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_RUNTIME, "RT"},
 418 };
 419
 420 /**
 421  * print_memory_attributes() - print memory map attributes
 422  *
 423  * @attributes: Attribute value
 424  *
 425  * Print memory map attributes
 426  */
 427 static void print_memory_attributes(u64 attributes)
 428 {
 429         int sep, i;
 430
 431         for (sep = 0, i = 0; i < ARRAY_SIZE(efi_mem_attrs); i++)
 432                 if (attributes & efi_mem_attrs[i].bit) {
 433                         if (sep) {
 434                                 putc('|');
 435                         } else {
 436                                 putc(' ');
 437                                 sep = 1;
 438                         }
 439                         puts(efi_mem_attrs[i].text);
 440                 }
 441 }
 442
 443 #define EFI_PHYS_ADDR_WIDTH (int)(sizeof(efi_physical_addr_t) * 2)
 444
 445 /**
 446  * do_efi_show_memmap() - show UEFI memory map
 447  *
 448  * @cmdtp:      Command table
 449  * @flag:       Command flag
 450  * @argc:       Number of arguments
 451  * @argv:       Argument array
 452  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 453  *
 454  * Implement efidebug "memmap" sub-command.
 455  * Show UEFI memory map.
 456  */
 457 static int do_efi_show_memmap(struct cmd_tbl *cmdtp, int flag,
 458                               int argc, char *const argv[])
 459 {
 460         struct efi_mem_desc *memmap = NULL, *map;
 461         efi_uintn_t map_size = 0;
 462         const char *type;
 463         int i;
 464         efi_status_t ret;
 465
 466         ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL);
 467         if (ret == EFI_BUFFER_TOO_SMALL) {
 468                 map_size += sizeof(struct efi_mem_desc); /* for my own */
 469                 ret = efi_allocate_pool(EFI_LOADER_DATA, map_size,
 470                                         (void *)&memmap);
 471                 if (ret != EFI_SUCCESS)
 472                         return CMD_RET_FAILURE;
 473                 ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL);
 474         }
 475         if (ret != EFI_SUCCESS) {
 476                 efi_free_pool(memmap);
 477                 return CMD_RET_FAILURE;
 478         }
 479
 480         printf("Type             Start%.*s End%.*s Attributes\n",
 481                EFI_PHYS_ADDR_WIDTH - 5, spc, EFI_PHYS_ADDR_WIDTH - 3, spc);
 482         printf("================ %.*s %.*s ==========\n",
 483                EFI_PHYS_ADDR_WIDTH, sep, EFI_PHYS_ADDR_WIDTH, sep);
 484         /*
 485          * Coverity check: dereferencing null pointer "map."
 486          * This is a false positive as memmap will always be
 487          * populated by allocate_pool() above.
 488          */
 489         for (i = 0, map = memmap; i < map_size / sizeof(*map); map++, i++) {
 490                 if (map->type < ARRAY_SIZE(efi_mem_type_string))
 491                         type = efi_mem_type_string[map->type];
 492                 else
 493                         type = "(unknown)";
 494
 495                 printf("%-16s %.*llx-%.*llx", type,
 496                        EFI_PHYS_ADDR_WIDTH,
 497                        (u64)map_to_sysmem((void *)(uintptr_t)
 498                                           map->physical_start),
 499                        EFI_PHYS_ADDR_WIDTH,
 500                        (u64)map_to_sysmem((void *)(uintptr_t)
 501                                           (map->physical_start +
 502                                            map->num_pages * EFI_PAGE_SIZE)));
 503
 504                 print_memory_attributes(map->attribute);
 505                 putc('\n');
 506         }
 507
 508         efi_free_pool(memmap);
 509
 510         return CMD_RET_SUCCESS;
 511 }
 512
 513 /**
 514  * do_efi_show_tables() - show UEFI configuration tables
 515  *
 516  * @cmdtp:      Command table
 517  * @flag:       Command flag
 518  * @argc:       Number of arguments
 519  * @argv:       Argument array
 520  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 521  *
 522  * Implement efidebug "tables" sub-command.
 523  * Show UEFI configuration tables.
 524  */
 525 static int do_efi_show_tables(struct cmd_tbl *cmdtp, int flag,
 526                               int argc, char *const argv[])
 527 {
 528         efi_uintn_t i;
 529         const char *guid_str;
 530
 531         for (i = 0; i < systab.nr_tables; ++i) {
 532                 guid_str = get_guid_text(&systab.tables[i].guid);
 533                 if (!guid_str)
 534                         guid_str = "";
 535                 printf("%pUl %s\n", &systab.tables[i].guid, guid_str);
 536         }
 537
 538         return CMD_RET_SUCCESS;
 539 }
 540
 541 /**
 542  * do_efi_boot_add() - set UEFI load option
 543  *
 544  * @cmdtp:      Command table
 545  * @flag:       Command flag
 546  * @argc:       Number of arguments
 547  * @argv:       Argument array
 548  * Return:      CMD_RET_SUCCESS on success,
 549  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
 550  *
 551  * Implement efidebug "boot add" sub-command. Create or change UEFI load option.
 552  *
 553  *     efidebug boot add <id> <label> <interface> <devnum>[:<part>] <file> <options>
 554  */
 555 static int do_efi_boot_add(struct cmd_tbl *cmdtp, int flag,
 556                            int argc, char *const argv[])
 557 {
 558         int id;
 559         char *endp;
 560         char var_name[9];
 561         u16 var_name16[9], *p;
 562         efi_guid_t guid;
 563         size_t label_len, label_len16;
 564         u16 *label;
 565         struct efi_device_path *device_path = NULL, *file_path = NULL;
 566         struct efi_load_option lo;
 567         void *data = NULL;
 568         efi_uintn_t size;
 569         efi_status_t ret;
 570         int r = CMD_RET_SUCCESS;
 571
 572         if (argc < 6 || argc > 7)
 573                 return CMD_RET_USAGE;
 574
 575         id = (int)simple_strtoul(argv[1], &endp, 16);
 576         if (*endp != '\0' || id > 0xffff)
 577                 return CMD_RET_USAGE;
 578
 579         sprintf(var_name, "Boot%04X", id);
 580         p = var_name16;
 581         utf8_utf16_strncpy(&p, var_name, 9);
 582
 583         guid = efi_global_variable_guid;
 584
 585         /* attributes */
 586         lo.attributes = LOAD_OPTION_ACTIVE; /* always ACTIVE */
 587
 588         /* label */
 589         label_len = strlen(argv[2]);
 590         label_len16 = utf8_utf16_strnlen(argv[2], label_len);
 591         label = malloc((label_len16 + 1) * sizeof(u16));
 592         if (!label)
 593                 return CMD_RET_FAILURE;
 594         lo.label = label; /* label will be changed below */
 595         utf8_utf16_strncpy(&label, argv[2], label_len);
 596
 597         /* file path */
 598         ret = efi_dp_from_name(argv[3], argv[4], argv[5], &device_path,
 599                                &file_path);
 600         if (ret != EFI_SUCCESS) {
 601                 printf("Cannot create device path for \"%s %s\"\n",
 602                        argv[3], argv[4]);
 603                 r = CMD_RET_FAILURE;
 604                 goto out;
 605         }
 606         lo.file_path = file_path;
 607         lo.file_path_length = efi_dp_size(file_path)
 608                                 + sizeof(struct efi_device_path); /* for END */
 609
 610         /* optional data */
 611         if (argc == 6)
 612                 lo.optional_data = NULL;
 613         else
 614                 lo.optional_data = (const u8 *)argv[6];
 615
 616         size = efi_serialize_load_option(&lo, (u8 **)&data);
 617         if (!size) {
 618                 r = CMD_RET_FAILURE;
 619                 goto out;
 620         }
 621
 622         ret = EFI_CALL(efi_set_variable(var_name16, &guid,
 623                                         EFI_VARIABLE_NON_VOLATILE |
 624                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
 625                                         EFI_VARIABLE_RUNTIME_ACCESS,
 626                                         size, data));
 627         if (ret != EFI_SUCCESS) {
 628                 printf("Cannot set %ls\n", var_name16);
 629                 r = CMD_RET_FAILURE;
 630         }
 631 out:
 632         free(data);
 633         efi_free_pool(device_path);
 634         efi_free_pool(file_path);
 635         free(lo.label);
 636
 637         return r;
 638 }
 639
 640 /**
 641  * do_efi_boot_rm() - delete UEFI load options
 642  *
 643  * @cmdtp:      Command table
 644  * @flag:       Command flag
 645  * @argc:       Number of arguments
 646  * @argv:       Argument array
 647  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 648  *
 649  * Implement efidebug "boot rm" sub-command.
 650  * Delete UEFI load options.
 651  *
 652  *     efidebug boot rm <id> ...
 653  */
 654 static int do_efi_boot_rm(struct cmd_tbl *cmdtp, int flag,
 655                           int argc, char *const argv[])
 656 {
 657         efi_guid_t guid;
 658         int id, i;
 659         char *endp;
 660         char var_name[9];
 661         u16 var_name16[9], *p;
 662         efi_status_t ret;
 663
 664         if (argc == 1)
 665                 return CMD_RET_USAGE;
 666
 667         guid = efi_global_variable_guid;
 668         for (i = 1; i < argc; i++, argv++) {
 669                 id = (int)simple_strtoul(argv[1], &endp, 16);
 670                 if (*endp != '\0' || id > 0xffff)
 671                         return CMD_RET_FAILURE;
 672
 673                 sprintf(var_name, "Boot%04X", id);
 674                 p = var_name16;
 675                 utf8_utf16_strncpy(&p, var_name, 9);
 676
 677                 ret = EFI_CALL(efi_set_variable(var_name16, &guid, 0, 0, NULL));
 678                 if (ret) {
 679                         printf("Cannot remove %ls\n", var_name16);
 680                         return CMD_RET_FAILURE;
 681                 }
 682         }
 683
 684         return CMD_RET_SUCCESS;
 685 }
 686
 687 /**
 688  * show_efi_boot_opt_data() - dump UEFI load option
 689  *
 690  * @varname16:  variable name
 691  * @data:       value of UEFI load option variable
 692  * @size:       size of the boot option
 693  *
 694  * Decode the value of UEFI load option variable and print information.
 695  */
 696 static void show_efi_boot_opt_data(u16 *varname16, void *data, size_t size)
 697 {
 698         struct efi_load_option lo;
 699         char *label, *p;
 700         size_t label_len16, label_len;
 701         u16 *dp_str;
 702
 703         efi_deserialize_load_option(&lo, data);
 704
 705         label_len16 = u16_strlen(lo.label);
 706         label_len = utf16_utf8_strnlen(lo.label, label_len16);
 707         label = malloc(label_len + 1);
 708         if (!label)
 709                 return;
 710         p = label;
 711         utf16_utf8_strncpy(&p, lo.label, label_len16);
 712
 713         printf("%ls:\nattributes: %c%c%c (0x%08x)\n",
 714                varname16,
 715                /* ACTIVE */
 716                lo.attributes & LOAD_OPTION_ACTIVE ? 'A' : '-',
 717                /* FORCE RECONNECT */
 718                lo.attributes & LOAD_OPTION_FORCE_RECONNECT ? 'R' : '-',
 719                /* HIDDEN */
 720                lo.attributes & LOAD_OPTION_HIDDEN ? 'H' : '-',
 721                lo.attributes);
 722         printf("  label: %s\n", label);
 723
 724         dp_str = efi_dp_str(lo.file_path);
 725         printf("  file_path: %ls\n", dp_str);
 726         efi_free_pool(dp_str);
 727
 728         printf("  data:\n");
 729         print_hex_dump("    ", DUMP_PREFIX_OFFSET, 16, 1,
 730                        lo.optional_data, size + (u8 *)data -
 731                        (u8 *)lo.optional_data, true);
 732         free(label);
 733 }
 734
 735 /**
 736  * show_efi_boot_opt() - dump UEFI load option
 737  *
 738  * @varname16:  variable name
 739  *
 740  * Dump information defined by UEFI load option.
