cmd/efidebug.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  UEFI Shell-like command
   4  *
   5  *  Copyright (c) 2018 AKASHI Takahiro, Linaro Limited
   6  */
   7
   8 #include <charset.h>
   9 #include <common.h>
  10 #include <command.h>
  11 #include <efi_loader.h>
  12 #include <exports.h>
  13 #include <hexdump.h>
  14 #include <malloc.h>
  15 #include <mapmem.h>
  16 #include <search.h>
  17 #include <linux/ctype.h>
  18
  19 #define BS systab.boottime
  20
  21 /**
  22  * efi_get_device_handle_info() - get information of UEFI device
  23  *
  24  * @handle:             Handle of UEFI device
  25  * @dev_path_text:      Pointer to text of device path
  26  * Return:              0 on success, -1 on failure
  27  *
  28  * Currently return a formatted text of device path.
  29  */
  30 static int efi_get_device_handle_info(efi_handle_t handle, u16 **dev_path_text)
  31 {
  32         struct efi_device_path *dp;
  33         efi_status_t ret;
  34
  35         ret = EFI_CALL(BS->open_protocol(handle, &efi_guid_device_path,
  36                                          (void **)&dp, NULL /* FIXME */, NULL,
  37                                          EFI_OPEN_PROTOCOL_GET_PROTOCOL));
  38         if (ret == EFI_SUCCESS) {
  39                 *dev_path_text = efi_dp_str(dp);
  40                 return 0;
  41         } else {
  42                 return -1;
  43         }
  44 }
  45
  46 #define EFI_HANDLE_WIDTH ((int)sizeof(efi_handle_t) * 2)
  47
  48 static const char spc[] = "                ";
  49 static const char sep[] = "================";
  50
  51 /**
  52  * do_efi_show_devices() - show UEFI devices
  53  *
  54  * @cmdtp:      Command table
  55  * @flag:       Command flag
  56  * @argc:       Number of arguments
  57  * @argv:       Argument array
  58  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
  59  *
  60  * Implement efidebug "devices" sub-command.
  61  * Show all UEFI devices and their information.
  62  */
  63 static int do_efi_show_devices(struct cmd_tbl *cmdtp, int flag,
  64                                int argc, char *const argv[])
  65 {
  66         efi_handle_t *handles;
  67         efi_uintn_t num, i;
  68         u16 *dev_path_text;
  69         efi_status_t ret;
  70
  71         ret = EFI_CALL(efi_locate_handle_buffer(ALL_HANDLES, NULL, NULL,
  72                                                 &num, &handles));
  73         if (ret != EFI_SUCCESS)
  74                 return CMD_RET_FAILURE;
  75
  76         if (!num)
  77                 return CMD_RET_SUCCESS;
  78
  79         printf("Device%.*s Device Path\n", EFI_HANDLE_WIDTH - 6, spc);
  80         printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep);
  81         for (i = 0; i < num; i++) {
  82                 if (!efi_get_device_handle_info(handles[i], &dev_path_text)) {
  83                         printf("%p %ls\n", handles[i], dev_path_text);
  84                         efi_free_pool(dev_path_text);
  85                 }
  86         }
  87
  88         efi_free_pool(handles);
  89
  90         return CMD_RET_SUCCESS;
  91 }
  92
  93 /**
  94  * efi_get_driver_handle_info() - get information of UEFI driver
  95  *
  96  * @handle:             Handle of UEFI device
  97  * @driver_name:        Driver name
  98  * @image_path:         Pointer to text of device path
  99  * Return:              0 on success, -1 on failure
 100  *
 101  * Currently return no useful information as all UEFI drivers are
 102  * built-in..
 103  */
 104 static int efi_get_driver_handle_info(efi_handle_t handle, u16 **driver_name,
 105                                       u16 **image_path)
 106 {
 107         struct efi_handler *handler;
 108         struct efi_loaded_image *image;
 109         efi_status_t ret;
 110
 111         /*
 112          * driver name
 113          * TODO: support EFI_COMPONENT_NAME2_PROTOCOL
 114          */
 115         *driver_name = NULL;
 116
 117         /* image name */
 118         ret = efi_search_protocol(handle, &efi_guid_loaded_image, &handler);
 119         if (ret != EFI_SUCCESS) {
 120                 *image_path = NULL;
 121                 return 0;
 122         }
 123
 124         image = handler->protocol_interface;
 125         *image_path = efi_dp_str(image->file_path);
 126
 127         return 0;
 128 }
 129
 130 /**
 131  * do_efi_show_drivers() - show UEFI drivers
 132  *
 133  * @cmdtp:      Command table
 134  * @flag:       Command flag
 135  * @argc:       Number of arguments
 136  * @argv:       Argument array
 137  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 138  *
 139  * Implement efidebug "drivers" sub-command.
 140  * Show all UEFI drivers and their information.
