) + _ramvec[i] = inthandler; + _ramvec[255] = 0; + + _ramvec[2] = buserr; + _ramvec[32] = system_call; + +#ifdef TRAP_DBG_INTERRUPT + _ramvec[12] = dbginterrupt; +#endif +} + +/***************************************************************************/ |
