13eca86e7SMark Rutland /* 23eca86e7SMark Rutland * Copyright (C) 2016 ARM Ltd. 33eca86e7SMark Rutland * 43eca86e7SMark Rutland * This program is free software; you can redistribute it and/or modify 53eca86e7SMark Rutland * it under the terms of the GNU General Public License version 2 as 63eca86e7SMark Rutland * published by the Free Software Foundation. 73eca86e7SMark Rutland * 83eca86e7SMark Rutland * This program is distributed in the hope that it will be useful, 93eca86e7SMark Rutland * but WITHOUT ANY WARRANTY; without even the implied warranty of 103eca86e7SMark Rutland * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 113eca86e7SMark Rutland * GNU General Public License for more details. 123eca86e7SMark Rutland * 133eca86e7SMark Rutland * You should have received a copy of the GNU General Public License 143eca86e7SMark Rutland * along with this program. If not, see <http://www.gnu.org/licenses/>. 153eca86e7SMark Rutland */ 163eca86e7SMark Rutland #ifndef __ASM_PGTABLE_PROT_H 173eca86e7SMark Rutland #define __ASM_PGTABLE_PROT_H 183eca86e7SMark Rutland 193eca86e7SMark Rutland #include <asm/memory.h> 203eca86e7SMark Rutland #include <asm/pgtable-hwdef.h> 213eca86e7SMark Rutland 223eca86e7SMark Rutland #include <linux/const.h> 233eca86e7SMark Rutland 243eca86e7SMark Rutland /* 253eca86e7SMark Rutland * Software defined PTE bits definition. 263eca86e7SMark Rutland */ 273eca86e7SMark Rutland #define PTE_VALID (_AT(pteval_t, 1) << 0) 283eca86e7SMark Rutland #define PTE_WRITE (PTE_DBM) /* same as DBM (51) */ 293eca86e7SMark Rutland #define PTE_DIRTY (_AT(pteval_t, 1) << 55) 303eca86e7SMark Rutland #define PTE_SPECIAL (_AT(pteval_t, 1) << 56) 313eca86e7SMark Rutland #define PTE_PROT_NONE (_AT(pteval_t, 1) << 58) /* only when !PTE_VALID */ 323eca86e7SMark Rutland 333eca86e7SMark Rutland #ifndef __ASSEMBLY__ 343eca86e7SMark Rutland 353eca86e7SMark Rutland #include <asm/pgtable-types.h> 363eca86e7SMark Rutland 37e046eb0cSWill Deacon #define _PROT_DEFAULT (PTE_TYPE_PAGE | PTE_AF | PTE_SHARED) 38e046eb0cSWill Deacon #define _PROT_SECT_DEFAULT (PMD_TYPE_SECT | PMD_SECT_AF | PMD_SECT_S) 39e046eb0cSWill Deacon 4041acec62SWill Deacon #define PTE_MAYBE_NG (arm64_kernel_unmapped_at_el0() ? PTE_NG : 0) 4141acec62SWill Deacon #define PMD_MAYBE_NG (arm64_kernel_unmapped_at_el0() ? PMD_SECT_NG : 0) 4241acec62SWill Deacon 4341acec62SWill Deacon #define PROT_DEFAULT (_PROT_DEFAULT | PTE_MAYBE_NG) 4441acec62SWill Deacon #define PROT_SECT_DEFAULT (_PROT_SECT_DEFAULT | PMD_MAYBE_NG) 453eca86e7SMark Rutland 463eca86e7SMark Rutland #define PROT_DEVICE_nGnRnE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRnE)) 473eca86e7SMark Rutland #define PROT_DEVICE_nGnRE (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_DEVICE_nGnRE)) 483eca86e7SMark Rutland #define PROT_NORMAL_NC (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_NC)) 493eca86e7SMark Rutland #define PROT_NORMAL_WT (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL_WT)) 503eca86e7SMark Rutland #define PROT_NORMAL (PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_ATTRINDX(MT_NORMAL)) 513eca86e7SMark Rutland 523eca86e7SMark Rutland #define PROT_SECT_DEVICE_nGnRE (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_DEVICE_nGnRE)) 533eca86e7SMark Rutland #define PROT_SECT_NORMAL (PROT_SECT_DEFAULT | PMD_SECT_PXN | PMD_SECT_UXN | PMD_ATTRINDX(MT_NORMAL)) 543eca86e7SMark Rutland #define PROT_SECT_NORMAL_EXEC (PROT_SECT_DEFAULT | PMD_SECT_UXN | PMD_ATTRINDX(MT_NORMAL)) 553eca86e7SMark Rutland 5641acec62SWill Deacon #define _PAGE_DEFAULT (_PROT_DEFAULT | PTE_ATTRINDX(MT_NORMAL)) 5741acec62SWill Deacon #define _HYP_PAGE_DEFAULT _PAGE_DEFAULT 583eca86e7SMark Rutland 5941acec62SWill Deacon #define PAGE_KERNEL __pgprot(PROT_NORMAL) 6041acec62SWill Deacon #define PAGE_KERNEL_RO __pgprot((PROT_NORMAL & ~PTE_WRITE) | PTE_RDONLY) 6141acec62SWill Deacon #define PAGE_KERNEL_ROX __pgprot((PROT_NORMAL & ~(PTE_WRITE | PTE_PXN)) | PTE_RDONLY) 6241acec62SWill Deacon #define PAGE_KERNEL_EXEC __pgprot(PROT_NORMAL & ~PTE_PXN) 6341acec62SWill Deacon #define PAGE_KERNEL_EXEC_CONT __pgprot((PROT_NORMAL & ~PTE_PXN) | PTE_CONT) 643eca86e7SMark Rutland 65e046eb0cSWill Deacon #define PAGE_HYP __pgprot(_HYP_PAGE_DEFAULT | PTE_HYP | PTE_HYP_XN) 66e046eb0cSWill Deacon #define PAGE_HYP_EXEC __pgprot(_HYP_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY) 67e046eb0cSWill Deacon #define PAGE_HYP_RO __pgprot(_HYP_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY | PTE_HYP_XN) 683eca86e7SMark Rutland #define PAGE_HYP_DEVICE __pgprot(PROT_DEVICE_nGnRE | PTE_HYP) 693eca86e7SMark Rutland 7041acec62SWill Deacon #define PAGE_S2 __pgprot(_PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_NORMAL) | PTE_S2_RDONLY) 7141acec62SWill Deacon #define PAGE_S2_DEVICE __pgprot(_PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_DEVICE_nGnRE) | PTE_S2_RDONLY | PTE_UXN) 723eca86e7SMark Rutland 73e046eb0cSWill Deacon #define PAGE_NONE __pgprot(((_PAGE_DEFAULT) & ~PTE_VALID) | PTE_PROT_NONE | PTE_RDONLY | PTE_NG | PTE_PXN | PTE_UXN) 743eca86e7SMark Rutland #define PAGE_SHARED __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN | PTE_WRITE) 753eca86e7SMark Rutland #define PAGE_SHARED_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_WRITE) 7673e86cb0SCatalin Marinas #define PAGE_READONLY __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY | PTE_NG | PTE_PXN | PTE_UXN) 7773e86cb0SCatalin Marinas #define PAGE_READONLY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY | PTE_NG | PTE_PXN) 7873e86cb0SCatalin Marinas #define PAGE_EXECONLY __pgprot(_PAGE_DEFAULT | PTE_RDONLY | PTE_NG | PTE_PXN) 793eca86e7SMark Rutland 803eca86e7SMark Rutland #define __P000 PAGE_NONE 813eca86e7SMark Rutland #define __P001 PAGE_READONLY 8273e86cb0SCatalin Marinas #define __P010 PAGE_READONLY 8373e86cb0SCatalin Marinas #define __P011 PAGE_READONLY 84cab15ce6SCatalin Marinas #define __P100 PAGE_EXECONLY 853eca86e7SMark Rutland #define __P101 PAGE_READONLY_EXEC 8673e86cb0SCatalin Marinas #define __P110 PAGE_READONLY_EXEC 8773e86cb0SCatalin Marinas #define __P111 PAGE_READONLY_EXEC 883eca86e7SMark Rutland 893eca86e7SMark Rutland #define __S000 PAGE_NONE 903eca86e7SMark Rutland #define __S001 PAGE_READONLY 913eca86e7SMark Rutland #define __S010 PAGE_SHARED 923eca86e7SMark Rutland #define __S011 PAGE_SHARED 93cab15ce6SCatalin Marinas #define __S100 PAGE_EXECONLY 943eca86e7SMark Rutland #define __S101 PAGE_READONLY_EXEC 953eca86e7SMark Rutland #define __S110 PAGE_SHARED_EXEC 963eca86e7SMark Rutland #define __S111 PAGE_SHARED_EXEC 973eca86e7SMark Rutland 983eca86e7SMark Rutland #endif /* __ASSEMBLY__ */ 993eca86e7SMark Rutland 1003eca86e7SMark Rutland #endif /* __ASM_PGTABLE_PROT_H */ 101