diff options
Diffstat (limited to 'arch/arm/mach-stm32mp/cpu.c')
| -rw-r--r-- | arch/arm/mach-stm32mp/cpu.c | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c index bc2db535be..897ec13ad8 100644 --- a/arch/arm/mach-stm32mp/cpu.c +++ b/arch/arm/mach-stm32mp/cpu.c @@ -212,6 +212,35 @@ u32 get_bootmode(void) } /* + * weak function overidde: set the DDR/SYSRAM executable before to enable the + * MMU and configure DACR, for early early_enable_caches (SPL or pre-reloc) + */ +void dram_bank_mmu_setup(int bank) +{ + struct bd_info *bd = gd->bd; + int i; + phys_addr_t start; + phys_size_t size; + + if (IS_ENABLED(CONFIG_SPL_BUILD)) { + start = ALIGN_DOWN(STM32_SYSRAM_BASE, MMU_SECTION_SIZE); + size = ALIGN(STM32_SYSRAM_SIZE, MMU_SECTION_SIZE); + } else if (gd->flags & GD_FLG_RELOC) { + /* bd->bi_dram is available only after relocation */ + start = bd->bi_dram[bank].start; + size = bd->bi_dram[bank].size; + } else { + /* mark cacheable and executable the beggining of the DDR */ + start = STM32_DDR_BASE; + size = CONFIG_DDR_CACHEABLE_SIZE; + } + + for (i = start >> MMU_SECTION_SHIFT; + i < (start >> MMU_SECTION_SHIFT) + (size >> MMU_SECTION_SHIFT); + i++) + set_section_dcache(i, DCACHE_DEFAULT_OPTION); +} +/* * initialize the MMU and activate cache in SPL or in U-Boot pre-reloc stage * MMU/TLB is updated in enable_caches() for U-Boot after relocation * or is deactivated in U-Boot entry function start.S::cpu_init_cp15 @@ -228,17 +257,8 @@ static void early_enable_caches(void) gd->arch.tlb_addr = (unsigned long)&early_tlb; } + /* enable MMU (default configuration) */ dcache_enable(); - - if (IS_ENABLED(CONFIG_SPL_BUILD)) - mmu_set_region_dcache_behaviour( - ALIGN_DOWN(STM32_SYSRAM_BASE, MMU_SECTION_SIZE), - ALIGN(STM32_SYSRAM_SIZE, MMU_SECTION_SIZE), - DCACHE_DEFAULT_OPTION); - else - mmu_set_region_dcache_behaviour(STM32_DDR_BASE, - CONFIG_DDR_CACHEABLE_SIZE, - DCACHE_DEFAULT_OPTION); } /* |