| 1 | /** @file
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| 2 | *
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| 3 | * Copyright (c) 2011-2013, ARM Limited. All rights reserved.
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| 4 | *
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| 5 | * SPDX-License-Identifier: BSD-2-Clause-Patent
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| 6 | *
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| 7 | **/
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| 8 |
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| 9 | #ifndef ARMV7_MMU_H_
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| 10 | #define ARMV7_MMU_H_
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| 11 |
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| 12 | #define TTBR_NOT_OUTER_SHAREABLE BIT5
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| 13 | #define TTBR_RGN_OUTER_NON_CACHEABLE 0
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| 14 | #define TTBR_RGN_OUTER_WRITE_BACK_ALLOC BIT3
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| 15 | #define TTBR_RGN_OUTER_WRITE_THROUGH BIT4
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| 16 | #define TTBR_RGN_OUTER_WRITE_BACK_NO_ALLOC (BIT3|BIT4)
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| 17 | #define TTBR_SHAREABLE BIT1
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| 18 | #define TTBR_NON_SHAREABLE 0
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| 19 | #define TTBR_INNER_CACHEABLE BIT0
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| 20 | #define TTBR_INNER_NON_CACHEABLE 0
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| 21 | #define TTBR_RGN_INNER_NON_CACHEABLE 0
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| 22 | #define TTBR_RGN_INNER_WRITE_BACK_ALLOC BIT6
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| 23 | #define TTBR_RGN_INNER_WRITE_THROUGH BIT0
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| 24 | #define TTBR_RGN_INNER_WRITE_BACK_NO_ALLOC (BIT0|BIT6)
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| 25 |
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| 26 | #define TTBR_WRITE_THROUGH ( TTBR_RGN_OUTER_WRITE_THROUGH | TTBR_INNER_CACHEABLE | TTBR_SHAREABLE)
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| 27 | #define TTBR_WRITE_BACK_NO_ALLOC ( TTBR_RGN_OUTER_WRITE_BACK_NO_ALLOC | TTBR_INNER_CACHEABLE | TTBR_SHAREABLE)
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| 28 | #define TTBR_NON_CACHEABLE ( TTBR_RGN_OUTER_NON_CACHEABLE | TTBR_INNER_NON_CACHEABLE )
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| 29 | #define TTBR_WRITE_BACK_ALLOC ( TTBR_RGN_OUTER_WRITE_BACK_ALLOC | TTBR_INNER_CACHEABLE | TTBR_SHAREABLE)
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| 30 |
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| 31 | #define TTBR_MP_WRITE_THROUGH ( TTBR_RGN_OUTER_WRITE_THROUGH | TTBR_RGN_INNER_WRITE_THROUGH | TTBR_SHAREABLE)
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| 32 | #define TTBR_MP_WRITE_BACK_NO_ALLOC ( TTBR_RGN_OUTER_WRITE_BACK_NO_ALLOC | TTBR_RGN_INNER_WRITE_BACK_NO_ALLOC | TTBR_SHAREABLE)
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| 33 | #define TTBR_MP_NON_CACHEABLE ( TTBR_RGN_OUTER_NON_CACHEABLE | TTBR_RGN_INNER_NON_CACHEABLE )
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| 34 | #define TTBR_MP_WRITE_BACK_ALLOC ( TTBR_RGN_OUTER_WRITE_BACK_ALLOC | TTBR_RGN_INNER_WRITE_BACK_ALLOC | TTBR_SHAREABLE)
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| 35 |
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| 36 | #define TRANSLATION_TABLE_SECTION_COUNT 4096
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| 37 | #define TRANSLATION_TABLE_SECTION_SIZE (sizeof(UINT32) * TRANSLATION_TABLE_SECTION_COUNT)
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| 38 | #define TRANSLATION_TABLE_SECTION_ALIGNMENT (sizeof(UINT32) * TRANSLATION_TABLE_SECTION_COUNT)
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| 39 | #define TRANSLATION_TABLE_SECTION_ALIGNMENT_MASK (TRANSLATION_TABLE_SECTION_ALIGNMENT - 1)
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| 40 |
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| 41 | #define TRANSLATION_TABLE_PAGE_COUNT 256
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| 42 | #define TRANSLATION_TABLE_PAGE_SIZE (sizeof(UINT32) * TRANSLATION_TABLE_PAGE_COUNT)
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| 43 | #define TRANSLATION_TABLE_PAGE_ALIGNMENT (sizeof(UINT32) * TRANSLATION_TABLE_PAGE_COUNT)
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| 44 | #define TRANSLATION_TABLE_PAGE_ALIGNMENT_MASK (TRANSLATION_TABLE_PAGE_ALIGNMENT - 1)
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| 45 |
