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 <log.h>
  15 #include <malloc.h>
  16 #include <mapmem.h>
  17 #include <search.h>
  18 #include <linux/ctype.h>
  19
  20 #define BS systab.boottime
  21
  22 /**
  23  * efi_get_device_handle_info() - get information of UEFI device
  24  *
  25  * @handle:             Handle of UEFI device
  26  * @dev_path_text:      Pointer to text of device path
  27  * Return:              0 on success, -1 on failure
  28  *
  29  * Currently return a formatted text of device path.
  30  */
  31 static int efi_get_device_handle_info(efi_handle_t handle, u16 **dev_path_text)
  32 {
  33         struct efi_device_path *dp;
  34         efi_status_t ret;
  35
  36         ret = EFI_CALL(BS->open_protocol(handle, &efi_guid_device_path,
  37                                          (void **)&dp, NULL /* FIXME */, NULL,
  38                                          EFI_OPEN_PROTOCOL_GET_PROTOCOL));
  39         if (ret == EFI_SUCCESS) {
  40                 *dev_path_text = efi_dp_str(dp);
  41                 return 0;
  42         } else {
  43                 return -1;
  44         }
  45 }
  46
  47 #define EFI_HANDLE_WIDTH ((int)sizeof(efi_handle_t) * 2)
  48
  49 static const char spc[] = "                ";
  50 static const char sep[] = "================";
  51
  52 /**
  53  * do_efi_show_devices() - show UEFI devices
  54  *
  55  * @cmdtp:      Command table
  56  * @flag:       Command flag
  57  * @argc:       Number of arguments
  58  * @argv:       Argument array
  59  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
  60  *
  61  * Implement efidebug "devices" sub-command.
  62  * Show all UEFI devices and their information.
  63  */
  64 static int do_efi_show_devices(struct cmd_tbl *cmdtp, int flag,
  65                                int argc, char *const argv[])
  66 {
  67         efi_handle_t *handles;
  68         efi_uintn_t num, i;
  69         u16 *dev_path_text;
  70         efi_status_t ret;
  71
  72         ret = EFI_CALL(efi_locate_handle_buffer(ALL_HANDLES, NULL, NULL,
  73                                                 &num, &handles));
  74         if (ret != EFI_SUCCESS)
  75                 return CMD_RET_FAILURE;
  76
  77         if (!num)
  78                 return CMD_RET_SUCCESS;
  79
  80         printf("Device%.*s Device Path\n", EFI_HANDLE_WIDTH - 6, spc);
  81         printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep);
  82         for (i = 0; i < num; i++) {
  83                 if (!efi_get_device_handle_info(handles[i], &dev_path_text)) {
  84                         printf("%p %ls\n", handles[i], dev_path_text);
  85                         efi_free_pool(dev_path_text);
  86                 }
  87         }
  88
  89         efi_free_pool(handles);
  90
  91         return CMD_RET_SUCCESS;
  92 }
  93
  94 /**
  95  * efi_get_driver_handle_info() - get information of UEFI driver
  96  *
  97  * @handle:             Handle of UEFI device
  98  * @driver_name:        Driver name
  99  * @image_path:         Pointer to text of device path
 100  * Return:              0 on success, -1 on failure
 101  *
 102  * Currently return no useful information as all UEFI drivers are
 103  * built-in..
 104  */
 105 static int efi_get_driver_handle_info(efi_handle_t handle, u16 **driver_name,
 106                                       u16 **image_path)
 107 {
 108         struct efi_handler *handler;
 109         struct efi_loaded_image *image;
 110         efi_status_t ret;
 111
 112         /*
 113          * driver name
 114          * TODO: support EFI_COMPONENT_NAME2_PROTOCOL
 115          */
 116         *driver_name = NULL;
 117
 118         /* image name */
 119         ret = efi_search_protocol(handle, &efi_guid_loaded_image, &handler);
 120         if (ret != EFI_SUCCESS) {
 121                 *image_path = NULL;
 122                 return 0;
 123         }
 124
 125         image = handler->protocol_interface;
 126         *image_path = efi_dp_str(image->file_path);
 127
 128         return 0;
 129 }
 130
 131 /**
 132  * do_efi_show_drivers() - show UEFI drivers
 133  *
 134  * @cmdtp:      Command table
 135  * @flag:       Command flag
 136  * @argc:       Number of arguments
 137  * @argv:       Argument array
 138  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 139  *
 140  * Implement efidebug "drivers" sub-command.
 141  * Show all UEFI drivers and their information.
