[PATCH] MIPS: zboot: Avoid endless loop in clear BSS.

[Jinyang He]

Commit 2ee1503e546f ("MIPS: zboot: head.S clean up").

After .noreorder removed, clear BSS fall into endless loop. The bne
instruction will add nop to the delay slot at compile time. So a0
register will not increment by 4. Fix it and clear BSS from _edata
to (_end - 1).

Signed-off-by: Jinyang He <hejiny...@loongson.cn>
---
 arch/mips/boot/compressed/head.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/boot/compressed/head.S b/arch/mips/boot/compressed/head.S
index 070b2fb..5795d0a 100644
--- a/arch/mips/boot/compressed/head.S
+++ b/arch/mips/boot/compressed/head.S
@@ -26,8 +26,8 @@
        PTR_LA  a0, _edata
        PTR_LA  a2, _end
 1:     sw      zero, 0(a0)
+       addiu   a0, a0, 4
        bne     a2, a0, 1b
-        addiu  a0, a0, 4
 
        PTR_LA  a0, (.heap)          /* heap address */
        PTR_LA  sp, (.stack + 8192)  /* stack address */
-- 
2.1.0