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Russell King74945c82006-03-16 14:44:36 +00001/*
2 * linux/include/asm-arm/pgtable-hwdef.h
3 *
4 * Copyright (C) 1995-2002 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#ifndef _ASMARM_PGTABLE_HWDEF_H
11#define _ASMARM_PGTABLE_HWDEF_H
12
13/*
14 * Hardware page table definitions.
15 *
16 * + Level 1 descriptor (PMD)
17 * - common
18 */
19#define PMD_TYPE_MASK (3 << 0)
20#define PMD_TYPE_FAULT (0 << 0)
21#define PMD_TYPE_TABLE (1 << 0)
22#define PMD_TYPE_SECT (2 << 0)
23#define PMD_BIT4 (1 << 4)
24#define PMD_DOMAIN(x) ((x) << 5)
25#define PMD_PROTECTION (1 << 9) /* v5 */
26/*
27 * - section
28 */
29#define PMD_SECT_BUFFERABLE (1 << 2)
30#define PMD_SECT_CACHEABLE (1 << 3)
31#define PMD_SECT_AP_WRITE (1 << 10)
32#define PMD_SECT_AP_READ (1 << 11)
33#define PMD_SECT_TEX(x) ((x) << 12) /* v5 */
34#define PMD_SECT_APX (1 << 15) /* v6 */
35#define PMD_SECT_S (1 << 16) /* v6 */
36#define PMD_SECT_nG (1 << 17) /* v6 */
37#define PMD_SECT_SUPER (1 << 18) /* v6 */
38
39#define PMD_SECT_UNCACHED (0)
40#define PMD_SECT_BUFFERED (PMD_SECT_BUFFERABLE)
41#define PMD_SECT_WT (PMD_SECT_CACHEABLE)
42#define PMD_SECT_WB (PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
43#define PMD_SECT_MINICACHE (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE)
44#define PMD_SECT_WBWA (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
45#define PMD_SECT_NONSHARED_DEV (PMD_SECT_TEX(2))
46
47/*
48 * - coarse table (not used)
49 */
50
51/*
52 * + Level 2 descriptor (PTE)
53 * - common
54 */
55#define PTE_TYPE_MASK (3 << 0)
56#define PTE_TYPE_FAULT (0 << 0)
57#define PTE_TYPE_LARGE (1 << 0)
58#define PTE_TYPE_SMALL (2 << 0)
59#define PTE_TYPE_EXT (3 << 0) /* v5 */
60#define PTE_BUFFERABLE (1 << 2)
61#define PTE_CACHEABLE (1 << 3)
62
63/*
64 * - extended small page/tiny page
65 */
66#define PTE_EXT_XN (1 << 0) /* v6 */
67#define PTE_EXT_AP_MASK (3 << 4)
68#define PTE_EXT_AP0 (1 << 4)
69#define PTE_EXT_AP1 (2 << 4)
70#define PTE_EXT_AP_UNO_SRO (0 << 4)
71#define PTE_EXT_AP_UNO_SRW (PTE_EXT_AP0)
72#define PTE_EXT_AP_URO_SRW (PTE_EXT_AP1)
73#define PTE_EXT_AP_URW_SRW (PTE_EXT_AP1|PTE_EXT_AP0)
74#define PTE_EXT_TEX(x) ((x) << 6) /* v5 */
75#define PTE_EXT_APX (1 << 9) /* v6 */
Lennert Buytenhek23759dc2006-04-02 00:07:39 +010076#define PTE_EXT_COHERENT (1 << 9) /* XScale3 */
Russell King74945c82006-03-16 14:44:36 +000077#define PTE_EXT_SHARED (1 << 10) /* v6 */
78#define PTE_EXT_NG (1 << 11) /* v6 */
79
80/*
81 * - small page
82 */
83#define PTE_SMALL_AP_MASK (0xff << 4)
84#define PTE_SMALL_AP_UNO_SRO (0x00 << 4)
85#define PTE_SMALL_AP_UNO_SRW (0x55 << 4)
86#define PTE_SMALL_AP_URO_SRW (0xaa << 4)
87#define PTE_SMALL_AP_URW_SRW (0xff << 4)
88
89#endif