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| author | urwithsughosh@gmail.com <urwithsughosh@gmail.com> | 2007-09-24 13:36:01 -0400 |
|---|---|---|
| committer | Andrew Fleming-AFLEMING <afleming@freescale.com> | 2007-10-19 13:13:27 -0500 |
| commit | 1e701e701304b3c3a3768ca83dd2ab7b9e88c77d (patch) | |
| tree | b9b045764ded7560371075d74fea34d6db611b3f /cpu/mpc85xx | |
| parent | 5c7ea64bb74a850a2b2303f853a8270695ad8602 (diff) | |
| download | u-boot-imx-1e701e701304b3c3a3768ca83dd2ab7b9e88c77d.zip u-boot-imx-1e701e701304b3c3a3768ca83dd2ab7b9e88c77d.tar.gz u-boot-imx-1e701e701304b3c3a3768ca83dd2ab7b9e88c77d.tar.bz2 | |
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 <urwithsughosh@gmail.com>
Diffstat (limited to 'cpu/mpc85xx')
| -rw-r--r-- | cpu/mpc85xx/start.S | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index e5cabca..ada6ea5 100644 --- a/cpu/mpc85xx/start.S +++ b/cpu/mpc85xx/start.S @@ -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@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: |