diff options
Diffstat (limited to 'arch/powerpc/kernel/head_8xx.S')
| -rw-r--r-- | arch/powerpc/kernel/head_8xx.S | 39 |
1 files changed, 17 insertions, 22 deletions
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index c9e3d54e6a6f..d607f4b53e0f 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -749,6 +749,23 @@ start_here: rfi /* Load up the kernel context */ 2: +#ifdef CONFIG_PIN_TLB_IMMR + lis r0, MD_TWAM@h + oris r0, r0, 0x1f00 + mtspr SPRN_MD_CTR, r0 + LOAD_REG_IMMEDIATE(r0, VIRT_IMMR_BASE | MD_EVALID) + tlbie r0 + mtspr SPRN_MD_EPN, r0 + LOAD_REG_IMMEDIATE(r0, MD_SVALID | MD_PS512K | MD_GUARDED) + mtspr SPRN_MD_TWC, r0 + mfspr r0, SPRN_IMMR + rlwinm r0, r0, 0, 0xfff80000 + ori r0, r0, 0xf0 | _PAGE_DIRTY | _PAGE_SPS | _PAGE_SH | \ + _PAGE_NO_CACHE | _PAGE_PRESENT + mtspr SPRN_MD_RPN, r0 + lis r0, (MD_TWAM | MD_RSV4I)@h + mtspr SPRN_MD_CTR, r0 +#endif tlbia /* Clear all TLB entries */ sync /* wait for tlbia/tlbie to finish */ @@ -797,28 +814,6 @@ initial_mmu: ori r8, r8, MD_APG_INIT@l mtspr SPRN_MD_AP, r8 - /* Map a 512k page for the IMMR to get the processor - * internal registers (among other things). - */ -#ifdef CONFIG_PIN_TLB_IMMR - oris r10, r10, MD_RSV4I@h - ori r10, r10, 0x1c00 - mtspr SPRN_MD_CTR, r10 - - mfspr r9, 638 /* Get current IMMR */ - andis. r9, r9, 0xfff8 /* Get 512 kbytes boundary */ - - lis r8, VIRT_IMMR_BASE@h /* Create vaddr for TLB */ - ori r8, r8, MD_EVALID /* Mark it valid */ - mtspr SPRN_MD_EPN, r8 - li r8, MD_PS512K | MD_GUARDED /* Set 512k byte page */ - ori r8, r8, MD_SVALID /* Make it valid */ - mtspr SPRN_MD_TWC, r8 - mr r8, r9 /* Create paddr for TLB */ - ori r8, r8, MI_BOOTINIT|0x2 /* Inhibit cache -- Cort */ - mtspr SPRN_MD_RPN, r8 -#endif - /* Now map the lower RAM (up to 32 Mbytes) into the ITLB. */ #ifdef CONFIG_PIN_TLB_TEXT lis r8, MI_RSV4I@h |