diff options
| author | Greg Watson <jarrah@users.sourceforge.net> | 2003-11-02 16:57:39 +0000 |
|---|---|---|
| committer | Greg Watson <jarrah@users.sourceforge.net> | 2003-11-02 16:57:39 +0000 |
| commit | 36ab698a013528c864933b4e8c836ac1dcd87138 (patch) | |
| tree | f42c05e58ec56405b21daa54c90e3bdf0255a127 | |
| parent | 40cba39e34ccbba6fd6ea7a3183b133f094a2466 (diff) | |
get cache setup right
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1238 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
| -rw-r--r-- | src/cpu/ppc/ppc4xx/ppc4xx.inc | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/cpu/ppc/ppc4xx/ppc4xx.inc b/src/cpu/ppc/ppc4xx/ppc4xx.inc index a0b2bc8333..bbd8949a62 100644 --- a/src/cpu/ppc/ppc4xx/ppc4xx.inc +++ b/src/cpu/ppc/ppc4xx/ppc4xx.inc @@ -57,17 +57,17 @@ #include "ppc4xx.h" - addi r4,r0,0x0000 + li r4,0x0000 mtspr sgr,r4 mtspr dcwr,r4 mtesr r4 /* clear Exception Syndrome Reg */ mttcr r4 /* clear Timer Control Reg */ mtxer r4 /* clear Fixed-Point Exception Reg */ mtevpr r4 /* clear Exception Vector Prefix Reg */ - addi r4,r0,0x1000 /* set ME bit (Machine Exceptions) */ + li r4,0x1000 /* set ME bit (Machine Exceptions) */ oris r4,r4,0x0002 /* set CE bit (Critical Exceptions) */ - mtmsr r4 /* change MSR */ - addi r4,r0,(0xFFFF-0x10000) /* set r4 to 0xFFFFFFFF (status in */ +// mtmsr r4 /* change MSR */ + li r4,(0xFFFF-0x10000) /* set r4 to 0xFFFFFFFF (status in */ /* the dbsr is cleared by setting */ /* bits to 1) */ mtdbsr r4 /* clear/reset the dbsr */ @@ -95,16 +95,16 @@ /* * Enable dcache region containing DCACHE_RAM_BASE - * and set region to write-back + * On reset all regions are set to write-back, so we + * just leave them alone. */ lis r4, DCACHE_RAM_BASE@ha addi r4, r4, DCACHE_RAM_BASE@l srwi r4, r4, 27 + subfic r4, r4, 31 li r0, 1 slw r4, r0, r4 - nor r0, r4, r4 - mtdcr dcwr, r0 /* data cache write-back */ mtdccr r4 /* data cache enable */ sync |