 741  */
 742 static void show_efi_boot_opt(u16 *varname16)
 743 {
 744         void *data;
 745         efi_uintn_t size;
 746         efi_status_t ret;
 747
 748         size = 0;
 749         ret = EFI_CALL(efi_get_variable(varname16, &efi_global_variable_guid,
 750                                         NULL, &size, NULL));
 751         if (ret == EFI_BUFFER_TOO_SMALL) {
 752                 data = malloc(size);
 753                 if (!data) {
 754                         printf("ERROR: Out of memory\n");
 755                         return;
 756                 }
 757                 ret = EFI_CALL(efi_get_variable(varname16,
 758                                                 &efi_global_variable_guid,
 759                                                 NULL, &size, data));
 760                 if (ret == EFI_SUCCESS)
 761                         show_efi_boot_opt_data(varname16, data, size);
 762                 free(data);
 763         }
 764 }
 765
 766 static int u16_tohex(u16 c)
 767 {
 768         if (c >= '0' && c <= '9')
 769                 return c - '0';
 770         if (c >= 'A' && c <= 'F')
 771                 return c - 'A' + 10;
 772
 773         /* not hexadecimal */
 774         return -1;
 775 }
 776
 777 /**
 778  * show_efi_boot_dump() - dump all UEFI load options
 779  *
 780  * @cmdtp:      Command table
 781  * @flag:       Command flag
 782  * @argc:       Number of arguments
 783  * @argv:       Argument array
 784  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 785  *
 786  * Implement efidebug "boot dump" sub-command.
 787  * Dump information of all UEFI load options defined.
 788  *
 789  *     efidebug boot dump
 790  */
 791 static int do_efi_boot_dump(struct cmd_tbl *cmdtp, int flag,
 792                             int argc, char *const argv[])
 793 {
 794         u16 *var_name16, *p;
 795         efi_uintn_t buf_size, size;
 796         efi_guid_t guid;
 797         int id, i, digit;
 798         efi_status_t ret;
 799
 800         if (argc > 1)
 801                 return CMD_RET_USAGE;
 802
 803         buf_size = 128;
 804         var_name16 = malloc(buf_size);
 805         if (!var_name16)
 806                 return CMD_RET_FAILURE;
 807
 808         var_name16[0] = 0;
 809         for (;;) {
 810                 size = buf_size;
 811                 ret = EFI_CALL(efi_get_next_variable_name(&size, var_name16,
 812                                                           &guid));
 813                 if (ret == EFI_NOT_FOUND)
 814                         break;
 815                 if (ret == EFI_BUFFER_TOO_SMALL) {
 816                         buf_size = size;
 817                         p = realloc(var_name16, buf_size);
 818                         if (!p) {
 819                                 free(var_name16);
 820                                 return CMD_RET_FAILURE;
 821                         }
 822                         var_name16 = p;
 823                         ret = EFI_CALL(efi_get_next_variable_name(&size,
 824                                                                   var_name16,
 825                                                                   &guid));
 826                 }
 827                 if (ret != EFI_SUCCESS) {
 828                         free(var_name16);
 829                         return CMD_RET_FAILURE;
 830                 }
 831
 832                 if (memcmp(var_name16, L"Boot", 8))
 833                         continue;
 834
 835                 for (id = 0, i = 0; i < 4; i++) {
 836                         digit = u16_tohex(var_name16[4 + i]);
 837                         if (digit < 0)
 838                                 break;
 839                         id = (id << 4) + digit;
 840                 }
 841                 if (i == 4 && !var_name16[8])
 842                         show_efi_boot_opt(var_name16);
 843         }
 844
 845         free(var_name16);
 846
 847         return CMD_RET_SUCCESS;
 848 }
 849
 850 /**
 851  * show_efi_boot_order() - show order of UEFI load options
 852  *
 853  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
 854  *
 855  * Show order of UEFI load options defined by BootOrder variable.
