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2011-12-06ARM: proc-*.S: place cpu_reset functions into .idmap.text sectionWill Deacon1-0/+4
The CPU reset functions disable the MMU and therefore must be executed with an identity mapping in place. This patch places the CPU reset functions into the .idmap.text section, causing the idmap code to include them as part of the identity mapping. Acked-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
2011-07-23Merge branch 'devel-stable' into for-nextRussell King1-134/+32
Conflicts: arch/arm/kernel/entry-armv.S
2011-07-07ARM: mm: proc-arm6_7: Use the new processor struct macrosDave Martin1-134/+32
Signed-off-by: Dave Martin <dave.martin@linaro.org>
2011-07-02ARM: entry: data abort: ensure r5 is preserved by abort functionsRussell King1-17/+16
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-02ARM: entry: data abort: always use r6 for offsetRussell King1-3/+3
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-02ARM: entry: data abort: use r2 as base of pt_regs rather than stackRussell King1-7/+7
Now that we pass r2 into these helper functions as the pointer to pt_regs, use r2 as the base of the registers on the stack rather than using the stack pointer directly. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-02ARM: entry: data abort: tail-call the main data abort handlerRussell King1-15/+14
Tail-call the main C data abort handler code from the per-CPU helper code. Update the comments in the code wrt the new calling and return register state. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-02ARM: entry: data abort: avoid using r2 in abort helpersRussell King1-9/+9
This allows us to pass the pt_regs pointer in to these functions ready for tail-calling the abort handler. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-02ARM: entry: data abort: arrange for CPU abort helpers to take pc/psr in r4/r5Russell King1-5/+5
Re-jig the CPU abort helpers to take the PC/PSR in r4/r5 rather than r2/r3. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-22ARM: pm: add generic CPU suspend/resume supportRussell King1-0/+6
This adds core support for saving and restoring CPU coprocessor registers for suspend/resume support. This contains support for suspend with ARM920, ARM926, SA11x0, PXA25x, PXA27x, PXA3xx, V6 and V7 CPUs. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Tested-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-08ARM: hotplug cpu: Keep processor information, startup code & ↵Russell King1-1/+1
__lookup_processor_type When hotplug CPU is enabled, we need to keep the list of supported CPUs, their setup functions, and __lookup_processor_type in place so that we can find and initialize secondary CPUs. Move these into the __CPUINIT section. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-27ARM: Factor out common code from cpu_proc_fin()Russell King1-2/+0
All implementations of cpu_proc_fin() start by disabling interrupts and then flush caches. Rather than have every processors proc_fin() implementation do this, move it out into generic code - and move the cache flush past setup_mm_for_reboot() (so it can benefit from having caches still enabled.) This allows cpu_proc_fin() to become independent of the L1/L2 cache types, and eventually move the L2 cache flushing into the L2 support code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-03ARM: Fix wrong register in proc-arm6_7.S data abort handlerRussell King1-1/+1
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-10-03ARM: 5727/1: Pass IFSR register to do_PrefetchAbort()Kirill A. Shutemov1-2/+2
Instruction fault status register, IFSR, was introduced on ARMv6 to provide status information about the last insturction fault. It needed for proper prefetch abort handling. Now we have three prefetch abort model: * legacy - for CPUs before ARMv6. They doesn't provide neither IFSR nor IFAR. We simulate IFSR with section translation fault status for them to generalize code; * ARMv6 - provides IFSR, but not IFAR; * ARMv7 - provides both IFSR and IFAR. Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-10-01[ARM] Don't include asm/elf.h in asm codeRussell King1-1/+1
asm code really wants asm/hwcap.h, so include that instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-10-01[ARM] Convert set_pte_ext implementions to macrosRussell King1-20/+5
There are actually only four separate implementations of set_pte_ext. Use assembler macros to insert code for these into the proc-*.S files. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-24[ARM] fix 48d7927bdf071d05cf5d15b816cf06b0937cb84fCatalin Marinas1-2/+2
The proc-*.S files have the _prefetch_abort pointer placed at the end of the processor structure but the cpu-multi32.h defines it in the second position. The patch also fixes the support for XSC3 and the MMU-less CPUs (740, 7tdmi, 940, 946 and 9tdmi). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-19Add a prefetch abort handlerPaul Brook1-0/+2
This patch adds a prefetch abort handler similar to the data abort one and renames the latter for consistency. Initial implementation by Paul Brook with some renaming by Catalin Marinas. Signed-off-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2006-12-13[ARM] Unuse another Linux PTE bitRussell King1-5/+5
L_PTE_ASID is not really required to be stored in every PTE, since we can identify it via the address passed to set_pte_at(). So, create set_pte_ext() which takes the address of the PTE to set, the Linux PTE value, and the additional CPU PTE bits which aren't encoded in the Linux PTE value. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30[ARM] Include asm/elf.h instead of asm/procinfo.hRussell King1-1/+1
These files want to provide/access ELF hwcap information, so should be including asm/elf.h rather than asm/procinfo.h Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-29[ARM] Set bit 4 on section mappings correctly depending on CPURussell King1-0/+16
On some CPUs, bit 4 of section mappings means "update the cache when written to". On others, this bit is required to be one, and others it's required to be zero. Finally, on ARMv6 and above, setting it turns on "no execute" and prevents speculative prefetches. With all these combinations, no one value fits all CPUs, so we have to pick a value depending on the CPU type, and the area we're mapping. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-28[ARM] nommu: Initial uCLinux support for MMU-based CPUsHyok S. Choi1-0/+15
In noMMU mode, various of functions which are defined in mm/proc-*.S is not valid or needed to be avoided. i.g. switch_mm is not needed, just returns and this makes the I & D caches are valid which shows great improvement of performance including task switching and IPC. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-22[ARM] nommu: Move hardware page table definitions to pgtable-hwdef.hRussell King1-0/+1
Move the hardware PMD and PTE page table definitions from pgtable.h into pgtable-hwdef.h, and include pgtable-hwdef.h as necessary. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-20[ARM] 2926/1: .proc.info - postfix section with .init for `make buildcheck`Ben Dooks1-1/+1
Patch from Ben Dooks The `make buildcheck` is erroneously reporting that the .proc.info list is referencing items in the .init section as it is not itself postfixed with .init Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-09kbuild: arm - use generic asm-offsets.h supportSam Ravnborg1-1/+1
Delete obsoleted stuff from arch Makefile and rename constants.h to asm-offsets.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-04[ARM] 2875/1: Data Abort fixesTimothy Baldwin1-4/+4
Patch from Timothy Baldwin All data aborts are treated as read accesses. The existing code updates the wrong bit of r1, also the comments are wrong in that the sense of the L bit is inverted. Signed-off-by: Timothy E. Baldwin <T.E.Baldwin99@members.leeds.ac.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-04-17Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+404
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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