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pgtable-hwdef.h
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1 /*
2  * Copyright (C) 2012 ARM Ltd.
3  *
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.
7  *
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.
12  *
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/>.
15  */
16 #ifndef __ASM_PGTABLE_HWDEF_H
17 #define __ASM_PGTABLE_HWDEF_H
18 
19 #ifdef CONFIG_ARM64_64K_PAGES
20 #include <asm/pgtable-2level-hwdef.h>
21 #else
22 #include <asm/pgtable-3level-hwdef.h>
23 #endif
24 
25 /*
26  * Hardware page table definitions.
27  *
28  * Level 2 descriptor (PMD).
29  */
30 #define PMD_TYPE_MASK (_AT(pmdval_t, 3) << 0)
31 #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0)
32 #define PMD_TYPE_TABLE (_AT(pmdval_t, 3) << 0)
33 #define PMD_TYPE_SECT (_AT(pmdval_t, 1) << 0)
34 
35 /*
36  * Section
37  */
38 #define PMD_SECT_S (_AT(pmdval_t, 3) << 8)
39 #define PMD_SECT_AF (_AT(pmdval_t, 1) << 10)
40 #define PMD_SECT_NG (_AT(pmdval_t, 1) << 11)
41 #define PMD_SECT_PXN (_AT(pmdval_t, 1) << 53)
42 #define PMD_SECT_UXN (_AT(pmdval_t, 1) << 54)
43 
44 /*
45  * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
46  */
47 #define PMD_ATTRINDX(t) (_AT(pmdval_t, (t)) << 2)
48 #define PMD_ATTRINDX_MASK (_AT(pmdval_t, 7) << 2)
49 
50 /*
51  * Level 3 descriptor (PTE).
52  */
53 #define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0)
54 #define PTE_TYPE_FAULT (_AT(pteval_t, 0) << 0)
55 #define PTE_TYPE_PAGE (_AT(pteval_t, 3) << 0)
56 #define PTE_USER (_AT(pteval_t, 1) << 6) /* AP[1] */
57 #define PTE_RDONLY (_AT(pteval_t, 1) << 7) /* AP[2] */
58 #define PTE_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */
59 #define PTE_AF (_AT(pteval_t, 1) << 10) /* Access Flag */
60 #define PTE_NG (_AT(pteval_t, 1) << 11) /* nG */
61 #define PTE_PXN (_AT(pteval_t, 1) << 53) /* Privileged XN */
62 #define PTE_UXN (_AT(pteval_t, 1) << 54) /* User XN */
63 
64 /*
65  * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
66  */
67 #define PTE_ATTRINDX(t) (_AT(pteval_t, (t)) << 2)
68 #define PTE_ATTRINDX_MASK (_AT(pteval_t, 7) << 2)
69 
70 /*
71  * 40-bit physical address supported.
72  */
73 #define PHYS_MASK_SHIFT (40)
74 #define PHYS_MASK ((UL(1) << PHYS_MASK_SHIFT) - 1)
75 
76 /*
77  * TCR flags.
78  */
79 #define TCR_TxSZ(x) (((UL(64) - (x)) << 16) | ((UL(64) - (x)) << 0))
80 #define TCR_IRGN_NC ((UL(0) << 8) | (UL(0) << 24))
81 #define TCR_IRGN_WBWA ((UL(1) << 8) | (UL(1) << 24))
82 #define TCR_IRGN_WT ((UL(2) << 8) | (UL(2) << 24))
83 #define TCR_IRGN_WBnWA ((UL(3) << 8) | (UL(3) << 24))
84 #define TCR_IRGN_MASK ((UL(3) << 8) | (UL(3) << 24))
85 #define TCR_ORGN_NC ((UL(0) << 10) | (UL(0) << 26))
86 #define TCR_ORGN_WBWA ((UL(1) << 10) | (UL(1) << 26))
87 #define TCR_ORGN_WT ((UL(2) << 10) | (UL(2) << 26))
88 #define TCR_ORGN_WBnWA ((UL(3) << 10) | (UL(3) << 26))
89 #define TCR_ORGN_MASK ((UL(3) << 10) | (UL(3) << 26))
90 #define TCR_SHARED ((UL(3) << 12) | (UL(3) << 28))
91 #define TCR_TG0_64K (UL(1) << 14)
92 #define TCR_TG1_64K (UL(1) << 30)
93 #define TCR_IPS_40BIT (UL(2) << 32)
94 #define TCR_ASID16 (UL(1) << 36)
95 
96 #endif