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  1. /*
  2.  * Copyright (c) 2003-2007 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup arm32  
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_arm32_TYPES_H_
  36. #define KERN_arm32_TYPES_H_
  37.  
  38. #define NULL 0
  39. #define false 0
  40. #define true 1
  41.  
  42. typedef signed char int8_t;
  43. typedef signed short int16_t;
  44. typedef signed long int32_t;
  45. typedef signed long long int64_t;
  46.  
  47. typedef unsigned char uint8_t;
  48. typedef unsigned short uint16_t;
  49. typedef unsigned long uint32_t;
  50. typedef unsigned long long uint64_t;
  51.  
  52. typedef uint32_t size_t;
  53. typedef uint32_t count_t;
  54. typedef uint32_t index_t;
  55.  
  56. typedef uint32_t uintptr_t;
  57. typedef uint32_t pfn_t;
  58.  
  59. typedef uint32_t ipl_t;
  60.  
  61. typedef uint32_t unative_t;
  62. typedef int32_t native_t;
  63.  
  64. typedef uint8_t bool;
  65. typedef uint64_t task_id_t;
  66. typedef uint32_t context_id_t;
  67.  
  68. typedef int32_t inr_t;
  69. typedef int32_t devno_t;
  70.  
  71. /** Page Table Entry. */
  72. typedef struct {
  73.     /**PageTables are so different that we have different types
  74.      *   for level 0 and level1 page table entries
  75.      */  
  76.   unsigned dummy : 32;
  77. } pte_t;
  78.  
  79. typedef struct {
  80.     unsigned descriptor_type     : 2;
  81.     unsigned machine_depend      : 3; // Alf: ???? v Architecture previev neni vyznam definovan
  82.     unsigned domain              : 4;
  83.     unsigned should_be_zero      : 1;
  84.     unsigned coarse_table_addr   : 22;
  85. } __attribute__ ((packed)) pte_level0_t;
  86.  
  87. //TODO Alf: Comments
  88. typedef struct {
  89.     unsigned descriptor_type     : 2;
  90.     unsigned bufferable          : 1;
  91.     unsigned cacheable           : 1;
  92.     unsigned access_permission_0 : 2;
  93.     unsigned access_permission_1 : 2;
  94.     unsigned access_permission_2 : 2;
  95.     unsigned access_permission_3 : 2;
  96.     unsigned frame_base_addr     : 20;
  97. } __attribute__ ((packed)) pte_level1_t;
  98.  
  99. /// Page table level 1 access permission constants
  100. /// User no acess, kernel no access
  101. #define pte_ap_user_no_kernel_no 0
  102. /// User no acess, kernel read/write
  103. #define pte_ap_user_no_kernel_rw 1
  104. /// User read only, kernel read/write
  105. #define pte_ap_user_ro_kernel_rw 2
  106. /// User read/write, kernel read/write
  107. #define pte_ap_user_rw_kernel_rw 2
  108.  
  109. /// Value of descriptor_type in pte_level0_t and pte_level1_t that signal not present flag
  110. #define pte_descriptor_not_preset 0
  111. /// Value of descriptor_type in pte_level0_t that signal a coarse page table format
  112. #define pte_descriptor_coarse_table 1
  113. /// Value of descriptor_type in pte_level1_t that signal a small page table entry format
  114. #define pte_descriptor_small_page 2
  115.  
  116. #endif
  117.  
  118. /** @}
  119.  */
  120.