 141  */
 142 static int do_efi_show_drivers(struct cmd_tbl *cmdtp, int flag,
 143                                int argc, char *const argv[])
 144 {
 145         efi_handle_t *handles;
 146         efi_uintn_t num, i;
 147         u16 *driver_name, *image_path_text;
 148         efi_status_t ret;
 149
 150         ret = EFI_CALL(efi_locate_handle_buffer(
 151                                 BY_PROTOCOL, &efi_guid_driver_binding_protocol,
 152                                 NULL, &num, &handles));
 153         if (ret != EFI_SUCCESS)
 154                 return CMD_RET_FAILURE;
 155
 156         if (!num)
 157                 return CMD_RET_SUCCESS;
 158
 159         printf("Driver%.*s Name                 Image Path\n",
 160                EFI_HANDLE_WIDTH - 6, spc);
 161         printf("%.*s ==================== ====================\n",
 162                EFI_HANDLE_WIDTH, sep);
 163         for (i = 0; i < num; i++) {
 164                 if (!efi_get_driver_handle_info(handles[i], &driver_name,
 165                                                 &image_path_text)) {
 166                         if (image_path_text)
 167                                 printf("%p %-20ls %ls\n", handles[i],
 168                                        driver_name, image_path_text);
 169                         else
 170                                 printf("%p %-20ls <built-in>\n",
 171                                        handles[i], driver_name);
 172                         efi_free_pool(driver_name);
 173                         efi_free_pool(image_path_text);
 174                 }
 175         }
 176
 177         efi_free_pool(handles);
 178
 179         return CMD_RET_SUCCESS;
 180 }
 181
 182 static const struct {
 183         const char *text;
 184         const efi_guid_t guid;
 185 } guid_list[] = {
 186         {
 187                 "Device Path",
 188                 EFI_DEVICE_PATH_PROTOCOL_GUID,
 189         },
 190         {
 191                 "Device Path To Text",
 192                 EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID,
 193         },
 194         {
 195                 "Device Path Utilities",
 196                 EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID,
 197         },
 198         {
 199                 "Unicode Collation 2",
 200                 EFI_UNICODE_COLLATION_PROTOCOL2_GUID,
 201         },
 202         {
 203                 "Driver Binding",
 204                 EFI_DRIVER_BINDING_PROTOCOL_GUID,
 205         },
 206         {
 207                 "Simple Text Input",
 208                 EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID,
 209         },
 210         {
 211                 "Simple Text Input Ex",
 212                 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID,
 213         },
 214         {
 215                 "Simple Text Output",
 216                 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID,
 217         },
 218         {
 219                 "Block IO",
 220                 EFI_BLOCK_IO_PROTOCOL_GUID,
 221         },
 222         {
 223                 "Simple File System",
 224                 EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID,
 225         },
 226         {
 227                 "Loaded Image",
 228                 EFI_LOADED_IMAGE_PROTOCOL_GUID,
 229         },
 230         {
 231                 "Graphics Output",
 232                 EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID,
 233         },
 234         {
 235                 "HII String",
 236                 EFI_HII_STRING_PROTOCOL_GUID,
 237         },
 238         {
 239                 "HII Database",
 240                 EFI_HII_DATABASE_PROTOCOL_GUID,
 241         },
 242         {
 243                 "HII Config Routing",
 244                 EFI_HII_CONFIG_ROUTING_PROTOCOL_GUID,
 245         },
 246         {
 247                 "Load File2",
 248                 EFI_LOAD_FILE2_PROTOCOL_GUID,
 249         },
 250         {
 251                 "Simple Network",
 252                 EFI_SIMPLE_NETWORK_PROTOCOL_GUID,
 253         },
 254         {
 255                 "PXE Base Code",
 256                 EFI_PXE_BASE_CODE_PROTOCOL_GUID,
 257         },
 258         /* Configuration table GUIDs */
 259         {
 260                 "ACPI table",
 261                 EFI_ACPI_TABLE_GUID,
 262         },
 263         {
 264                 "device tree",
 265                 EFI_FDT_GUID,
 266         },
 267         {
 268                 "SMBIOS table",
 269                 SMBIOS_TABLE_GUID,
 270         },
 271         {
 272                 "Runtime properties",
 273                 EFI_RT_PROPERTIES_TABLE_GUID,
 274         },
 275 };
 276
 277 /**
 278  * get_guid_text - get string of GUID
 279  *
 280  * Return description of GUID.
 281  *
 282  * @guid:       GUID
 283  * Return:      description of GUID or NULL
 284  */
 285 static const char *get_guid_text(const void *guid)
 286 {
 287         int i;
 288
 289         for (i = 0; i < ARRAY_SIZE(guid_list); i++) {
 290                 /*
 291                  * As guidcmp uses memcmp() we can safely accept unaligned
 292                  * GUIDs.
 293                  */
 294                 if (!guidcmp(&guid_list[i].guid, guid))
 295                         return guid_list[i].text;
 296         }
 297
 298         return NULL;
 299 }
 300
 301 /**
 302  * do_efi_show_handles() - show UEFI handles
 303  *
 304  * @cmdtp:      Command table
 305  * @flag:       Command flag
 306  * @argc:       Number of arguments
 307  * @argv:       Argument array
 308  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 309  *
 310  * Implement efidebug "dh" sub-command.
 311  * Show all UEFI handles and their information, currently all protocols
 312  * added to handle.
 313  */
 314 static int do_efi_show_handles(struct cmd_tbl *cmdtp, int flag,
 315                                int argc, char *const argv[])
 316 {
 317         efi_handle_t *handles;
 318         efi_guid_t **guid;
 319         efi_uintn_t num, count, i, j;
 320         const char *guid_text;
 321         efi_status_t ret;
 322
 323         ret = EFI_CALL(efi_locate_handle_buffer(ALL_HANDLES, NULL, NULL,
 324                                                 &num, &handles));
 325         if (ret != EFI_SUCCESS)
 326                 return CMD_RET_FAILURE;
 327
 328         if (!num)
 329                 return CMD_RET_SUCCESS;
 330
 331         printf("Handle%.*s Protocols\n", EFI_HANDLE_WIDTH - 6, spc);
 332         printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep);
 333         for (i = 0; i < num; i++) {
 334                 printf("%p", handles[i]);
 335                 ret = EFI_CALL(BS->protocols_per_handle(handles[i], &guid,
 336                                                         &count));
 337                 if (ret || !count) {
 338                         putc('\n');
 339                         continue;
 340                 }
 341
 342                 for (j = 0; j < count; j++) {
 343                         if (j)
 344                                 printf(", ");
 345                         else
 346                                 putc(' ');
 347
 348                         guid_text = get_guid_text(guid[j]);
 349                         if (guid_text)
 350                                 puts(guid_text);
 351                         else
 352                                 printf("%pUl", guid[j]);
 353                 }
 354                 putc('\n');
 355         }
 356
 357         efi_free_pool(handles);
 358
 359         return CMD_RET_SUCCESS;
 360 }
 361
 362 /**
 363  * do_efi_show_images() - show UEFI images
 364  *
 365  * @cmdtp:      Command table
 366  * @flag:       Command flag
 367  * @argc:       Number of arguments
 368  * @argv:       Argument array
 369  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 370  *
 371  * Implement efidebug "images" sub-command.
 372  * Show all UEFI loaded images and their information.