 142  */
 143 static int do_efi_show_drivers(struct cmd_tbl *cmdtp, int flag,
 144                                int argc, char *const argv[])
 145 {
 146         efi_handle_t *handles;
 147         efi_uintn_t num, i;
 148         u16 *driver_name, *image_path_text;
 149         efi_status_t ret;
 150
 151         ret = EFI_CALL(efi_locate_handle_buffer(
 152                                 BY_PROTOCOL, &efi_guid_driver_binding_protocol,
 153                                 NULL, &num, &handles));
 154         if (ret != EFI_SUCCESS)
 155                 return CMD_RET_FAILURE;
 156
 157         if (!num)
 158                 return CMD_RET_SUCCESS;
 159
 160         printf("Driver%.*s Name                 Image Path\n",
 161                EFI_HANDLE_WIDTH - 6, spc);
 162         printf("%.*s ==================== ====================\n",
 163                EFI_HANDLE_WIDTH, sep);
 164         for (i = 0; i < num; i++) {
 165                 if (!efi_get_driver_handle_info(handles[i], &driver_name,
 166                                                 &image_path_text)) {
 167                         if (image_path_text)
 168                                 printf("%p %-20ls %ls\n", handles[i],
 169                                        driver_name, image_path_text);
 170                         else
 171                                 printf("%p %-20ls <built-in>\n",
 172                                        handles[i], driver_name);
 173                         efi_free_pool(driver_name);
 174                         efi_free_pool(image_path_text);
 175                 }
 176         }
 177
 178         efi_free_pool(handles);
 179
 180         return CMD_RET_SUCCESS;
 181 }
 182
 183 static const struct {
 184         const char *text;
 185         const efi_guid_t guid;
 186 } guid_list[] = {
 187         {
 188                 "Device Path",
 189                 EFI_DEVICE_PATH_PROTOCOL_GUID,
 190         },
 191         {
 192                 "Device Path To Text",
 193                 EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID,
 194         },
 195         {
 196                 "Device Path Utilities",
 197                 EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID,
 198         },
 199         {
 200                 "Unicode Collation 2",
 201                 EFI_UNICODE_COLLATION_PROTOCOL2_GUID,
 202         },
 203         {
 204                 "Driver Binding",
 205                 EFI_DRIVER_BINDING_PROTOCOL_GUID,
 206         },
 207         {
 208                 "Simple Text Input",
 209                 EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID,
 210         },
 211         {
 212                 "Simple Text Input Ex",
 213                 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID,
 214         },
 215         {
 216                 "Simple Text Output",
 217                 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID,
 218         },
 219         {
 220                 "Block IO",
 221                 EFI_BLOCK_IO_PROTOCOL_GUID,
 222         },
 223         {
 224                 "Simple File System",
 225                 EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID,
 226         },
 227         {
 228                 "Loaded Image",
 229                 EFI_LOADED_IMAGE_PROTOCOL_GUID,
 230         },
 231         {
 232                 "Graphics Output",
 233                 EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID,
 234         },
 235         {
 236                 "HII String",
 237                 EFI_HII_STRING_PROTOCOL_GUID,
 238         },
 239         {
 240                 "HII Database",
 241                 EFI_HII_DATABASE_PROTOCOL_GUID,
 242         },
 243         {
 244                 "HII Config Routing",
 245                 EFI_HII_CONFIG_ROUTING_PROTOCOL_GUID,
 246         },
 247         {
 248                 "Load File2",
 249                 EFI_LOAD_FILE2_PROTOCOL_GUID,
 250         },
 251         {
 252                 "Simple Network",
 253                 EFI_SIMPLE_NETWORK_PROTOCOL_GUID,
 254         },
 255         {
 256                 "PXE Base Code",
 257                 EFI_PXE_BASE_CODE_PROTOCOL_GUID,
 258         },
 259         /* Configuration table GUIDs */
 260         {
 261                 "ACPI table",
 262                 EFI_ACPI_TABLE_GUID,
 263         },
 264         {
 265                 "device tree",
 266                 EFI_FDT_GUID,
 267         },
 268         {
 269                 "SMBIOS table",
 270                 SMBIOS_TABLE_GUID,
 271         },
 272         {
 273                 "Runtime properties",
 274                 EFI_RT_PROPERTIES_TABLE_GUID,
 275         },
 276 };
 277
 278 /**
 279  * get_guid_text - get string of GUID
 280  *
 281  * Return description of GUID.
 282  *
 283  * @guid:       GUID
 284  * Return:      description of GUID or NULL
 285  */
 286 static const char *get_guid_text(const void *guid)
 287 {
 288         int i;
 289
 290         for (i = 0; i < ARRAY_SIZE(guid_list); i++) {
 291                 /*
 292                  * As guidcmp uses memcmp() we can safely accept unaligned
 293                  * GUIDs.
 294                  */
 295                 if (!guidcmp(&guid_list[i].guid, guid))
 296                         return guid_list[i].text;
 297         }
 298
 299         return NULL;
 300 }
 301
 302 /**
 303  * do_efi_show_handles() - show UEFI handles
 304  *
 305  * @cmdtp:      Command table
 306  * @flag:       Command flag
 307  * @argc:       Number of arguments
 308  * @argv:       Argument array
 309  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 310  *
 311  * Implement efidebug "dh" sub-command.
 312  * Show all UEFI handles and their information, currently all protocols
 313  * added to handle.
 314  */
 315 static int do_efi_show_handles(struct cmd_tbl *cmdtp, int flag,
 316                                int argc, char *const argv[])
 317 {
 318         efi_handle_t *handles;
 319         efi_guid_t **guid;
 320         efi_uintn_t num, count, i, j;
 321         const char *guid_text;
 322         efi_status_t ret;
 323
 324         ret = EFI_CALL(efi_locate_handle_buffer(ALL_HANDLES, NULL, NULL,
 325                                                 &num, &handles));
 326         if (ret != EFI_SUCCESS)
 327                 return CMD_RET_FAILURE;
 328
 329         if (!num)
 330                 return CMD_RET_SUCCESS;
 331
 332         printf("Handle%.*s Protocols\n", EFI_HANDLE_WIDTH - 6, spc);
 333         printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep);
 334         for (i = 0; i < num; i++) {
 335                 printf("%p", handles[i]);
 336                 ret = EFI_CALL(BS->protocols_per_handle(handles[i], &guid,
 337                                                         &count));
 338                 if (ret || !count) {
 339                         putc('\n');
 340                         continue;
 341                 }
 342
 343                 for (j = 0; j < count; j++) {
 344                         if (j)
 345                                 printf(", ");
 346                         else
 347                                 putc(' ');
 348
 349                         guid_text = get_guid_text(guid[j]);
 350                         if (guid_text)
 351                                 puts(guid_text);
 352                         else
 353                                 printf("%pUl", guid[j]);
 354                 }
 355                 putc('\n');
 356         }
 357
 358         efi_free_pool(handles);
 359
 360         return CMD_RET_SUCCESS;
 361 }
 362
 363 /**
 364  * do_efi_show_images() - show UEFI images
 365  *
 366  * @cmdtp:      Command table
 367  * @flag:       Command flag
 368  * @argc:       Number of arguments
 369  * @argv:       Argument array
 370  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 371  *
 372  * Implement efidebug "images" sub-command.
 373  * Show all UEFI loaded images and their information.
