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authorHyok S. Choi <hyok.choi@samsung.com>2006-09-28 08:46:16 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-09-28 15:15:46 -0400
commit0f45d7f36b766cb668cebfb5d4d2f67b4a8676ba (patch)
tree975c493fc13a2a078ef4d41374794faf1c5d1510 /arch/arm/mm/abort-nommu.S
parent6cc7cbef948ea2660cc40d7aab090a479f7db6a2 (diff)
[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.S19
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 @@
1#include <linux/linkage.h>
2#include <asm/assembler.h>
3/*
4 * Function: nommu_early_abort
5 *
6 * Params : r2 = address of aborted instruction
7 * : r3 = saved SPSR
8 *
9 * Returns : r0 = 0 (abort address)
10 * : r1 = 0 (FSR)
11 *
12 * Note: There is no FSR/FAR on !CPU_CP15_MMU cores.
13 * Just fill zero into the registers.
14 */
15 .align 5
16ENTRY(nommu_early_abort)
17 mov r0, #0 @ clear r0, r1 (no FSR/FAR)
18 mov r1, #0
19 mov pc, lr