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| author | Catalin Marinas <catalin.marinas@arm.com> | 2009-05-30 17:00:18 +0400 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2009-05-30 17:00:18 +0400 |
| commit | 26584853a44c58f3d6ac7360d697a2ddcd1a3efa (patch) | |
| tree | a47156d781c6207d316746a056a81ca82b90d452 /arch/arm/mm/abort-ev6.S | |
| parent | ee8c9571191e588ede9a220ded807e33c4897d91 (diff) | |
| download | linux-26584853a44c58f3d6ac7360d697a2ddcd1a3efa.tar.xz | |
Add core support for ARMv6/v7 big-endian
Starting with ARMv6, the CPUs support the BE-8 variant of big-endian
(byte-invariant). This patch adds the core support:
- setting of the BE-8 mode via the CPSR.E register for both kernel and
user threads
- big-endian page table walking
- REV used to rotate instructions read from memory during fault
processing as they are still little-endian format
- Kconfig and Makefile support for BE-8. The --be8 option must be passed
to the final linking stage to convert the instructions to
little-endian
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm/mm/abort-ev6.S')
| -rw-r--r-- | arch/arm/mm/abort-ev6.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mm/abort-ev6.S b/arch/arm/mm/abort-ev6.S index 6f7e70907e44..f332df7f0d37 100644 --- a/arch/arm/mm/abort-ev6.S +++ b/arch/arm/mm/abort-ev6.S @@ -37,6 +37,9 @@ ENTRY(v6_early_abort) movne pc, lr do_thumb_abort ldreq r3, [r2] @ read aborted ARM instruction +#ifdef CONFIG_CPU_ENDIAN_BE8 + reveq r3, r3 +#endif do_ldrd_abort tst r3, #1 << 20 @ L = 0 -> write orreq r1, r1, #1 << 11 @ yes. |