 373  */
 374 static int do_efi_show_images(struct cmd_tbl *cmdtp, int flag,
 375                               int argc, char *const argv[])
 376 {
 377         efi_print_image_infos(NULL);
 378
 379         return CMD_RET_SUCCESS;
 380 }
 381
 382 static const char * const efi_mem_type_string[] = {
 383         [EFI_RESERVED_MEMORY_TYPE] = "RESERVED",
 384         [EFI_LOADER_CODE] = "LOADER CODE",
 385         [EFI_LOADER_DATA] = "LOADER DATA",
 386         [EFI_BOOT_SERVICES_CODE] = "BOOT CODE",
 387         [EFI_BOOT_SERVICES_DATA] = "BOOT DATA",
 388         [EFI_RUNTIME_SERVICES_CODE] = "RUNTIME CODE",
 389         [EFI_RUNTIME_SERVICES_DATA] = "RUNTIME DATA",
 390         [EFI_CONVENTIONAL_MEMORY] = "CONVENTIONAL",
 391         [EFI_UNUSABLE_MEMORY] = "UNUSABLE MEM",
 392         [EFI_ACPI_RECLAIM_MEMORY] = "ACPI RECLAIM MEM",
 393         [EFI_ACPI_MEMORY_NVS] = "ACPI NVS",
 394         [EFI_MMAP_IO] = "IO",
 395         [EFI_MMAP_IO_PORT] = "IO PORT",
 396         [EFI_PAL_CODE] = "PAL",
 397         [EFI_PERSISTENT_MEMORY_TYPE] = "PERSISTENT",
 398 };
 399
 400 static const struct efi_mem_attrs {
 401         const u64 bit;
 402         const char *text;
 403 } efi_mem_attrs[] = {
 404         {EFI_MEMORY_UC, "UC"},
 405         {EFI_MEMORY_UC, "UC"},
 406         {EFI_MEMORY_WC, "WC"},
 407         {EFI_MEMORY_WT, "WT"},
 408         {EFI_MEMORY_WB, "WB"},
 409         {EFI_MEMORY_UCE, "UCE"},
 410         {EFI_MEMORY_WP, "WP"},
 411         {EFI_MEMORY_RP, "RP"},
 412         {EFI_MEMORY_XP, "WP"},
 413         {EFI_MEMORY_NV, "NV"},
 414         {EFI_MEMORY_MORE_RELIABLE, "REL"},
 415         {EFI_MEMORY_RO, "RO"},
 416         {EFI_MEMORY_RUNTIME, "RT"},
 417 };
 418
 419 /**
 420  * print_memory_attributes() - print memory map attributes
 421  *
 422  * @attributes: Attribute value
 423  *
 424  * Print memory map attributes
 425  */
 426 static void print_memory_attributes(u64 attributes)
 427 {
 428         int sep, i;
 429
 430         for (sep = 0, i = 0; i < ARRAY_SIZE(efi_mem_attrs); i++)
 431                 if (attributes & efi_mem_attrs[i].bit) {
 432                         if (sep) {
 433                                 putc('|');
 434                         } else {
 435                                 putc(' ');
 436                                 sep = 1;
 437                         }
 438                         puts(efi_mem_attrs[i].text);
 439                 }
 440 }
 441
 442 #define EFI_PHYS_ADDR_WIDTH (int)(sizeof(efi_physical_addr_t) * 2)
 443
 444 /**
 445  * do_efi_show_memmap() - show UEFI memory map
 446  *
 447  * @cmdtp:      Command table
 448  * @flag:       Command flag
 449  * @argc:       Number of arguments
 450  * @argv:       Argument array
 451  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 452  *
 453  * Implement efidebug "memmap" sub-command.
 454  * Show UEFI memory map.
 455  */
 456 static int do_efi_show_memmap(struct cmd_tbl *cmdtp, int flag,
 457                               int argc, char *const argv[])
 458 {
 459         struct efi_mem_desc *memmap = NULL, *map;
 460         efi_uintn_t map_size = 0;
 461         const char *type;
 462         int i;
 463         efi_status_t ret;
 464
 465         ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL);
 466         if (ret == EFI_BUFFER_TOO_SMALL) {
 467                 map_size += sizeof(struct efi_mem_desc); /* for my own */
 468                 ret = efi_allocate_pool(EFI_LOADER_DATA, map_size,
 469                                         (void *)&memmap);
 470                 if (ret != EFI_SUCCESS)
 471                         return CMD_RET_FAILURE;
 472                 ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL);
 473         }
 474         if (ret != EFI_SUCCESS) {
 475                 efi_free_pool(memmap);
 476                 return CMD_RET_FAILURE;
 477         }
 478
 479         printf("Type             Start%.*s End%.*s Attributes\n",
 480                EFI_PHYS_ADDR_WIDTH - 5, spc, EFI_PHYS_ADDR_WIDTH - 3, spc);
 481         printf("================ %.*s %.*s ==========\n",
 482                EFI_PHYS_ADDR_WIDTH, sep, EFI_PHYS_ADDR_WIDTH, sep);
 483         /*
 484          * Coverity check: dereferencing null pointer "map."
 485          * This is a false positive as memmap will always be
 486          * populated by allocate_pool() above.
 487          */
 488         for (i = 0, map = memmap; i < map_size / sizeof(*map); map++, i++) {
 489                 if (map->type < ARRAY_SIZE(efi_mem_type_string))
 490                         type = efi_mem_type_string[map->type];
 491                 else
 492                         type = "(unknown)";
 493
 494                 printf("%-16s %.*llx-%.*llx", type,
 495                        EFI_PHYS_ADDR_WIDTH,
 496                        (u64)map_to_sysmem((void *)(uintptr_t)
 497                                           map->physical_start),
 498                        EFI_PHYS_ADDR_WIDTH,
 499                        (u64)map_to_sysmem((void *)(uintptr_t)
 500                                           (map->physical_start +
 501                                            map->num_pages * EFI_PAGE_SIZE)));
 502
 503                 print_memory_attributes(map->attribute);
 504                 putc('\n');
 505         }
 506
 507         efi_free_pool(memmap);
 508
 509         return CMD_RET_SUCCESS;
 510 }
 511
 512 /**
 513  * do_efi_show_tables() - show UEFI configuration tables
 514  *
 515  * @cmdtp:      Command table
 516  * @flag:       Command flag
 517  * @argc:       Number of arguments
 518  * @argv:       Argument array
 519  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 520  *
 521  * Implement efidebug "tables" sub-command.
