ArmPkg/Include/Chipset/ArmV7Mmu.h

   1 /** @file
   2 *
   3 *  Copyright (c) 2011-2012, ARM Limited. All rights reserved.
   4 *
   5 *  This program and the accompanying materials
   6 *  are licensed and made available under the terms and conditions of the BSD License
   7 *  which accompanies this distribution.  The full text of the license may be found at
   8 *  http://opensource.org/licenses/bsd-license.php
   9 *
  10 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 *
  13 **/
  14
  15 #ifndef __ARMV7_MMU_H_
  16 #define __ARMV7_MMU_H_
  17
  18 #define TTBR_NOT_OUTER_SHAREABLE             BIT5
  19 #define TTBR_RGN_OUTER_NON_CACHEABLE         0
  20 #define TTBR_RGN_OUTER_WRITE_BACK_ALLOC      BIT3
  21 #define TTBR_RGN_OUTER_WRITE_THROUGH         BIT4
  22 #define TTBR_RGN_OUTER_WRITE_BACK_NO_ALLOC   (BIT3|BIT4)
  23 #define TTBR_SHAREABLE                       BIT1
  24 #define TTBR_NON_SHAREABLE                   0
  25 #define TTBR_INNER_CACHEABLE                 BIT0
  26 #define TTBR_NON_INNER_CACHEABLE             BIT0
  27 #define TTBR_RGN_INNER_NON_CACHEABLE         0
  28 #define TTBR_RGN_INNER_WRITE_BACK_ALLOC      BIT6
  29 #define TTBR_RGN_INNER_WRITE_THROUGH         BIT0
  30 #define TTBR_RGN_INNER_WRITE_BACK_NO_ALLOC   (BIT0|BIT6)
  31
  32 #define TTBR_WRITE_THROUGH_NO_ALLOC     ( TTBR_RGN_OUTER_WRITE_BACK_ALLOC | TTBR_RGN_INNER_WRITE_BACK_ALLOC )
  33 #define TTBR_WRITE_BACK_NO_ALLOC        ( TTBR_RGN_OUTER_WRITE_BACK_NO_ALLOC | TTBR_RGN_INNER_WRITE_BACK_NO_ALLOC )
  34 #define TTBR_NON_CACHEABLE              ( TTBR_RGN_OUTER_NON_CACHEABLE | TTBR_RGN_INNER_NON_CACHEABLE )
  35 #define TTBR_WRITE_BACK_ALLOC           ( TTBR_RGN_OUTER_WRITE_BACK_ALLOC | TTBR_RGN_INNER_WRITE_BACK_ALLOC )
  36
  37
  38 #define TRANSLATION_TABLE_SECTION_COUNT                 4096
  39 #define TRANSLATION_TABLE_SECTION_SIZE                  (sizeof(UINT32) * TRANSLATION_TABLE_SECTION_COUNT)
  40 #define TRANSLATION_TABLE_SECTION_ALIGNMENT             (sizeof(UINT32) * TRANSLATION_TABLE_SECTION_COUNT)
  41 #define TRANSLATION_TABLE_SECTION_ALIGNMENT_MASK        (TRANSLATION_TABLE_SECTION_ALIGNMENT - 1)
  42
  43 #define TRANSLATION_TABLE_PAGE_COUNT                 256
  44 #define TRANSLATION_TABLE_PAGE_SIZE                  (sizeof(UINT32) * TRANSLATION_TABLE_PAGE_COUNT)
  45 #define TRANSLATION_TABLE_PAGE_ALIGNMENT             (sizeof(UINT32) * TRANSLATION_TABLE_PAGE_COUNT)
  46 #define TRANSLATION_TABLE_PAGE_ALIGNMENT_MASK        (TRANSLATION_TABLE_PAGE_ALIGNMENT - 1)
  47
  48 #define TRANSLATION_TABLE_ENTRY_FOR_VIRTUAL_ADDRESS(table, address) ((UINT32 *)(table) + (((UINTN)(address)) >> 20))
  49
  50 // Translation table descriptor types
  51 #define TT_DESCRIPTOR_SECTION_TYPE_MASK         ((1UL << 18) | (3UL << 0))
  52 #define TT_DESCRIPTOR_SECTION_TYPE_FAULT        (0UL << 0)
  53 #define TT_DESCRIPTOR_SECTION_TYPE_PAGE_TABLE   (1UL << 0)
  54 #define TT_DESCRIPTOR_SECTION_TYPE_SECTION      ((0UL << 18) | (2UL << 0))
  55 #define TT_DESCRIPTOR_SECTION_TYPE_SUPERSECTION ((1UL << 18) | (2UL << 0))
  56 #define TT_DESCRIPTOR_SECTION_TYPE_IS_PAGE_TABLE(Desc) (((Desc) & 3UL) == TT_DESCRIPTOR_SECTION_TYPE_PAGE_TABLE)
  57
  58 // Translation table descriptor types
  59 #define TT_DESCRIPTOR_PAGE_TYPE_MASK         (3UL << 0)
  60 #define TT_DESCRIPTOR_PAGE_TYPE_FAULT        (0UL << 0)
  61 #define TT_DESCRIPTOR_PAGE_TYPE_PAGE         (2UL << 0)
  62 #define TT_DESCRIPTOR_PAGE_TYPE_PAGE_XN      (3UL << 0)
  63 #define TT_DESCRIPTOR_PAGE_TYPE_LARGEPAGE    (1UL << 0)
  64
  65 // Section descriptor definitions
  66 #define TT_DESCRIPTOR_SECTION_SIZE                              (0x00100000)
  67
  68 #define TT_DESCRIPTOR_SECTION_NS_MASK                           (1UL << 19)
