relocator_private.h 3.6 KB

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  1. /*
  2. * GRUB -- GRand Unified Bootloader
  3. * Copyright (C) 2009 Free Software Foundation, Inc.
  4. *
  5. * GRUB is free software: you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License as published by
  7. * the Free Software Foundation, either version 3 of the License, or
  8. * (at your option) any later version.
  9. *
  10. * GRUB is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13. * GNU General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU General Public License
  16. * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
  17. */
  18. #ifndef GRUB_RELOCATOR_PRIVATE_HEADER
  19. #define GRUB_RELOCATOR_PRIVATE_HEADER 1
  20. #include <grub/types.h>
  21. #include <grub/err.h>
  22. #include <grub/mm_private.h>
  23. extern grub_size_t grub_relocator_align;
  24. extern grub_size_t grub_relocator_forward_size;
  25. extern grub_size_t grub_relocator_backward_size;
  26. extern grub_size_t grub_relocator_jumper_size;
  27. void
  28. grub_cpu_relocator_init (void);
  29. grub_err_t
  30. grub_relocator_prepare_relocs (struct grub_relocator *rel,
  31. grub_addr_t addr,
  32. void **relstart, grub_size_t *relsize);
  33. void grub_cpu_relocator_forward (void *rels, void *src, void *tgt,
  34. grub_size_t size);
  35. void grub_cpu_relocator_backward (void *rels, void *src, void *tgt,
  36. grub_size_t size);
  37. void grub_cpu_relocator_jumper (void *rels, grub_addr_t addr);
  38. /* Remark: GRUB_RELOCATOR_FIRMWARE_REQUESTS_QUANT_LOG = 1 or 2
  39. aren't supported. */
  40. #ifdef GRUB_MACHINE_IEEE1275
  41. #define GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS 1
  42. #define GRUB_RELOCATOR_FIRMWARE_REQUESTS_QUANT_LOG 0
  43. #elif defined (GRUB_MACHINE_EFI)
  44. #define GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS 1
  45. #define GRUB_RELOCATOR_FIRMWARE_REQUESTS_QUANT_LOG 12
  46. #else
  47. #define GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS 0
  48. #endif
  49. #if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS && GRUB_RELOCATOR_FIRMWARE_REQUESTS_QUANT_LOG != 0
  50. #define GRUB_RELOCATOR_HAVE_LEFTOVERS 1
  51. #else
  52. #define GRUB_RELOCATOR_HAVE_LEFTOVERS 0
  53. #endif
  54. #if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
  55. #define GRUB_RELOCATOR_FIRMWARE_REQUESTS_QUANT (1 << GRUB_RELOCATOR_FIRMWARE_REQUESTS_QUANT_LOG)
  56. #endif
  57. struct grub_relocator_mmap_event
  58. {
  59. enum {
  60. IN_REG_START = 0,
  61. IN_REG_END = 1,
  62. REG_BEG_START = 2,
  63. REG_BEG_END = REG_BEG_START | 1,
  64. #if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
  65. REG_FIRMWARE_START = 4,
  66. REG_FIRMWARE_END = REG_FIRMWARE_START | 1,
  67. /* To track the regions already in heap. */
  68. FIRMWARE_BLOCK_START = 6,
  69. FIRMWARE_BLOCK_END = FIRMWARE_BLOCK_START | 1,
  70. #endif
  71. #if GRUB_RELOCATOR_HAVE_LEFTOVERS
  72. REG_LEFTOVER_START = 8,
  73. REG_LEFTOVER_END = REG_LEFTOVER_START | 1,
  74. #endif
  75. COLLISION_START = 10,
  76. COLLISION_END = COLLISION_START | 1
  77. } type;
  78. grub_phys_addr_t pos;
  79. union
  80. {
  81. struct
  82. {
  83. grub_mm_region_t reg;
  84. grub_mm_header_t hancestor;
  85. grub_mm_region_t *regancestor;
  86. grub_mm_header_t head;
  87. };
  88. #if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
  89. struct grub_relocator_fw_leftover *leftover;
  90. #endif
  91. };
  92. };
  93. /* Return 0 on failure, 1 on success. The failure here
  94. can be very time-expensive, so please make sure fill events is accurate. */
  95. #if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
  96. int grub_relocator_firmware_alloc_region (grub_phys_addr_t start,
  97. grub_size_t size);
  98. unsigned grub_relocator_firmware_fill_events (struct grub_relocator_mmap_event *events);
  99. unsigned grub_relocator_firmware_get_max_events (void);
  100. void grub_relocator_firmware_free_region (grub_phys_addr_t start,
  101. grub_size_t size);
  102. #endif
  103. #endif