2 * Copyright (C) 2012 ARM Ltd.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 #ifndef __ASM_PGTABLE_HWDEF_H
17 #define __ASM_PGTABLE_HWDEF_H
19 #define PTRS_PER_PTE (1 << (PAGE_SHIFT - 3))
22 * PMD_SHIFT determines the size a level 2 page table entry can map.
24 #if CONFIG_PGTABLE_LEVELS > 2
25 #define PMD_SHIFT ((PAGE_SHIFT - 3) * 2 + 3)
26 #define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
27 #define PMD_MASK (~(PMD_SIZE-1))
28 #define PTRS_PER_PMD PTRS_PER_PTE
32 * PUD_SHIFT determines the size a level 1 page table entry can map.
34 #if CONFIG_PGTABLE_LEVELS > 3
35 #define PUD_SHIFT ((PAGE_SHIFT - 3) * 3 + 3)
36 #define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
37 #define PUD_MASK (~(PUD_SIZE-1))
38 #define PTRS_PER_PUD PTRS_PER_PTE
42 * PGDIR_SHIFT determines the size a top-level page table entry can map
43 * (depending on the configuration, this level can be 0, 1 or 2).
45 #define PGDIR_SHIFT ((PAGE_SHIFT - 3) * CONFIG_PGTABLE_LEVELS + 3)
46 #define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
47 #define PGDIR_MASK (~(PGDIR_SIZE-1))
48 #define PTRS_PER_PGD (1 << (VA_BITS - PGDIR_SHIFT))
51 * Section address mask and size definitions.
53 #define SECTION_SHIFT PMD_SHIFT
54 #define SECTION_SIZE (_AC(1, UL) << SECTION_SHIFT)
55 #define SECTION_MASK (~(SECTION_SIZE-1))
58 * Contiguous page definitions.
60 #define CONT_PTES (_AC(1, UL) << CONT_SHIFT)
61 /* the the numerical offset of the PTE within a range of CONT_PTES */
62 #define CONT_RANGE_OFFSET(addr) (((addr)>>PAGE_SHIFT)&(CONT_PTES-1))
65 * Hardware page table definitions.
67 * Level 1 descriptor (PUD).
69 #define PUD_TYPE_TABLE (_AT(pudval_t, 3) << 0)
70 #define PUD_TABLE_BIT (_AT(pgdval_t, 1) << 1)
71 #define PUD_TYPE_MASK (_AT(pgdval_t, 3) << 0)
72 #define PUD_TYPE_SECT (_AT(pgdval_t, 1) << 0)
75 * Level 2 descriptor (PMD).
77 #define PMD_TYPE_MASK (_AT(pmdval_t, 3) << 0)
78 #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0)
79 #define PMD_TYPE_TABLE (_AT(pmdval_t, 3) << 0)
80 #define PMD_TYPE_SECT (_AT(pmdval_t, 1) << 0)
81 #define PMD_TABLE_BIT (_AT(pmdval_t, 1) << 1)
86 #define PMD_SECT_VALID (_AT(pmdval_t, 1) << 0)
87 #define PMD_SECT_PROT_NONE (_AT(pmdval_t, 1) << 58)
88 #define PMD_SECT_USER (_AT(pmdval_t, 1) << 6) /* AP[1] */
89 #define PMD_SECT_RDONLY (_AT(pmdval_t, 1) << 7) /* AP[2] */
90 #define PMD_SECT_S (_AT(pmdval_t, 3) << 8)
91 #define PMD_SECT_AF (_AT(pmdval_t, 1) << 10)
92 #define PMD_SECT_NG (_AT(pmdval_t, 1) << 11)
93 #define PMD_SECT_CONT (_AT(pmdval_t, 1) << 52)
94 #define PMD_SECT_PXN (_AT(pmdval_t, 1) << 53)
95 #define PMD_SECT_UXN (_AT(pmdval_t, 1) << 54)
98 * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
100 #define PMD_ATTRINDX(t) (_AT(pmdval_t, (t)) << 2)
101 #define PMD_ATTRINDX_MASK (_AT(pmdval_t, 7) << 2)
104 * Level 3 descriptor (PTE).
