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_PXNTABLE (_AT(pmdval_t, 1) << 2) /* v7 */ 24#define PMD_BIT4 (_AT(pmdval_t, 1) << 4) 25#define PMD_DOMAIN(x) (_AT(pmdval_t, (x)) << 5) 26#define PMD_PROTECTION (_AT(pmdval_t, 1) << 9) /* v5 */ 27/* 28 * - section 29 */ 30#define PMD_SECT_PXN (_AT(pmdval_t, 1) << 0) /* v7 */ 31#define PMD_SECT_BUFFERABLE (_AT(pmdval_t, 1) << 2) 32#define PMD_SECT_CACHEABLE (_AT(pmdval_t, 1) << 3) 33#define PMD_SECT_XN (_AT(pmdval_t, 1) << 4) /* v6 */ 34#define PMD_SECT_AP_WRITE (_AT(pmdval_t, 1) << 10) 35#define PMD_SECT_AP_READ (_AT(pmdval_t, 1) << 11) 36#define PMD_SECT_TEX(x) (_AT(pmdval_t, (x)) << 12) /* v5 */ 37#define PMD_SECT_APX (_AT(pmdval_t, 1) << 15) /* v6 */ 38#define PMD_SECT_S (_AT(pmdval_t, 1) << 16) /* v6 */ 39#define PMD_SECT_nG (_AT(pmdval_t, 1) << 17) /* v6 */ 40#define PMD_SECT_SUPER (_AT(pmdval_t, 1) << 18) /* v6 */ 41#define PMD_SECT_AF (_AT(pmdval_t, 0)) 42 43#define PMD_SECT_UNCACHED (_AT(pmdval_t, 0)) 44#define PMD_SECT_BUFFERED (PMD_SECT_BUFFERABLE) 45#define PMD_SECT_WT (PMD_SECT_CACHEABLE) 46#define PMD_SECT_WB (PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE) 47#define PMD_SECT_MINICACHE (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE) 48#define PMD_SECT_WBWA (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE) 49#define PMD_SECT_NONSHARED_DEV (PMD_SECT_TEX(2)) 50 51/* 52 * - coarse table (not used) 53 */ 54 55/* 56 * + Level 2 descriptor (PTE) 57 * - common 58 */ 59#define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0) 60#define PTE_TYPE_FAULT (_AT(pteval_t, 0) << 0) 61#define PTE_TYPE_LARGE (_AT(pteval_t, 1) << 0) 62#define PTE_TYPE_SMALL (_AT(pteval_t, 2) << 0) 63#define PTE_TYPE_EXT (_AT(pteval_t, 3) << 0) /* v5 */ 64#define PTE_BUFFERABLE (_AT(pteval_t, 1) << 2) 65#define PTE_CACHEABLE (_AT(pteval_t, 1) << 3) 66 67/* 68 * - extended small page/tiny page 69 */ 70#define PTE_EXT_XN (_AT(pteval_t, 1) << 0) /* v6 */ 71#define PTE_EXT_AP_MASK (_AT(pteval_t, 3) << 4) 72#define PTE_EXT_AP0 (_AT(pteval_t, 1) << 4) 73#define PTE_EXT_AP1 (_AT(pteval_t, 2) << 4) 74#define PTE_EXT_AP_UNO_SRO (_AT(pteval_t, 0) << 4) 75#define PTE_EXT_AP_UNO_SRW (PTE_EXT_AP0) 76#define PTE_EXT_AP_URO_SRW (PTE_EXT_AP1) 77#define PTE_EXT_AP_URW_SRW (PTE_EXT_AP1|PTE_EXT_AP0) 78#define PTE_EXT_TEX(x) (_AT(pteval_t, (x)) << 6) /* v5 */ 79#define PTE_EXT_APX (_AT(pteval_t, 1) << 9) /* v6 */ 80#define PTE_EXT_COHERENT (_AT(pteval_t, 1) << 9) /* XScale3 */ 81#define PTE_EXT_SHARED (_AT(pteval_t, 1) << 10) /* v6 */ 82#define PTE_EXT_NG (_AT(pteval_t, 1) << 11) /* v6 */ 83 84/* 85 * - small page 86 */ 87#define PTE_SMALL_AP_MASK (_AT(pteval_t, 0xff) << 4) 88#define PTE_SMALL_AP_UNO_SRO (_AT(pteval_t, 0x00) << 4) 89#define PTE_SMALL_AP_UNO_SRW (_AT(pteval_t, 0x55) << 4) 90#define PTE_SMALL_AP_URO_SRW (_AT(pteval_t, 0xaa) << 4) 91#define PTE_SMALL_AP_URW_SRW (_AT(pteval_t, 0xff) << 4) 92 93#define PHYS_MASK (~0UL) 94 95#endif 96