| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. |
| 3 | |
| 4 | #ifndef __ASM_CSKY_PGTABLE_BITS_H |
| 5 | #define __ASM_CSKY_PGTABLE_BITS_H |
| 6 | |
| 7 | /* implemented in software */ |
| 8 | #define _PAGE_ACCESSED (1<<3) |
| 9 | #define PAGE_ACCESSED_BIT (3) |
| 10 | |
| 11 | #define _PAGE_READ (1<<1) |
| 12 | #define _PAGE_WRITE (1<<2) |
| 13 | #define _PAGE_PRESENT (1<<0) |
| 14 | |
| 15 | #define _PAGE_MODIFIED (1<<4) |
| 16 | #define PAGE_MODIFIED_BIT (4) |
| 17 | |
| 18 | /* implemented in hardware */ |
| 19 | #define _PAGE_GLOBAL (1<<6) |
| 20 | |
| 21 | #define _PAGE_VALID (1<<7) |
| 22 | #define PAGE_VALID_BIT (7) |
| 23 | |
| 24 | #define _PAGE_DIRTY (1<<8) |
| 25 | #define PAGE_DIRTY_BIT (8) |
| 26 | |
| 27 | #define _PAGE_CACHE (3<<9) |
| 28 | #define _PAGE_UNCACHE (2<<9) |
| 29 | #define _PAGE_SO _PAGE_UNCACHE |
| 30 | |
| 31 | #define _CACHE_MASK (7<<9) |
| 32 | |
| 33 | #define _CACHE_CACHED (_PAGE_VALID | _PAGE_CACHE) |
| 34 | #define _CACHE_UNCACHED (_PAGE_VALID | _PAGE_UNCACHE) |
| 35 | |
| 36 | #define HAVE_ARCH_UNMAPPED_AREA |
| 37 | |
| 38 | #endif /* __ASM_CSKY_PGTABLE_BITS_H */ |