106 #define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0)
107 #define PTE_TYPE_FAULT (_AT(pteval_t, 0) << 0)
108 #define PTE_TYPE_PAGE (_AT(pteval_t, 3) << 0)
109 #define PTE_TABLE_BIT (_AT(pteval_t, 1) << 1)
110 #define PTE_USER (_AT(pteval_t, 1) << 6) /* AP[1] */
111 #define PTE_RDONLY (_AT(pteval_t, 1) << 7) /* AP[2] */
112 #define PTE_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */
113 #define PTE_AF (_AT(pteval_t, 1) << 10) /* Access Flag */
114 #define PTE_NG (_AT(pteval_t, 1) << 11) /* nG */
115 #define PTE_DBM (_AT(pteval_t, 1) << 51) /* Dirty Bit Management */
116 #define PTE_CONT (_AT(pteval_t, 1) << 52) /* Contiguous range */
117 #define PTE_PXN (_AT(pteval_t, 1) << 53) /* Privileged XN */
118 #define PTE_UXN (_AT(pteval_t, 1) << 54) /* User XN */
121 * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
123 #define PTE_ATTRINDX(t) (_AT(pteval_t, (t)) << 2)
124 #define PTE_ATTRINDX_MASK (_AT(pteval_t, 7) << 2)
127 * 2nd stage PTE definitions
129 #define PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[2:1] */
130 #define PTE_S2_RDWR (_AT(pteval_t, 3) << 6) /* HAP[2:1] */
132 #define PMD_S2_RDONLY (_AT(pmdval_t, 1) << 6) /* HAP[2:1] */
133 #define PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */
136 * Memory Attribute override for Stage-2 (MemAttr[3:0])
138 #define PTE_S2_MEMATTR(t) (_AT(pteval_t, (t)) << 2)
139 #define PTE_S2_MEMATTR_MASK (_AT(pteval_t, 0xf) << 2)
142 * EL2/HYP PTE/PMD definitions
144 #define PMD_HYP PMD_SECT_USER
145 #define PTE_HYP PTE_USER
148 * Highest possible physical address supported.
150 #define PHYS_MASK_SHIFT (48)
151 #define PHYS_MASK ((UL(1) << PHYS_MASK_SHIFT) - 1)
156 #define TCR_T0SZ_OFFSET 0
157 #define TCR_T1SZ_OFFSET 16
158 #define TCR_T0SZ(x) ((UL(64) - (x)) << TCR_T0SZ_OFFSET)
159 #define TCR_T1SZ(x) ((UL(64) - (x)) << TCR_T1SZ_OFFSET)
160 #define TCR_TxSZ(x) (TCR_T0SZ(x) | TCR_T1SZ(x))
161 #define TCR_TxSZ_WIDTH 6
162 #define TCR_IRGN_NC ((UL(0) << 8) | (UL(0) << 24))
163 #define TCR_IRGN_WBWA ((UL(1) << 8) | (UL(1) << 24))
164 #define TCR_IRGN_WT ((UL(2) << 8) | (UL(2) << 24))
165 #define TCR_IRGN_WBnWA ((UL(3) << 8) | (UL(3) << 24))
166 #define TCR_IRGN_MASK ((UL(3) << 8) | (UL(3) << 24))
167 #define TCR_ORGN_NC ((UL(0) << 10) | (UL(0) << 26))
168 #define TCR_ORGN_WBWA ((UL(1) << 10) | (UL(1) << 26))
169 #define TCR_ORGN_WT ((UL(2) << 10) | (UL(2) << 26))
170 #define TCR_ORGN_WBnWA ((UL(3) << 10) | (UL(3) << 26))
171 #define TCR_ORGN_MASK ((UL(3) << 10) | (UL(3) << 26))
172 #define TCR_SHARED ((UL(3) << 12) | (UL(3) << 28))
173 #define TCR_TG0_4K (UL(0) << 14)
174 #define TCR_TG0_64K (UL(1) << 14)
175 #define TCR_TG0_16K (UL(2) << 14)
176 #define TCR_TG1_16K (UL(1) << 30)
177 #define TCR_TG1_4K (UL(2) << 30)
178 #define TCR_TG1_64K (UL(3) << 30)
179 #define TCR_ASID16 (UL(1) << 36)
180 #define TCR_TBI0 (UL(1) << 37)
181 #define TCR_HA (UL(1) << 39)
182 #define TCR_HD (UL(1) << 40)