 374  */
 375 static int do_efi_show_images(struct cmd_tbl *cmdtp, int flag,
 376                               int argc, char *const argv[])
 377 {
 378         efi_print_image_infos(NULL);
 379
 380         return CMD_RET_SUCCESS;
 381 }
 382
 383 static const char * const efi_mem_type_string[] = {
 384         [EFI_RESERVED_MEMORY_TYPE] = "RESERVED",
 385         [EFI_LOADER_CODE] = "LOADER CODE",
 386         [EFI_LOADER_DATA] = "LOADER DATA",
 387         [EFI_BOOT_SERVICES_CODE] = "BOOT CODE",
 388         [EFI_BOOT_SERVICES_DATA] = "BOOT DATA",
 389         [EFI_RUNTIME_SERVICES_CODE] = "RUNTIME CODE",
 390         [EFI_RUNTIME_SERVICES_DATA] = "RUNTIME DATA",
 391         [EFI_CONVENTIONAL_MEMORY] = "CONVENTIONAL",
 392         [EFI_UNUSABLE_MEMORY] = "UNUSABLE MEM",
 393         [EFI_ACPI_RECLAIM_MEMORY] = "ACPI RECLAIM MEM",
 394         [EFI_ACPI_MEMORY_NVS] = "ACPI NVS",
 395         [EFI_MMAP_IO] = "IO",
 396         [EFI_MMAP_IO_PORT] = "IO PORT",
 397         [EFI_PAL_CODE] = "PAL",
 398         [EFI_PERSISTENT_MEMORY_TYPE] = "PERSISTENT",
 399 };
 400
 401 static const struct efi_mem_attrs {
 402         const u64 bit;
 403         const char *text;
 404 } efi_mem_attrs[] = {
 405         {EFI_MEMORY_UC, "UC"},
 406         {EFI_MEMORY_UC, "UC"},
 407         {EFI_MEMORY_WC, "WC"},
 408         {EFI_MEMORY_WT, "WT"},
 409         {EFI_MEMORY_WB, "WB"},
 410         {EFI_MEMORY_UCE, "UCE"},
 411         {EFI_MEMORY_WP, "WP"},
 412         {EFI_MEMORY_RP, "RP"},
 413         {EFI_MEMORY_XP, "WP"},
 414         {EFI_MEMORY_NV, "NV"},
 415         {EFI_MEMORY_MORE_RELIABLE, "REL"},
 416         {EFI_MEMORY_RO, "RO"},
 417         {EFI_MEMORY_SP, "SP"},
 418         {EFI_MEMORY_RUNTIME, "RT"},
 419 };
 420
 421 /**
 422  * print_memory_attributes() - print memory map attributes
 423  *
 424  * @attributes: Attribute value
 425  *
 426  * Print memory map attributes
 427  */
 428 static void print_memory_attributes(u64 attributes)
 429 {
 430         int sep, i;
 431
 432         for (sep = 0, i = 0; i < ARRAY_SIZE(efi_mem_attrs); i++)
 433                 if (attributes & efi_mem_attrs[i].bit) {
 434                         if (sep) {
 435                                 putc('|');
 436                         } else {
 437                                 putc(' ');
 438                                 sep = 1;
 439                         }
 440                         puts(efi_mem_attrs[i].text);
 441                 }
 442 }
 443
 444 #define EFI_PHYS_ADDR_WIDTH (int)(sizeof(efi_physical_addr_t) * 2)
 445
 446 /**
 447  * do_efi_show_memmap() - show UEFI memory map
 448  *
 449  * @cmdtp:      Command table
 450  * @flag:       Command flag
 451  * @argc:       Number of arguments
 452  * @argv:       Argument array
 453  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 454  *
 455  * Implement efidebug "memmap" sub-command.
 456  * Show UEFI memory map.
 457  */
 458 static int do_efi_show_memmap(struct cmd_tbl *cmdtp, int flag,
 459                               int argc, char *const argv[])
 460 {
 461         struct efi_mem_desc *memmap = NULL, *map;
 462         efi_uintn_t map_size = 0;
 463         const char *type;
 464         int i;
 465         efi_status_t ret;
 466
 467         ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL);
 468         if (ret == EFI_BUFFER_TOO_SMALL) {
 469                 map_size += sizeof(struct efi_mem_desc); /* for my own */
 470                 ret = efi_allocate_pool(EFI_LOADER_DATA, map_size,
 471                                         (void *)&memmap);
 472                 if (ret != EFI_SUCCESS)
 473                         return CMD_RET_FAILURE;
 474                 ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL);
 475         }
 476         if (ret != EFI_SUCCESS) {
 477                 efi_free_pool(memmap);
 478                 return CMD_RET_FAILURE;
 479         }
 480
 481         printf("Type             Start%.*s End%.*s Attributes\n",
 482                EFI_PHYS_ADDR_WIDTH - 5, spc, EFI_PHYS_ADDR_WIDTH - 3, spc);
 483         printf("================ %.*s %.*s ==========\n",
 484                EFI_PHYS_ADDR_WIDTH, sep, EFI_PHYS_ADDR_WIDTH, sep);
 485         /*
 486          * Coverity check: dereferencing null pointer "map."
 487          * This is a false positive as memmap will always be
 488          * populated by allocate_pool() above.
 489          */
 490         for (i = 0, map = memmap; i < map_size / sizeof(*map); map++, i++) {
 491                 if (map->type < ARRAY_SIZE(efi_mem_type_string))
 492                         type = efi_mem_type_string[map->type];
 493                 else
 494                         type = "(unknown)";
 495
 496                 printf("%-16s %.*llx-%.*llx", type,
 497                        EFI_PHYS_ADDR_WIDTH,
 498                        (u64)map_to_sysmem((void *)(uintptr_t)
 499                                           map->physical_start),
 500                        EFI_PHYS_ADDR_WIDTH,
 501                        (u64)map_to_sysmem((void *)(uintptr_t)
 502                                           (map->physical_start +
 503                                            map->num_pages * EFI_PAGE_SIZE)));
 504
 505                 print_memory_attributes(map->attribute);
 506                 putc('\n');
 507         }
 508
 509         efi_free_pool(memmap);
 510
 511         return CMD_RET_SUCCESS;
 512 }
 513
 514 /**
 515  * do_efi_show_tables() - show UEFI configuration tables
 516  *
 517  * @cmdtp:      Command table
 518  * @flag:       Command flag
 519  * @argc:       Number of arguments
 520  * @argv:       Argument array
 521  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 522  *
 523  * Implement efidebug "tables" sub-command.
