: MSR overwrite fix
PATCH 1/1 : MSR overwrite fix
Hello,
This patch fixes the MSR overwrite in the start.S when moving out of the last 4K page.
Signed-off-by Sughosh Ganu <[email protected]>
--- cpu/mpc85xx/start.S | 11 +++-------- 1 files changed, 3 insertions(+), 8 deletions(-)
cpu/mpc85xx/start.S +3 -8
@@ -218,6 +218,8 @@ _start_e500: bdnz 0b /* Clear and set up some registers. */ + li r0,0 + mtmsr r0 li r0,0x0000 lis r1,0xffff mtspr DEC,r0 /* prevent dec exceptions */
@@ -277,7 +279,6 @@ _start_e500: /* Jump out the last 4K page and continue to 'normal' start */ #ifdef CFG_RAMBOOT - bl 3f b _start_cont #else /* Calculate absolute address in FLASH and jump there */
@@ -286,15 +287,9 @@ _start_e500: ori r3,r3,CFG_MONITOR_BASE at l addi r3,r3,_start_cont - _start + _START_OFFSET mtlr r3 + blr #endif -3: li r0,0 - mtspr SRR1,r0 /* Keep things disabled for now */ - mflr r1 - mtspr SRR0,r1 - rfi - isync - .text .globl _start _start:
Signature · 1 line
1.4.4.4