aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/boot/compressed
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/boot/compressed')
-rw-r--r--arch/arm/boot/compressed/head.S14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 84a1e0496a3..7b1f31295a0 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -717,6 +717,9 @@ __armv7_mmu_cache_off:
bl __armv7_mmu_cache_flush
mov r0, #0
mcr p15, 0, r0, c8, c7, 0 @ invalidate whole TLB
+ mcr p15, 0, r0, c7, c5, 6 @ invalidate BTC
+ mcr p15, 0, r0, c7, c10, 4 @ DSB
+ mcr p15, 0, r0, c7, c5, 4 @ ISB
mov pc, r12
__arm6_mmu_cache_off:
@@ -778,12 +781,13 @@ __armv6_mmu_cache_flush:
__armv7_mmu_cache_flush:
mrc p15, 0, r10, c0, c1, 5 @ read ID_MMFR1
tst r10, #0xf << 16 @ hierarchical cache (ARMv7)
- beq hierarchical
mov r10, #0
+ beq hierarchical
mcr p15, 0, r10, c7, c14, 0 @ clean+invalidate D
b iflush
hierarchical:
- stmfd sp!, {r0-r5, r7, r9-r11}
+ mcr p15, 0, r10, c7, c10, 5 @ DMB
+ stmfd sp!, {r0-r5, r7, r9, r11}
mrc p15, 1, r0, c0, c0, 1 @ read clidr
ands r3, r0, #0x7000000 @ extract loc from clidr
mov r3, r3, lsr #23 @ left align loc bit field
@@ -820,12 +824,14 @@ skip:
cmp r3, r10
bgt loop1
finished:
+ ldmfd sp!, {r0-r5, r7, r9, r11}
mov r10, #0 @ swith back to cache level 0
mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
- ldmfd sp!, {r0-r5, r7, r9-r11}
iflush:
+ mcr p15, 0, r10, c7, c10, 4 @ DSB
mcr p15, 0, r10, c7, c5, 0 @ invalidate I+BTB
- mcr p15, 0, r10, c7, c10, 4 @ drain WB
+ mcr p15, 0, r10, c7, c10, 4 @ DSB
+ mcr p15, 0, r10, c7, c5, 4 @ ISB
mov pc, lr
__armv5tej_mmu_cache_flush: