>From source code comments:
"x0: 0 flush & invalidate, 1 invalidate only"
Current value 0xffff can make invalidate work, since we only judge whether
input value is 0 or not, see following code:
"
tbz w1, #0, 1f
dc isw, x9
b 2f
1: dc cisw, x9 /* clean & invalidate by set/way */
2: subs x6, x6, #1 /* decrement the way */
"
Later we may add "2 clean only" support. So following the comments,
correct value from 0xffff to 1.
Signed-off-by: Peng Fan <[email protected]>
Cc: York Sun <[email protected]>
Cc: Albert Aribaud <[email protected]>
---
Note:
The patch was done when I was reading the source code.
Since I do not have a board support armv8, I do not test this patch
on real board.
arch/arm/cpu/armv8/cache.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv8/cache.S b/arch/arm/cpu/armv8/cache.S
index d846236..ab8c089 100644
--- a/arch/arm/cpu/armv8/cache.S
+++ b/arch/arm/cpu/armv8/cache.S
@@ -112,7 +112,7 @@ ENDPROC(__asm_flush_dcache_all)
ENTRY(__asm_invalidate_dcache_all)
mov x16, lr
- mov x0, #0xffff
+ mov x0, #0x1
bl __asm_dcache_all
mov lr, x16
ret
--
1.8.4
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