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debug_kinfo.h

debug_kinfo.h 1.4 KB
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  1. // SPDX-License-Identifier: GPL-2.0
    2. 

  2. /*
    3. 

  3.  * debug_kinfo.h - backup kernel information for bootloader usage
    4. 

  4.  *
    5. 

  5.  * Copyright 2021 Google LLC
    6. 

  6.  */
    7. 

  7. 

  8. #ifndef DEBUG_KINFO_H
    9. 

  9. #define DEBUG_KINFO_H
    10. 

  10. 

  11. #include <linux/utsname.h>
    12. 

  12. 

  13. #define BUILD_INFO_LEN		256
    14. 

  14. #define DEBUG_KINFO_MAGIC	0xCCEEDDFF
    15. 

  15. 

  16. /*
    17. 

  17.  * Header structure must be byte-packed, since the table is provided to
    18. 

  18.  * bootloader.
    19. 

  19.  */
    20. 

  20. struct kernel_info {
    21. 

  21. 	/* For kallsyms */
    22. 

  22. 	__u8 enabled_all;
    23. 

  23. 	__u8 enabled_base_relative;
    24. 

  24. 	__u8 enabled_absolute_percpu;
    25. 

  25. 	__u8 enabled_cfi_clang;
    26. 

  26. 	__u32 num_syms;
    27. 

  27. 	__u16 name_len;
    28. 

  28. 	__u16 bit_per_long;
    29. 

  29. 	__u16 module_name_len;
    30. 

  30. 	__u16 symbol_len;
    31. 

  31. 	__u64 _addresses_pa;
    32. 

  32. 	__u64 _relative_pa;
    33. 

  33. 	__u64 _stext_pa;
    34. 

  34. 	__u64 _etext_pa;
    35. 

  35. 	__u64 _sinittext_pa;
    36. 

  36. 	__u64 _einittext_pa;
    37. 

  37. 	__u64 _end_pa;
    38. 

  38. 	__u64 _offsets_pa;
    39. 

  39. 	__u64 _names_pa;
    40. 

  40. 	__u64 _token_table_pa;
    41. 

  41. 	__u64 _token_index_pa;
    42. 

  42. 	__u64 _markers_pa;
    43. 

  43. 

  44. 	/* For frame pointer */
    45. 

  45. 	__u32 thread_size;
    46. 

  46. 

  47. 	/* For virt_to_phys */
    48. 

  48. 	__u64 swapper_pg_dir_pa;
    49. 

  49. 

  50. 	/* For linux banner */
    51. 

  51. 	__u8 last_uts_release[__NEW_UTS_LEN];
    52. 

  52. 

  53. 	/* Info of running build */
    54. 

  54. 	__u8 build_info[BUILD_INFO_LEN];
    55. 

  55. 

  56. 	/* For module kallsyms */
    57. 

  57. 	__u32 enabled_modules_tree_lookup;
    58. 

  58. 	__u32 mod_core_layout_offset;
    59. 

  59. 	__u32 mod_init_layout_offset;
    60. 

  60. 	__u32 mod_kallsyms_offset;
    61. 

  61. 	__u64 module_start_va;
    62. 

  62. 	__u64 module_end_va;
    63. 

  63. } __packed;
    64. 

  64. 

  65. struct kernel_all_info {
    66. 

  66. 	__u32 magic_number;
    67. 

  67. 	__u32 combined_checksum;
    68. 

  68. 	struct kernel_info info;
    69. 

  69. } __packed;
    70. 

  70. 

  71. #endif // DEBUG_KINFO_H
    72.