196 lines
7.4 KiB
C
196 lines
7.4 KiB
C
/** @file
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*
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* Copyright (c) 2011-2021, Arm Limited. All rights reserved.<BR>
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#ifndef AARCH64_MMU_H_
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#define AARCH64_MMU_H_
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//
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// Memory Attribute Indirection register Definitions
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//
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#define MAIR_ATTR_DEVICE_MEMORY 0x0ULL
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#define MAIR_ATTR_NORMAL_MEMORY_NON_CACHEABLE 0x44ULL
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#define MAIR_ATTR_NORMAL_MEMORY_WRITE_THROUGH 0xBBULL
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#define MAIR_ATTR_NORMAL_MEMORY_WRITE_BACK 0xFFULL
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#define MAIR_ATTR(n, value) ((value) << (((n) >> 2)*8))
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//
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// Long-descriptor Translation Table format
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//
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// Return the smallest offset from the table level.
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// The first offset starts at 12bit. There are 4 levels of 9-bit address range from level 3 to level 0
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#define TT_ADDRESS_OFFSET_AT_LEVEL(TableLevel) (12 + ((3 - (TableLevel)) * 9))
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#define TT_BLOCK_ENTRY_SIZE_AT_LEVEL(Level) (1ULL << TT_ADDRESS_OFFSET_AT_LEVEL(Level))
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// Get the associated entry in the given Translation Table
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#define TT_GET_ENTRY_FOR_ADDRESS(TranslationTable, Level, Address) \
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((UINTN)(TranslationTable) + ((((UINTN)(Address) >> TT_ADDRESS_OFFSET_AT_LEVEL(Level)) & (BIT9-1)) * sizeof(UINT64)))
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// Return the smallest address granularity from the table level.
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// The first offset starts at 12bit. There are 4 levels of 9-bit address range from level 3 to level 0
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#define TT_ADDRESS_AT_LEVEL(TableLevel) (1ULL << TT_ADDRESS_OFFSET_AT_LEVEL(TableLevel))
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#define TT_LAST_BLOCK_ADDRESS(TranslationTable, EntryCount) \
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((UINT64*)((EFI_PHYSICAL_ADDRESS)(TranslationTable) + (((EntryCount) - 1) * sizeof(UINT64))))
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// There are 512 entries per table when 4K Granularity
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#define TT_ENTRY_COUNT 512
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#define TT_ALIGNMENT_BLOCK_ENTRY BIT12
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#define TT_ALIGNMENT_DESCRIPTION_TABLE BIT12
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#define TT_ADDRESS_MASK_BLOCK_ENTRY (0xFFFFFFFFFULL << 12)
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#define TT_ADDRESS_MASK_DESCRIPTION_TABLE (0xFFFFFFFFFULL << 12)
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#define TT_TYPE_MASK 0x3
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#define TT_TYPE_TABLE_ENTRY 0x3
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#define TT_TYPE_BLOCK_ENTRY 0x1
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#define TT_TYPE_BLOCK_ENTRY_LEVEL3 0x3
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#define TT_ATTR_INDX_MASK (0x7 << 2)
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#define TT_ATTR_INDX_DEVICE_MEMORY (0x0 << 2)
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#define TT_ATTR_INDX_MEMORY_NON_CACHEABLE (0x1 << 2)
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#define TT_ATTR_INDX_MEMORY_WRITE_THROUGH (0x2 << 2)
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#define TT_ATTR_INDX_MEMORY_WRITE_BACK (0x3 << 2)
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#define TT_AP_MASK (0x3UL << 6)
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#define TT_AP_NO_RW (0x0UL << 6)
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#define TT_AP_RW_RW (0x1UL << 6)
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#define TT_AP_NO_RO (0x2UL << 6)
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#define TT_AP_RO_RO (0x3UL << 6)
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#define TT_NS BIT5
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#define TT_AF BIT10
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#define TT_SH_NON_SHAREABLE (0x0 << 8)
