1 /* 2 * linux/arch/unicore32/include/asm/pgtable-hwdef.h 3 * 4 * Code specific to PKUnity SoC and UniCore ISA 5 * 6 * Copyright (C) 2001-2010 GUAN Xue-tao 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 #ifndef __UNICORE_PGTABLE_HWDEF_H__ 13 #define __UNICORE_PGTABLE_HWDEF_H__ 14 15 /* 16 * Hardware page table definitions. 17 * 18 * + Level 1 descriptor (PMD) 19 * - common 20 */ 21 #define PMD_TYPE_MASK (3 << 0) 22 #define PMD_TYPE_TABLE (0 << 0) 23 /*#define PMD_TYPE_LARGE (1 << 0) */ 24 #define PMD_TYPE_INVALID (2 << 0) 25 #define PMD_TYPE_SECT (3 << 0) 26 27 #define PMD_PRESENT (1 << 2) 28 #define PMD_YOUNG (1 << 3) 29 30 /*#define PMD_SECT_DIRTY (1 << 4) */ 31 #define PMD_SECT_CACHEABLE (1 << 5) 32 #define PMD_SECT_EXEC (1 << 6) 33 #define PMD_SECT_WRITE (1 << 7) 34 #define PMD_SECT_READ (1 << 8) 35 36 /* 37 * + Level 2 descriptor (PTE) 38 * - common 39 */ 40 #define PTE_TYPE_MASK (3 << 0) 41 #define PTE_TYPE_SMALL (0 << 0) 42 #define PTE_TYPE_MIDDLE (1 << 0) 43 #define PTE_TYPE_LARGE (2 << 0) 44 #define PTE_TYPE_INVALID (3 << 0) 45 46 #define PTE_PRESENT (1 << 2) 47 #define PTE_YOUNG (1 << 3) 48 #define PTE_DIRTY (1 << 4) 49 #define PTE_CACHEABLE (1 << 5) 50 #define PTE_EXEC (1 << 6) 51 #define PTE_WRITE (1 << 7) 52 #define PTE_READ (1 << 8) 53 54 #endif 55
