1 /* 2 * arch/arm/include/asm/pgtable-2level-hwdef.h 3 * 4 * Copyright (C) 1995-2002 Russell King 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 #ifndef _ASM_PGTABLE_2LEVEL_HWDEF_H 11 #define _ASM_PGTABLE_2LEVEL_HWDEF_H 12 13 /* 14 * Hardware page table definitions. 15 * 16 * + Level 1 descriptor (PMD) 17 * - common 18 */ 19 #define PMD_TYPE_MASK (_AT(pmdval_t, 3) << 0) 20 #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0) 21 #define PMD_TYPE_TABLE (_AT(pmdval_t, 1) << 0) 22 #define PMD_TYPE_SECT (_AT(pmdval_t, 2) << 0) 23 #define PMD_BIT4 (_AT(pmdval_t, 1) << 4) 24 #define PMD_DOMAIN(x) (_AT(pmdval_t, (x)) << 5) 25 #define PMD_PROTECTION (_AT(pmdval_t, 1) << 9) /* v5 */ 26 /* 27 * - section 28 */ 29 #define PMD_SECT_BUFFERABLE (_AT(pmdval_t, 1) << 2) 30 #define PMD_SECT_CACHEABLE (_AT(pmdval_t, 1) << 3) 31 #define PMD_SECT_XN (_AT(pmdval_t, 1) << 4) /* v6 */ 32 #define PMD_SECT_AP_WRITE (_AT(pmdval_t, 1) << 10) 33 #define PMD_SECT_AP_READ (_AT(pmdval_t, 1) << 11) 34 #define PMD_SECT_TEX(x) (_AT(pmdval_t, (x)) << 12) /* v5 */ 35 #define PMD_SECT_APX (_AT(pmdval_t, 1) << 15) /* v6 */ 36 #define PMD_SECT_S (_AT(pmdval_t, 1) << 16) /* v6 */ 37 #define PMD_SECT_nG (_AT(pmdval_t, 1) << 17) /* v6 */ 38 #define PMD_SECT_SUPER (_AT(pmdval_t, 1) << 18) /* v6 */ 39 #define PMD_SECT_AF (_AT(pmdval_t, 0)) 40 41 #define PMD_SECT_UNCACHED (_AT(pmdval_t, 0)) 42 #define PMD_SECT_BUFFERED (PMD_SECT_BUFFERABLE) 43 #define PMD_SECT_WT (PMD_SECT_CACHEABLE) 44 #define PMD_SECT_WB (PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE) 45 #define PMD_SECT_MINICACHE (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE) 46 #define PMD_SECT_WBWA (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE) 47 #define PMD_SECT_NONSHARED_DEV (PMD_SECT_TEX(2)) 48 49 /* 50 * - coarse table (not used) 51 */ 52 53 /* 54 * + Level 2 descriptor (PTE) 55 * - common 56 */ 57 #define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0) 58 #define PTE_TYPE_FAULT (_AT(pteval_t, 0) << 0) 59 #define PTE_TYPE_LARGE (_AT(pteval_t, 1) << 0) 60 #define PTE_TYPE_SMALL (_AT(pteval_t, 2) << 0) 61 #define PTE_TYPE_EXT (_AT(pteval_t, 3) << 0) /* v5 */ 62 #define PTE_BUFFERABLE (_AT(pteval_t, 1) << 2) 63 #define PTE_CACHEABLE (_AT(pteval_t, 1) << 3) 64 65 /* 66 * - extended small page/tiny page 67 */ 68 #define PTE_EXT_XN (_AT(pteval_t, 1) << 0) /* v6 */ 69 #define PTE_EXT_AP_MASK (_AT(pteval_t, 3) << 4) 70 #define PTE_EXT_AP0 (_AT(pteval_t, 1) << 4) 71 #define PTE_EXT_AP1 (_AT(pteval_t, 2) << 4) 72 #define PTE_EXT_AP_UNO_SRO (_AT(pteval_t, 0) << 4) 73 #define PTE_EXT_AP_UNO_SRW (PTE_EXT_AP0) 74 #define PTE_EXT_AP_URO_SRW (PTE_EXT_AP1) 75 #define PTE_EXT_AP_URW_SRW (PTE_EXT_AP1|PTE_EXT_AP0) 76 #define PTE_EXT_TEX(x) (_AT(pteval_t, (x)) << 6) /* v5 */ 77 #define PTE_EXT_APX (_AT(pteval_t, 1) << 9) /* v6 */ 78 #define PTE_EXT_COHERENT (_AT(pteval_t, 1) << 9) /* XScale3 */ 79 #define PTE_EXT_SHARED (_AT(pteval_t, 1) << 10) /* v6 */ 80 #define PTE_EXT_NG (_AT(pteval_t, 1) << 11) /* v6 */ 81 82 /* 83 * - small page 84 */ 85 #define PTE_SMALL_AP_MASK (_AT(pteval_t, 0xff) << 4) 86 #define PTE_SMALL_AP_UNO_SRO (_AT(pteval_t, 0x00) << 4) 87 #define PTE_SMALL_AP_UNO_SRW (_AT(pteval_t, 0x55) << 4) 88 #define PTE_SMALL_AP_URO_SRW (_AT(pteval_t, 0xaa) << 4) 89 #define PTE_SMALL_AP_URW_SRW (_AT(pteval_t, 0xff) << 4) 90 91 #define PHYS_MASK (~0UL) 92 93 #endif 94