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| author | Timothy Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2005-09-04 10:13:48 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-09-04 10:13:48 +0100 |
| commit | ca6ca91d8c7498d45e0d35800503699164366f10 (patch) | |
| tree | 3e340cd984e08f4f1edd7c8f33c4e45cf6ace743 | |
| parent | 9bed07d0fed01f7c39d128e59e5d35d7d67ff439 (diff) | |
| download | linux-3.10-ca6ca91d8c7498d45e0d35800503699164366f10.tar.gz linux-3.10-ca6ca91d8c7498d45e0d35800503699164366f10.tar.bz2 linux-3.10-ca6ca91d8c7498d45e0d35800503699164366f10.zip | |
[ARM] 2875/1: Data Abort fixes
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>
| -rw-r--r-- | arch/arm/mm/proc-arm6_7.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/mm/proc-arm6_7.S b/arch/arm/mm/proc-arm6_7.S index 0ee214b824f..189ef6a71ba 100644 --- a/arch/arm/mm/proc-arm6_7.S +++ b/arch/arm/mm/proc-arm6_7.S @@ -38,8 +38,8 @@ ENTRY(cpu_arm7_data_abort) mrc p15, 0, r1, c5, c0, 0 @ get FSR mrc p15, 0, r0, c6, c0, 0 @ get FAR ldr r8, [r0] @ read arm instruction - tst r8, #1 << 20 @ L = 1 -> write? - orreq r1, r1, #1 << 8 @ yes. + tst r8, #1 << 20 @ L = 0 -> write? + orreq r1, r1, #1 << 11 @ yes. and r7, r8, #15 << 24 add pc, pc, r7, lsr #22 @ Now branch to the relevant processing routine nop @@ -71,8 +71,8 @@ ENTRY(cpu_arm6_data_abort) mrc p15, 0, r1, c5, c0, 0 @ get FSR mrc p15, 0, r0, c6, c0, 0 @ get FAR ldr r8, [r2] @ read arm instruction - tst r8, #1 << 20 @ L = 1 -> write? - orreq r1, r1, #1 << 8 @ yes. + tst r8, #1 << 20 @ L = 0 -> write? + orreq r1, r1, #1 << 11 @ yes. and r7, r8, #14 << 24 teq r7, #8 << 24 @ was it ldm/stm movne pc, lr |