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| author | Hyok S. Choi <hyok.choi@samsung.com> | 2006-09-28 14:46:16 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-28 21:15:46 +0200 |
| commit | 0f45d7f36b766cb668cebfb5d4d2f67b4a8676ba (patch) | |
| tree | 975c493fc13a2a078ef4d41374794faf1c5d1510 /arch/arm/mm/abort-nommu.S | |
| parent | [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h (diff) | |
| download | linux-0f45d7f36b766cb668cebfb5d4d2f67b4a8676ba.tar.xz linux-0f45d7f36b766cb668cebfb5d4d2f67b4a8676ba.zip | |
[ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores.
There is no FSR/FAR register on no-CP15 or MPU cores. This patch adds a
dummy abort handler which returns zero for the base restored Data Abort
model !CPU_CP15_MMU cores. The abort-lv4t.S is still used with the fix-up
for the base updated Data Abort model cores.
Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/abort-nommu.S')
| -rw-r--r-- | arch/arm/mm/abort-nommu.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mm/abort-nommu.S b/arch/arm/mm/abort-nommu.S new file mode 100644 index 000000000000..a7cc7f9ee45d --- /dev/null +++ b/arch/arm/mm/abort-nommu.S @@ -0,0 +1,19 @@ +#include <linux/linkage.h> +#include <asm/assembler.h> +/* + * Function: nommu_early_abort + * + * Params : r2 = address of aborted instruction + * : r3 = saved SPSR + * + * Returns : r0 = 0 (abort address) + * : r1 = 0 (FSR) + * + * Note: There is no FSR/FAR on !CPU_CP15_MMU cores. + * Just fill zero into the registers. + */ + .align 5 +ENTRY(nommu_early_abort) + mov r0, #0 @ clear r0, r1 (no FSR/FAR) + mov r1, #0 + mov pc, lr |