  69 #define TT_DESCRIPTOR_SECTION_NS                                (1UL << 19)
  70
  71 #define TT_DESCRIPTOR_SECTION_NG_MASK                           (1UL << 17)
  72 #define TT_DESCRIPTOR_SECTION_NG_GLOBAL                         (0UL << 17)
  73 #define TT_DESCRIPTOR_SECTION_NG_LOCAL                          (1UL << 17)
  74
  75 #define TT_DESCRIPTOR_PAGE_NG_MASK                              (1UL << 11)
  76 #define TT_DESCRIPTOR_PAGE_NG_GLOBAL                            (0UL << 11)
  77 #define TT_DESCRIPTOR_PAGE_NG_LOCAL                             (1UL << 11)
  78
  79 #define TT_DESCRIPTOR_SECTION_S_MASK                            (1UL << 16)
  80 #define TT_DESCRIPTOR_SECTION_S_NOT_SHARED                      (0UL << 16)
  81 #define TT_DESCRIPTOR_SECTION_S_SHARED                          (1UL << 16)
  82
  83 #define TT_DESCRIPTOR_PAGE_S_MASK                               (1UL << 10)
  84 #define TT_DESCRIPTOR_PAGE_S_NOT_SHARED                         (0UL << 10)
  85 #define TT_DESCRIPTOR_PAGE_S_SHARED                             (1UL << 10)
  86
  87 #define TT_DESCRIPTOR_SECTION_AP_MASK                           ((1UL << 15) | (3UL << 10))
  88 #define TT_DESCRIPTOR_SECTION_AP_NO_NO                          ((0UL << 15) | (0UL << 10))
  89 #define TT_DESCRIPTOR_SECTION_AP_RW_NO                          ((0UL << 15) | (1UL << 10))
  90 #define TT_DESCRIPTOR_SECTION_AP_RW_RO                          ((0UL << 15) | (2UL << 10))
  91 #define TT_DESCRIPTOR_SECTION_AP_RW_RW                          ((0UL << 15) | (3UL << 10))
  92 #define TT_DESCRIPTOR_SECTION_AP_RO_NO                          ((1UL << 15) | (1UL << 10))
  93 #define TT_DESCRIPTOR_SECTION_AP_RO_RO                          ((1UL << 15) | (3UL << 10))
  94
  95 #define TT_DESCRIPTOR_PAGE_AP_MASK                              ((1UL << 9) | (3UL << 4))
  96 #define TT_DESCRIPTOR_PAGE_AP_NO_NO                             ((0UL << 9) | (0UL << 4))
  97 #define TT_DESCRIPTOR_PAGE_AP_RW_NO                             ((0UL << 9) | (1UL << 4))
  98 #define TT_DESCRIPTOR_PAGE_AP_RW_RO                             ((0UL << 9) | (2UL << 4))
  99 #define TT_DESCRIPTOR_PAGE_AP_RW_RW                             ((0UL << 9) | (3UL << 4))
 100 #define TT_DESCRIPTOR_PAGE_AP_RO_NO                             ((1UL << 9) | (1UL << 4))
 101 #define TT_DESCRIPTOR_PAGE_AP_RO_RO                             ((1UL << 9) | (3UL << 4))
 102
 103 #define TT_DESCRIPTOR_SECTION_XN_MASK                           (0x1UL << 4)
 104 #define TT_DESCRIPTOR_PAGE_XN_MASK                              (0x1UL << 0)
 105 #define TT_DESCRIPTOR_LARGEPAGE_XN_MASK                         (0x1UL << 15)
 106
 107 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_MASK                   ((3UL << 12) | (1UL << 3) | (1UL << 2))
 108 #define TT_DESCRIPTOR_SECTION_CACHEABLE_MASK                      (1UL << 3)
 109 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_STRONGLY_ORDERED       ((0UL << 12) | (0UL << 3) | (0UL << 2))
 110 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_SHAREABLE_DEVICE       ((0UL << 12) | (0UL << 3) | (1UL << 2))
 111 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC ((0UL << 12) | (1UL << 3) | (0UL << 2))
 112 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_BACK_NO_ALLOC    ((0UL << 12) | (1UL << 3) | (1UL << 2))
 113 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_NON_CACHEABLE          ((1UL << 12) | (0UL << 3) | (0UL << 2))
 114 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_BACK_ALLOC       ((1UL << 12) | (1UL << 3) | (1UL << 2))
 115 #define TT_DESCRIPTOR_SECTION_CACHE_POLICY_NON_SHAREABLE_DEVICE   ((2UL << 12) | (0UL << 3) | (0UL << 2))
 116
