arch/arm/include/asm/pgtable-2level-hwdef.h

   1 /*
   2  *  arch/arm/include/asm/pgtable-2level-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 _ASM_PGTABLE_2LEVEL_HWDEF_H
  11 #define _ASM_PGTABLE_2LEVEL_HWDEF_H
  12
  13 /*
  14  * Hardware page table definitions.
  15  *
  16  * + Level 1 descriptor (PMD)
  17  *   - common
  18  */
  19 #define PMD_TYPE_MASK           (_AT(pmdval_t, 3) << 0)
  20 #define PMD_TYPE_FAULT          (_AT(pmdval_t, 0) << 0)
  21 #define PMD_TYPE_TABLE          (_AT(pmdval_t, 1) << 0)
  22 #define PMD_TYPE_SECT           (_AT(pmdval_t, 2) << 0)
  23 #define PMD_BIT4                (_AT(pmdval_t, 1) << 4)
  24 #define PMD_DOMAIN(x)           (_AT(pmdval_t, (x)) << 5)
  25 #define PMD_PROTECTION          (_AT(pmdval_t, 1) << 9)         /* v5 */
  26 /*
  27  *   - section
  28  */
  29 #define PMD_SECT_BUFFERABLE     (_AT(pmdval_t, 1) << 2)
  30 #define PMD_SECT_CACHEABLE      (_AT(pmdval_t, 1) << 3)
  31 #define PMD_SECT_XN             (_AT(pmdval_t, 1) << 4)         /* v6 */
  32 #define PMD_SECT_AP_WRITE       (_AT(pmdval_t, 1) << 10)
  33 #define PMD_SECT_AP_READ        (_AT(pmdval_t, 1) << 11)
  34 #define PMD_SECT_TEX(x)         (_AT(pmdval_t, (x)) << 12)      /* v5 */
  35 #define PMD_SECT_APX            (_AT(pmdval_t, 1) << 15)        /* v6 */
  36 #define PMD_SECT_S              (_AT(pmdval_t, 1) << 16)        /* v6 */
  37 #define PMD_SECT_nG             (_AT(pmdval_t, 1) << 17)        /* v6 */
  38 #define PMD_SECT_SUPER          (_AT(pmdval_t, 1) << 18)        /* v6 */
  39 #define PMD_SECT_AF             (_AT(pmdval_t, 0))
  40
  41 #define PMD_SECT_UNCACHED       (_AT(pmdval_t, 0))
  42 #define PMD_SECT_BUFFERED       (PMD_SECT_BUFFERABLE)
  43 #define PMD_SECT_WT             (PMD_SECT_CACHEABLE)
  44 #define PMD_SECT_WB             (PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
  45 #define PMD_SECT_MINICACHE      (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE)
  46 #define PMD_SECT_WBWA           (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
  47 #define PMD_SECT_NONSHARED_DEV  (PMD_SECT_TEX(2))
  48
  49 /*
  50  *   - coarse table (not used)
  51  */
  52
  53 /*
  54  * + Level 2 descriptor (PTE)
  55  *   - common
  56  */
  57 #define PTE_TYPE_MASK           (_AT(pteval_t, 3) << 0)
  58 #define PTE_TYPE_FAULT          (_AT(pteval_t, 0) << 0)
  59 #define PTE_TYPE_LARGE          (_AT(pteval_t, 1) << 0)
  60 #define PTE_TYPE_SMALL          (_AT(pteval_t, 2) << 0)
  61 #define PTE_TYPE_EXT            (_AT(pteval_t, 3) << 0)         /* v5 */
  62 #define PTE_BUFFERABLE          (_AT(pteval_t, 1) << 2)
  63 #define PTE_CACHEABLE           (_AT(pteval_t, 1) << 3)
  64
  65 /*
  66  *   - extended small page/tiny page
  67  */
  68 #define PTE_EXT_XN              (_AT(pteval_t, 1) << 0)         /* v6 */
  69 #define PTE_EXT_AP_MASK         (_AT(pteval_t, 3) << 4)
  70 #define PTE_EXT_AP0             (_AT(pteval_t, 1) << 4)
  71 #define PTE_EXT_AP1             (_AT(pteval_t, 2) << 4)
  72 #define PTE_EXT_AP_UNO_SRO      (_AT(pteval_t, 0) << 4)
  73 #define PTE_EXT_AP_UNO_SRW      (PTE_EXT_AP0)
  74 #define PTE_EXT_AP_URO_SRW      (PTE_EXT_AP1)
  75 #define PTE_EXT_AP_URW_SRW      (PTE_EXT_AP1|PTE_EXT_AP0)
  76 #define PTE_EXT_TEX(x)          (_AT(pteval_t, (x)) << 6)       /* v5 */
  77 #define PTE_EXT_APX             (_AT(pteval_t, 1) << 9)         /* v6 */
  78 #define PTE_EXT_COHERENT        (_AT(pteval_t, 1) << 9)         /* XScale3 */
  79 #define PTE_EXT_SHARED          (_AT(pteval_t, 1) << 10)        /* v6 */
  80 #define PTE_EXT_NG              (_AT(pteval_t, 1) << 11)        /* v6 */
  81
  82 /*
  83  *   - small page
  84  */
  85 #define PTE_SMALL_AP_MASK       (_AT(pteval_t, 0xff) << 4)
  86 #define PTE_SMALL_AP_UNO_SRO    (_AT(pteval_t, 0x00) << 4)
  87 #define PTE_SMALL_AP_UNO_SRW    (_AT(pteval_t, 0x55) << 4)
  88 #define PTE_SMALL_AP_URO_SRW    (_AT(pteval_t, 0xaa) << 4)
  89 #define PTE_SMALL_AP_URW_SRW    (_AT(pteval_t, 0xff) << 4)
  90
  91 #define PHYS_MASK               (~0UL)
  92
  93 #endif