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