 117 #define TT_DESCRIPTOR_PAGE_SIZE                               (0x00001000)
 118
 119 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_MASK                   ((3UL << 6) | (1UL << 3) | (1UL << 2))
 120 #define TT_DESCRIPTOR_PAGE_CACHEABLE_MASK                       (1UL << 3)
 121 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_STRONGLY_ORDERED       ((0UL << 6) | (0UL << 3) | (0UL << 2))
 122 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_SHAREABLE_DEVICE       ((0UL << 6) | (0UL << 3) | (1UL << 2))
 123 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC ((0UL << 6) | (1UL << 3) | (0UL << 2))
 124 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_BACK_NO_ALLOC    ((0UL << 6) | (1UL << 3) | (1UL << 2))
 125 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_NON_CACHEABLE          ((1UL << 6) | (0UL << 3) | (0UL << 2))
 126 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_BACK_ALLOC       ((1UL << 6) | (1UL << 3) | (1UL << 2))
 127 #define TT_DESCRIPTOR_PAGE_CACHE_POLICY_NON_SHAREABLE_DEVICE   ((2UL << 6) | (0UL << 3) | (0UL << 2))
 128
 129 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_MASK                   ((3UL << 12) | (1UL << 3) | (1UL << 2))
 130 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_STRONGLY_ORDERED       ((0UL << 12) | (0UL << 3) | (0UL << 2))
 131 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_SHAREABLE_DEVICE       ((0UL << 12) | (0UL << 3) | (1UL << 2))
 132 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC ((0UL << 12) | (1UL << 3) | (0UL << 2))
 133 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_WRITE_BACK_NO_ALLOC    ((0UL << 12) | (1UL << 3) | (1UL << 2))
 134 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_NON_CACHEABLE          ((1UL << 12) | (0UL << 3) | (0UL << 2))
 135 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_WRITE_BACK_ALLOC       ((1UL << 12) | (1UL << 3) | (1UL << 2))
 136 #define TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_NON_SHAREABLE_DEVICE   ((2UL << 12) | (0UL << 3) | (0UL << 2))
 137
 138 #define TT_DESCRIPTOR_CONVERT_TO_PAGE_AP(Desc)                  ((((Desc) & TT_DESCRIPTOR_SECTION_AP_MASK) >> 6) & TT_DESCRIPTOR_PAGE_AP_MASK)
 139 #define TT_DESCRIPTOR_CONVERT_TO_PAGE_NG(Desc)                  ((((Desc) & TT_DESCRIPTOR_SECTION_NG_MASK) >> 6) & TT_DESCRIPTOR_PAGE_NG_MASK)
 140 #define TT_DESCRIPTOR_CONVERT_TO_PAGE_S(Desc)                  ((((Desc) & TT_DESCRIPTOR_SECTION_S_MASK) >> 6) & TT_DESCRIPTOR_PAGE_S_MASK)
 141 #define TT_DESCRIPTOR_CONVERT_TO_PAGE_XN(Desc,IsLargePage)      ((IsLargePage)? \
 142                                                                     ((((Desc) & TT_DESCRIPTOR_SECTION_XN_MASK) >> 4) & TT_DESCRIPTOR_LARGEPAGE_XN_MASK):    \
 143                                                                     ((((Desc) & TT_DESCRIPTOR_SECTION_XN_MASK) << 11) & TT_DESCRIPTOR_PAGE_XN_MASK))
 144 #define TT_DESCRIPTOR_CONVERT_TO_PAGE_CACHE_POLICY(Desc,IsLargePage)      (IsLargePage? \
 145                                                                     (((Desc) & TT_DESCRIPTOR_SECTION_CACHE_POLICY_MASK) & TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_MASK): \
 146                                                                     (((((Desc) & (0x3 << 12)) >> 6) | (Desc & (0x3 << 2)))))
 147
 148 #define TT_DESCRIPTOR_CONVERT_TO_SECTION_AP(Desc)                  ((((Desc) & TT_DESCRIPTOR_PAGE_AP_MASK) << 6) & TT_DESCRIPTOR_SECTION_AP_MASK)
 149
 150 #define TT_DESCRIPTOR_CONVERT_TO_SECTION_CACHE_POLICY(Desc,IsLargePage)      (IsLargePage? \
 151                                                                     (((Desc) & TT_DESCRIPTOR_LARGEPAGE_CACHE_POLICY_MASK) & TT_DESCRIPTOR_SECTION_CACHE_POLICY_MASK): \