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| 46 | #define TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS(table, address) ((UINT32 *)(table) + (((UINTN)(address)) >> 20))
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| 47 |
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| 48 | // Translation table descriptor types
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| 49 | #define TT_DESCRIPTOR_SECTION_TYPE_MASK ((1UL << 18) | (3UL << 0))
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| 50 | #define TT_DESCRIPTOR_SECTION_TYPE_FAULT (0UL << 0)
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| 51 | #define TT_DESCRIPTOR_SECTION_TYPE_PAGE_TABLE (1UL << 0)
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| 52 | #define TT_DESCRIPTOR_SECTION_TYPE_SECTION ((0UL << 18) | (2UL << 0))
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| 53 | #define TT_DESCRIPTOR_SECTION_TYPE_SUPERSECTION ((1UL << 18) | (2UL << 0))
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| 54 | #define TT_DESCRIPTOR_SECTION_TYPE_IS_PAGE_TABLE(Desc) (((Desc) & 3UL) == TT_DESCRIPTOR_SECTION_TYPE_PAGE_TABLE)
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| 55 |
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| 56 | // Translation table descriptor types
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| 57 | #define TT_DESCRIPTOR_PAGE_TYPE_MASK (1UL << 1)
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| 58 | #define TT_DESCRIPTOR_PAGE_TYPE_FAULT (0UL << 1)
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| 59 | #define TT_DESCRIPTOR_PAGE_TYPE_PAGE (1UL << 1)
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| 60 |
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| 61 | // Section descriptor definitions
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| 62 | #define TT_DESCRIPTOR_SECTION_SIZE (0x00100000)
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| 63 |
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| 64 | #define TT_DESCRIPTOR_SECTION_NS_MASK (1UL << 19)
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| 65 | #define TT_DESCRIPTOR_SECTION_NS (1UL << 19)
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| 66 |
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| 67 | #define TT_DESCRIPTOR_SECTION_NG_MASK (1UL << 17)
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| 68 | #define TT_DESCRIPTOR_SECTION_NG_GLOBAL (0UL << 17)
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| 69 | #define TT_DESCRIPTOR_SECTION_NG_LOCAL (1UL << 17)
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| 70 |
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| 71 | #define TT_DESCRIPTOR_PAGE_NG_MASK (1UL << 11)
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| 72 | #define TT_DESCRIPTOR_PAGE_NG_GLOBAL (0UL << 11)
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| 73 | #define TT_DESCRIPTOR_PAGE_NG_LOCAL (1UL << 11)
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| 74 |
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| 75 | #define TT_DESCRIPTOR_SECTION_S_MASK (1UL << 16)
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| 76 | #define TT_DESCRIPTOR_SECTION_S_NOT_SHARED (0UL << 16)
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| 77 | #define TT_DESCRIPTOR_SECTION_S_SHARED (1UL << 16)
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| 78 |
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| 79 | #define TT_DESCRIPTOR_PAGE_S_MASK (1UL << 10)
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| 80 | #define TT_DESCRIPTOR_PAGE_S_NOT_SHARED (0UL << 10)
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| 81 | #define TT_DESCRIPTOR_PAGE_S_SHARED (1UL << 10)
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| 82 |
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| 83 | #define TT_DESCRIPTOR_SECTION_AP_MASK ((1UL << 15) | (1UL << 11))
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| 84 | #define TT_DESCRIPTOR_SECTION_AP_NO_RW ((0UL << 15) | (0UL << 11))
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| 85 | #define TT_DESCRIPTOR_SECTION_AP_RW_RW ((0UL << 15) | (1UL << 11))
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| 86 | #define TT_DESCRIPTOR_SECTION_AP_NO_RO ((1UL << 15) | (0UL << 11))
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| 87 | #define TT_DESCRIPTOR_SECTION_AP_RO_RO ((1UL << 15) | (1UL << 11))
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| 88 |
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| 89 | #define TT_DESCRIPTOR_SECTION_AF (1UL << 10)
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| 90 |
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| 91 | #define TT_DESCRIPTOR_PAGE_AP_MASK ((1UL << 9) | (1UL << 5))