 856  */
 857 static int show_efi_boot_order(void)
 858 {
 859         u16 *bootorder;
 860         efi_uintn_t size;
 861         int num, i;
 862         char var_name[9];
 863         u16 var_name16[9], *p16;
 864         void *data;
 865         struct efi_load_option lo;
 866         char *label, *p;
 867         size_t label_len16, label_len;
 868         efi_status_t ret;
 869
 870         size = 0;
 871         ret = EFI_CALL(efi_get_variable(L"BootOrder", &efi_global_variable_guid,
 872                                         NULL, &size, NULL));
 873         if (ret != EFI_BUFFER_TOO_SMALL) {
 874                 if (ret == EFI_NOT_FOUND) {
 875                         printf("BootOrder not defined\n");
 876                         return CMD_RET_SUCCESS;
 877                 } else {
 878                         return CMD_RET_FAILURE;
 879                 }
 880         }
 881         bootorder = malloc(size);
 882         if (!bootorder) {
 883                 printf("ERROR: Out of memory\n");
 884                 return CMD_RET_FAILURE;
 885         }
 886         ret = EFI_CALL(efi_get_variable(L"BootOrder", &efi_global_variable_guid,
 887                                         NULL, &size, bootorder));
 888         if (ret != EFI_SUCCESS) {
 889                 ret = CMD_RET_FAILURE;
 890                 goto out;
 891         }
 892
 893         num = size / sizeof(u16);
 894         for (i = 0; i < num; i++) {
 895                 sprintf(var_name, "Boot%04X", bootorder[i]);
 896                 p16 = var_name16;
 897                 utf8_utf16_strncpy(&p16, var_name, 9);
 898
 899                 size = 0;
 900                 ret = EFI_CALL(efi_get_variable(var_name16,
 901                                                 &efi_global_variable_guid, NULL,
 902                                                 &size, NULL));
 903                 if (ret != EFI_BUFFER_TOO_SMALL) {
 904                         printf("%2d: %s: (not defined)\n", i + 1, var_name);
 905                         continue;
 906                 }
 907
 908                 data = malloc(size);
 909                 if (!data) {
 910                         ret = CMD_RET_FAILURE;
 911                         goto out;
 912                 }
 913                 ret = EFI_CALL(efi_get_variable(var_name16,
 914                                                 &efi_global_variable_guid, NULL,
 915                                                 &size, data));
 916                 if (ret != EFI_SUCCESS) {
 917                         free(data);
 918                         ret = CMD_RET_FAILURE;
 919                         goto out;
 920                 }
 921
 922                 efi_deserialize_load_option(&lo, data);
 923
 924                 label_len16 = u16_strlen(lo.label);
 925                 label_len = utf16_utf8_strnlen(lo.label, label_len16);
 926                 label = malloc(label_len + 1);
 927                 if (!label) {
 928                         free(data);
 929                         ret = CMD_RET_FAILURE;
 930                         goto out;
 931                 }
 932                 p = label;
 933                 utf16_utf8_strncpy(&p, lo.label, label_len16);
 934                 printf("%2d: %s: %s\n", i + 1, var_name, label);
 935                 free(label);
 936
 937                 free(data);
 938         }
 939 out:
 940         free(bootorder);
 941
 942         return ret;
 943 }
 944
 945 /**
 946  * do_efi_boot_next() - manage UEFI BootNext variable
 947  *
 948  * @cmdtp:      Command table
 949  * @flag:       Command flag
 950  * @argc:       Number of arguments
 951  * @argv:       Argument array
 952  * Return:      CMD_RET_SUCCESS on success,
 953  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
 954  *
 955  * Implement efidebug "boot next" sub-command.
 956  * Set BootNext variable.
 957  *
 958  *     efidebug boot next <id>
 959  */
 960 static int do_efi_boot_next(struct cmd_tbl *cmdtp, int flag,
 961                             int argc, char *const argv[])
 962 {
 963         u16 bootnext;
 964         efi_uintn_t size;
 965         char *endp;
 966         efi_guid_t guid;
 967         efi_status_t ret;
 968         int r = CMD_RET_SUCCESS;
 969
 970         if (argc != 2)
 971                 return CMD_RET_USAGE;
 972
 973         bootnext = (u16)simple_strtoul(argv[1], &endp, 16);
 974         if (*endp) {
 975                 printf("invalid value: %s\n", argv[1]);
 976                 r = CMD_RET_FAILURE;
 977                 goto out;
 978         }
 979
 980         guid = efi_global_variable_guid;
 981         size = sizeof(u16);
 982         ret = EFI_CALL(efi_set_variable(L"BootNext", &guid,
 983                                         EFI_VARIABLE_NON_VOLATILE |
 984                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
 985                                         EFI_VARIABLE_RUNTIME_ACCESS,
 986                                         size, &bootnext));
 987         if (ret != EFI_SUCCESS) {
 988                 printf("Cannot set BootNext\n");
 989                 r = CMD_RET_FAILURE;
 990         }
 991 out:
 992         return r;
 993 }
 994
 995 /**
 996  * do_efi_boot_order() - manage UEFI BootOrder variable
 997  *
 998  * @cmdtp:      Command table
 999  * @flag:       Command flag
1000  * @argc:       Number of arguments
1001  * @argv:       Argument array
1002  * Return:      CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
1003  *
1004  * Implement efidebug "boot order" sub-command.
1005  * Show order of UEFI load options, or change it in BootOrder variable.
1006  *
1007  *     efidebug boot order [<id> ...]
