lsefisystab.c 3.8 KB

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  1. /* lsefisystab.c - Display EFI systab. */
  2. /*
  3. * GRUB -- GRand Unified Bootloader
  4. * Copyright (C) 2008 Free Software Foundation, Inc.
  5. *
  6. * GRUB is free software: you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation, either version 3 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * GRUB is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
  18. */
  19. #include <grub/types.h>
  20. #include <grub/mm.h>
  21. #include <grub/dl.h>
  22. #include <grub/misc.h>
  23. #include <grub/normal.h>
  24. #include <grub/charset.h>
  25. #include <grub/efi/api.h>
  26. #include <grub/efi/efi.h>
  27. GRUB_MOD_LICENSE ("GPLv3+");
  28. struct guid_mapping
  29. {
  30. grub_efi_guid_t guid;
  31. const char *name;
  32. };
  33. static const struct guid_mapping guid_mappings[] =
  34. {
  35. { GRUB_EFI_ACPI_20_TABLE_GUID, "ACPI-2.0"},
  36. { GRUB_EFI_ACPI_TABLE_GUID, "ACPI-1.0"},
  37. { GRUB_EFI_CRC32_GUIDED_SECTION_EXTRACTION_GUID,
  38. "CRC32 GUIDED SECTION EXTRACTION"},
  39. { GRUB_EFI_DEBUG_IMAGE_INFO_TABLE_GUID, "DEBUG IMAGE INFO"},
  40. { GRUB_EFI_DXE_SERVICES_TABLE_GUID, "DXE SERVICES"},
  41. { GRUB_EFI_HCDP_TABLE_GUID, "HCDP"},
  42. { GRUB_EFI_HOB_LIST_GUID, "HOB LIST"},
  43. { GRUB_EFI_LZMA_CUSTOM_DECOMPRESS_GUID, "LZMA CUSTOM DECOMPRESS"},
  44. { GRUB_EFI_MEMORY_TYPE_INFORMATION_GUID, "MEMORY TYPE INFO"},
  45. { GRUB_EFI_MPS_TABLE_GUID, "MPS"},
  46. { GRUB_EFI_SAL_TABLE_GUID, "SAL"},
  47. { GRUB_EFI_SMBIOS_TABLE_GUID, "SMBIOS"},
  48. { GRUB_EFI_SYSTEM_RESOURCE_TABLE_GUID, "SYSTEM RESOURCE TABLE"},
  49. { GRUB_EFI_TIANO_CUSTOM_DECOMPRESS_GUID, "TIANO CUSTOM DECOMPRESS"},
  50. { GRUB_EFI_TSC_FREQUENCY_GUID, "TSC FREQUENCY"},
  51. };
  52. static grub_err_t
  53. grub_cmd_lsefisystab (struct grub_command *cmd __attribute__ ((unused)),
  54. int argc __attribute__ ((unused)),
  55. char **args __attribute__ ((unused)))
  56. {
  57. const grub_efi_system_table_t *st = grub_efi_system_table;
  58. grub_efi_configuration_table_t *t;
  59. unsigned int i;
  60. grub_printf ("Address: %p\n", st);
  61. grub_printf ("Signature: %016" PRIxGRUB_UINT64_T " revision: %08x\n",
  62. st->hdr.signature, st->hdr.revision);
  63. {
  64. char *vendor;
  65. grub_uint16_t *vendor_utf16;
  66. grub_printf ("Vendor: ");
  67. for (vendor_utf16 = st->firmware_vendor; *vendor_utf16; vendor_utf16++);
  68. vendor = grub_malloc (4 * (vendor_utf16 - st->firmware_vendor) + 1);
  69. if (!vendor)
  70. return grub_errno;
  71. *grub_utf16_to_utf8 ((grub_uint8_t *) vendor, st->firmware_vendor,
  72. vendor_utf16 - st->firmware_vendor) = 0;
  73. grub_printf ("%s", vendor);
  74. grub_free (vendor);
  75. }
  76. grub_printf (", Version=%x\n", st->firmware_revision);
  77. grub_printf ("%lld tables:\n", (long long) st->num_table_entries);
  78. t = st->configuration_table;
  79. for (i = 0; i < st->num_table_entries; i++)
  80. {
  81. unsigned int j;
  82. grub_printf ("%p ", t->vendor_table);
  83. grub_printf ("%08x-%04x-%04x-",
  84. t->vendor_guid.data1, t->vendor_guid.data2,
  85. t->vendor_guid.data3);
  86. for (j = 0; j < 8; j++)
  87. grub_printf ("%02x", t->vendor_guid.data4[j]);
  88. for (j = 0; j < ARRAY_SIZE (guid_mappings); j++)
  89. if (grub_memcmp (&guid_mappings[j].guid, &t->vendor_guid,
  90. sizeof (grub_efi_guid_t)) == 0)
  91. grub_printf (" %s", guid_mappings[j].name);
  92. grub_printf ("\n");
  93. t++;
  94. }
  95. return GRUB_ERR_NONE;
  96. }
  97. static grub_command_t cmd;
  98. GRUB_MOD_INIT(lsefisystab)
  99. {
  100. cmd = grub_register_command ("lsefisystab", grub_cmd_lsefisystab,
  101. "", "Display EFI system tables.");
  102. }
  103. GRUB_MOD_FINI(lsefisystab)
  104. {
  105. grub_unregister_command (cmd);
  106. }