arch/arm-all/include/asm/mmu.h

   1 #ifndef ASM_ARM_MMU_H
   2 #define ASM_ARM_MMU_H
   3
   4 /*
   5     Copyright © 2013, The AROS Development Team. All rights reserved.
   6     $Id$
   7 */
   8
   9 #include <exec/types.h>
  10 #include <inttypes.h>
  11
  12 typedef struct pte_ {
  13     union {
  14         struct {
  15             unsigned type:2;
  16             unsigned sbz:3;
  17             unsigned domain:4;
  18             unsigned imp:1;
  19             unsigned base_address:22;
  20         } coarse;
  21         struct {
  22             unsigned type:2;
  23             unsigned b:1;
  24             unsigned c:1;
  25             unsigned xn:1;
  26             unsigned domain:4;
  27             unsigned imp:1;
  28             unsigned ap:2;
  29             unsigned tex:3;
  30             unsigned apx:1;
  31             unsigned s:1;
  32             unsigned ng:1;
  33             unsigned supersection:1;
  34             unsigned sbz:1;
  35             unsigned base_address:12;
  36         } section;
  37         struct {
  38             unsigned type:2;
  39             unsigned b:1;
  40             unsigned c:1;
  41             unsigned xn:1;
  42             unsigned base_address_3:4;
  43             unsigned imp:1;
  44             unsigned ap:2;
  45             unsigned tex:3;
  46             unsigned apx:1;
  47             unsigned s:1;
  48             unsigned ng:1;
  49             unsigned supersection:1;
  50             unsigned sbz:1;
  51             unsigned base_address_2:4;
  52             unsigned base_address_1:8;
  53         } supersection;
  54         uint32_t    raw;
  55     };
  56 } pde_t;
  57
  58 typedef struct {
  59     union {
  60         struct {
  61             unsigned type:2;
  62             unsigned b:1;
  63             unsigned c:1;
  64             unsigned ap:2;
  65             unsigned sbz:3;
  66             unsigned apx:1;
  67             unsigned s:1;
  68             unsigned ng:1;
  69             unsigned tex:3;
  70             unsigned xn:1;
  71             unsigned base_address:16;
  72         } large_page;
  73         struct {
  74             unsigned type:2;
  75             unsigned b:1;
  76             unsigned c:1;
  77             unsigned ap:2;
  78             unsigned tex:3;
  79             unsigned apx:1;
  80             unsigned s:1;
  81             unsigned ng:1;
  82             unsigned base_address:20;
  83         } page;
  84         uint32_t    raw;
  85     };
  86 } pte_t;
  87
  88 #define PDE_TYPE_FAULT          0
  89 #define PDE_TYPE_COARSE         1
  90 #define PDE_TYPE_SECTION        2
  91 #define PDE_TYPE_RESERVED       3
  92
  93 #define PTE_TYPE_FAULT          0
  94 #define PTE_TYPE_LARGE_PAGE     1
  95 #define PTE_TYPE_PAGE           2
  96 #define PTE_TYPE_PAGE_XN        3
  97
  98
  99 #endif /* ASM_ARM_MMU_H */