 524  * Show UEFI configuration tables.
 525  */
 526 static int do_efi_show_tables(struct cmd_tbl *cmdtp, int flag,
 527                               int argc, char *const argv[])
 528 {
 529         efi_uintn_t i;
 530         const char *guid_str;
 531
 532         for (i = 0; i < systab.nr_tables; ++i) {
 533                 guid_str = get_guid_text(&systab.tables[i].guid);
 534                 if (!guid_str)
 535                         guid_str = "";
 536                 printf("%pUl %s\n", &systab.tables[i].guid, guid_str);
 537         }
 538
 539         return CMD_RET_SUCCESS;
 540 }
 541
 542 /**
 543  * do_efi_boot_add() - set UEFI load option
 544  *
 545  * @cmdtp:      Command table
 546  * @flag:       Command flag
 547  * @argc:       Number of arguments
 548  * @argv:       Argument array
 549  * Return:      CMD_RET_SUCCESS on success,
 550  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
 551  *
 552  * Implement efidebug "boot add" sub-command. Create or change UEFI load option.
 553  *
 554  *     efidebug boot add <id> <label> <interface> <devnum>[:<part>] <file> <options>
 555  */
 556 static int do_efi_boot_add(struct cmd_tbl *cmdtp, int flag,
 557                            int argc, char *const argv[])
 558 {
 559         int id;
 560         char *endp;
 561         char var_name[9];
 562         u16 var_name16[9], *p;
 563         efi_guid_t guid;
 564         size_t label_len, label_len16;
 565         u16 *label;
 566         struct efi_device_path *device_path = NULL, *file_path = NULL;
 567         struct efi_load_option lo;
 568         void *data = NULL;
 569         efi_uintn_t size;
 570         efi_status_t ret;
 571         int r = CMD_RET_SUCCESS;
 572
 573         if (argc < 6 || argc > 7)
 574                 return CMD_RET_USAGE;
 575
 576         id = (int)simple_strtoul(argv[1], &endp, 16);
 577         if (*endp != '\0' || id > 0xffff)
 578                 return CMD_RET_USAGE;
 579
 580         sprintf(var_name, "Boot%04X", id);
 581         p = var_name16;
 582         utf8_utf16_strncpy(&p, var_name, 9);
 583
 584         guid = efi_global_variable_guid;
 585
 586         /* attributes */
 587         lo.attributes = LOAD_OPTION_ACTIVE; /* always ACTIVE */
 588
 589         /* label */
 590         label_len = strlen(argv[2]);
 591         label_len16 = utf8_utf16_strnlen(argv[2], label_len);
 592         label = malloc((label_len16 + 1) * sizeof(u16));
 593         if (!label)
 594                 return CMD_RET_FAILURE;
 595         lo.label = label; /* label will be changed below */
 596         utf8_utf16_strncpy(&label, argv[2], label_len);
 597
 598         /* file path */
 599         ret = efi_dp_from_name(argv[3], argv[4], argv[5], &device_path,
 600                                &file_path);
 601         if (ret != EFI_SUCCESS) {
 602                 printf("Cannot create device path for \"%s %s\"\n",
 603                        argv[3], argv[4]);
 604                 r = CMD_RET_FAILURE;
 605                 goto out;
 606         }
 607         lo.file_path = file_path;
 608         lo.file_path_length = efi_dp_size(file_path)
 609                                 + sizeof(struct efi_device_path); /* for END */
 610
 611         /* optional data */
 612         if (argc == 6)
 613                 lo.optional_data = NULL;
 614         else
 615                 lo.optional_data = (const u8 *)argv[6];
 616
 617         size = efi_serialize_load_option(&lo, (u8 **)&data);
 618         if (!size) {
 619                 r = CMD_RET_FAILURE;
 620                 goto out;
 621         }
 622
 623         ret = EFI_CALL(efi_set_variable(var_name16, &guid,
 624                                         EFI_VARIABLE_NON_VOLATILE |
 625                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
 626                                         EFI_VARIABLE_RUNTIME_ACCESS,
 627                                         size, data));
 628         if (ret != EFI_SUCCESS) {
 629                 printf("Cannot set %ls\n", var_name16);
 630                 r = CMD_RET_FAILURE;
 631         }
 632 out:
 633         free(data);
 634         efi_free_pool(device_path);
 635         efi_free_pool(file_path);
 636         free(lo.label);
 637
 638         return r;
 639 }
 640
 641 /**
 642  * do_efi_boot_rm() - delete UEFI load options
 643  *
 644  * @cmdtp:      Command table
 645  * @flag:       Command flag
 646  * @argc:       Number of arguments
 647  * @argv:       Argument array
 648  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 649  *
 650  * Implement efidebug "boot rm" sub-command.
 651  * Delete UEFI load options.
 652  *
 653  *     efidebug boot rm <id> ...
 654  */
 655 static int do_efi_boot_rm(struct cmd_tbl *cmdtp, int flag,
 656                           int argc, char *const argv[])
 657 {
 658         efi_guid_t guid;
 659         int id, i;
 660         char *endp;
 661         char var_name[9];
 662         u16 var_name16[9], *p;
 663         efi_status_t ret;
 664
 665         if (argc == 1)
 666                 return CMD_RET_USAGE;
 667
 668         guid = efi_global_variable_guid;
 669         for (i = 1; i < argc; i++, argv++) {
 670                 id = (int)simple_strtoul(argv[1], &endp, 16);
 671                 if (*endp != '\0' || id > 0xffff)
 672                         return CMD_RET_FAILURE;
 673
 674                 sprintf(var_name, "Boot%04X", id);
 675                 p = var_name16;
 676                 utf8_utf16_strncpy(&p, var_name, 9);
 677
 678                 ret = EFI_CALL(efi_set_variable(var_name16, &guid, 0, 0, NULL));
 679                 if (ret) {
 680                         printf("Cannot remove %ls\n", var_name16);
 681                         return CMD_RET_FAILURE;
 682                 }
 683         }
 684
 685         return CMD_RET_SUCCESS;
 686 }
 687
 688 /**
 689  * show_efi_boot_opt_data() - dump UEFI load option
 690  *
 691  * @varname16:  variable name
 692  * @data:       value of UEFI load option variable
 693  * @size:       size of the boot option
 694  *
 695  * Decode the value of UEFI load option variable and print information.