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| 92 | #define TT_DESCRIPTOR_PAGE_AP_NO_RW ((0UL << 9) | (0UL << 5))
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| 93 | #define TT_DESCRIPTOR_PAGE_AP_RW_RW ((0UL << 9) | (1UL << 5))
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| 94 | #define TT_DESCRIPTOR_PAGE_AP_NO_RO ((1UL << 9) | (0UL << 5))
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| 95 | #define TT_DESCRIPTOR_PAGE_AP_RO_RO ((1UL << 9) | (1UL << 5))
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| 96 |
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| 97 | #define TT_DESCRIPTOR_PAGE_AF (1UL << 4)
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| 98 |
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| 99 | #define TT_DESCRIPTOR_SECTION_XN_MASK (0x1UL << 4)
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| 100 | #define TT_DESCRIPTOR_PAGE_XN_MASK (0x1UL << 0)
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| 101 |
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| 102 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_MASK ((3UL << 12) | (1UL << 3) | (1UL << 2))
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| 103 | #define TT_DESCRIPTOR_SECTION_CACHEABLE_MASK (1UL << 3)
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| 104 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_STRONGLY_ORDERED ((0UL << 12) | (0UL << 3) | (0UL << 2))
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| 105 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_SHAREABLE_DEVICE ((0UL << 12) | (0UL << 3) | (1UL << 2))
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| 106 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC ((0UL << 12) | (1UL << 3) | (0UL << 2))
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| 107 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_BACK_NO_ALLOC ((0UL << 12) | (1UL << 3) | (1UL << 2))
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| 108 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_NON_CACHEABLE ((1UL << 12) | (0UL << 3) | (0UL << 2))
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| 109 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_BACK_ALLOC ((1UL << 12) | (1UL << 3) | (1UL << 2))
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| 110 | #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_NON_SHAREABLE_DEVICE ((2UL << 12) | (0UL << 3) | (0UL << 2))
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| 111 |
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| 112 | #define TT_DESCRIPTOR_PAGE_SIZE (0x00001000)
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| 113 |
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| 114 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_MASK ((3UL << 6) | (1UL << 3) | (1UL << 2))
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| 115 | #define TT_DESCRIPTOR_PAGE_CACHEABLE_MASK (1UL << 3)
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| 116 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_STRONGLY_ORDERED ((0UL << 6) | (0UL << 3) | (0UL << 2))
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| 117 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_SHAREABLE_DEVICE ((0UL << 6) | (0UL << 3) | (1UL << 2))
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| 118 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC ((0UL << 6) | (1UL << 3) | (0UL << 2))
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| 119 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_BACK_NO_ALLOC ((0UL << 6) | (1UL << 3) | (1UL << 2))
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| 120 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_NON_CACHEABLE ((1UL << 6) | (0UL << 3) | (0UL << 2))
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| 121 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_BACK_ALLOC ((1UL << 6) | (1UL << 3) | (1UL << 2))
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| 122 | #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_NON_SHAREABLE_DEVICE ((2UL << 6) | (0UL << 3) | (0UL << 2))
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| 123 |
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| 124 | #define TT_DESCRIPTOR_CONVERT_TO_PAGE_AP(Desc) ((((Desc) & TT_DESCRIPTOR_SECTION_AP_MASK) >> 6) & TT_DESCRIPTOR_PAGE_AP_MASK)
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| 125 | #define TT_DESCRIPTOR_CONVERT_TO_PAGE_NG(Desc) ((((Desc) & TT_DESCRIPTOR_SECTION_NG_MASK) >> 6) & TT_DESCRIPTOR_PAGE_NG_MASK)
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| 126 | #define TT_DESCRIPTOR_CONVERT_TO_PAGE_S(Desc) ((((Desc) & TT_DESCRIPTOR_SECTION_S_MASK) >> 6) & TT_DESCRIPTOR_PAGE_S_MASK)
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| 127 | #define TT_DESCRIPTOR_CONVERT_TO_PAGE_AF(Desc) ((((Desc) & TT_DESCRIPTOR_SECTION_AF) >> 6) & TT_DESCRIPTOR_PAGE_AF)
