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1 | /* |
2 | * Copyright (C) 2016 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_PROT_H | |
17 | #define __ASM_PGTABLE_PROT_H | |
18 | ||
19 | #include <asm/memory.h> | |
20 | #include <asm/pgtable-hwdef.h> | |
21 | ||
22 | #include <linux/const.h> | |
23 | ||
24 | /* | |
25 | * Software defined PTE bits definition. | |
26 | */ | |
27 | #define PTE_VALID (_AT(pteval_t, 1) << 0) | |
28 | #define PTE_WRITE (PTE_DBM) /* same as DBM (51) */ | |
29 | #define PTE_DIRTY (_AT(pteval_t, 1) << 55) | |
30 | #define PTE_SPECIAL (_AT(pteval_t, 1) << 56) | |
31 | #define PTE_PROT_NONE (_AT(pteval_t, 1) << 58) /* only when !PTE_VALID */ | |
32 | ||
33 | #ifndef __ASSEMBLY__ | |
34 | ||
35 | #include <asm/pgtable-types.h> | |
36 | ||
37 | #define PROT_DEFAULT (PTE_TYPE_PAGE | PTE_AF | PTE_SHARED) | |
38 | #define PROT_SECT_DEFAULT (PMD_TYPE_SECT | PMD_SECT_AF | PMD_SECT_S) | |
39 | ||
40 | #define PROT_DEVICE_nGnRnE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRnE)) | |
41 | #define PROT_DEVICE_nGnRE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRE)) | |
42 | #define PROT_NORMAL_NC (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_NC)) | |
43 | #define PROT_NORMAL_WT (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_WT)) | |
44 | #define PROT_NORMAL (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL)) | |
45 | ||
46 | #define PROT_SECT_DEVICE_nGnRE (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_DEVICE_nGnRE)) | |
47 | #define PROT_SECT_NORMAL (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_NORMAL)) | |
48 | #define PROT_SECT_NORMAL_EXEC (PROT_SECT_DEFAULT | PMD_SECT_UXN | PMD_ATTRINDX(MT_NORMAL)) | |
49 | ||
50 | #define _PAGE_DEFAULT (PROT_DEFAULT | PTE_ATTRINDX(MT_NORMAL)) | |
51 | ||
52 | #define PAGE_KERNEL __pgprot(_PAGE_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE) | |
53 | #define PAGE_KERNEL_RO __pgprot(_PAGE_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_RDONLY) | |
54 | #define PAGE_KERNEL_ROX __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_RDONLY) | |
55 | #define PAGE_KERNEL_EXEC __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE) | |
56 | #define PAGE_KERNEL_EXEC_CONT __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_CONT) | |
57 | ||
0996353f | 58 | #define PAGE_HYP __pgprot(_PAGE_DEFAULT | PTE_HYP | PTE_HYP_XN) |
59002705 | 59 | #define PAGE_HYP_EXEC __pgprot(_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY) |
74a6b888 | 60 | #define PAGE_HYP_RO __pgprot(_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY | PTE_HYP_XN) |
3eca86e7 MR |
61 | #define PAGE_HYP_DEVICE __pgprot(PROT_DEVICE_nGnRE | PTE_HYP) |
62 | ||
63 | #define PAGE_S2 __pgprot(PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_NORMAL) | PTE_S2_RDONLY) | |
64 | #define PAGE_S2_DEVICE __pgprot(PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_DEVICE_nGnRE) | PTE_S2_RDONLY | PTE_UXN) | |
65 | ||
66 | #define PAGE_NONE __pgprot(((_PAGE_DEFAULT) & ~PTE_VALID) | PTE_PROT_NONE | PTE_PXN | PTE_UXN) | |
67 | #define PAGE_SHARED __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN | PTE_WRITE) | |
68 | #define PAGE_SHARED_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_WRITE) | |
69 | #define PAGE_COPY __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN) | |
70 | #define PAGE_COPY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN) | |
71 | #define PAGE_READONLY __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN) | |
72 | #define PAGE_READONLY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN) | |
73 | ||
74 | #define __P000 PAGE_NONE | |
75 | #define __P001 PAGE_READONLY | |
76 | #define __P010 PAGE_COPY | |
77 | #define __P011 PAGE_COPY | |
78 | #define __P100 PAGE_READONLY_EXEC | |
79 | #define __P101 PAGE_READONLY_EXEC | |
80 | #define __P110 PAGE_COPY_EXEC | |
81 | #define __P111 PAGE_COPY_EXEC | |
82 | ||
83 | #define __S000 PAGE_NONE | |
84 | #define __S001 PAGE_READONLY | |
85 | #define __S010 PAGE_SHARED | |
86 | #define __S011 PAGE_SHARED | |
87 | #define __S100 PAGE_READONLY_EXEC | |
88 | #define __S101 PAGE_READONLY_EXEC | |
89 | #define __S110 PAGE_SHARED_EXEC | |
90 | #define __S111 PAGE_SHARED_EXEC | |
91 | ||
92 | #endif /* __ASSEMBLY__ */ | |
93 | ||
94 | #endif /* __ASM_PGTABLE_PROT_H */ |