diff options
| -rw-r--r-- | arch/arm/cpu/mmu_64.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/cpu/mmu_64.c b/arch/arm/cpu/mmu_64.c index cdc4825422..1d5a5355c6 100644 --- a/arch/arm/cpu/mmu_64.c +++ b/arch/arm/cpu/mmu_64.c @@ -192,8 +192,20 @@ static void mmu_enable(void) */ void __mmu_init(bool mmu_on) { + uint64_t *ttb = get_ttb(); struct memory_bank *bank; + if (!request_sdram_region("ttb", (unsigned long)ttb, + ARM_EARLY_PAGETABLE_SIZE)) + /* + * This can mean that: + * - the early MMU code has put the ttb into a place + * which we don't have inside our available memory + * - Somebody else has occupied the ttb region which means + * the ttb will get corrupted. + */ + pr_crit("Can't request SDRAM region for ttb at %p\n", ttb); + for_each_memory_bank(bank) { struct resource *rsv; resource_size_t pos; |