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* memblock: make memblock_set_node() support different memblock_typeTang Chen2014-01-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [sfr@canb.auug.org.au: fix powerpc build] Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Rafael J . Wysocki" <rjw@sisk.pl> Cc: Chen Tang <imtangchen@gmail.com> Cc: Gong Chen <gong.chen@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Len Brown <lenb@kernel.org> Cc: Liu Jiang <jiang.liu@huawei.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Taku Izumi <izumi.taku@jp.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Renninger <trenn@suse.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sh: delete __cpuinit usage from all sh filesPaul Gortmaker2013-07-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) are flagged as __cpuinit -- so if we remove the __cpuinit from arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the arch/sh uses of the __cpuinit macros from all C files. Currently sh does not have any __CPUINIT used in assembly files. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Paul Mundt <lethal@linux-sh.org> Cc: linux-sh@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* mtd/uclinux: Use generic __bss_stop instead of _ebssGeert Uytterhoeven2012-06-271-1/+1
| | | | | | | | | | | | | The standard (see BSS_SECTION() in <asm-generic/vmlinux.lds.h> and <asm-generic/sections.h>) symbol for the end of BSS is __bss_stop. This allows to remove all local declarations that have been added to several architectures just to please CONFIG_MTD_UCLINUX. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Greg Ungerer <gerg@uclinux.org>
* SuperH: Use HAVE_MEMBLOCK_NODE_MAPTejun Heo2011-12-081-1/+2
| | | | | | | | | | | sh doesn't access early_node_map[] directly and enabling HAVE_MEMBLOCK_NODE_MAP is trivial - replacing add_active_range() calls with memblock_set_node() and selecting HAVE_MEMBLOCK_NODE_MAP is enough. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: linux-sh@vger.kernel.org
* sh: kexec: Register crashk_resSimon Horman2011-09-051-3/+6
| | | | | | | | | | | | | | | Register crashk_res so that it can be used by kexec-tools via /proc/iomem. The crash kernel resource needs to be requested the same as the other kernel resources due to the fact that it's handled during the common path for adding new memory ranges, so it's added in to __add_active_range() with the others. This ensures that the crash kernel is properly reserved regardless of which memory range it's placed in. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Fix common misspellingsLucas De Marchi2011-03-311-1/+1
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* sh: Break out cpuinfo_op procfs bits.Paul Mundt2010-11-091-144/+0
| | | | | | | Presently this is all inlined in setup.c, which is not really the place for it. Follow the x86 example and split it out into its own file. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix the sparsemem disabled build.Paul Mundt2010-10-271-0/+1
| | | | | | | | The introduction of MAX_PHYSMEM_BITS in to the initial cpuinfo struct causes a build error when sparsemem is disabled and asm/sparsemem.h is not brought in by other means. Include it explicitly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Expose physical addressing mode through cpuinfo.Paul Mundt2010-10-261-0/+3
| | | | | | | | | | | CPUs can be in either the legacy 29-bit or 32-bit physical addressing modes. This follows the x86 approach of tracking the phys bits in cpuinfo and exposing it to userspace through procfs. This change was requested to permit kexec-tools to detect the physical addressing mode in order to determine the appropriate address mangling. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix address calculation of InitrdNobuhiro Iwamatsu2010-10-061-3/+4
| | | | | Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: provide generic arch_debugfs_dir.Paul Mundt2010-09-241-15/+0
| | | | | | | | | While sh previously had its own debugfs root, there now exists a common arch_debugfs_dir prototype, so we switch everything over to that. Presumably once more architectures start making use of this we'll be able to just kill off the stub kdebugfs wrapper. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* lmb: rename to memblockYinghai Lu2010-07-141-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | via following scripts FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/lmb/memblock/g' \ -e 's/LMB/MEMBLOCK/g' \ $FILES for N in $(find . -name lmb.[ch]); do M=$(echo $N | sed 's/lmb/memblock/g') mv $N $M done and remove some wrong change like lmbench and dlmb etc. also move memblock.c from lib/ to mm/ Suggested-by: Ingo Molnar <mingo@elte.hu> Acked-by: "H. Peter Anvin" <hpa@zytor.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge branch 'sh/lmb'Paul Mundt2010-05-131-202/+26
|\ | | | | | | | | Conflicts: arch/sh/kernel/setup.c
| * sh: Ensure active regions have a backing PMB entry.Paul Mundt2010-05-111-2/+15