 696  */
 697 static void show_efi_boot_opt_data(u16 *varname16, void *data, size_t size)
 698 {
 699         struct efi_load_option lo;
 700         char *label, *p;
 701         size_t label_len16, label_len;
 702         u16 *dp_str;
 703
 704         efi_deserialize_load_option(&lo, data);
 705
 706         label_len16 = u16_strlen(lo.label);
 707         label_len = utf16_utf8_strnlen(lo.label, label_len16);
 708         label = malloc(label_len + 1);
 709         if (!label)
 710                 return;
 711         p = label;
 712         utf16_utf8_strncpy(&p, lo.label, label_len16);
 713
 714         printf("%ls:\nattributes: %c%c%c (0x%08x)\n",
 715                varname16,
 716                /* ACTIVE */
 717                lo.attributes & LOAD_OPTION_ACTIVE ? 'A' : '-',
 718                /* FORCE RECONNECT */
 719                lo.attributes & LOAD_OPTION_FORCE_RECONNECT ? 'R' : '-',
 720                /* HIDDEN */
 721                lo.attributes & LOAD_OPTION_HIDDEN ? 'H' : '-',
 722                lo.attributes);
 723         printf("  label: %s\n", label);
 724
 725         dp_str = efi_dp_str(lo.file_path);
 726         printf("  file_path: %ls\n", dp_str);
 727         efi_free_pool(dp_str);
 728
 729         printf("  data:\n");
 730         print_hex_dump("    ", DUMP_PREFIX_OFFSET, 16, 1,
 731                        lo.optional_data, size + (u8 *)data -
 732                        (u8 *)lo.optional_data, true);
 733         free(label);
 734 }
 735
 736 /**
 737  * show_efi_boot_opt() - dump UEFI load option
 738  *
 739  * @varname16:  variable name
 740  *
 741  * Dump information defined by UEFI load option.
 742  */
 743 static void show_efi_boot_opt(u16 *varname16)
 744 {
 745         void *data;
 746         efi_uintn_t size;
 747         efi_status_t ret;
 748
 749         size = 0;
 750         ret = EFI_CALL(efi_get_variable(varname16, &efi_global_variable_guid,
 751                                         NULL, &size, NULL));
 752         if (ret == EFI_BUFFER_TOO_SMALL) {
 753                 data = malloc(size);
 754                 if (!data) {
 755                         printf("ERROR: Out of memory\n");
 756                         return;
 757                 }
 758                 ret = EFI_CALL(efi_get_variable(varname16,
 759                                                 &efi_global_variable_guid,
 760                                                 NULL, &size, data));
 761                 if (ret == EFI_SUCCESS)
 762                         show_efi_boot_opt_data(varname16, data, size);
 763                 free(data);
 764         }
 765 }
 766
 767 static int u16_tohex(u16 c)
 768 {
 769         if (c >= '0' && c <= '9')
 770                 return c - '0';
 771         if (c >= 'A' && c <= 'F')
 772                 return c - 'A' + 10;
 773
 774         /* not hexadecimal */
 775         return -1;
 776 }
 777
 778 /**
 779  * show_efi_boot_dump() - dump all UEFI load options
 780  *
 781  * @cmdtp:      Command table
 782  * @flag:       Command flag
 783  * @argc:       Number of arguments
 784  * @argv:       Argument array
 785  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 786  *
 787  * Implement efidebug "boot dump" sub-command.
 788  * Dump information of all UEFI load options defined.
 789  *
 790  *     efidebug boot dump
 791  */
 792 static int do_efi_boot_dump(struct cmd_tbl *cmdtp, int flag,
 793                             int argc, char *const argv[])
 794 {
 795         u16 *var_name16, *p;
 796         efi_uintn_t buf_size, size;
 797         efi_guid_t guid;
 798         int id, i, digit;
 799         efi_status_t ret;
 800
 801         if (argc > 1)
 802                 return CMD_RET_USAGE;
 803
 804         buf_size = 128;
 805         var_name16 = malloc(buf_size);
 806         if (!var_name16)
 807                 return CMD_RET_FAILURE;
 808
 809         var_name16[0] = 0;
 810         for (;;) {
 811                 size = buf_size;
 812                 ret = EFI_CALL(efi_get_next_variable_name(&size, var_name16,
 813                                                           &guid));
 814                 if (ret == EFI_NOT_FOUND)
 815                         break;
 816                 if (ret == EFI_BUFFER_TOO_SMALL) {
 817                         buf_size = size;
 818                         p = realloc(var_name16, buf_size);
 819                         if (!p) {
 820                                 free(var_name16);
 821                                 return CMD_RET_FAILURE;
 822                         }
 823                         var_name16 = p;
 824                         ret = EFI_CALL(efi_get_next_variable_name(&size,
 825                                                                   var_name16,
 826                                                                   &guid));
 827                 }
 828                 if (ret != EFI_SUCCESS) {
 829                         free(var_name16);
 830                         return CMD_RET_FAILURE;
 831                 }
 832
 833                 if (memcmp(var_name16, L"Boot", 8))
 834                         continue;
 835
 836                 for (id = 0, i = 0; i < 4; i++) {
 837                         digit = u16_tohex(var_name16[4 + i]);
 838                         if (digit < 0)
 839                                 break;
 840                         id = (id << 4) + digit;
 841                 }
 842                 if (i == 4 && !var_name16[8])
 843                         show_efi_boot_opt(var_name16);
 844         }
 845
 846         free(var_name16);
 847
 848         return CMD_RET_SUCCESS;
 849 }
 850
 851 /**
 852  * show_efi_boot_order() - show order of UEFI load options
 853  *
 854  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 855  *
 856  * Show order of UEFI load options defined by BootOrder variable.
