diff options
Diffstat (limited to 'arch/arm/cpu/armv8/cache_v8.c')
| -rw-r--r-- | arch/arm/cpu/armv8/cache_v8.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index c3f8dac648b..631d9efa5e1 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -339,6 +339,31 @@ static void map_range(u64 virt, u64 phys, u64 size, int level, } } +void mmu_map_region(phys_addr_t addr, u64 size, bool emergency) +{ + u64 va_bits; + int level = 0; + u64 attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_INNER_SHARE; + + attrs |= PTE_TYPE_BLOCK | PTE_BLOCK_AF; + + get_tcr(NULL, &va_bits); + if (va_bits < 39) + level = 1; + + if (emergency) + map_range(addr, addr, size, level, + (u64 *)gd->arch.tlb_emerg, attrs); + + /* Switch pagetables while we update the primary one */ + __asm_switch_ttbr(gd->arch.tlb_emerg); + + map_range(addr, addr, size, level, + (u64 *)gd->arch.tlb_addr, attrs); + + __asm_switch_ttbr(gd->arch.tlb_addr); +} + static void add_map(struct mm_region *map) { u64 attrs = map->attrs | PTE_TYPE_BLOCK | PTE_BLOCK_AF; |