 522  * Show UEFI configuration tables.
 523  */
 524 static int do_efi_show_tables(struct cmd_tbl *cmdtp, int flag,
 525                               int argc, char *const argv[])
 526 {
 527         efi_uintn_t i;
 528         const char *guid_str;
 529
 530         for (i = 0; i < systab.nr_tables; ++i) {
 531                 guid_str = get_guid_text(&systab.tables[i].guid);
 532                 if (!guid_str)
 533                         guid_str = "";
 534                 printf("%pUl %s\n", &systab.tables[i].guid, guid_str);
 535         }
 536
 537         return CMD_RET_SUCCESS;
 538 }
 539
 540 /**
 541  * do_efi_boot_add() - set UEFI load option
 542  *
 543  * @cmdtp:      Command table
 544  * @flag:       Command flag
 545  * @argc:       Number of arguments
 546  * @argv:       Argument array
 547  * Return:      CMD_RET_SUCCESS on success,
 548  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
 549  *
 550  * Implement efidebug "boot add" sub-command. Create or change UEFI load option.
 551  *
 552  *     efidebug boot add <id> <label> <interface> <devnum>[:<part>] <file> <options>
 553  */
 554 static int do_efi_boot_add(struct cmd_tbl *cmdtp, int flag,
 555                            int argc, char *const argv[])
 556 {
 557         int id;
 558         char *endp;
 559         char var_name[9];
 560         u16 var_name16[9], *p;
 561         efi_guid_t guid;
 562         size_t label_len, label_len16;
 563         u16 *label;
 564         struct efi_device_path *device_path = NULL, *file_path = NULL;
 565         struct efi_load_option lo;
 566         void *data = NULL;
 567         efi_uintn_t size;
 568         efi_status_t ret;
 569         int r = CMD_RET_SUCCESS;
 570
 571         if (argc < 6 || argc > 7)
 572                 return CMD_RET_USAGE;
 573
 574         id = (int)simple_strtoul(argv[1], &endp, 16);
 575         if (*endp != '\0' || id > 0xffff)
 576                 return CMD_RET_USAGE;
 577
 578         sprintf(var_name, "Boot%04X", id);
 579         p = var_name16;
 580         utf8_utf16_strncpy(&p, var_name, 9);
 581
 582         guid = efi_global_variable_guid;
 583
 584         /* attributes */
 585         lo.attributes = LOAD_OPTION_ACTIVE; /* always ACTIVE */
 586
 587         /* label */
 588         label_len = strlen(argv[2]);
 589         label_len16 = utf8_utf16_strnlen(argv[2], label_len);
 590         label = malloc((label_len16 + 1) * sizeof(u16));
 591         if (!label)
 592                 return CMD_RET_FAILURE;
 593         lo.label = label; /* label will be changed below */
 594         utf8_utf16_strncpy(&label, argv[2], label_len);
 595
 596         /* file path */
 597         ret = efi_dp_from_name(argv[3], argv[4], argv[5], &device_path,
 598                                &file_path);
 599         if (ret != EFI_SUCCESS) {
 600                 printf("Cannot create device path for \"%s %s\"\n",
 601                        argv[3], argv[4]);
 602                 r = CMD_RET_FAILURE;
 603                 goto out;
 604         }
 605         lo.file_path = file_path;
 606         lo.file_path_length = efi_dp_size(file_path)
 607                                 + sizeof(struct efi_device_path); /* for END */
 608
 609         /* optional data */
 610         if (argc == 6)
 611                 lo.optional_data = NULL;
 612         else
 613                 lo.optional_data = (const u8 *)argv[6];
 614
 615         size = efi_serialize_load_option(&lo, (u8 **)&data);
 616         if (!size) {
 617                 r = CMD_RET_FAILURE;
 618                 goto out;
 619         }
 620
 621         ret = EFI_CALL(efi_set_variable(var_name16, &guid,
 622                                         EFI_VARIABLE_NON_VOLATILE |
 623                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
 624                                         EFI_VARIABLE_RUNTIME_ACCESS,
 625                                         size, data));
 626         if (ret != EFI_SUCCESS) {
 627                 printf("Cannot set %ls\n", var_name16);
 628                 r = CMD_RET_FAILURE;
 629         }
 630 out:
 631         free(data);
 632         efi_free_pool(device_path);
 633         efi_free_pool(file_path);
 634         free(lo.label);
 635
 636         return r;
 637 }
 638
 639 /**
 640  * do_efi_boot_rm() - delete UEFI load options
 641  *
 642  * @cmdtp:      Command table
 643  * @flag:       Command flag
 644  * @argc:       Number of arguments
 645  * @argv:       Argument array
 646  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 647  *
 648  * Implement efidebug "boot rm" sub-command.
 649  * Delete UEFI load options.
 650  *
 651  *     efidebug boot rm <id> ...
 652  */
 653 static int do_efi_boot_rm(struct cmd_tbl *cmdtp, int flag,
 654                           int argc, char *const argv[])
 655 {
 656         efi_guid_t guid;
 657         int id, i;
 658         char *endp;
 659         char var_name[9];
 660         u16 var_name16[9], *p;
 661         efi_status_t ret;
 662
 663         if (argc == 1)
 664                 return CMD_RET_USAGE;
 665
 666         guid = efi_global_variable_guid;
 667         for (i = 1; i < argc; i++, argv++) {
 668                 id = (int)simple_strtoul(argv[1], &endp, 16);
 669                 if (*endp != '\0' || id > 0xffff)
 670                         return CMD_RET_FAILURE;
 671
 672                 sprintf(var_name, "Boot%04X", id);
 673                 p = var_name16;
 674                 utf8_utf16_strncpy(&p, var_name, 9);
 675
 676                 ret = EFI_CALL(efi_set_variable(var_name16, &guid, 0, 0, NULL));
 677                 if (ret) {
 678                         printf("Cannot remove %ls\n", var_name16);
 679                         return CMD_RET_FAILURE;
 680                 }
 681         }
 682
 683         return CMD_RET_SUCCESS;
 684 }
 685
 686 /**
 687  * show_efi_boot_opt_data() - dump UEFI load option
 688  *
 689  * @varname16:  variable name
 690  * @data:       value of UEFI load option variable
 691  * @size:       size of the boot option
 692  *
 693  * Decode the value of UEFI load option variable and print information.
