diff options
Diffstat (limited to 'arch/powerpc/mm/nohash/8xx.c')
| -rw-r--r-- | arch/powerpc/mm/nohash/8xx.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/powerpc/mm/nohash/8xx.c b/arch/powerpc/mm/nohash/8xx.c index b27017109a36..44cbde7612cb 100644 --- a/arch/powerpc/mm/nohash/8xx.c +++ b/arch/powerpc/mm/nohash/8xx.c @@ -66,7 +66,7 @@ void __init MMU_init_hw(void) if (IS_ENABLED(CONFIG_PIN_TLB_DATA)) { unsigned long ctr = mfspr(SPRN_MD_CTR) & 0xfe000000; unsigned long flags = 0xf0 | MD_SPS16K | _PAGE_SH | _PAGE_DIRTY; - int i = IS_ENABLED(CONFIG_PIN_TLB_IMMR) ? 29 : 28; + int i = 28; unsigned long addr = 0; unsigned long mem = total_lowmem; @@ -81,12 +81,19 @@ void __init MMU_init_hw(void) } } -static void __init mmu_mapin_immr(void) +static bool immr_is_mapped __initdata; + +void __init mmu_mapin_immr(void) { unsigned long p = PHYS_IMMR_BASE; unsigned long v = VIRT_IMMR_BASE; int offset; + if (immr_is_mapped) + return; + + immr_is_mapped = true; + for (offset = 0; offset < IMMR_SIZE; offset += PAGE_SIZE) map_kernel_page(v + offset, p + offset, PAGE_KERNEL_NCG); } @@ -122,9 +129,10 @@ unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top) { unsigned long mapped; + mmu_mapin_immr(); + if (__map_without_ltlbs) { mapped = 0; - mmu_mapin_immr(); if (!IS_ENABLED(CONFIG_PIN_TLB_IMMR)) patch_instruction_site(&patch__dtlbmiss_immr_jmp, ppc_inst(PPC_INST_NOP)); if (!IS_ENABLED(CONFIG_PIN_TLB_TEXT)) @@ -143,7 +151,6 @@ unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top) */ mmu_mapin_ram_chunk(0, einittext8, PAGE_KERNEL_X); mmu_mapin_ram_chunk(einittext8, mapped, PAGE_KERNEL); - mmu_mapin_immr(); } mmu_patch_cmp_limit(&patch__dtlbmiss_linmem_top, mapped); |