diff options
Diffstat (limited to 'cpu/mpc85xx/start.S')
| -rw-r--r-- | cpu/mpc85xx/start.S | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index 386fa81..af18c1c 100644 --- a/cpu/mpc85xx/start.S +++ b/cpu/mpc85xx/start.S @@ -108,13 +108,41 @@ _start_e500: mtspr L1CSR2,r2 #endif - lis r2,L1CSR0_CPE@H /* enable parity */ - ori r2,r2,L1CSR0_DCE - mtspr L1CSR0,r2 /* enable L1 Dcache */ + /* Enable/invalidate the I-Cache */ + lis r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h + ori r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l + mtspr SPRN_L1CSR1,r2 +1: + mfspr r3,SPRN_L1CSR1 + and. r1,r3,r2 + bne 1b + + lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h + ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l + mtspr SPRN_L1CSR1,r3 isync - mtspr L1CSR1,r2 /* enable L1 Icache */ +2: + mfspr r3,SPRN_L1CSR1 + andi. r1,r3,L1CSR1_ICE@l + beq 2b + + /* Enable/invalidate the D-Cache */ + lis r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h + ori r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l + mtspr SPRN_L1CSR0,r2 +1: + mfspr r3,SPRN_L1CSR0 + and. r1,r3,r2 + bne 1b + + lis r3,(L1CSR0_CPE|L1CSR0_DCE)@h + ori r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l + mtspr SPRN_L1CSR0,r3 isync - msync +2: + mfspr r3,SPRN_L1CSR0 + andi. r1,r3,L1CSR0_DCE@l + beq 2b /* Setup interrupt vectors */ lis r1,TEXT_BASE@h |