 857  */
 858 static int show_efi_boot_order(void)
 859 {
 860         u16 *bootorder;
 861         efi_uintn_t size;
 862         int num, i;
 863         char var_name[9];
 864         u16 var_name16[9], *p16;
 865         void *data;
 866         struct efi_load_option lo;
 867         char *label, *p;
 868         size_t label_len16, label_len;
 869         efi_status_t ret;
 870
 871         size = 0;
 872         ret = EFI_CALL(efi_get_variable(L"BootOrder", &efi_global_variable_guid,
 873                                         NULL, &size, NULL));
 874         if (ret != EFI_BUFFER_TOO_SMALL) {
 875                 if (ret == EFI_NOT_FOUND) {
 876                         printf("BootOrder not defined\n");
 877                         return CMD_RET_SUCCESS;
 878                 } else {
 879                         return CMD_RET_FAILURE;
 880                 }
 881         }
 882         bootorder = malloc(size);
 883         if (!bootorder) {
 884                 printf("ERROR: Out of memory\n");
 885                 return CMD_RET_FAILURE;
 886         }
 887         ret = EFI_CALL(efi_get_variable(L"BootOrder", &efi_global_variable_guid,
 888                                         NULL, &size, bootorder));
 889         if (ret != EFI_SUCCESS) {
 890                 ret = CMD_RET_FAILURE;
 891                 goto out;
 892         }
 893
 894         num = size / sizeof(u16);
 895         for (i = 0; i < num; i++) {
 896                 sprintf(var_name, "Boot%04X", bootorder[i]);
 897                 p16 = var_name16;
 898                 utf8_utf16_strncpy(&p16, var_name, 9);
 899
 900                 size = 0;
 901                 ret = EFI_CALL(efi_get_variable(var_name16,
 902                                                 &efi_global_variable_guid, NULL,
 903                                                 &size, NULL));
 904                 if (ret != EFI_BUFFER_TOO_SMALL) {
 905                         printf("%2d: %s: (not defined)\n", i + 1, var_name);
 906                         continue;
 907                 }
 908
 909                 data = malloc(size);
 910                 if (!data) {
 911                         ret = CMD_RET_FAILURE;
 912                         goto out;
 913                 }
 914                 ret = EFI_CALL(efi_get_variable(var_name16,
 915                                                 &efi_global_variable_guid, NULL,
 916                                                 &size, data));
 917                 if (ret != EFI_SUCCESS) {
 918                         free(data);
 919                         ret = CMD_RET_FAILURE;
 920                         goto out;
 921                 }
 922
 923                 efi_deserialize_load_option(&lo, data);
 924
 925                 label_len16 = u16_strlen(lo.label);
 926                 label_len = utf16_utf8_strnlen(lo.label, label_len16);
 927                 label = malloc(label_len + 1);
 928                 if (!label) {
 929                         free(data);
 930                         ret = CMD_RET_FAILURE;
 931                         goto out;
 932                 }
 933                 p = label;
 934                 utf16_utf8_strncpy(&p, lo.label, label_len16);
 935                 printf("%2d: %s: %s\n", i + 1, var_name, label);
 936                 free(label);
 937
 938                 free(data);
 939         }
 940 out:
 941         free(bootorder);
 942
 943         return ret;
 944 }
 945
 946 /**
 947  * do_efi_boot_next() - manage UEFI BootNext variable
 948  *
 949  * @cmdtp:      Command table
 950  * @flag:       Command flag
 951  * @argc:       Number of arguments
 952  * @argv:       Argument array
 953  * Return:      CMD_RET_SUCCESS on success,
 954  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
 955  *
 956  * Implement efidebug "boot next" sub-command.
 957  * Set BootNext variable.
 958  *
 959  *     efidebug boot next <id>
 960  */
 961 static int do_efi_boot_next(struct cmd_tbl *cmdtp, int flag,
 962                             int argc, char *const argv[])
 963 {
 964         u16 bootnext;
 965         efi_uintn_t size;
 966         char *endp;
 967         efi_guid_t guid;
 968         efi_status_t ret;
 969         int r = CMD_RET_SUCCESS;
 970
 971         if (argc != 2)
 972                 return CMD_RET_USAGE;
 973
 974         bootnext = (u16)simple_strtoul(argv[1], &endp, 16);
 975         if (*endp) {
 976                 printf("invalid value: %s\n", argv[1]);
 977                 r = CMD_RET_FAILURE;
 978                 goto out;
 979         }
 980
 981         guid = efi_global_variable_guid;
 982         size = sizeof(u16);
 983         ret = EFI_CALL(efi_set_variable(L"BootNext", &guid,
 984                                         EFI_VARIABLE_NON_VOLATILE |
 985                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
 986                                         EFI_VARIABLE_RUNTIME_ACCESS,
 987                                         size, &bootnext));
 988         if (ret != EFI_SUCCESS) {
 989                 printf("Cannot set BootNext\n");
 990                 r = CMD_RET_FAILURE;
 991         }
 992 out:
 993         return r;
 994 }
 995
 996 /**
 997  * do_efi_boot_order() - manage UEFI BootOrder variable
 998  *
 999  * @cmdtp:      Command table
1000  * @flag:       Command flag
1001  * @argc:       Number of arguments
1002  * @argv:       Argument array
1003  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
1004  *
1005  * Implement efidebug "boot order" sub-command.
1006  * Show order of UEFI load options, or change it in BootOrder variable.
1007  *
1008  *     efidebug boot order [<id> ...]