 152                                                                     (((((Desc) & (0x3 << 6)) << 6) | (Desc & (0x3 << 2)))))
 153
 154
 155 #define TT_DESCRIPTOR_SECTION_DOMAIN_MASK                       (0x0FUL << 5)
 156 #define TT_DESCRIPTOR_SECTION_DOMAIN(a)                         (((a) & 0x0FUL) << 5)
 157
 158 #define TT_DESCRIPTOR_SECTION_BASE_ADDRESS_MASK                 (0xFFF00000)
 159 #define TT_DESCRIPTOR_SECTION_PAGETABLE_ADDRESS_MASK            (0xFFFFFC00)
 160 #define TT_DESCRIPTOR_SECTION_BASE_ADDRESS(a)                   ((a) & TT_DESCRIPTOR_SECTION_BASE_ADDRESS_MASK)
 161 #define TT_DESCRIPTOR_SECTION_BASE_SHIFT                        20
 162
 163 #define TT_DESCRIPTOR_PAGE_BASE_ADDRESS_MASK                 (0xFFFFF000)
 164 #define TT_DESCRIPTOR_PAGE_INDEX_MASK                        (0x000FF000)
 165 #define TT_DESCRIPTOR_PAGE_BASE_ADDRESS(a)                   ((a) & TT_DESCRIPTOR_PAGE_BASE_ADDRESS_MASK)
 166 #define TT_DESCRIPTOR_PAGE_BASE_SHIFT                        12
 167
 168 #define TT_DESCRIPTOR_SECTION_WRITE_BACK(NonSecure)         (TT_DESCRIPTOR_SECTION_TYPE_SECTION                                                           | \
 169                                                             ((NonSecure) ?  TT_DESCRIPTOR_SECTION_NS : 0)    | \
 170                                                             TT_DESCRIPTOR_SECTION_NG_GLOBAL                         | \
 171                                                             TT_DESCRIPTOR_SECTION_S_NOT_SHARED                      | \
 172                                                             TT_DESCRIPTOR_SECTION_DOMAIN(0)                         | \
 173                                                             TT_DESCRIPTOR_SECTION_AP_RW_RW                          | \
 174                                                             TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_BACK_ALLOC)
 175 #define TT_DESCRIPTOR_SECTION_WRITE_THROUGH(NonSecure)      (TT_DESCRIPTOR_SECTION_TYPE_SECTION                                                           | \
 176                                                             ((NonSecure) ?  TT_DESCRIPTOR_SECTION_NS : 0)    | \
 177                                                             TT_DESCRIPTOR_SECTION_NG_GLOBAL                         | \
 178                                                             TT_DESCRIPTOR_SECTION_S_NOT_SHARED                      | \
 179                                                             TT_DESCRIPTOR_SECTION_DOMAIN(0)                         | \
 180                                                             TT_DESCRIPTOR_SECTION_AP_RW_RW                          | \
 181                                                             TT_DESCRIPTOR_SECTION_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC)
 182 #define TT_DESCRIPTOR_SECTION_DEVICE(NonSecure)             (TT_DESCRIPTOR_SECTION_TYPE_SECTION                                                           | \
 183                                                             ((NonSecure) ?  TT_DESCRIPTOR_SECTION_NS : 0)    | \
 184                                                             TT_DESCRIPTOR_SECTION_NG_GLOBAL                         | \
 185                                                             TT_DESCRIPTOR_SECTION_S_NOT_SHARED                      | \
 186                                                             TT_DESCRIPTOR_SECTION_DOMAIN(0)                         | \
 187                                                             TT_DESCRIPTOR_SECTION_AP_RW_RW                          | \
 188                                                             TT_DESCRIPTOR_SECTION_CACHE_POLICY_SHAREABLE_DEVICE)
