diff options
Diffstat (limited to 'arch/powerpc/kernel/head_fsl_booke.S')
| -rw-r--r-- | arch/powerpc/kernel/head_fsl_booke.S | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 7aecb39..d9cc2c2 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -73,8 +73,8 @@ _ENTRY(_start); /* We try to not make any assumptions about how the boot loader * setup or used the TLBs. We invalidate all mappings from the * boot loader and load a single entry in TLB1[0] to map the - * first 16M of kernel memory. Any boot info passed from the - * bootloader needs to live in this first 16M. + * first 64M of kernel memory. Any boot info passed from the + * bootloader needs to live in this first 64M. * * Requirement on bootloader: * - The page we're executing in needs to reside in TLB1 and @@ -167,7 +167,7 @@ skpinv: addi r6,r6,1 /* Increment */ mtspr SPRN_MAS0,r7 tlbre - /* Just modify the entry ID and EPN for the temp mapping */ + /* Just modify the entry ID, EPN and RPN for the temp mapping */ lis r7,0x1000 /* Set MAS0(TLBSEL) = 1 */ rlwimi r7,r5,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r5) */ mtspr SPRN_MAS0,r7 @@ -177,9 +177,12 @@ skpinv: addi r6,r6,1 /* Increment */ ori r6,r6,(MAS1_TSIZE(BOOKE_PAGESZ_4K))@l mtspr SPRN_MAS1,r6 mfspr r6,SPRN_MAS2 - li r7,0 /* temp EPN = 0 */ + lis r7,PHYSICAL_START@h rlwimi r7,r6,0,20,31 mtspr SPRN_MAS2,r7 + mfspr r6,SPRN_MAS3 + rlwimi r7,r6,0,20,31 + mtspr SPRN_MAS3,r7 tlbwe xori r6,r4,1 @@ -222,11 +225,11 @@ skpinv: addi r6,r6,1 /* Increment */ lis r6,0x1000 /* Set MAS0(TLBSEL) = TLB1(1), ESEL = 0 */ mtspr SPRN_MAS0,r6 lis r6,(MAS1_VALID|MAS1_IPROT)@h - ori r6,r6,(MAS1_TSIZE(BOOKE_PAGESZ_16M))@l + ori r6,r6,(MAS1_TSIZE(BOOKE_PAGESZ_64M))@l mtspr SPRN_MAS1,r6 li r7,0 - lis r6,KERNELBASE@h - ori r6,r6,KERNELBASE@l + lis r6,PAGE_OFFSET@h + ori r6,r6,PAGE_OFFSET@l rlwimi r6,r7,0,20,31 mtspr SPRN_MAS2,r6 li r7,(MAS3_SX|MAS3_SW|MAS3_SR) @@ -234,6 +237,9 @@ skpinv: addi r6,r6,1 /* Increment */ tlbwe /* 7. Jump to KERNELBASE mapping */ + lis r6,KERNELBASE@h + ori r6,r6,KERNELBASE@l + rlwimi r6,r7,0,20,31 lis r7,MSR_KERNEL@h ori r7,r7,MSR_KERNEL@l bl 1f /* Find our address */ |