Global interrupt should be disabled from the beginning.
Signed-off-by: Thomas Chou <tho...@wytron.com.tw>
---
arch/nios2/cpu/start.S | 9 ++++-----
1 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/nios2/cpu/start.S b/arch/nios2/cpu/start.S
index 31cd5b0..d1016ea 100644
--- a/arch/nios2/cpu/start.S
+++ b/arch/nios2/cpu/start.S
@@ -34,6 +34,7 @@
.global _start
_start:
+ wrctl status, r0 /* Disable interrupts */
/* ICACHE INIT -- only the icache line at the reset address
* is invalidated at reset. So the init must stay within
* the cache line size (8 words). If GERMS is used, we'll
@@ -43,10 +44,9 @@ _start:
ori r4, r0, %lo(CONFIG_SYS_ICACHELINE_SIZE)
movhi r5, %hi(CONFIG_SYS_ICACHE_SIZE)
ori r5, r5, %lo(CONFIG_SYS_ICACHE_SIZE)
- mov r6, r0
-0: initi r6
- add r6, r6, r4
- bltu r6, r5, 0b
+0: initi r5
+ sub r5, r5, r4
+ bgt r5, r0, 0b
br _except_end /* Skip the tramp */
/* EXCEPTION TRAMPOLINE -- the following gets copied
@@ -62,7 +62,6 @@ _except_end:
/* INTERRUPTS -- for now, all interrupts masked and globally
* disabled.
*/
- wrctl status, r0 /* Disable interrupts */
wrctl ienable, r0 /* All disabled */
/* DCACHE INIT -- if dcache not implemented, initd behaves as
--
1.6.6.1
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