| | | | | | | | | | | | | | | | | | | | | | In the NUMA or memory hot-add case where system memory has been partitioned up, we immediately run in to a situation where the existing PMB entry doesn't cover the new range (primarily as a result of the entry size being shrunk to match the node size early in the initialization). In order to fix this up it's necessary to preload a PMB mapping for the new range prior to activation in order to circumvent reset by MMU. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: bootmem refactoring.Paul Mundt2010-05-111-139/+4
| | | | | | | | | | | | | | | | | | | | | | This reworks much of the bootmem setup and initialization code allowing us to get rid of duplicate work between the NUMA and non-NUMA cases. The end result is that we end up with a much more flexible interface for supporting more complex topologies (fake NUMA, highmem, etc, etc.) which is entirely LMB backed. This is an incremental step for more NUMA work as well as gradually enabling migration off of bootmem entirely. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: rework memory limits to work with LMB.Paul Mundt2010-05-101-38/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This reworks the memory limit handling to tie in through the available LMB infrastructure. This requires a bit of reordering as we need to have all of the LMB reservations taken care of prior to establishing the limits. While we're at it, the crash kernel reservation semantics are reworked so that we allocate from the bottom up and reduce the risk of having to disable the memory limit due to a clash with the crash kernel reservation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: enable LMB region setup via machvec.Paul Mundt2010-05-101-13/+13
| | | | | | | | | | | | | | | | | | This plugs in a memory init callback in the machvec to permit boards to wire up various bits of memory directly in to LMB. A generic machvec implementation is provided that simply wraps around the normal Kconfig-derived memory start/size. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: bump up extra LMB reservations in bootmem init.Paul Mundt2010-05-071-4/+6
| | | | | | | | | | | | | | | | This bumps up the extra LMB reservations in ordering so that they're accounted for prior to iterating over the region list. This ensures that reservations are visible both within the LMB and bootmem context. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: convert initrd reservation to LMB.Paul Mundt2010-05-071-1/+1
| | | | | | | | | | | | This switches over from bootmem -> LMB for the initrd area reservation. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: convert kexec crash kernel management to LMB.Paul Mundt2010-05-071-43/+0
| | | | | | | | | | | | This migrates the crash kernel handling off of bootmem and over to LMB. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh: shuffle the elfcorehdr handling over to the crash dump code.Paul Mundt2010-05-071-19/+0
|/ | | | | | | | The elfcorehdr parsing was just tossed in setup.c, but nothing outside of the crash dump code/vmcore bits require it, so we just move it out of the way, as per ppc. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Make initrd detection more robust.Paul Mundt2010-05-061-20/+58
| | | | | | | | | | Various boot loaders go to various extents to thwart the initrd detection logic (mostly on account of not being able to be bothered with adhering to the established boot ABI), so we make the detection logic a bit more robust. This makes it possible to work around the SDK7786's firmware's attempts to thwart compressed image booting. Victory is mine. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: arch/sh/kernel/setup.c needs asm/smp.h.Paul Mundt2010-04-261-0/+1
| | | | | | | | With the platform ops migration, the definitions still need to be included in the CONFIG_SMP=n case, so make the asm/smp.h include explicit. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move platform smp ops in to their own structure.Paul Mundt2010-04-211-2/+0
| | | | | | | | This cribs the MIPS plat_smp_ops approach for wrapping up the platform ops. This will allow for mixing and matching different ops on the same platform in the future. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: establish PMB mappings for NUMA nodes.Paul Mundt2010-03-031-2/+1