1009  */
1010 static int do_efi_boot_order(struct cmd_tbl *cmdtp, int flag,
1011                              int argc, char *const argv[])
1012 {
1013         u16 *bootorder = NULL;
1014         efi_uintn_t size;
1015         int id, i;
1016         char *endp;
1017         efi_guid_t guid;
1018         efi_status_t ret;
1019         int r = CMD_RET_SUCCESS;
1020
1021         if (argc == 1)
1022                 return show_efi_boot_order();
1023
1024         argc--;
1025         argv++;
1026
1027         size = argc * sizeof(u16);
1028         bootorder = malloc(size);
1029         if (!bootorder)
1030                 return CMD_RET_FAILURE;
1031
1032         for (i = 0; i < argc; i++) {
1033                 id = (int)simple_strtoul(argv[i], &endp, 16);
1034                 if (*endp != '\0' || id > 0xffff) {
1035                         printf("invalid value: %s\n", argv[i]);
1036                         r = CMD_RET_FAILURE;
1037                         goto out;
1038                 }
1039
1040                 bootorder[i] = (u16)id;
1041         }
1042
1043         guid = efi_global_variable_guid;
1044         ret = EFI_CALL(efi_set_variable(L"BootOrder", &guid,
1045                                         EFI_VARIABLE_NON_VOLATILE |
1046                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
1047                                         EFI_VARIABLE_RUNTIME_ACCESS,
1048                                         size, bootorder));
1049         if (ret != EFI_SUCCESS) {
1050                 printf("Cannot set BootOrder\n");
1051                 r = CMD_RET_FAILURE;
1052         }
1053 out:
1054         free(bootorder);
1055
1056         return r;
1057 }
1058
1059 static struct cmd_tbl cmd_efidebug_boot_sub[] = {
1060         U_BOOT_CMD_MKENT(add, CONFIG_SYS_MAXARGS, 1, do_efi_boot_add, "", ""),
1061         U_BOOT_CMD_MKENT(rm, CONFIG_SYS_MAXARGS, 1, do_efi_boot_rm, "", ""),
1062         U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_efi_boot_dump, "", ""),
1063         U_BOOT_CMD_MKENT(next, CONFIG_SYS_MAXARGS, 1, do_efi_boot_next, "", ""),
1064         U_BOOT_CMD_MKENT(order, CONFIG_SYS_MAXARGS, 1, do_efi_boot_order,
1065                          "", ""),
1066 };
1067
1068 /**
1069  * do_efi_boot_opt() - manage UEFI load options
1070  *
1071  * @cmdtp:      Command table
1072  * @flag:       Command flag
1073  * @argc:       Number of arguments
1074  * @argv:       Argument array
1075  * Return:      CMD_RET_SUCCESS on success,
1076  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1077  *
1078  * Implement efidebug "boot" sub-command.
1079  */
1080 static int do_efi_boot_opt(struct cmd_tbl *cmdtp, int flag,
1081                            int argc, char *const argv[])
1082 {
1083         struct cmd_tbl *cp;
1084
1085         if (argc < 2)
1086                 return CMD_RET_USAGE;
1087
1088         argc--; argv++;
1089
1090         cp = find_cmd_tbl(argv[0], cmd_efidebug_boot_sub,
1091                           ARRAY_SIZE(cmd_efidebug_boot_sub));
1092         if (!cp)
1093                 return CMD_RET_USAGE;
1094
1095         return cp->cmd(cmdtp, flag, argc, argv);
1096 }
1097
1098 /**
1099  * do_efi_test_bootmgr() - run simple bootmgr for test
1100  *
1101  * @cmdtp:      Command table
1102  * @flag:       Command flag
1103  * @argc:       Number of arguments
1104  * @argv:       Argument array
1105  * Return:      CMD_RET_SUCCESS on success,
1106  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1107  *
1108  * Implement efidebug "test bootmgr" sub-command.
1109  * Run simple bootmgr for test.
1110  *
1111  *     efidebug test bootmgr
1112  */
1113 static int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag,
1114                                int argc, char * const argv[])
1115 {
1116         efi_handle_t image;
1117         efi_uintn_t exit_data_size = 0;
1118         u16 *exit_data = NULL;
1119         efi_status_t ret;
1120
1121         ret = efi_bootmgr_load(&image);
1122         printf("efi_bootmgr_load() returned: %ld\n", ret & ~EFI_ERROR_MASK);
1123
1124         /* We call efi_start_image() even if error for test purpose. */
1125         ret = EFI_CALL(efi_start_image(image, &exit_data_size, &exit_data));
1126         printf("efi_start_image() returned: %ld\n", ret & ~EFI_ERROR_MASK);
1127         if (ret && exit_data)
1128                 efi_free_pool(exit_data);
1129
1130         efi_restore_gd();
1131
1132         return CMD_RET_SUCCESS;
1133 }
1134
1135 static struct cmd_tbl cmd_efidebug_test_sub[] = {
1136         U_BOOT_CMD_MKENT(bootmgr, CONFIG_SYS_MAXARGS, 1, do_efi_test_bootmgr,
1137                          "", ""),
1138 };
1139
1140 /**
1141  * do_efi_test() - manage UEFI load options
1142  *
1143  * @cmdtp:      Command table
1144  * @flag:       Command flag
1145  * @argc:       Number of arguments
1146  * @argv:       Argument array
1147  * Return:      CMD_RET_SUCCESS on success,
1148  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1149  *
1150  * Implement efidebug "test" sub-command.
1151  */
1152 static int do_efi_test(struct cmd_tbl *cmdtp, int flag,
1153                        int argc, char * const argv[])
1154 {
1155         struct cmd_tbl *cp;
1156
1157         if (argc < 2)
1158                 return CMD_RET_USAGE;
1159
1160         argc--; argv++;
1161
1162         cp = find_cmd_tbl(argv[0], cmd_efidebug_test_sub,
1163                           ARRAY_SIZE(cmd_efidebug_test_sub));
1164         if (!cp)
1165                 return CMD_RET_USAGE;
1166
1167         return cp->cmd(cmdtp, flag, argc, argv);
1168 }
1169
1170 /**
1171  * do_efi_query_info() - QueryVariableInfo EFI service
1172  *
1173  * @cmdtp:      Command table
1174  * @flag:       Command flag
1175  * @argc:       Number of arguments
1176  * @argv:       Argument array
1177  * Return:      CMD_RET_SUCCESS on success,
1178  *              CMD_RET_USAGE or CMD_RET_FAILURE on failure
1179  *
1180  * Implement efidebug "test" sub-command.
