On 13-05-27 12:55 PM, Paul Butler wrote:
Signed-off-by: Paul Butler <[email protected]>
These are common files, and not protected by #ifdefs, are these safe for all
v7 boards ?
Bruce
---
arch/arm/mm/proc-v7-2level.S | 4 +++-
arch/arm/mm/proc-v7-3level.S | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mm/proc-v7-2level.S b/arch/arm/mm/proc-v7-2level.S
index 42ac069..e3f2ba9 100644
--- a/arch/arm/mm/proc-v7-2level.S
+++ b/arch/arm/mm/proc-v7-2level.S
@@ -101,7 +101,9 @@ ENTRY(cpu_v7_set_pte_ext)
ARM( str r3, [r0, #2048]! )
THUMB( add r0, r0, #2048 )
THUMB( str r3, [r0] )
- mcr p15, 0, r0, c7, c10, 1 @ flush_pte
+ mrc p15, 0, r3, c0, c1, 7 @ read ID_MMFR3
+ tst r3, #0xf << 20 @ check the coherent walk bits
+ mcreq p15, 0, r0, c7, c10, 1 @ clean D-cache to PoU
#endif
mov pc, lr
ENDPROC(cpu_v7_set_pte_ext)
diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S
index 8de0f1d..6b30605 100644
--- a/arch/arm/mm/proc-v7-3level.S
+++ b/arch/arm/mm/proc-v7-3level.S
@@ -70,7 +70,9 @@ ENTRY(cpu_v7_set_pte_ext)
tst r3, #1 << (55 - 32) @ L_PTE_DIRTY
orreq r2, #L_PTE_RDONLY
1: strd r2, r3, [r0]
- mcr p15, 0, r0, c7, c10, 1 @ flush_pte
+ mrc p15, 0, r3, c0, c1, 7 @ read ID_MMFR3
+ tst r3, #0xf << 20 @ check the coherent walk bits
+ mcreq p15, 0, r0, c7, c10, 1 @ clean D-cache to PoU
#endif
mov pc, lr
ENDPROC(cpu_v7_set_pte_ext)
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