| | | | | | | | In the case of NUMA emulation when in range PPNs are being used for secondary nodes, we need to make sure that the PMB has a mapping for it before setting up the pgdat. This prevents the MMU from resetting. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Merge legacy and dynamic PMB modes.Paul Mundt2010-02-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | This implements a bit of rework for the PMB code, which permits us to kill off the legacy PMB mode completely. Rather than trusting the boot loader to do the right thing, we do a quick verification of the PMB contents to determine whether to have the kernel setup the initial mappings or whether it needs to mangle them later on instead. If we're booting from legacy mappings, the kernel will now take control of them and make them match the kernel's initial mapping configuration. This is accomplished by breaking the initialization phase out in to multiple steps: synchronization, merging, and resizing. With the recent rework, the synchronization code establishes page links for compound mappings already, so we build on top of this for promoting mappings and reclaiming unused slots. At the same time, the changes introduced for the uncached helpers also permit us to dynamically resize the uncached mapping without any particular headaches. The smallest page size is more than sufficient for mapping all of kernel text, and as we're careful not to jump to any far off locations in the setup code the mapping can safely be resized regardless of whether we are executing from it or not. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add fixed ioremap supportMatt Fleming2010-01-161-3/+4
| | | | | | | | | | | | | Some devices need to be ioremap'd and accessed very early in the boot process. It is not possible to use the standard ioremap() function in this case because that requires kmalloc()'ing some virtual address space and kmalloc() may not be available so early in boot. This patch provides fixmap mappings that allow physical address ranges to be remapped into the kernel address space during the early boot stages. Signed-off-by: Matt Fleming <matt@console-pimps.org>
* sh: fixed PMB mode refactoring.Paul Mundt2010-01-131-3/+0
| | | | | | | | | | | | | | | | | | | | | | This introduces some much overdue chainsawing of the fixed PMB support. fixed PMB was introduced initially to work around the fact that dynamic PMB mode was relatively broken, though they were never intended to converge. The main areas where there are differences are whether the system is booted in 29-bit mode or 32-bit mode, and whether legacy mappings are to be preserved. Any system booting in true 32-bit mode will not care about legacy mappings, so these are roughly decoupled. Regardless of the entry point, PMB and 32BIT are directly related as far as the kernel is concerned, so we also switch back to having one select the other. With legacy mappings iterated through and applied in the initialization path it's now possible to finally merge the two implementations and permit dynamic remapping overtop of remaining entries regardless of whether boot mappings are crafted by hand or inherited from the boot loader. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh-sci: Extend sh-sci driver with early console V2Magnus Damm2009-12-151-0/+3
| | | | | | | | | | | | This is V2 of early serial console support for the sh-sci driver. The early serial console is using early platform devices and "earlyprintk". To use this feature the early platform devices must be broken out to one device per port and the desired port should be selected on the kernel command line like: "earlyprintk=sh-sci.N[,baudrate][,keep]" Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'sh/stable-updates'Paul Mundt2009-10-141-0/+2
|\
| * sh: Tidy up SMP cpuinfo.Paul Mundt2009-10-141-0/+2
| | | | | | | | | | | | | | Trivial change for cleaning up the cpuinfo pretty printing on SMP, adds a newline between CPUs. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh: Fold fixed-PMB support into dynamic PMB supportMatt Fleming2009-10-101-1/+1
| | | | | | | | | | | | | | | | | | The initialisation process differs for CONFIG_PMB and for CONFIG_PMB_FIXED. For CONFIG_PMB_FIXED we need to register the PMB entries that were allocated by the bootloader. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh: Make most PMB functions staticMatt Fleming2009-10-101-0/+4
|/ | | | | | | | | | | | There's no need to export the internal PMB functions for allocating, freeing and modifying PMB entries, etc. This way we can restrict the interface for PMB. Also remove the static from pmb_init() so that we have more freedom in setting up the initial PMB entries and turning on MMU 32bit mode. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'master' into sh/smpPaul Mundt2009-09-011-2/+6
|\ | | | | | | | | Conflicts: arch/sh/mm/cache-sh4.c
| * sh: Allow for kernel command line concatenation.Pawel Moll2009-08-241-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far kernel command line arguments could be passed in by a bootloader or defined as CONFIG_CMDLINE, which completely overwriting the first one. This change allows a developer to declare selected kernel parameters in a kernel configuration (eg. project-specific defconfig), retaining possibility of passing others by a bootloader. The obvious examples of the first type are MTD partition or bigphysarea-like region definitions, while "debug" option or network configuration should be given by a bootloader or a JTAG boot script. Signed-off-by: Pawel Moll <pawel.moll@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Add initial support for SH7757 CPU subtypeYoshihiro Shimoda2009-08-211-1/+1
| | | | | | | | | | Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh: Track the CPU family in sh_cpuinfo.Paul Mundt2009-08-151-0/+1
