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Diffstat (limited to 'payloads/libpayload/arch')
-rw-r--r--payloads/libpayload/arch/arm64/mmu.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/payloads/libpayload/arch/arm64/mmu.c b/payloads/libpayload/arch/arm64/mmu.c
index d84f969dc6..c860ee0fc8 100644
--- a/payloads/libpayload/arch/arm64/mmu.c
+++ b/payloads/libpayload/arch/arm64/mmu.c
@@ -172,6 +172,7 @@ static uint64_t init_xlat_table(uint64_t base_addr,
uint64_t size,
uint64_t tag)
{
+ uint64_t l0_index = (base_addr & L0_ADDR_MASK) >> L0_ADDR_SHIFT;
uint64_t l1_index = (base_addr & L1_ADDR_MASK) >> L1_ADDR_SHIFT;
uint64_t l2_index = (base_addr & L2_ADDR_MASK) >> L2_ADDR_SHIFT;
uint64_t l3_index = (base_addr & L3_ADDR_MASK) >> L3_ADDR_SHIFT;
@@ -179,12 +180,12 @@ static uint64_t init_xlat_table(uint64_t base_addr,
uint64_t desc;
uint64_t attr = get_block_attr(tag);
- /* L1 table lookup
- * If VA has bits more than L2 can resolve, lookup starts at L1
- * Assumption: we don't need L0 table in coreboot */
- if (BITS_PER_VA > L1_ADDR_SHIFT) {
- if ((size >= L1_XLAT_SIZE) &&
- IS_ALIGNED(base_addr, (1UL << L1_ADDR_SHIFT))) {
+ /* L0 entry stores a table descriptor (doesn't support blocks) */
+ table = get_next_level_table(&table[l0_index], L1_XLAT_SIZE);
+
+ /* L1 table lookup */
+ if ((size >= L1_XLAT_SIZE) &&
+ IS_ALIGNED(base_addr, (1UL << L1_ADDR_SHIFT))) {
/* If block address is aligned and size is greater than
* or equal to size addressed by each L1 entry, we can
* directly store a block desc */
@@ -192,13 +193,12 @@ static uint64_t init_xlat_table(uint64_t base_addr,
table[l1_index] = desc;
/* L2 lookup is not required */
return L1_XLAT_SIZE;
- }
- table = get_next_level_table(&table[l1_index], L2_XLAT_SIZE);
}
- /* L2 table lookup
- * If lookup was performed at L1, L2 table addr is obtained from L1 desc
- * else, lookup starts at ttbr address */
+ /* L1 entry stores a table descriptor */
+ table = get_next_level_table(&table[l1_index], L2_XLAT_SIZE);
+
+ /* L2 table lookup */
if ((size >= L2_XLAT_SIZE) &&
IS_ALIGNED(base_addr, (1UL << L2_ADDR_SHIFT))) {
/* If block address is aligned and size is greater than
@@ -226,6 +226,7 @@ static void sanity_check(uint64_t addr, uint64_t size)
{
assert(!(addr & GRANULE_SIZE_MASK) &&
!(size & GRANULE_SIZE_MASK) &&
+ (addr + size < (1UL << BITS_PER_VA)) &&
size >= GRANULE_SIZE);
}
@@ -344,7 +345,7 @@ void mmu_enable(void)
/* Initialize TCR flags */
raw_write_tcr_current(TCR_TOSZ | TCR_IRGN0_NM_WBWAC | TCR_ORGN0_NM_WBWAC |
- TCR_SH0_IS | TCR_TG0_4KB | TCR_PS_64GB |
+ TCR_SH0_IS | TCR_TG0_4KB | TCR_PS_256TB |
TCR_TBI_USED);
/* Initialize TTBR */