 694  */
 695 static void show_efi_boot_opt_data(u16 *varname16, void *data, size_t size)
 696 {
 697         struct efi_load_option lo;
 698         char *label, *p;
 699         size_t label_len16, label_len;
 700         u16 *dp_str;
 701
 702         efi_deserialize_load_option(&lo, data);
 703
 704         label_len16 = u16_strlen(lo.label);
 705         label_len = utf16_utf8_strnlen(lo.label, label_len16);
 706         label = malloc(label_len + 1);
 707         if (!label)
 708                 return;
 709         p = label;
 710         utf16_utf8_strncpy(&p, lo.label, label_len16);
 711
 712         printf("%ls:\nattributes: %c%c%c (0x%08x)\n",
 713                varname16,
 714                /* ACTIVE */
 715                lo.attributes & LOAD_OPTION_ACTIVE ? 'A' : '-',
 716                /* FORCE RECONNECT */
 717                lo.attributes & LOAD_OPTION_FORCE_RECONNECT ? 'R' : '-',
 718                /* HIDDEN */
 719                lo.attributes & LOAD_OPTION_HIDDEN ? 'H' : '-',
 720                lo.attributes);
 721         printf("  label: %s\n", label);
 722
 723         dp_str = efi_dp_str(lo.file_path);
 724         printf("  file_path: %ls\n", dp_str);
 725         efi_free_pool(dp_str);
 726
 727         printf("  data:\n");
 728         print_hex_dump("    ", DUMP_PREFIX_OFFSET, 16, 1,
 729                        lo.optional_data, size + (u8 *)data -
 730                        (u8 *)lo.optional_data, true);
 731         free(label);
 732 }
 733
 734 /**
 735  * show_efi_boot_opt() - dump UEFI load option
 736  *
 737  * @varname16:  variable name
 738  *
 739  * Dump information defined by UEFI load option.
 740  */
 741 static void show_efi_boot_opt(u16 *varname16)
 742 {
 743         void *data;
 744         efi_uintn_t size;
 745         efi_status_t ret;
 746
 747         size = 0;
 748         ret = EFI_CALL(efi_get_variable(varname16, &efi_global_variable_guid,
 749                                         NULL, &size, NULL));
 750         if (ret == EFI_BUFFER_TOO_SMALL) {
 751                 data = malloc(size);
 752                 if (!data) {
 753                         printf("ERROR: Out of memory\n");
 754                         return;
 755                 }
 756                 ret = EFI_CALL(efi_get_variable(varname16,
 757                                                 &efi_global_variable_guid,
 758                                                 NULL, &size, data));
 759                 if (ret == EFI_SUCCESS)
 760                         show_efi_boot_opt_data(varname16, data, size);
 761                 free(data);
 762         }
 763 }
 764
 765 static int u16_tohex(u16 c)
 766 {
 767         if (c >= '0' && c <= '9')
 768                 return c - '0';
 769         if (c >= 'A' && c <= 'F')
 770                 return c - 'A' + 10;
 771
 772         /* not hexadecimal */
 773         return -1;
 774 }
 775
 776 /**
 777  * show_efi_boot_dump() - dump all UEFI load options
 778  *
 779  * @cmdtp:      Command table
 780  * @flag:       Command flag
 781  * @argc:       Number of arguments
 782  * @argv:       Argument array
 783  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 784  *
 785  * Implement efidebug "boot dump" sub-command.
 786  * Dump information of all UEFI load options defined.
 787  *
 788  *     efidebug boot dump
 789  */
 790 static int do_efi_boot_dump(struct cmd_tbl *cmdtp, int flag,
 791                             int argc, char *const argv[])
 792 {
 793         u16 *var_name16, *p;
 794         efi_uintn_t buf_size, size;
 795         efi_guid_t guid;
 796         int id, i, digit;
 797         efi_status_t ret;
 798
 799         if (argc > 1)
 800                 return CMD_RET_USAGE;
 801
 802         buf_size = 128;
 803         var_name16 = malloc(buf_size);
 804         if (!var_name16)
 805                 return CMD_RET_FAILURE;
 806
 807         var_name16[0] = 0;
 808         for (;;) {
 809                 size = buf_size;
 810                 ret = EFI_CALL(efi_get_next_variable_name(&size, var_name16,
 811                                                           &guid));
 812                 if (ret == EFI_NOT_FOUND)
 813                         break;
 814                 if (ret == EFI_BUFFER_TOO_SMALL) {
 815                         buf_size = size;
 816                         p = realloc(var_name16, buf_size);
 817                         if (!p) {
 818                                 free(var_name16);
 819                                 return CMD_RET_FAILURE;
 820                         }
 821                         var_name16 = p;
 822                         ret = EFI_CALL(efi_get_next_variable_name(&size,
 823                                                                   var_name16,
 824                                                                   &guid));
 825                 }
 826                 if (ret != EFI_SUCCESS) {
 827                         free(var_name16);
 828                         return CMD_RET_FAILURE;
 829                 }
 830
 831                 if (memcmp(var_name16, L"Boot", 8))
 832                         continue;
 833
 834                 for (id = 0, i = 0; i < 4; i++) {
 835                         digit = u16_tohex(var_name16[4 + i]);
 836                         if (digit < 0)
 837                                 break;
 838                         id = (id << 4) + digit;
 839                 }
 840                 if (i == 4 && !var_name16[8])
 841                         show_efi_boot_opt(var_name16);
 842         }
 843
 844         free(var_name16);
 845
 846         return CMD_RET_SUCCESS;
 847 }
 848
 849 /**
 850  * show_efi_boot_order() - show order of UEFI load options
 851  *
 852  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 853  *
 854  * Show order of UEFI load options defined by BootOrder variable.
