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arch/arm64: fix create page table err

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arm64 only PA_BITS=52 level 0 can be used as BlockDescriptors

Signed-off-by: lipengfei28 <lipengfei28@xiaomi.com>
This commit is contained in:
lipengfei28
2025-06-05 11:52:44 +08:00
committed by Xiang Xiao
parent 1e63cf1c30
commit 84d99b7329
2 changed files with 11 additions and 2 deletions
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arch/arm64/src/common/arm64_mmu.c
+9 -2
View File
@@ -142,7 +142,9 @@
#define BASE_XLAT_TABLE_ALIGN NUM_BASE_LEVEL_ENTRIES * sizeof(uint64_t)
#endif
#if (CONFIG_ARM64_PA_BITS == 48)
#if (CONFIG_ARM64_PA_BITS == 52)
#define TCR_PS_BITS TCR_PS_BITS_4PB
#elif (CONFIG_ARM64_PA_BITS == 48)
#define TCR_PS_BITS TCR_PS_BITS_256TB
#elif (CONFIG_ARM64_PA_BITS == 44)
#define TCR_PS_BITS TCR_PS_BITS_16TB
@@ -267,6 +269,10 @@ static uint64_t get_tcr(int el)
tcr |= TCR_TG0_4K | TCR_SHARED_INNER | TCR_ORGN_WBWA |
TCR_IRGN_WBWA | TCR_TBI_FLAGS;
#if (CONFIG_ARM64_PA_BITS == 52)
tcr |= TCR_DS;
#endif
return tcr;
}
@@ -487,7 +493,8 @@ static void init_xlat_tables(const struct arm_mmu_region *region)
level_size = 1ULL << LEVEL_TO_VA_SIZE_SHIFT(level);
if (size >= level_size && !(virt & (level_size - 1)))
if (size >= level_size && !(virt & (level_size - 1))
&& ((level == 0 && CONFIG_ARM64_PA_BITS == 52) || level != 0))
{
/* Given range fits into level size,
* create block/page descriptor
arch/arm64/src/common/arm64_mmu.h
+2
View File
@@ -156,6 +156,7 @@
#define TCR_TG0_64K (1ULL << 14)
#define TCR_TG0_16K (2ULL << 14)
#define TCR_EPD1_DISABLE (1ULL << 23)
#define TCR_DS (1ULL << 59)
#define TCR_AS_SHIFT 36U
#define TCR_ASID_8 (0ULL << TCR_AS_SHIFT)
@@ -181,6 +182,7 @@
#define TCR_PS_BITS_4TB 0x3ULL
#define TCR_PS_BITS_16TB 0x4ULL
#define TCR_PS_BITS_256TB 0x5ULL
#define TCR_PS_BITS_4PB 0x6ULL
#define CTR_EL0_DMINLINE_SHIFT 16
#define CTR_EL0_DMINLINE_MASK BIT_MASK(4)