diff options
Diffstat (limited to 'arch/arm/mm/cache-v7.S')
-rw-r--r-- | arch/arm/mm/cache-v7.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index d19c2bec2b1f..be93ff02a98d 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S | |||
@@ -26,6 +26,7 @@ | |||
26 | * - mm - mm_struct describing address space | 26 | * - mm - mm_struct describing address space |
27 | */ | 27 | */ |
28 | ENTRY(v7_flush_dcache_all) | 28 | ENTRY(v7_flush_dcache_all) |
29 | dmb @ ensure ordering with previous memory accesses | ||
29 | mrc p15, 1, r0, c0, c0, 1 @ read clidr | 30 | mrc p15, 1, r0, c0, c0, 1 @ read clidr |
30 | ands r3, r0, #0x7000000 @ extract loc from clidr | 31 | ands r3, r0, #0x7000000 @ extract loc from clidr |
31 | mov r3, r3, lsr #23 @ left align loc bit field | 32 | mov r3, r3, lsr #23 @ left align loc bit field |
@@ -64,6 +65,7 @@ skip: | |||
64 | finished: | 65 | finished: |
65 | mov r10, #0 @ swith back to cache level 0 | 66 | mov r10, #0 @ swith back to cache level 0 |
66 | mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr | 67 | mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr |
68 | dsb | ||
67 | isb | 69 | isb |
68 | mov pc, lr | 70 | mov pc, lr |
69 | ENDPROC(v7_flush_dcache_all) | 71 | ENDPROC(v7_flush_dcache_all) |