 855  */
 856 static int show_efi_boot_order(void)
 857 {
 858         u16 *bootorder;
 859         efi_uintn_t size;
 860         int num, i;
 861         char var_name[9];
 862         u16 var_name16[9], *p16;
 863         void *data;
 864         struct efi_load_option lo;
 865         char *label, *p;
 866         size_t label_len16, label_len;
 867         efi_status_t ret;
 868
 869         size = 0;
 870         ret = EFI_CALL(efi_get_variable(L"BootOrder", &efi_global_variable_guid,
 871                                         NULL, &size, NULL));
 872         if (ret != EFI_BUFFER_TOO_SMALL) {
 873                 if (ret == EFI_NOT_FOUND) {
 874                         printf("BootOrder not defined\n");
 875                         return CMD_RET_SUCCESS;
 876                 } else {
 877                         return CMD_RET_FAILURE;
 878                 }
 879         }
 880         bootorder = malloc(size);
 881         if (!bootorder) {
 882                 printf("ERROR: Out of memory\n");
 883                 return CMD_RET_FAILURE;
 884         }
 885         ret = EFI_CALL(efi_get_variable(L"BootOrder", &efi_global_variable_guid,
 886                                         NULL, &size, bootorder));
 887         if (ret != EFI_SUCCESS) {
 888                 ret = CMD_RET_FAILURE;
 889                 goto out;
 890         }
 891
 892         num = size / sizeof(u16);
 893         for (i = 0; i < num; i++) {
 894                 sprintf(var_name, "Boot%04X", bootorder[i]);
 895                 p16 = var_name16;
 896                 utf8_utf16_strncpy(&p16, var_name, 9);
 897
 898                 size = 0;
 899                 ret = EFI_CALL(efi_get_variable(var_name16,
 900                                                 &efi_global_variable_guid, NULL,
 901                                                 &size, NULL));
 902                 if (ret != EFI_BUFFER_TOO_SMALL) {
 903                         printf("%2d: %s: (not defined)\n", i + 1, var_name);
 904                         continue;
 905                 }
 906
 907                 data = malloc(size);
 908                 if (!data) {
 909                         ret = CMD_RET_FAILURE;
 910                         goto out;
 911                 }
 912                 ret = EFI_CALL(efi_get_variable(var_name16,
 913                                                 &efi_global_variable_guid, NULL,
 914                                                 &size, data));
 915                 if (ret != EFI_SUCCESS) {
 916                         free(data);
 917                         ret = CMD_RET_FAILURE;
 918                         goto out;
 919                 }
 920
 921                 efi_deserialize_load_option(&lo, data);
 922
 923                 label_len16 = u16_strlen(lo.label);
 924                 label_len = utf16_utf8_strnlen(lo.label, label_len16);
 925                 label = malloc(label_len + 1);
 926                 if (!label) {
 927                         free(data);
 928                         ret = CMD_RET_FAILURE;
 929                         goto out;
 930                 }
 931                 p = label;
 932                 utf16_utf8_strncpy(&p, lo.label, label_len16);
 933                 printf("%2d: %s: %s\n", i + 1, var_name, label);
 934                 free(label);
 935
 936                 free(data);
 937         }
 938 out:
 939         free(bootorder);
 940
 941         return ret;
 942 }
 943
 944 /**
 945  * do_efi_boot_next() - manage UEFI BootNext variable
 946  *
 947  * @cmdtp:      Command table
 948  * @flag:       Command flag
 949  * @argc:       Number of arguments
 950  * @argv:       Argument array
 951  * Return:      CMD_RET_SUCCESS on success,
 952  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
 953  *
 954  * Implement efidebug "boot next" sub-command.
 955  * Set BootNext variable.
 956  *
 957  *     efidebug boot next <id>
 958  */
 959 static int do_efi_boot_next(struct cmd_tbl *cmdtp, int flag,
 960                             int argc, char *const argv[])
 961 {
 962         u16 bootnext;
 963         efi_uintn_t size;
 964         char *endp;
 965         efi_guid_t guid;
 966         efi_status_t ret;
 967         int r = CMD_RET_SUCCESS;
 968
 969         if (argc != 2)
 970                 return CMD_RET_USAGE;
 971
 972         bootnext = (u16)simple_strtoul(argv[1], &endp, 16);
 973         if (*endp) {
 974                 printf("invalid value: %s\n", argv[1]);
 975                 r = CMD_RET_FAILURE;
 976                 goto out;
 977         }
 978
 979         guid = efi_global_variable_guid;
 980         size = sizeof(u16);
 981         ret = EFI_CALL(efi_set_variable(L"BootNext", &guid,
 982                                         EFI_VARIABLE_NON_VOLATILE |
 983                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
 984                                         EFI_VARIABLE_RUNTIME_ACCESS,
 985                                         size, &bootnext));
 986         if (ret != EFI_SUCCESS) {
 987                 printf("Cannot set BootNext\n");
 988                 r = CMD_RET_FAILURE;
 989         }
 990 out:
 991         return r;
 992 }
 993
 994 /**
 995  * do_efi_boot_order() - manage UEFI BootOrder variable
 996  *
 997  * @cmdtp:      Command table
 998  * @flag:       Command flag
 999  * @argc:       Number of arguments
1000  * @argv:       Argument array
1001  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
1002  *
1003  * Implement efidebug "boot order" sub-command.
1004  * Show order of UEFI load options, or change it in BootOrder variable.
1005  *
1006  *     efidebug boot order [<id> ...]
