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 1 descriptor (PUD).
29  */
30 
31 #define PUD_TABLE_BIT		(_AT(pgdval_t, 1) << 1)
32 
33 /*
34  * Level 2 descriptor (PMD).
35  */
36 #define PMD_TYPE_MASK		(_AT(pmdval_t, 3) << 0)
37 #define PMD_TYPE_FAULT		(_AT(pmdval_t, 0) << 0)
38 #define PMD_TYPE_TABLE		(_AT(pmdval_t, 3) << 0)
39 #define PMD_TYPE_SECT		(_AT(pmdval_t, 1) << 0)
40 #define PMD_TABLE_BIT		(_AT(pmdval_t, 1) << 1)
41 
42 /*
43  * Section
44  */
45 #define PMD_SECT_VALID		(_AT(pmdval_t, 1) << 0)
46 #define PMD_SECT_PROT_NONE	(_AT(pmdval_t, 1) << 58)
47 #define PMD_SECT_USER		(_AT(pmdval_t, 1) << 6)		/* AP[1] */
48 #define PMD_SECT_RDONLY		(_AT(pmdval_t, 1) << 7)		/* AP[2] */
49 #define PMD_SECT_S		(_AT(pmdval_t, 3) << 8)
50 #define PMD_SECT_AF		(_AT(pmdval_t, 1) << 10)
51 #define PMD_SECT_NG		(_AT(pmdval_t, 1) << 11)
52 #define PMD_SECT_PXN		(_AT(pmdval_t, 1) << 53)
53 #define PMD_SECT_UXN		(_AT(pmdval_t, 1) << 54)
54 
55 /*
56  * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
57  */
58 #define PMD_ATTRINDX(t)		(_AT(pmdval_t, (t)) << 2)
59 #define PMD_ATTRINDX_MASK	(_AT(pmdval_t, 7) << 2)
60 
61 /*
62  * Level 3 descriptor (PTE).
63  */
64 #define PTE_TYPE_MASK		(_AT(pteval_t, 3) << 0)
65 #define PTE_TYPE_FAULT		(_AT(pteval_t, 0) << 0)
66 #define PTE_TYPE_PAGE		(_AT(pteval_t, 3) << 0)
67 #define PTE_TABLE_BIT		(_AT(pteval_t, 1) << 1)
68 #define PTE_USER		(_AT(pteval_t, 1) << 6)		/* AP[1] */
69 #define PTE_RDONLY		(_AT(pteval_t, 1) << 7)		/* AP[2] */
70 #define PTE_SHARED		(_AT(pteval_t, 3) << 8)		/* SH[1:0], inner shareable */
71 #define PTE_AF			(_AT(pteval_t, 1) << 10)	/* Access Flag */
72 #define PTE_NG			(_AT(pteval_t, 1) << 11)	/* nG */
73 #define PTE_PXN			(_AT(pteval_t, 1) << 53)	/* Privileged XN */
74 #define PTE_UXN			(_AT(pteval_t, 1) << 54)	/* User XN */
75 
76 /*
77  * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
78  */
79 #define PTE_ATTRINDX(t)		(_AT(pteval_t, (t)) << 2)
80 #define PTE_ATTRINDX_MASK	(_AT(pteval_t, 7) << 2)
81 
82 /*
83  * 2nd stage PTE definitions
84  */
85 #define PTE_S2_RDONLY		(_AT(pteval_t, 1) << 6)   /* HAP[2:1] */
86 #define PTE_S2_RDWR		(_AT(pteval_t, 3) << 6)   /* HAP[2:1] */
87 
88 #define PMD_S2_RDWR		(_AT(pmdval_t, 3) << 6)   /* HAP[2:1] */
89 
90 /*
91  * Memory Attribute override for Stage-2 (MemAttr[3:0])
92  */
93 #define PTE_S2_MEMATTR(t)	(_AT(pteval_t, (t)) << 2)
94 #define PTE_S2_MEMATTR_MASK	(_AT(pteval_t, 0xf) << 2)
95 
96 /*
97  * EL2/HYP PTE/PMD definitions
98  */
99 #define PMD_HYP			PMD_SECT_USER
100 #define PTE_HYP			PTE_USER
101 
102 /*
103  * Highest possible physical address supported.
104  */
105 #define PHYS_MASK_SHIFT		(48)
106 #define PHYS_MASK		((UL(1) << PHYS_MASK_SHIFT) - 1)
107 
108 /*
109  * TCR flags.
110  */
111 #define TCR_TxSZ(x)		(((UL(64) - (x)) << 16) | ((UL(64) - (x)) << 0))
112 #define TCR_IRGN_NC		((UL(0) << 8) | (UL(0) << 24))
113 #define TCR_IRGN_WBWA		((UL(1) << 8) | (UL(1) << 24))
114 #define TCR_IRGN_WT		((UL(2) << 8) | (UL(2) << 24))
115 #define TCR_IRGN_WBnWA		((UL(3) << 8) | (UL(3) << 24))
116 #define TCR_IRGN_MASK		((UL(3) << 8) | (UL(3) << 24))
117 #define TCR_ORGN_NC		((UL(0) << 10) | (UL(0) << 26))
118 #define TCR_ORGN_WBWA		((UL(1) << 10) | (UL(1) << 26))
119 #define TCR_ORGN_WT		((UL(2) << 10) | (UL(2) << 26))
120 #define TCR_ORGN_WBnWA		((UL(3) << 10) | (UL(3) << 26))
121 #define TCR_ORGN_MASK		((UL(3) << 10) | (UL(3) << 26))
122 #define TCR_SHARED		((UL(3) << 12) | (UL(3) << 28))
123 #define TCR_TG0_4K		(UL(0) << 14)
124 #define TCR_TG0_64K		(UL(1) << 14)
125 #define TCR_TG0_16K		(UL(2) << 14)
126 #define TCR_TG1_16K		(UL(1) << 30)
127 #define TCR_TG1_4K		(UL(2) << 30)
128 #define TCR_TG1_64K		(UL(3) << 30)
129 #define TCR_ASID16		(UL(1) << 36)
130 #define TCR_TBI0		(UL(1) << 37)
131 
132 #endif
133