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/* * arch/arm/include/asm/pgtable-2level-hwdef.h * * Copyright (C) 1995-2002 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef _ASM_PGTABLE_2LEVEL_HWDEF_H #define _ASM_PGTABLE_2LEVEL_HWDEF_H /* * Hardware page table definitions. * * + Level 1 descriptor (PMD) * - common */ #define PMD_TYPE_MASK (_AT(pmdval_t, 3) << 0) #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0) #define PMD_TYPE_TABLE (_AT(pmdval_t, 1) << 0) #define PMD_TYPE_SECT (_AT(pmdval_t, 2) << 0) #define PMD_BIT4 (_AT(pmdval_t, 1) << 4) #define PMD_DOMAIN(x) (_AT(pmdval_t, (x)) << 5) #define PMD_PROTECTION (_AT(pmdval_t, 1) << 9) /* v5 */ /* * - section */ #define PMD_SECT_BUFFERABLE (_AT(pmdval_t, 1) << 2) #define PMD_SECT_CACHEABLE (_AT(pmdval_t, 1) << 3) #define PMD_SECT_XN (_AT(pmdval_t, 1) << 4) /* v6 */ #define PMD_SECT_AP_WRITE (_AT(pmdval_t, 1) << 10) #define PMD_SECT_AP_READ (_AT(pmdval_t, 1) << 11) #define PMD_SECT_TEX(x) (_AT(pmdval_t, (x)) << 12) /* v5 */ #define PMD_SECT_APX (_AT(pmdval_t, 1) << 15) /* v6 */ #define PMD_SECT_S (_AT(pmdval_t, 1) << 16) /* v6 */ #define PMD_SECT_nG (_AT(pmdval_t, 1) << 17) /* v6 */ #define PMD_SECT_SUPER (_AT(pmdval_t, 1) << 18) /* v6 */ #define PMD_SECT_AF (_AT(pmdval_t, 0)) #define PMD_SECT_UNCACHED (_AT(pmdval_t, 0)) #define PMD_SECT_BUFFERED (PMD_SECT_BUFFERABLE) #define PMD_SECT_WT (PMD_SECT_CACHEABLE) #define PMD_SECT_WB (PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE) #define PMD_SECT_MINICACHE (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE) #define PMD_SECT_WBWA (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE) #define PMD_SECT_NONSHARED_DEV (PMD_SECT_TEX(2)) /* * - coarse table (not used) */ /* * + Level 2 descriptor (PTE) * - common */ #define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0) #define PTE_TYPE_FAULT (_AT(pteval_t, 0) << 0) #define PTE_TYPE_LARGE (_AT(pteval_t, 1) << 0) #define PTE_TYPE_SMALL (_AT(pteval_t, 2) << 0) #define PTE_TYPE_EXT (_AT(pteval_t, 3) << 0) /* v5 */ #define PTE_BUFFERABLE (_AT(pteval_t, 1) << 2) #define PTE_CACHEABLE (_AT(pteval_t, 1) << 3) /* * - extended small page/tiny page */ #define PTE_EXT_XN (_AT(pteval_t, 1) << 0) /* v6 */ #define PTE_EXT_AP_MASK (_AT(pteval_t, 3) << 4) #define PTE_EXT_AP0 (_AT(pteval_t, 1) << 4) #define PTE_EXT_AP1 (_AT(pteval_t, 2) << 4) #define PTE_EXT_AP_UNO_SRO (_AT(pteval_t, 0) << 4) #define PTE_EXT_AP_UNO_SRW (PTE_EXT_AP0) #define PTE_EXT_AP_URO_SRW (PTE_EXT_AP1) #define PTE_EXT_AP_URW_SRW (PTE_EXT_AP1|PTE_EXT_AP0) #define PTE_EXT_TEX(x) (_AT(pteval_t, (x)) << 6) /* v5 */ #define PTE_EXT_APX (_AT(pteval_t, 1) << 9) /* v6 */ #define PTE_EXT_COHERENT (_AT(pteval_t, 1) << 9) /* XScale3 */ #define PTE_EXT_SHARED (_AT(pteval_t, 1) << 10) /* v6 */ #define PTE_EXT_NG (_AT(pteval_t, 1) << 11) /* v6 */ /* * - small page */ #define PTE_SMALL_AP_MASK (_AT(pteval_t, 0xff) << 4) #define PTE_SMALL_AP_UNO_SRO (_AT(pteval_t, 0x00) << 4) #define PTE_SMALL_AP_UNO_SRW (_AT(pteval_t, 0x55) << 4) #define PTE_SMALL_AP_URO_SRW (_AT(pteval_t, 0xaa) << 4) #define PTE_SMALL_AP_URW_SRW (_AT(pteval_t, 0xff) << 4) #define PHYS_MASK (~0UL) #endif