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-rw-r--r--arch/arm/mm/abort-lv4t.S7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/mm/abort-lv4t.S b/arch/arm/mm/abort-lv4t.S
index db743e510214..9fb7b0e25ea1 100644
--- a/arch/arm/mm/abort-lv4t.S
+++ b/arch/arm/mm/abort-lv4t.S
@@ -19,11 +19,16 @@
*/
ENTRY(v4t_late_abort)
tst r3, #PSR_T_BIT @ check for thumb mode
+#ifdef CONFIG_CPU_CP15_MMU
mrc p15, 0, r1, c5, c0, 0 @ get FSR
mrc p15, 0, r0, c6, c0, 0 @ get FAR
+ bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR
+#else
+ mov r0, #0 @ clear r0, r1 (no FSR/FAR)
+ mov r1, #0
+#endif
bne .data_thumb_abort
ldr r8, [r2] @ read arm instruction
- bic r1, r1, #1 << 11 | 1 << 10 @ clear bits 11 and 10 of FSR
tst r8, #1 << 20 @ L = 1 -> write?
orreq r1, r1, #1 << 11 @ yes.
and r7, r8, #15 << 24