1008  */
1009 static int do_efi_boot_order(struct cmd_tbl *cmdtp, int flag,
1010                              int argc, char *const argv[])
1011 {
1012         u16 *bootorder = NULL;
1013         efi_uintn_t size;
1014         int id, i;
1015         char *endp;
1016         efi_guid_t guid;
1017         efi_status_t ret;
1018         int r = CMD_RET_SUCCESS;
1019
1020         if (argc == 1)
1021                 return show_efi_boot_order();
1022
1023         argc--;
1024         argv++;
1025
1026         size = argc * sizeof(u16);
1027         bootorder = malloc(size);
1028         if (!bootorder)
1029                 return CMD_RET_FAILURE;
1030
1031         for (i = 0; i < argc; i++) {
1032                 id = (int)simple_strtoul(argv[i], &endp, 16);
1033                 if (*endp != '\0' || id > 0xffff) {
1034                         printf("invalid value: %s\n", argv[i]);
1035                         r = CMD_RET_FAILURE;
1036                         goto out;
1037                 }
1038
1039                 bootorder[i] = (u16)id;
1040         }
1041
1042         guid = efi_global_variable_guid;
1043         ret = EFI_CALL(efi_set_variable(L"BootOrder", &guid,
1044                                         EFI_VARIABLE_NON_VOLATILE |
1045                                         EFI_VARIABLE_BOOTSERVICE_ACCESS |
1046                                         EFI_VARIABLE_RUNTIME_ACCESS,
1047                                         size, bootorder));
1048         if (ret != EFI_SUCCESS) {
1049                 printf("Cannot set BootOrder\n");
1050                 r = CMD_RET_FAILURE;
1051         }
1052 out:
1053         free(bootorder);
1054
1055         return r;
1056 }
1057
1058 static struct cmd_tbl cmd_efidebug_boot_sub[] = {
1059         U_BOOT_CMD_MKENT(add, CONFIG_SYS_MAXARGS, 1, do_efi_boot_add, "", ""),
1060         U_BOOT_CMD_MKENT(rm, CONFIG_SYS_MAXARGS, 1, do_efi_boot_rm, "", ""),
1061         U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_efi_boot_dump, "", ""),
1062         U_BOOT_CMD_MKENT(next, CONFIG_SYS_MAXARGS, 1, do_efi_boot_next, "", ""),
1063         U_BOOT_CMD_MKENT(order, CONFIG_SYS_MAXARGS, 1, do_efi_boot_order,
1064                          "", ""),
1065 };
1066
1067 /**
1068  * do_efi_boot_opt() - manage UEFI load options
1069  *
1070  * @cmdtp:      Command table
1071  * @flag:       Command flag
1072  * @argc:       Number of arguments
1073  * @argv:       Argument array
1074  * Return:      CMD_RET_SUCCESS on success,
1075  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1076  *
1077  * Implement efidebug "boot" sub-command.
1078  */
1079 static int do_efi_boot_opt(struct cmd_tbl *cmdtp, int flag,
1080                            int argc, char *const argv[])
1081 {
1082         struct cmd_tbl *cp;
1083
1084         if (argc < 2)
1085                 return CMD_RET_USAGE;
1086
1087         argc--; argv++;
1088
1089         cp = find_cmd_tbl(argv[0], cmd_efidebug_boot_sub,
1090                           ARRAY_SIZE(cmd_efidebug_boot_sub));
1091         if (!cp)
1092                 return CMD_RET_USAGE;
1093
1094         return cp->cmd(cmdtp, flag, argc, argv);
1095 }
1096
1097 /**
1098  * do_efi_test_bootmgr() - run simple bootmgr for test
1099  *
1100  * @cmdtp:      Command table
1101  * @flag:       Command flag
1102  * @argc:       Number of arguments
1103  * @argv:       Argument array
1104  * Return:      CMD_RET_SUCCESS on success,
1105  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1106  *
1107  * Implement efidebug "test bootmgr" sub-command.
1108  * Run simple bootmgr for test.