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| 128 | #define TT_DESCRIPTOR_CONVERT_TO_PAGE_XN(Desc) ((((Desc) & TT_DESCRIPTOR_SECTION_XN_MASK) >> 4) & TT_DESCRIPTOR_PAGE_XN_MASK)
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| 129 | #define TT_DESCRIPTOR_CONVERT_TO_PAGE_CACHE_POLICY(Desc) ((((Desc) & (0x3 << 12)) >> 6) | (Desc & (0x3 << 2)))
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| 130 |
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| 131 | #define TT_DESCRIPTOR_CONVERT_TO_SECTION_AP(Desc) ((((Desc) & TT_DESCRIPTOR_PAGE_AP_MASK) << 6) & TT_DESCRIPTOR_SECTION_AP_MASK)
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| 132 | #define TT_DESCRIPTOR_CONVERT_TO_SECTION_S(Desc) ((((Desc) & TT_DESCRIPTOR_PAGE_S_MASK) << 6) & TT_DESCRIPTOR_SECTION_S_MASK)
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| 133 | #define TT_DESCRIPTOR_CONVERT_TO_SECTION_AF(Desc) ((((Desc) & TT_DESCRIPTOR_PAGE_AF) << 6) & TT_DESCRIPTOR_SECTION_AF)
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| 134 | #define TT_DESCRIPTOR_CONVERT_TO_SECTION_XN(Desc) ((((Desc) & TT_DESCRIPTOR_PAGE_XN_MASK) << 4) & TT_DESCRIPTOR_SECTION_XN_MASK)
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| 135 | #define TT_DESCRIPTOR_CONVERT_TO_SECTION_CACHE_POLICY(Desc) ((((Desc) & (0x3 << 6)) << 6) | (Desc & (0x3 << 2)))
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| 136 |
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| 137 | #define TT_DESCRIPTOR_SECTION_ATTRIBUTE_MASK (TT_DESCRIPTOR_SECTION_NS_MASK | TT_DESCRIPTOR_SECTION_NG_MASK | \
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| 138 | TT_DESCRIPTOR_SECTION_S_MASK | TT_DESCRIPTOR_SECTION_AP_MASK | \
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| 139 | TT_DESCRIPTOR_SECTION_AF | \
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| 140 | TT_DESCRIPTOR_SECTION_XN_MASK | TT_DESCRIPTOR_SECTION_CACHE_POLICY_MASK)
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| 141 |
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| 142 | #define TT_DESCRIPTOR_PAGE_ATTRIBUTE_MASK (TT_DESCRIPTOR_PAGE_NG_MASK | TT_DESCRIPTOR_PAGE_S_MASK | \
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| 143 | TT_DESCRIPTOR_PAGE_AP_MASK | TT_DESCRIPTOR_PAGE_XN_MASK | \
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| 144 | TT_DESCRIPTOR_PAGE_AF | \
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| 145 | TT_DESCRIPTOR_PAGE_CACHE_POLICY_MASK)
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| 146 |
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| 147 | #define TT_DESCRIPTOR_SECTION_DOMAIN_MASK (0x0FUL << 5)
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| 148 | #define TT_DESCRIPTOR_SECTION_DOMAIN(a) (((a) & 0x0FUL) << 5)
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| 149 |
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| 150 | #define TT_DESCRIPTOR_SECTION_BASE_ADDRESS_MASK (0xFFF00000)
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| 151 | #define TT_DESCRIPTOR_SECTION_PAGETABLE_ADDRESS_MASK (0xFFFFFC00)
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| 152 | #define TT_DESCRIPTOR_SECTION_BASE_ADDRESS(a) ((a) & TT_DESCRIPTOR_SECTION_BASE_ADDRESS_MASK)
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| 153 | #define TT_DESCRIPTOR_SECTION_BASE_SHIFT 20
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| 154 |
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| 155 | #define TT_DESCRIPTOR_PAGE_BASE_ADDRESS_MASK (0xFFFFF000)
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| 156 | #define TT_DESCRIPTOR_PAGE_INDEX_MASK (0x000FF000)
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| 157 | #define TT_DESCRIPTOR_PAGE_BASE_ADDRESS(a) ((a) & TT_DESCRIPTOR_PAGE_BASE_ADDRESS_MASK)
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| 158 | #define TT_DESCRIPTOR_PAGE_BASE_SHIFT 12
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| 159 |
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| 160 | #define TT_DESCRIPTOR_SECTION_DEFAULT (TT_DESCRIPTOR_SECTION_TYPE_SECTION | \
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| 161 | TT_DESCRIPTOR_SECTION_NG_GLOBAL | \
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| 162 | TT_DESCRIPTOR_SECTION_S_SHARED | \
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| 163 | TT_DESCRIPTOR_SECTION_DOMAIN(0) | \
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| 164 | TT_DESCRIPTOR_SECTION_AP_RW_RW | \
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| 165 | TT_DESCRIPTOR_SECTION_AF)
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| 166 |
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| 167 | #define TT_DESCRIPTOR_SECTION_WRITE_BACK (TT_DESCRIPTOR_SECTION_DEFAULT | \