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#define TT_SH_OUTER_SHAREABLE (0x2 << 8)
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#define TT_SH_INNER_SHAREABLE (0x3 << 8)
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#define TT_SH_MASK (0x3 << 8)
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#define TT_PXN_MASK BIT53
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#define TT_UXN_MASK BIT54 // EL1&0
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#define TT_XN_MASK BIT54 // EL2 / EL3
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#define TT_ATTRIBUTES_MASK ((0xFFFULL << 52) | (0x3FFULL << 2))
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#define TT_TABLE_PXN BIT59
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#define TT_TABLE_UXN BIT60 // EL1&0
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#define TT_TABLE_XN BIT60 // EL2 / EL3
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#define TT_TABLE_NS BIT63
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#define TT_TABLE_AP_MASK (BIT62 | BIT61)
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#define TT_TABLE_AP_NO_PERMISSION (0x0ULL << 61)
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#define TT_TABLE_AP_EL0_NO_ACCESS (0x1ULL << 61)
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#define TT_TABLE_AP_NO_WRITE_ACCESS (0x2ULL << 61)
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//
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// Translation Control Register
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//
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#define TCR_T0SZ_MASK 0x3FUL
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#define TCR_PS_4GB (0UL << 16)
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#define TCR_PS_64GB (1UL << 16)
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#define TCR_PS_1TB (2UL << 16)
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#define TCR_PS_4TB (3UL << 16)
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#define TCR_PS_16TB (4UL << 16)
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#define TCR_PS_256TB (5UL << 16)
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#define TCR_TG0_4KB (0UL << 14)
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#define TCR_TG1_4KB (2UL << 30)
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#define TCR_IPS_4GB (0ULL << 32)
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#define TCR_IPS_64GB (1ULL << 32)
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#define TCR_IPS_1TB (2ULL << 32)
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#define TCR_IPS_4TB (3ULL << 32)
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#define TCR_IPS_16TB (4ULL << 32)
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#define TCR_IPS_256TB (5ULL << 32)
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#define TCR_EPD1 (1UL << 23)
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#define TTBR_ASID_FIELD (48)
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#define TTBR_ASID_MASK (0xFF << TTBR_ASID_FIELD)
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#define TTBR_BADDR_MASK (0xFFFFFFFFFFFF ) // The width of this field depends on the values in TxSZ. Addr occupies bottom 48bits
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#define TCR_EL1_T0SZ_FIELD (0)
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#define TCR_EL1_EPD0_FIELD (7)
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#define TCR_EL1_IRGN0_FIELD (8)
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#define TCR_EL1_ORGN0_FIELD (10)
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#define TCR_EL1_SH0_FIELD (12)
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#define TCR_EL1_TG0_FIELD (14)
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#define TCR_EL1_T1SZ_FIELD (16)
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#define TCR_EL1_A1_FIELD (22)
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#define TCR_EL1_EPD1_FIELD (23)
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#define TCR_EL1_IRGN1_FIELD (24)
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#define TCR_EL1_ORGN1_FIELD (26)
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#define TCR_EL1_SH1_FIELD (28)
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#define TCR_EL1_TG1_FIELD (30)
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#define TCR_EL1_IPS_FIELD (32)
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#define TCR_EL1_AS_FIELD (36)
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#define TCR_EL1_TBI0_FIELD (37)
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#define TCR_EL1_TBI1_FIELD (38)
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#define TCR_EL1_T0SZ_MASK (0x1FUL << TCR_EL1_T0SZ_FIELD)
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#define TCR_EL1_EPD0_MASK (0x01UL << TCR_EL1_EPD0_FIELD)