1181  */
1182
1183 static int do_efi_query_info(struct cmd_tbl *cmdtp, int flag,
1184                              int argc, char * const argv[])
1185 {
1186         efi_status_t ret;
1187         u32 attr = 0;
1188         u64 max_variable_storage_size;
1189         u64 remain_variable_storage_size;
1190         u64 max_variable_size;
1191         int i;
1192
1193         for (i = 1; i < argc; i++) {
1194                 if (!strcmp(argv[i], "-bs"))
1195                         attr |= EFI_VARIABLE_BOOTSERVICE_ACCESS;
1196                 else if (!strcmp(argv[i], "-rt"))
1197                         attr |= EFI_VARIABLE_RUNTIME_ACCESS;
1198                 else if (!strcmp(argv[i], "-nv"))
1199                         attr |= EFI_VARIABLE_NON_VOLATILE;
1200                 else if (!strcmp(argv[i], "-at"))
1201                         attr |=
1202                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;
1203         }
1204
1205         ret = EFI_CALL(efi_query_variable_info(attr,
1206                                                &max_variable_storage_size,
1207                                                &remain_variable_storage_size,
1208                                                &max_variable_size));
1209         if (ret != EFI_SUCCESS) {
1210                 printf("Error: Cannot query UEFI variables, r = %lu\n",
1211                        ret & ~EFI_ERROR_MASK);
1212                 return CMD_RET_FAILURE;
1213         }
1214
1215         printf("Max storage size %llu\n", max_variable_storage_size);
1216         printf("Remaining storage size %llu\n", remain_variable_storage_size);
1217         printf("Max variable size %llu\n", max_variable_size);
1218
1219         return CMD_RET_SUCCESS;
1220 }
1221
1222 static struct cmd_tbl cmd_efidebug_sub[] = {
1223         U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""),
1224         U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices,
1225                          "", ""),
1226         U_BOOT_CMD_MKENT(drivers, CONFIG_SYS_MAXARGS, 1, do_efi_show_drivers,
1227                          "", ""),
1228         U_BOOT_CMD_MKENT(dh, CONFIG_SYS_MAXARGS, 1, do_efi_show_handles,
1229                          "", ""),
1230         U_BOOT_CMD_MKENT(images, CONFIG_SYS_MAXARGS, 1, do_efi_show_images,
1231                          "", ""),
1232         U_BOOT_CMD_MKENT(memmap, CONFIG_SYS_MAXARGS, 1, do_efi_show_memmap,
1233                          "", ""),
1234         U_BOOT_CMD_MKENT(tables, CONFIG_SYS_MAXARGS, 1, do_efi_show_tables,
1235                          "", ""),
1236         U_BOOT_CMD_MKENT(test, CONFIG_SYS_MAXARGS, 1, do_efi_test,
1237                          "", ""),
1238         U_BOOT_CMD_MKENT(query, CONFIG_SYS_MAXARGS, 1, do_efi_query_info,
1239                          "", ""),
1240 };
1241
1242 /**
1243  * do_efidebug() - display and configure UEFI environment
1244  *
1245  * @cmdtp:      Command table
1246  * @flag:       Command flag
1247  * @argc:       Number of arguments
1248  * @argv:       Argument array
1249  * Return:      CMD_RET_SUCCESS on success,
1250  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1251  *
1252  * Implement efidebug command which allows us to display and
1253  * configure UEFI environment.
1254  */
1255 static int do_efidebug(struct cmd_tbl *cmdtp, int flag,
1256                        int argc, char *const argv[])
1257 {
1258         struct cmd_tbl *cp;
1259         efi_status_t r;
1260
1261         if (argc < 2)
1262                 return CMD_RET_USAGE;
1263
1264         argc--; argv++;
1265
1266         /* Initialize UEFI drivers */
1267         r = efi_init_obj_list();
1268         if (r != EFI_SUCCESS) {
1269                 printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
1270                        r & ~EFI_ERROR_MASK);
1271                 return CMD_RET_FAILURE;
1272         }
1273
1274         cp = find_cmd_tbl(argv[0], cmd_efidebug_sub,
1275                           ARRAY_SIZE(cmd_efidebug_sub));
1276         if (!cp)
1277                 return CMD_RET_USAGE;
1278
1279         return cp->cmd(cmdtp, flag, argc, argv);
1280 }
1281
1282 #ifdef CONFIG_SYS_LONGHELP
1283 static char efidebug_help_text[] =
1284         "  - UEFI Shell-like interface to configure UEFI environment\n"
1285         "\n"
1286         "efidebug boot add <bootid> <label> <interface> <devnum>[:<part>] <file path> [<load options>]\n"
1287         "  - set UEFI BootXXXX variable\n"
1288         "    <load options> will be passed to UEFI application\n"
1289         "efidebug boot rm <bootid#1> [<bootid#2> [<bootid#3> [...]]]\n"
1290         "  - delete UEFI BootXXXX variables\n"
1291         "efidebug boot dump\n"
1292         "  - dump all UEFI BootXXXX variables\n"
1293         "efidebug boot next <bootid>\n"
1294         "  - set UEFI BootNext variable\n"
1295         "efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n"
1296         "  - set/show UEFI boot order\n"
1297         "\n"
1298         "efidebug devices\n"
1299         "  - show UEFI devices\n"
1300         "efidebug drivers\n"
1301         "  - show UEFI drivers\n"
1302         "efidebug dh\n"
1303         "  - show UEFI handles\n"
1304         "efidebug images\n"
1305         "  - show loaded images\n"
1306         "efidebug memmap\n"
1307         "  - show UEFI memory map\n"
1308         "efidebug tables\n"
1309         "  - show UEFI configuration tables\n"
1310         "efidebug test bootmgr\n"
1311         "  - run simple bootmgr for test\n"
1312         "efidebug query [-nv][-bs][-rt][-at]\n"
1313         "  - show size of UEFI variables store\n";
1314 #endif
1315
1316 U_BOOT_CMD(
1317         efidebug, 10, 0, do_efidebug,
1318         "Configure UEFI environment",
1319         efidebug_help_text
1320 );