| GuanXuetao | 56372b0 | 2011-01-15 18:17:56 +0800 | [diff] [blame] | 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) |
| GuanXuetao | 56372b0 | 2011-01-15 18:17:56 +0800 | [diff] [blame] | 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 |