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#define TCR_EL1_IRGN0_MASK (0x03UL << TCR_EL1_IRGN0_FIELD)
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#define TCR_EL1_ORGN0_MASK (0x03UL << TCR_EL1_ORGN0_FIELD)
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#define TCR_EL1_SH0_MASK (0x03UL << TCR_EL1_SH0_FIELD)
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#define TCR_EL1_TG0_MASK (0x01UL << TCR_EL1_TG0_FIELD)
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#define TCR_EL1_T1SZ_MASK (0x1FUL << TCR_EL1_T1SZ_FIELD)
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#define TCR_EL1_A1_MASK (0x01UL << TCR_EL1_A1_FIELD)
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#define TCR_EL1_EPD1_MASK (0x01UL << TCR_EL1_EPD1_FIELD)
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#define TCR_EL1_IRGN1_MASK (0x03UL << TCR_EL1_IRGN1_FIELD)
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#define TCR_EL1_ORGN1_MASK (0x03UL << TCR_EL1_ORGN1_FIELD)
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#define TCR_EL1_SH1_MASK (0x03UL << TCR_EL1_SH1_FIELD)
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#define TCR_EL1_TG1_MASK (0x01UL << TCR_EL1_TG1_FIELD)
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#define TCR_EL1_IPS_MASK (0x07UL << TCR_EL1_IPS_FIELD)
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#define TCR_EL1_AS_MASK (0x01UL << TCR_EL1_AS_FIELD)
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#define TCR_EL1_TBI0_MASK (0x01UL << TCR_EL1_TBI0_FIELD)
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#define TCR_EL1_TBI1_MASK (0x01UL << TCR_EL1_TBI1_FIELD)
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#define TCR_EL23_T0SZ_FIELD (0)
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#define TCR_EL23_IRGN0_FIELD (8)
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#define TCR_EL23_ORGN0_FIELD (10)
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#define TCR_EL23_SH0_FIELD (12)
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#define TCR_EL23_TG0_FIELD (14)
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#define TCR_EL23_PS_FIELD (16)
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#define TCR_EL23_T0SZ_MASK (0x1FUL << TCR_EL23_T0SZ_FIELD)
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#define TCR_EL23_IRGN0_MASK (0x03UL << TCR_EL23_IRGN0_FIELD)
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#define TCR_EL23_ORGN0_MASK (0x03UL << TCR_EL23_ORGN0_FIELD)
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#define TCR_EL23_SH0_MASK (0x03UL << TCR_EL23_SH0_FIELD)
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#define TCR_EL23_TG0_MASK (0x01UL << TCR_EL23_TG0_FIELD)
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#define TCR_EL23_PS_MASK (0x07UL << TCR_EL23_PS_FIELD)
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#define TCR_RGN_OUTER_NON_CACHEABLE (0x0UL << 10)
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#define TCR_RGN_OUTER_WRITE_BACK_ALLOC (0x1UL << 10)
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#define TCR_RGN_OUTER_WRITE_THROUGH (0x2UL << 10)
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#define TCR_RGN_OUTER_WRITE_BACK_NO_ALLOC (0x3UL << 10)
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#define TCR_RGN_INNER_NON_CACHEABLE (0x0UL << 8)
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#define TCR_RGN_INNER_WRITE_BACK_ALLOC (0x1UL << 8)
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#define TCR_RGN_INNER_WRITE_THROUGH (0x2UL << 8)
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#define TCR_RGN_INNER_WRITE_BACK_NO_ALLOC (0x3UL << 8)
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#define TCR_SH_NON_SHAREABLE (0x0UL << 12)
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#define TCR_SH_OUTER_SHAREABLE (0x2UL << 12)
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#define TCR_SH_INNER_SHAREABLE (0x3UL << 12)
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#define TCR_PASZ_32BITS_4GB (0x0UL)
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#define TCR_PASZ_36BITS_64GB (0x1UL)
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#define TCR_PASZ_40BITS_1TB (0x2UL)
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#define TCR_PASZ_42BITS_4TB (0x3UL)
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#define TCR_PASZ_44BITS_16TB (0x4UL)
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#define TCR_PASZ_48BITS_256TB (0x5UL)
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// The value written to the T*SZ fields are defined as 2^(64-T*SZ). So a 39Bit
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// Virtual address range for 512GB of virtual space sets T*SZ to 25
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#define INPUT_ADDRESS_SIZE_TO_TXSZ(a) (64 - a)
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// Uses LPAE Page Table format
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#endif // AARCH64_MMU_H_
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