projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 3eca86e7 MR |
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 | ||
| 77f18586 WD |
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 | #ifdef CONFIG_UNMAP_KERNEL_AT_EL0 | |
| 41 | #define PROT_DEFAULT (_PROT_DEFAULT | PTE_NG) | |
| 42 | #define PROT_SECT_DEFAULT (_PROT_SECT_DEFAULT | PMD_SECT_NG) | |
| 43 | #else | |
| 44 | #define PROT_DEFAULT _PROT_DEFAULT | |
| 45 | #define PROT_SECT_DEFAULT _PROT_SECT_DEFAULT | |
| 46 | #endif /* CONFIG_UNMAP_KERNEL_AT_EL0 */ | |
| 3eca86e7 MR |
47 | |
| 48 | #define PROT_DEVICE_nGnRnE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRnE)) | |
| 49 | #define PROT_DEVICE_nGnRE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRE)) | |
| 50 | #define PROT_NORMAL_NC (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_NC)) | |
| 51 | #define PROT_NORMAL_WT (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_WT)) | |
| 52 | #define PROT_NORMAL (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL)) | |
| 53 | ||
| 54 | #define PROT_SECT_DEVICE_nGnRE (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_DEVICE_nGnRE)) | |
| 55 | #define PROT_SECT_NORMAL (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_NORMAL)) | |
| 56 | #define PROT_SECT_NORMAL_EXEC (PROT_SECT_DEFAULT | PMD_SECT_UXN | PMD_ATTRINDX(MT_NORMAL)) | |
| 57 | ||
| 58 | #define _PAGE_DEFAULT (PROT_DEFAULT | PTE_ATTRINDX(MT_NORMAL)) | |
| 77f18586 | 59 | #define _HYP_PAGE_DEFAULT (_PAGE_DEFAULT & ~PTE_NG) |
| 3eca86e7 MR |
60 | |
| 61 | #define PAGE_KERNEL __pgprot(_PAGE_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE) | |
| 62 | #define PAGE_KERNEL_RO __pgprot(_PAGE_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_RDONLY) | |
| 63 | #define PAGE_KERNEL_ROX __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_RDONLY) | |
| 64 | #define PAGE_KERNEL_EXEC __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE) | |
| 65 | #define PAGE_KERNEL_EXEC_CONT __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_CONT) | |
| 66 | ||
| 77f18586 WD |
67 | #define PAGE_HYP __pgprot(_HYP_PAGE_DEFAULT | PTE_HYP | PTE_HYP_XN) |
| 68 | #define PAGE_HYP_EXEC __pgprot(_HYP_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY) | |
| 69 | #define PAGE_HYP_RO __pgprot(_HYP_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY | PTE_HYP_XN) | |
| 3eca86e7 MR |
70 | #define PAGE_HYP_DEVICE __pgprot(PROT_DEVICE_nGnRE | PTE_HYP) |
| 71 | ||
| 72 | #define PAGE_S2 __pgprot(PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_NORMAL) | PTE_S2_RDONLY) | |
| 73 | #define PAGE_S2_DEVICE __pgprot(PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_DEVICE_nGnRE) | PTE_S2_RDONLY | PTE_UXN) | |
| 74 | ||
| 77f18586 | 75 | #define PAGE_NONE __pgprot(((_PAGE_DEFAULT) & ~PTE_VALID) | PTE_PROT_NONE | PTE_RDONLY | PTE_NG | PTE_PXN | PTE_UXN) |
| 3eca86e7 MR |
76 | #define PAGE_SHARED __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN | PTE_WRITE) |
| 77 | #define PAGE_SHARED_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_WRITE) | |
| 2bbc76c3 CM |
78 | #define PAGE_READONLY __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY | PTE_NG | PTE_PXN | PTE_UXN) |
| 79 | #define PAGE_READONLY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY | PTE_NG | PTE_PXN) | |
| 80 | #define PAGE_EXECONLY __pgprot(_PAGE_DEFAULT | PTE_RDONLY | PTE_NG | PTE_PXN) | |
| 3eca86e7 MR |
81 | |
| 82 | #define __P000 PAGE_NONE | |
| 83 | #define __P001 PAGE_READONLY | |
| 2bbc76c3 CM |
84 | #define __P010 PAGE_READONLY |
| 85 | #define __P011 PAGE_READONLY | |
| cab15ce6 | 86 | #define __P100 PAGE_EXECONLY |
| 3eca86e7 | 87 | #define __P101 PAGE_READONLY_EXEC |
| 2bbc76c3 CM |
88 | #define __P110 PAGE_READONLY_EXEC |
| 89 | #define __P111 PAGE_READONLY_EXEC | |
| 3eca86e7 MR |
90 | |
| 91 | #define __S000 PAGE_NONE | |
| 92 | #define __S001 PAGE_READONLY | |
| 93 | #define __S010 PAGE_SHARED | |
| 94 | #define __S011 PAGE_SHARED | |
| cab15ce6 | 95 | #define __S100 PAGE_EXECONLY |
| 3eca86e7 MR |
96 | #define __S101 PAGE_READONLY_EXEC |
| 97 | #define __S110 PAGE_SHARED_EXEC | |
| 98 | #define __S111 PAGE_SHARED_EXEC | |
| 99 | ||
| 100 | #endif /* __ASSEMBLY__ */ | |
| 101 | ||
| 102 | #endif /* __ASM_PGTABLE_PROT_H */ |