|/ | | | | | | | | | This adds a family member to struct sh_cpuinfo, which allows us to fall back more on the probe routines to work out what sort of subtype we are running on. This will be used by the CPU cache initialization code in order to first do family-level initialization, followed by subtype-level optimizations. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Use bootmem ontop of lmbMatt Fleming2009-07-031-19/+52
| | | | | | | Rework the bootmem allocator to use the lmb framework. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: rework mode pin codeMagnus Damm2009-06-111-1/+1
| | | | | | | | | | | | | This patch reworks the mode pin code to keep the pin definitions in one place. The mode pins values are now the value of the bit instead of bit number. With this patch in place the sh7785 header file contains mode pin comments. The sh7785 clock code and the sh7785lcr board code are updated to reflect the new shared mode pins. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: boot word / mode pin support V2Magnus Damm2009-06-011-0/+12
| | | | | | | | | | | | | | | | Add mode pin support for the SuperH architecture V2. With this patch applied the board code can add their own function to export the cpu mode pin configuration. In most cases this will be a constant bitmap, but boards that allow reading this from a register can instead read out the pin state from hardware. The code warns if a pin is tested but no board specific mode pin function has been provided. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Kill off the GENERIC_CALIBRATE_DELAY ifndef.Paul Mundt2009-05-081-3/+1
| | | | | | | | Now that everyone is using the clock framework directly and we unconditionally provide our own calibrate_delay() function, having it wrapped in an ifndef is no longer useful. So, kill it off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
*-. Merge branches 'sh/earlytimer' and 'sh/shmobile-r2r-staging'Paul Mundt2009-04-191-1/+9
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| | * sh: Add support for SH7724 (SH-Mobile R2R) CPU subtype.Kuninori Morimoto2009-04-161-1/+2
| |/ |/| | | | | | | | | | | | | This implements initial support for the SH-Mobile R2R CPU. Based on Rev 0.11 of the initial SH7724 hardware manual. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Add plat_early_device_setup()Magnus Damm2009-04-191-0/+7
|/ | | | | | | | Add a plat_early_device_setup() function to allow processor-specific code to register Early Platform Data. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix up -Wformat-security whining.Paul Mundt2009-03-311-3/+2
| | | | | | | | | | Triggers -Werror on gcc-4.3: arch/sh/kernel/setup.c: In function 'early_parse_mem': arch/sh/kernel/setup.c:111: error: format not a string literal and no format arguments ... Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Support for extended ASIDs on PTEAEX-capable SH-X3 cores.Paul Mundt2009-03-171-1/+1
| | | | | | | | | | | | | | | | | | | | This adds support for extended ASIDs (up to 16-bits) on newer SH-X3 cores that implement the PTAEX register and respective functionality. Presently only the 65nm SH7786 (90nm only supports legacy 8-bit ASIDs). The main change is in how the PTE is written out when loading the entry in to the TLB, as well as in how the TLB entry is selectively flushed. While SH-X2 extended mode splits out the memory-mapped U and I-TLB data arrays for extra bits, extended ASID mode splits out the address arrays. While we don't use the memory-mapped data array access, the address array accesses are necessary for selective TLB flushes, so these are implemented newly and replace the generic SH-4 implementation. With this, TLB flushes in switch_mm() are almost non-existent on newer parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add support for SH7786 CPU subtype.Kuninori Morimoto2009-03-031-0/+1
| | | | | | | | | | | | | | This adds preliminary support for the SH7786 CPU subtype. While this is a dual-core CPU, only UP is supported for now. L2 cache support is likewise not yet implemented. More information on this particular CPU subtype is available at: http://www.renesas.com/fmwk.jsp?cnt=sh7786_root.jsp&fp=/products/mpumcu/superh_family/sh7780_series/sh7786_group/ Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Only reserve memory under CONFIG_ZERO_PAGE_OFFSET when it != 0.Christopher SMITH2009-01-291-4/+4
| | | | | | Signed-off-by: Chris Smith <chris.smith@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Add support for SH7201 CPU subtype.Peter Griffin2008-12-221-0/+1
| | | | | | | This patch adds support for the SH-2A FPU based SH7201 processor subtype. Signed-off-by: Peter Griffin <pgriffin@mpc-data.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: add dynamic crash base address supportMagnus Damm2008-10-201-6/+9
| | | | | | | Add support for dynamic crash kernel base address. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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