Writing to the coprocessor 0 TagLo registers introduces an execution hazard in that we need that write to complete before any cache instructions execute. Ensure that hazard is cleared by inserting an ehb instruction between the TagLo writes & cache op loop.
Signed-off-by: Paul Burton paul.burton@imgtec.com
---
Changes in v3: - New patch
Changes in v2: None
arch/mips/lib/cache_init.S | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/mips/lib/cache_init.S b/arch/mips/lib/cache_init.S index e61432e..53e903a 100644 --- a/arch/mips/lib/cache_init.S +++ b/arch/mips/lib/cache_init.S @@ -293,6 +293,7 @@ l2_init: l1_init: mtc0 zero, CP0_TAGLO mtc0 zero, CP0_TAGLO, 2 + ehb
/* * The caches are probably in an indeterminate state, so we force good