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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-09 16:32:13 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-09 16:32:13 -0800 |
commit | 3510ca19a82ba4c6a17af79c1f0448622a406efa (patch) | |
tree | 79b9e734100e40f379e9b4c3c50d261c3cdc2fa8 /arch/xtensa/boot | |
parent | e4da7e9a54649d6877ac23828ff93ce7191eae2c (diff) | |
parent | afaa7c542cc9c4d8a99ba252a8ea5e8bc7c897e2 (diff) | |
download | op-kernel-dev-3510ca19a82ba4c6a17af79c1f0448622a406efa.zip op-kernel-dev-3510ca19a82ba4c6a17af79c1f0448622a406efa.tar.gz |
Merge tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux
Pull xtensa updates from Chris Zankel:
- fix remaining issues with noMMU cores
- fix build for cores w/o cache or zero overhead loop options
- fix boot of secondary cores in SMP configuration
- add support for DMA to high memory pages
- add dma_to_phys and phys_to_dma functions.
* tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux:
xtensa: implement dma_to_phys and phys_to_dma
xtensa: support DMA to high memory
Revert "xtensa: cache inquiry and unaligned cache handling functions"
xtensa: drop unused sections and remapped reset handlers
xtensa: fix secondary core boot in SMP
xtensa: add FORCE_MAX_ZONEORDER to Kconfig
xtensa: nommu: provide defconfig for de212 on kc705
xtensa: nommu: xtfpga: add kc705 DTS
xtensa: add de212 core variant
xtensa: nommu: select HAVE_FUTEX_CMPXCHG
xtensa: nommu: fix default memory start address
xtensa: nommu: provide correct KIO addresses
xtensa: nommu: fix USER_RING definition
xtensa: xtfpga: fix integer overflow in TASK_SIZE
xtensa: fix build for configs without cache options
xtensa: fixes for configs without loop option
Diffstat (limited to 'arch/xtensa/boot')
-rw-r--r-- | arch/xtensa/boot/boot-elf/boot.lds.S | 13 | ||||
-rw-r--r-- | arch/xtensa/boot/boot-elf/bootstrap.S | 28 | ||||
-rw-r--r-- | arch/xtensa/boot/dts/kc705_nommu.dts | 17 |
3 files changed, 17 insertions, 41 deletions
diff --git a/arch/xtensa/boot/boot-elf/boot.lds.S b/arch/xtensa/boot/boot-elf/boot.lds.S index 958b33a..e54f2c9 100644 --- a/arch/xtensa/boot/boot-elf/boot.lds.S +++ b/arch/xtensa/boot/boot-elf/boot.lds.S @@ -40,17 +40,4 @@ SECTIONS *(.bss) __bss_end = .; } - -#ifdef CONFIG_MMU - /* - * This is a remapped copy of the Reset Vector Code. - * It keeps gdb in sync with the PC after switching - * to the temporary mapping used while setting up - * the V2 MMU mappings for Linux. - */ - .ResetVector.remapped_text 0x46000000 (INFO): - { - *(.ResetVector.remapped_text) - } -#endif } diff --git a/arch/xtensa/boot/boot-elf/bootstrap.S b/arch/xtensa/boot/boot-elf/bootstrap.S index 9341a57..e6bf313 100644 --- a/arch/xtensa/boot/boot-elf/bootstrap.S +++ b/arch/xtensa/boot/boot-elf/bootstrap.S @@ -58,8 +58,6 @@ _SetupMMU: wsr a0, ps rsync - Offset = _SetupMMU - _ResetVector - #ifndef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX initialize_mmu #endif @@ -74,29 +72,3 @@ reset: movi a3, 0 movi a4, 0 jx a0 - -#ifdef CONFIG_MMU - .align 4 - - .section .ResetVector.remapped_text, "x" - .global _RemappedResetVector - - /* Do org before literals */ - .org 0 - -_RemappedResetVector: - .begin no-absolute-literals - .literal_position - - _j _RemappedSetupMMU - - /* Position Remapped code at the same location as the original code */ - . = _RemappedResetVector + Offset - -_RemappedSetupMMU: -#ifndef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX - initialize_mmu -#endif - - .end no-absolute-literals -#endif diff --git a/arch/xtensa/boot/dts/kc705_nommu.dts b/arch/xtensa/boot/dts/kc705_nommu.dts new file mode 100644 index 0000000..65f3d74 --- /dev/null +++ b/arch/xtensa/boot/dts/kc705_nommu.dts @@ -0,0 +1,17 @@ +/dts-v1/; +/include/ "xtfpga.dtsi" +/include/ "xtfpga-flash-128m.dtsi" + +/ { + compatible = "cdns,xtensa-kc705"; + chosen { + bootargs = "earlycon=uart8250,mmio32,0x9d050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug"; + }; + memory@0 { + device_type = "memory"; + reg = <0x60000000 0x10000000>; + }; + soc { + ranges = <0x00000000 0x90000000 0x10000000>; + }; +}; |