1109  *
1110  *     efidebug test bootmgr
1111  */
1112 static int do_efi_test_bootmgr(struct cmd_tbl *cmdtp, int flag,
1113                                int argc, char * const argv[])
1114 {
1115         efi_handle_t image;
1116         efi_uintn_t exit_data_size = 0;
1117         u16 *exit_data = NULL;
1118         efi_status_t ret;
1119
1120         ret = efi_bootmgr_load(&image);
1121         printf("efi_bootmgr_load() returned: %ld\n", ret & ~EFI_ERROR_MASK);
1122
1123         /* We call efi_start_image() even if error for test purpose. */
1124         ret = EFI_CALL(efi_start_image(image, &exit_data_size, &exit_data));
1125         printf("efi_start_image() returned: %ld\n", ret & ~EFI_ERROR_MASK);
1126         if (ret && exit_data)
1127                 efi_free_pool(exit_data);
1128
1129         efi_restore_gd();
1130
1131         return CMD_RET_SUCCESS;
1132 }
1133
1134 static struct cmd_tbl cmd_efidebug_test_sub[] = {
1135         U_BOOT_CMD_MKENT(bootmgr, CONFIG_SYS_MAXARGS, 1, do_efi_test_bootmgr,
1136                          "", ""),
1137 };
1138
1139 /**
1140  * do_efi_test() - manage UEFI load options
1141  *
1142  * @cmdtp:      Command table
1143  * @flag:       Command flag
1144  * @argc:       Number of arguments
1145  * @argv:       Argument array
1146  * Return:      CMD_RET_SUCCESS on success,
1147  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1148  *
1149  * Implement efidebug "test" sub-command.
1150  */
1151 static int do_efi_test(struct cmd_tbl *cmdtp, int flag,
1152                        int argc, char * const argv[])
1153 {
1154         struct cmd_tbl *cp;
1155
1156         if (argc < 2)
1157                 return CMD_RET_USAGE;
1158
1159         argc--; argv++;
1160
1161         cp = find_cmd_tbl(argv[0], cmd_efidebug_test_sub,
1162                           ARRAY_SIZE(cmd_efidebug_test_sub));
1163         if (!cp)
1164                 return CMD_RET_USAGE;
1165
1166         return cp->cmd(cmdtp, flag, argc, argv);
1167 }
1168
1169 /**
1170  * do_efi_query_info() - QueryVariableInfo EFI service
1171  *
1172  * @cmdtp:      Command table
1173  * @flag:       Command flag
1174  * @argc:       Number of arguments
1175  * @argv:       Argument array
1176  * Return:      CMD_RET_SUCCESS on success,
1177  *              CMD_RET_USAGE or CMD_RET_FAILURE on failure
1178  *
1179  * Implement efidebug "test" sub-command.
1180  */
1181
1182 static int do_efi_query_info(struct cmd_tbl *cmdtp, int flag,
1183                              int argc, char * const argv[])
1184 {
1185         efi_status_t ret;
1186         u32 attr = 0;
1187         u64 max_variable_storage_size;
1188         u64 remain_variable_storage_size;
1189         u64 max_variable_size;
1190         int i;
1191
1192         for (i = 1; i < argc; i++) {
1193                 if (!strcmp(argv[i], "-bs"))
1194                         attr |= EFI_VARIABLE_BOOTSERVICE_ACCESS;
1195                 else if (!strcmp(argv[i], "-rt"))
1196                         attr |= EFI_VARIABLE_RUNTIME_ACCESS;
1197                 else if (!strcmp(argv[i], "-nv"))
1198                         attr |= EFI_VARIABLE_NON_VOLATILE;
1199                 else if (!strcmp(argv[i], "-at"))
1200                         attr |=
1201                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;
1202         }
1203
1204         ret = EFI_CALL(efi_query_variable_info(attr,
1205                                                &max_variable_storage_size,
1206                                                &remain_variable_storage_size,
1207                                                &max_variable_size));
1208         if (ret != EFI_SUCCESS) {
1209                 printf("Error: Cannot query UEFI variables, r = %lu\n",
1210                        ret & ~EFI_ERROR_MASK);
1211                 return CMD_RET_FAILURE;
1212         }
1213
1214         printf("Max storage size %llu\n", max_variable_storage_size);
1215         printf("Remaining storage size %llu\n", remain_variable_storage_size);
1216         printf("Max variable size %llu\n", max_variable_size);
1217
