Without this change, we'll be suffering from deffered WATCH exception once Status.EXL is cleared. Make sure Cause.WP is cleared.
Signed-off-by: Shinya Kuribayashi skuribay@ruby.dti.ne.jp ---
cpu/mips/start.S | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/cpu/mips/start.S b/cpu/mips/start.S index fde2944..0ecdd83 100644 --- a/cpu/mips/start.S +++ b/cpu/mips/start.S @@ -211,6 +211,9 @@ reset: mtc0 zero, CP0_WATCHLO mtc0 zero, CP0_WATCHHI
+ /* WP(Watch Pending), SW0/1 should be cleared. */ + mtc0 zero, CP0_CAUSE + /* STATUS register */ #ifdef CONFIG_TB0229 li k0, ST0_CU0 @@ -221,9 +224,6 @@ reset: and k0, k1 mtc0 k0, CP0_STATUS
- /* CAUSE register */ - mtc0 zero, CP0_CAUSE - /* Init Timer */ mtc0 zero, CP0_COUNT mtc0 zero, CP0_COMPARE