1007  */
1008 static int do_efi_boot_order(struct cmd_tbl *cmdtp, int flag,
1009                              int argc, char *const argv[])
1010 {
1011         u16 *bootorder = NULL;
1012         efi_uintn_t size;
1013         int id, i;
1014         char *endp;
1015         efi_guid_t guid;
1016         efi_status_t ret;
1017         int r = CMD_RET_SUCCESS;
1018
1019         if (argc == 1)
1020                 return show_efi_boot_order();
1021
1022         argc--;
1023         argv++;
1024
1025         size = argc * sizeof(u16);
1026         bootorder = malloc(size);
1027         if (!bootorder)
1028                 return CMD_RET_FAILURE;
1029
1030         for (i = 0; i < argc; i++) {
1031                 id = (int)simple_strtoul(argv[i], &endp, 16);
1032                 if (*endp != '\0' || id > 0xffff) {
1033                         printf("invalid value: %s\n", argv[i]);
1034                         r = CMD_RET_FAILURE;
1035                         goto out;
1036                 }
1037
1038                 bootorder[i] = (u16)id;
1039         }
1040
1041         guid = efi_global_variable_guid;
1042         ret = EFI_CALL(efi_set_variable(L"BootOrder", &guid,
1043                                         EFI_VARIABLE_NON_VOLATILE |
1044                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
1045                                         EFI_VARIABLE_RUNTIME_ACCESS,
1046                                         size, bootorder));
1047         if (ret != EFI_SUCCESS) {
1048                 printf("Cannot set BootOrder\n");
1049                 r = CMD_RET_FAILURE;
1050         }
1051 out:
1052         free(bootorder);
1053
1054         return r;
1055 }
1056
1057 static struct cmd_tbl cmd_efidebug_boot_sub[] = {
1058         U_BOOT_CMD_MKENT(add, CONFIG_SYS_MAXARGS, 1, do_efi_boot_add, "", ""),
1059         U_BOOT_CMD_MKENT(rm, CONFIG_SYS_MAXARGS, 1, do_efi_boot_rm, "", ""),
1060         U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_efi_boot_dump, "", ""),
1061         U_BOOT_CMD_MKENT(next, CONFIG_SYS_MAXARGS, 1, do_efi_boot_next, "", ""),
1062         U_BOOT_CMD_MKENT(order, CONFIG_SYS_MAXARGS, 1, do_efi_boot_order,
1063                          "", ""),
1064 };
1065
1066 /**
1067  * do_efi_boot_opt() - manage UEFI load options
1068  *
1069  * @cmdtp:      Command table
1070  * @flag:       Command flag
1071  * @argc:       Number of arguments
1072  * @argv:       Argument array
1073  * Return:      CMD_RET_SUCCESS on success,
1074  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1075  *
1076  * Implement efidebug "boot" sub-command.
1077  */
1078 static int do_efi_boot_opt(struct cmd_tbl *cmdtp, int flag,
1079                            int argc, char *const argv[])
1080 {
1081         struct cmd_tbl *cp;
1082
1083         if (argc < 2)
1084                 return CMD_RET_USAGE;
1085
1086         argc--; argv++;
1087
1088         cp = find_cmd_tbl(argv[0], cmd_efidebug_boot_sub,
1089                           ARRAY_SIZE(cmd_efidebug_boot_sub));
1090         if (!cp)
1091                 return CMD_RET_USAGE;
1092
1093         return cp->cmd(cmdtp, flag, argc, argv);
1094 }
1095
1096 /**
1097  * do_efi_test_bootmgr() - run simple bootmgr for test
1098  *
1099  * @cmdtp:      Command table
1100  * @flag:       Command flag
1101  * @argc:       Number of arguments
1102  * @argv:       Argument array
1103  * Return:      CMD_RET_SUCCESS on success,
1104  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1105  *
1106  * Implement efidebug "test bootmgr" sub-command.
1107  * Run simple bootmgr for test.
1108  *
1109  *     efidebug test bootmgr
1110  */
1111 static int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag,
1112                                int argc, char * const argv[])
1113 {
1114         efi_handle_t image;
1115         efi_uintn_t exit_data_size = 0;
1116         u16 *exit_data = NULL;
1117         efi_status_t ret;
1118
1119         ret = efi_bootmgr_load(&image);
1120         printf("efi_bootmgr_load() returned: %ld\n", ret & ~EFI_ERROR_MASK);
1121
1122         /* We call efi_start_image() even if error for test purpose. */
1123         ret = EFI_CALL(efi_start_image(image, &exit_data_size, &exit_data));
1124         printf("efi_start_image() returned: %ld\n", ret & ~EFI_ERROR_MASK);
1125         if (ret && exit_data)
1126                 efi_free_pool(exit_data);
1127
1128         efi_restore_gd();
1129
1130         return CMD_RET_SUCCESS;
1131 }
1132
1133 static struct cmd_tbl cmd_efidebug_test_sub[] = {
1134         U_BOOT_CMD_MKENT(bootmgr, CONFIG_SYS_MAXARGS, 1, do_efi_test_bootmgr,
1135                          "", ""),
1136 };
1137
1138 /**
1139  * do_efi_test() - manage UEFI load options
1140  *
1141  * @cmdtp:      Command table
1142  * @flag:       Command flag
1143  * @argc:       Number of arguments
1144  * @argv:       Argument array
1145  * Return:      CMD_RET_SUCCESS on success,
1146  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1147  *
1148  * Implement efidebug "test" sub-command.
1149  */
1150 static int do_efi_test(struct cmd_tbl *cmdtp, int flag,
1151                        int argc, char * const argv[])
1152 {
1153         struct cmd_tbl *cp;
1154
1155         if (argc < 2)
1156                 return CMD_RET_USAGE;
1157
1158         argc--; argv++;
1159
1160         cp = find_cmd_tbl(argv[0], cmd_efidebug_test_sub,
1161                           ARRAY_SIZE(cmd_efidebug_test_sub));
1162         if (!cp)
1163                 return CMD_RET_USAGE;
1164
1165         return cp->cmd(cmdtp, flag, argc, argv);
1166 }
1167
1168 /**
1169  * do_efi_query_info() - QueryVariableInfo EFI service
1170  *
1171  * @cmdtp:      Command table
1172  * @flag:       Command flag
1173  * @argc:       Number of arguments
1174  * @argv:       Argument array
1175  * Return:      CMD_RET_SUCCESS on success,
1176  *              CMD_RET_USAGE or CMD_RET_FAILURE on failure
1177  *
1178  * Implement efidebug "test" sub-command.
