From: David Feng <feng...@phytium.com.cn>
The cache disable operation shoud be performed after flush_dcache_all().
If cache disable operation is performed before
flush_dcache_all(), flush_dcache_all() store data directly to memory
and may be overrided by data copy in cache.
Signed-off-by: David Feng <feng...@phytium.com.cn>
---
arch/arm/cpu/armv8/cache_v8.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c
index 9dbcdf2..dc2fc8c 100644
--- a/arch/arm/cpu/armv8/cache_v8.c
+++ b/arch/arm/cpu/armv8/cache_v8.c
@@ -124,9 +124,10 @@ void dcache_disable(void)
if (!(sctlr & CR_C))
return;
+ flush_dcache_all();
+
set_sctlr(sctlr & ~(CR_C|CR_M));
- flush_dcache_all();
__asm_invalidate_tlb_all();
}
--
1.7.9.5
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