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| 168 | TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_BACK_ALLOC)
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| 169 |
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| 170 | #define TT_DESCRIPTOR_SECTION_WRITE_THROUGH (TT_DESCRIPTOR_SECTION_DEFAULT | \
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| 171 | TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC)
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| 172 |
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| 173 | #define TT_DESCRIPTOR_SECTION_DEVICE (TT_DESCRIPTOR_SECTION_DEFAULT | \
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| 174 | TT_DESCRIPTOR_SECTION_CACHE_POLICY_SHAREABLE_DEVICE)
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| 175 |
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| 176 | #define TT_DESCRIPTOR_SECTION_UNCACHED (TT_DESCRIPTOR_SECTION_DEFAULT | \
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| 177 | TT_DESCRIPTOR_SECTION_CACHE_POLICY_NON_CACHEABLE)
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| 178 |
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| 179 | #define TT_DESCRIPTOR_PAGE_WRITE_BACK (TT_DESCRIPTOR_PAGE_TYPE_PAGE | \
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| 180 | TT_DESCRIPTOR_PAGE_NG_GLOBAL | \
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| 181 | TT_DESCRIPTOR_PAGE_S_SHARED | \
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| 182 | TT_DESCRIPTOR_PAGE_AP_RW_RW | \
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| 183 | TT_DESCRIPTOR_PAGE_AF | \
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| 184 | TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_BACK_ALLOC)
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| 185 | #define TT_DESCRIPTOR_PAGE_WRITE_THROUGH (TT_DESCRIPTOR_PAGE_TYPE_PAGE | \
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| 186 | TT_DESCRIPTOR_PAGE_NG_GLOBAL | \
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| 187 | TT_DESCRIPTOR_PAGE_S_SHARED | \
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| 188 | TT_DESCRIPTOR_PAGE_AP_RW_RW | \
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| 189 | TT_DESCRIPTOR_PAGE_AF | \
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| 190 | TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC)
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| 191 | #define TT_DESCRIPTOR_PAGE_DEVICE (TT_DESCRIPTOR_PAGE_TYPE_PAGE | \
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| 192 | TT_DESCRIPTOR_PAGE_NG_GLOBAL | \
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| 193 | TT_DESCRIPTOR_PAGE_S_NOT_SHARED | \
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| 194 | TT_DESCRIPTOR_PAGE_AP_RW_RW | \
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| 195 | TT_DESCRIPTOR_PAGE_AF | \
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| 196 | TT_DESCRIPTOR_PAGE_XN_MASK | \
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| 197 | TT_DESCRIPTOR_PAGE_CACHE_POLICY_SHAREABLE_DEVICE)
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| 198 | #define TT_DESCRIPTOR_PAGE_UNCACHED (TT_DESCRIPTOR_PAGE_TYPE_PAGE | \
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| 199 | TT_DESCRIPTOR_PAGE_NG_GLOBAL | \
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| 200 | TT_DESCRIPTOR_PAGE_S_NOT_SHARED | \
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| 201 | TT_DESCRIPTOR_PAGE_AP_RW_RW | \
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| 202 | TT_DESCRIPTOR_PAGE_AF | \
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| 203 | TT_DESCRIPTOR_PAGE_CACHE_POLICY_NON_CACHEABLE)
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| 204 |
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| 205 | // First Level Descriptors
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| 206 | typedef UINT32 ARM_FIRST_LEVEL_DESCRIPTOR;
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| 207 |
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| 208 | // Second Level Descriptors
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| 209 | typedef UINT32 ARM_PAGE_TABLE_ENTRY;
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| 210 |
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| 211 | UINT32
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| 212 | ConvertSectionAttributesToPageAttributes (
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| 213 | IN UINT32 SectionAttributes
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| 214 | );
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| 215 |
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| 216 | #endif // ARMV7_MMU_H_
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