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Diffstat (limited to 'cpu/mpc85xx/start.S')
-rw-r--r--cpu/mpc85xx/start.S24
1 files changed, 12 insertions, 12 deletions
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 2c98c2a..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 */
@@ -266,18 +268,17 @@ _start_e500:
*/
lis r3,CFG_INIT_RAM_ADDR@h
ori r3,r3,CFG_INIT_RAM_ADDR@l
- li r2,512 /* 512*32=16K */
+ li r2,(CFG_DCACHE_SIZE / (2 * CFG_CACHELINE_SIZE))
mtctr r2
li r0,0
1:
dcbz r0,r3
dcbtls 0,r0,r3
- addi r3,r3,32
+ addi r3,r3,CFG_CACHELINE_SIZE
bdnz 1b
/* 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:
@@ -701,6 +696,7 @@ in8:
.globl out8
out8:
stb r4,0x0000(r3)
+ sync
blr
/*------------------------------------------------------------------------------- */
@@ -710,6 +706,7 @@ out8:
.globl out16
out16:
sth r4,0x0000(r3)
+ sync
blr
/*------------------------------------------------------------------------------- */
@@ -719,6 +716,7 @@ out16:
.globl out16r
out16r:
sthbrx r4,r0,r3
+ sync
blr
/*------------------------------------------------------------------------------- */
@@ -728,6 +726,7 @@ out16r:
.globl out32
out32:
stw r4,0x0000(r3)
+ sync
blr
/*------------------------------------------------------------------------------- */
@@ -737,6 +736,7 @@ out32:
.globl out32r
out32r:
stwbrx r4,r0,r3
+ sync
blr
/*------------------------------------------------------------------------------- */
@@ -1061,11 +1061,11 @@ unlock_ram_in_cache:
/* invalidate the INIT_RAM section */
lis r3,(CFG_INIT_RAM_ADDR & ~31)@h
ori r3,r3,(CFG_INIT_RAM_ADDR & ~31)@l
- li r4,512
+ li r4,(CFG_DCACHE_SIZE / (2 * CFG_CACHELINE_SIZE))
mtctr r4
1: icbi r0,r3
dcbi r0,r3
- addi r3,r3,32
+ addi r3,r3,CFG_CACHELINE_SIZE
bdnz 1b
sync /* Wait for all icbi to complete on bus */
isync