diff options
| -rw-r--r-- | arch/arm/cpu/armv8/cache_v8.c | 28 | ||||
| -rw-r--r-- | arch/arm/include/asm/armv8/mmu.h | 11 |
2 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/cache_v8.c b/arch/arm/cpu/armv8/cache_v8.c index 74c78cb2fb0..9b3c37dae82 100644 --- a/arch/arm/cpu/armv8/cache_v8.c +++ b/arch/arm/cpu/armv8/cache_v8.c @@ -58,6 +58,34 @@ static int get_effective_el(void) return el; } +int mem_map_from_dram_banks(unsigned int index, unsigned int len, u64 attrs) +{ + unsigned int i; + int ret = fdtdec_setup_memory_banksize(); + + if (ret) { + log_err("%s: Failed to setup dram banks\n", __func__); + return ret; + } + + if (index + CONFIG_NR_DRAM_BANKS >= len) { + log_err("%s: Provided mem_map array has insufficient size for DRAM entries\n", + __func__); + return -ENOMEM; + } + + for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { + mem_map[index].virt = gd->bd->bi_dram[i].start; + mem_map[index].phys = gd->bd->bi_dram[i].start; + mem_map[index].size = gd->bd->bi_dram[i].size; + mem_map[index].attrs = attrs; + index++; + } + + memset(&mem_map[index], 0, sizeof(mem_map[index])); + + return 0; +} u64 get_tcr(u64 *pips, u64 *pva_bits) { int el = get_effective_el(); diff --git a/arch/arm/include/asm/armv8/mmu.h b/arch/arm/include/asm/armv8/mmu.h index 3807c702fb6..6e7a3366844 100644 --- a/arch/arm/include/asm/armv8/mmu.h +++ b/arch/arm/include/asm/armv8/mmu.h @@ -194,8 +194,19 @@ struct mm_region { u64 attrs; }; +/* Used as the memory map for MMU configuration by mmu_setup */ extern struct mm_region *mem_map; void setup_pgtables(void); + +/** + * mem_map_from_dram_banks() - Populate mem_map with entries corresponding to + * dram banks as per the gd. This should be called prior to mmu_setup. + * + * @index: The entry in mem_map to start the over-write + * @len: The size of mem_map + */ +int mem_map_from_dram_banks(unsigned int index, unsigned int len, u64 attrs); + u64 get_tcr(u64 *pips, u64 *pva_bits); /** |