 189 #define TT_DESCRIPTOR_SECTION_UNCACHED(NonSecure)          (TT_DESCRIPTOR_SECTION_TYPE_SECTION                                                           | \
 190                                                            ((NonSecure) ?  TT_DESCRIPTOR_SECTION_NS : 0)    | \
 191                                                            TT_DESCRIPTOR_SECTION_NG_GLOBAL                         | \
 192                                                            TT_DESCRIPTOR_SECTION_S_NOT_SHARED                      | \
 193                                                            TT_DESCRIPTOR_SECTION_DOMAIN(0)                         | \
 194                                                            TT_DESCRIPTOR_SECTION_AP_RW_RW                          | \
 195                                                            TT_DESCRIPTOR_SECTION_CACHE_POLICY_NON_CACHEABLE)
 196
 197 #define TT_DESCRIPTOR_PAGE_WRITE_BACK              (TT_DESCRIPTOR_PAGE_TYPE_PAGE                                                           | \
 198                                                         TT_DESCRIPTOR_PAGE_NG_GLOBAL                                                      | \
 199                                                         TT_DESCRIPTOR_PAGE_S_NOT_SHARED                                                   | \
 200                                                         TT_DESCRIPTOR_PAGE_AP_RW_RW                                                       | \
 201                                                         TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_BACK_ALLOC)
 202 #define TT_DESCRIPTOR_PAGE_WRITE_THROUGH           (TT_DESCRIPTOR_PAGE_TYPE_PAGE                                                           | \
 203                                                         TT_DESCRIPTOR_PAGE_NG_GLOBAL                                                      | \
 204                                                         TT_DESCRIPTOR_PAGE_S_NOT_SHARED                                                   | \
 205                                                         TT_DESCRIPTOR_PAGE_AP_RW_RW                                                       | \
 206                                                         TT_DESCRIPTOR_PAGE_CACHE_POLICY_WRITE_THROUGH_NO_ALLOC)
 207 #define TT_DESCRIPTOR_PAGE_DEVICE                  (TT_DESCRIPTOR_PAGE_TYPE_PAGE                                                           | \
 208                                                         TT_DESCRIPTOR_PAGE_NG_GLOBAL                                                      | \
 209                                                         TT_DESCRIPTOR_PAGE_S_NOT_SHARED                                                   | \
 210                                                         TT_DESCRIPTOR_PAGE_AP_RW_RW                                                       | \
 211                                                         TT_DESCRIPTOR_PAGE_CACHE_POLICY_SHAREABLE_DEVICE)
 212 #define TT_DESCRIPTOR_PAGE_UNCACHED                (TT_DESCRIPTOR_PAGE_TYPE_PAGE                                                           | \
 213                                                         TT_DESCRIPTOR_PAGE_NG_GLOBAL                                                      | \
 214                                                         TT_DESCRIPTOR_PAGE_S_NOT_SHARED                                                   | \
 215                                                         TT_DESCRIPTOR_PAGE_AP_RW_RW                                                       | \
 216                                                         TT_DESCRIPTOR_PAGE_CACHE_POLICY_NON_CACHEABLE)
 217
 218 #endif