1218         return CMD_RET_SUCCESS;
1219 }
1220
1221 static struct cmd_tbl cmd_efidebug_sub[] = {
1222         U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""),
1223         U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices,
1224                          "", ""),
1225         U_BOOT_CMD_MKENT(drivers, CONFIG_SYS_MAXARGS, 1, do_efi_show_drivers,
1226                          "", ""),
1227         U_BOOT_CMD_MKENT(dh, CONFIG_SYS_MAXARGS, 1, do_efi_show_handles,
1228                          "", ""),
1229         U_BOOT_CMD_MKENT(images, CONFIG_SYS_MAXARGS, 1, do_efi_show_images,
1230                          "", ""),
1231         U_BOOT_CMD_MKENT(memmap, CONFIG_SYS_MAXARGS, 1, do_efi_show_memmap,
1232                          "", ""),
1233         U_BOOT_CMD_MKENT(tables, CONFIG_SYS_MAXARGS, 1, do_efi_show_tables,
1234                          "", ""),
1235         U_BOOT_CMD_MKENT(test, CONFIG_SYS_MAXARGS, 1, do_efi_test,
1236                          "", ""),
1237         U_BOOT_CMD_MKENT(query, CONFIG_SYS_MAXARGS, 1, do_efi_query_info,
1238                          "", ""),
1239 };
1240
1241 /**
1242  * do_efidebug() - display and configure UEFI environment
1243  *
1244  * @cmdtp:      Command table
1245  * @flag:       Command flag
1246  * @argc:       Number of arguments
1247  * @argv:       Argument array
1248  * Return:      CMD_RET_SUCCESS on success,
1249  *              CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
1250  *
1251  * Implement efidebug command which allows us to display and
1252  * configure UEFI environment.
1253  */
1254 static int do_efidebug(struct cmd_tbl *cmdtp, int flag,
1255                        int argc, char *const argv[])
1256 {
1257         struct cmd_tbl *cp;
1258         efi_status_t r;
1259
1260         if (argc < 2)
1261                 return CMD_RET_USAGE;
1262
1263         argc--; argv++;
1264
1265         /* Initialize UEFI drivers */
1266         r = efi_init_obj_list();
1267         if (r != EFI_SUCCESS) {
1268                 printf("Error: Cannot initialize UEFI sub-system, r = %lu\n",
1269                        r & ~EFI_ERROR_MASK);
1270                 return CMD_RET_FAILURE;
1271         }
1272
1273         cp = find_cmd_tbl(argv[0], cmd_efidebug_sub,
1274                           ARRAY_SIZE(cmd_efidebug_sub));
1275         if (!cp)
1276                 return CMD_RET_USAGE;
1277
1278         return cp->cmd(cmdtp, flag, argc, argv);
1279 }
1280
1281 #ifdef CONFIG_SYS_LONGHELP
1282 static char efidebug_help_text[] =
1283         "  - UEFI Shell-like interface to configure UEFI environment\n"
1284         "\n"
1285         "efidebug boot add <bootid> <label> <interface> <devnum>[:<part>] <file path> [<load options>]\n"
1286         "  - set UEFI BootXXXX variable\n"
1287         "    <load options> will be passed to UEFI application\n"
1288         "efidebug boot rm <bootid#1> [<bootid#2> [<bootid#3> [...]]]\n"
1289         "  - delete UEFI BootXXXX variables\n"
1290         "efidebug boot dump\n"
1291         "  - dump all UEFI BootXXXX variables\n"
1292         "efidebug boot next <bootid>\n"
1293         "  - set UEFI BootNext variable\n"
1294         "efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n"
1295         "  - set/show UEFI boot order\n"
1296         "\n"
1297         "efidebug devices\n"
1298         "  - show UEFI devices\n"
1299         "efidebug drivers\n"
1300         "  - show UEFI drivers\n"
1301         "efidebug dh\n"
1302         "  - show UEFI handles\n"
1303         "efidebug images\n"
1304         "  - show loaded images\n"
1305         "efidebug memmap\n"
1306         "  - show UEFI memory map\n"
1307         "efidebug tables\n"
1308         "  - show UEFI configuration tables\n"
1309         "efidebug test bootmgr\n"
1310         "  - run simple bootmgr for test\n"
1311         "efidebug query [-nv][-bs][-rt][-at]\n"
1312         "  - show size of UEFI variables store\n";
1313 #endif
1314
1315 U_BOOT_CMD(
1316         efidebug, 10, 0, do_efidebug,
1317         "Configure UEFI environment",
1318         efidebug_help_text
1319 );