diff options
Diffstat (limited to 'cpu/mpc85xx/release.S')
| -rw-r--r-- | cpu/mpc85xx/release.S | 122 |
1 files changed, 78 insertions, 44 deletions
diff --git a/cpu/mpc85xx/release.S b/cpu/mpc85xx/release.S index fe1775c..3b7366f 100644 --- a/cpu/mpc85xx/release.S +++ b/cpu/mpc85xx/release.S @@ -57,61 +57,91 @@ __secondary_start_page: lis r3,toreset(__spin_table)@h ori r3,r3,toreset(__spin_table)@l - /* r9 has the base address for the entry */ + /* r10 has the base address for the entry */ mfspr r0,SPRN_PIR mr r4,r0 - slwi r8,r4,4 - slwi r9,r4,3 - add r8,r8,r9 - add r9,r3,r8 - -#define EPAPR_MAGIC (0x65504150) -#define ENTRY_ADDR 0 -#define ENTRY_PIR 4 -#define ENTRY_R3 8 -#define ENTRY_R4 12 -#define ENTRY_R6 16 -#define ENTRY_R7 20 + slwi r8,r4,5 + add r10,r3,r8 + +#define EPAPR_MAGIC (0x45504150) +#define ENTRY_ADDR_UPPER 0 +#define ENTRY_ADDR_LOWER 4 +#define ENTRY_R3_UPPER 8 +#define ENTRY_R3_LOWER 12 +#define ENTRY_RESV 16 +#define ENTRY_PIR 20 +#define ENTRY_R6_UPPER 24 +#define ENTRY_R6_LOWER 28 +#define ENTRY_SIZE 32 /* setup the entry */ - li r4,0 + li r3,0 li r8,1 - lis r6,EPAPR_MAGIC@h - ori r6,r6,EPAPR_MAGIC@l - stw r0,ENTRY_PIR(r9) - stw r8,ENTRY_ADDR(r9) - stw r4,ENTRY_R3(r9) - stw r4,ENTRY_R4(r9) - stw r6,ENTRY_R6(r9) - stw r4,ENTRY_R7(r9) + stw r0,ENTRY_PIR(r10) + stw r3,ENTRY_ADDR_UPPER(r10) + stw r8,ENTRY_ADDR_LOWER(r10) + stw r3,ENTRY_R3_UPPER(r10) + stw r4,ENTRY_R3_LOWER(r10) + stw r3,ENTRY_R6_UPPER(r10) + stw r3,ENTRY_R6_LOWER(r10) + + /* setup mapping for AS = 1, and jump there */ + lis r11,(MAS0_TLBSEL(1)|MAS0_ESEL(1))@h + mtspr SPRN_MAS0,r11 + lis r11,(MAS1_VALID|MAS1_IPROT)@h + ori r11,r11,(MAS1_TS|MAS1_TSIZE(BOOKE_PAGESZ_4K))@l + mtspr SPRN_MAS1,r11 + lis r11,(0xfffff000|MAS2_I)@h + ori r11,r11,(0xfffff000|MAS2_I)@l + mtspr SPRN_MAS2,r11 + lis r11,(0xfffff000|MAS3_SX|MAS3_SW|MAS3_SR)@h + ori r11,r11,(0xfffff000|MAS3_SX|MAS3_SW|MAS3_SR)@l + mtspr SPRN_MAS3,r11 + tlbwe + + bl 1f +1: mflr r11 + addi r11,r11,28 + mfmsr r13 + ori r12,r13,MSR_IS|MSR_DS@l + + mtspr SPRN_SRR0,r11 + mtspr SPRN_SRR1,r12 + rfi /* spin waiting for addr */ -1: lwz r4,ENTRY_ADDR(r9) +2: + lwz r4,ENTRY_ADDR_LOWER(r10) andi. r11,r4,1 - bne 1b + bne 2b + + /* get the upper bits of the addr */ + lwz r11,ENTRY_ADDR_UPPER(r10) /* setup branch addr */ - mtctr r4 + mtspr SPRN_SRR0,r4 /* mark the entry as released */ li r8,3 - stw r8,ENTRY_ADDR(r9) + stw r8,ENTRY_ADDR_LOWER(r10) /* mask by ~64M to setup our tlb we will jump to */ - rlwinm r8,r4,0,0,5 + rlwinm r12,r4,0,0,5 - /* setup r3, r5, r6, r7 */ - lwz r3,ENTRY_R3(r9) - lwz r4,ENTRY_R4(r9) + /* setup r3, r4, r5, r6, r7, r8, r9 */ + lwz r3,ENTRY_R3_LOWER(r10) + li r4,0 li r5,0 - lwz r6,ENTRY_R6(r9) - lwz r7,ENTRY_R7(r9) + lwz r6,ENTRY_R6_LOWER(r10) + lis r7,(64*1024*1024)@h + li r8,0 + li r9,0 /* load up the pir */ - lwz r0,ENTRY_PIR(r9) + lwz r0,ENTRY_PIR(r10) mtspr SPRN_PIR,r0 mfspr r0,SPRN_PIR - stw r0,ENTRY_PIR(r9) + stw r0,ENTRY_PIR(r10) /* * Coming here, we know the cpu has one TLB mapping in TLB1[0] @@ -119,26 +149,30 @@ __secondary_start_page: * second mapping that maps addr 1:1 for 64M, and then we jump to * addr */ - lis r9,(MAS0_TLBSEL(1)|MAS0_ESEL(1))@h - mtspr SPRN_MAS0,r9 - lis r9,(MAS1_VALID|MAS1_IPROT)@h - ori r9,r9,(MAS1_TSIZE(BOOKE_PAGESZ_64M))@l - mtspr SPRN_MAS1,r9 + lis r10,(MAS0_TLBSEL(1)|MAS0_ESEL(0))@h + mtspr SPRN_MAS0,r10 + lis r10,(MAS1_VALID|MAS1_IPROT)@h + ori r10,r10,(MAS1_TSIZE(BOOKE_PAGESZ_64M))@l + mtspr SPRN_MAS1,r10 /* WIMGE = 0b00000 for now */ - mtspr SPRN_MAS2,r8 - ori r8,r8,(MAS3_SX|MAS3_SW|MAS3_SR) - mtspr SPRN_MAS3,r8 + mtspr SPRN_MAS2,r12 + ori r12,r12,(MAS3_SX|MAS3_SW|MAS3_SR) + mtspr SPRN_MAS3,r12 +#ifdef CONFIG_ENABLE_36BIT_PHYS + mtspr SPRN_MAS7,r11 +#endif tlbwe /* Now we have another mapping for this page, so we jump to that * mapping */ - bctr + mtspr SPRN_SRR1,r13 + rfi .align 3 .globl __spin_table __spin_table: - .space CONFIG_NR_CPUS*24 + .space CONFIG_NR_CPUS*ENTRY_SIZE /* Fill in the empty space. The actual reset vector is * the last word of the page */ |