1179  */
1180
1181 static int do_efi_query_info(struct cmd_tbl *cmdtp, int flag,
1182                              int argc, char * const argv[])
1183 {
1184         efi_status_t ret;
1185         u32 attr = 0;
1186         u64 max_variable_storage_size;
1187         u64 remain_variable_storage_size;
1188         u64 max_variable_size;
1189         int i;
1190
1191         for (i = 1; i < argc; i++) {
1192                 if (!strcmp(argv[i], "-bs"))
1193                         attr |= EFI_VARIABLE_BOOTSERVICE_ACCESS;
1194                 else if (!strcmp(argv[i], "-rt"))
1195                         attr |= EFI_VARIABLE_RUNTIME_ACCESS;
1196                 else if (!strcmp(argv[i], "-nv"))
1197                         attr |= EFI_VARIABLE_NON_VOLATILE;
1198                 else if (!strcmp(argv[i], "-at"))
1199                         attr |=
1200                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;
1201         }
1202
1203         ret = EFI_CALL(efi_query_variable_info(attr,
1204                                                &max_variable_storage_size,
1205                                                &remain_variable_storage_size,
1206                                                &max_variable_size));
1207         if (ret != EFI_SUCCESS) {
1208                 printf("Error: Cannot query UEFI variables, r = %lu\n",
1209                        ret & ~EFI_ERROR_MASK);
1210                 return CMD_RET_FAILURE;
1211         }
1212
1213         printf("Max storage size %llu\n", max_variable_storage_size);
1214         printf("Remaining storage size %llu\n", remain_variable_storage_size);
1215         printf("Max variable size %llu\n", max_variable_size);
1216
1217         return CMD_RET_SUCCESS;
1218 }
1219
1220 static struct cmd_tbl cmd_efidebug_sub[] = {
1221         U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""),
1222         U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices,
1223                          "", ""),
1224         U_BOOT_CMD_MKENT(drivers, CONFIG_SYS_MAXARGS, 1, do_efi_show_drivers,
1225                          "", ""),
1226         U_BOOT_CMD_MKENT(dh, CONFIG_SYS_MAXARGS, 1, do_efi_show_handles,
1227                          "", ""),
1228         U_BOOT_CMD_MKENT(images, CONFIG_SYS_MAXARGS, 1, do_efi_show_images,
1229                          "", ""),
1230         U_BOOT_CMD_MKENT(memmap, CONFIG_SYS_MAXARGS, 1, do_efi_show_memmap,
1231                          "", ""),
1232         U_BOOT_CMD_MKENT(tables, CONFIG_SYS_MAXARGS, 1, do_efi_show_tables,
1233                          "", ""),
1234         U_BOOT_CMD_MKENT(test, CONFIG_SYS_MAXARGS, 1, do_efi_test,
1235                          "", ""),
1236         U_BOOT_CMD_MKENT(query, CONFIG_SYS_MAXARGS, 1, do_efi_query_info,
1237                          "", ""),
1238 };
1239
1240 /**
1241  * do_efidebug() - display and configure UEFI environment
1242  *
1243  * @cmdtp:      Command table
1244  * @flag:       Command flag
1245  * @argc:       Number of arguments
1246  * @argv:       Argument array
1247  * Return:      CMD_RET_SUCCESS on success,
1248  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1249  *
1250  * Implement efidebug command which allows us to display and
1251  * configure UEFI environment.
1252  */
1253 static int do_efidebug(struct cmd_tbl *cmdtp, int flag,
1254                        int argc, char *const argv[])
1255 {
1256         struct cmd_tbl *cp;
1257         efi_status_t r;
1258
1259         if (argc < 2)
1260                 return CMD_RET_USAGE;
1261
1262         argc--; argv++;
1263
1264         /* Initialize UEFI drivers */
1265         r = efi_init_obj_list();
1266         if (r != EFI_SUCCESS) {
1267                 printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
1268                        r & ~EFI_ERROR_MASK);
1269                 return CMD_RET_FAILURE;
1270         }
1271
1272         cp = find_cmd_tbl(argv[0], cmd_efidebug_sub,
1273                           ARRAY_SIZE(cmd_efidebug_sub));
1274         if (!cp)
1275                 return CMD_RET_USAGE;
1276
1277         return cp->cmd(cmdtp, flag, argc, argv);
1278 }
1279
1280 #ifdef CONFIG_SYS_LONGHELP
1281 static char efidebug_help_text[] =
1282         "  - UEFI Shell-like interface to configure UEFI environment\n"
1283         "\n"
1284         "efidebug boot add <bootid> <label> <interface> <devnum>[:<part>] <file path> [<load options>]\n"
1285         "  - set UEFI BootXXXX variable\n"
1286         "    <load options> will be passed to UEFI application\n"
1287         "efidebug boot rm <bootid#1> [<bootid#2> [<bootid#3> [...]]]\n"
1288         "  - delete UEFI BootXXXX variables\n"
1289         "efidebug boot dump\n"
1290         "  - dump all UEFI BootXXXX variables\n"
1291         "efidebug boot next <bootid>\n"
1292         "  - set UEFI BootNext variable\n"
1293         "efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n"
1294         "  - set/show UEFI boot order\n"
1295         "\n"
1296         "efidebug devices\n"
1297         "  - show UEFI devices\n"
1298         "efidebug drivers\n"
1299         "  - show UEFI drivers\n"
1300         "efidebug dh\n"
1301         "  - show UEFI handles\n"
1302         "efidebug images\n"
1303         "  - show loaded images\n"
1304         "efidebug memmap\n"
1305         "  - show UEFI memory map\n"
1306         "efidebug tables\n"
1307         "  - show UEFI configuration tables\n"
1308         "efidebug test bootmgr\n"
1309         "  - run simple bootmgr for test\n"
1310         "efidebug query [-nv][-bs][-rt][-at]\n"
1311         "  - show size of UEFI variables store\n";
1312 #endif
1313
1314 U_BOOT_CMD(
1315         efidebug, 10, 0, do_efidebug,
1316         "Configure UEFI environment",
1317         efidebug_help_text
1318 );