cmd/bootefi.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  EFI application loader
   4  *
   5  *  Copyright (c) 2016 Alexander Graf
   6  */
   7
   8 #define LOG_CATEGORY LOGC_EFI
   9
  10 #include <common.h>
  11 #include <bootm.h>
  12 #include <charset.h>
  13 #include <command.h>
  14 #include <dm.h>
  15 #include <efi_loader.h>
  16 #include <efi_selftest.h>
  17 #include <env.h>
  18 #include <errno.h>
  19 #include <image.h>
  20 #include <log.h>
  21 #include <malloc.h>
  22 #include <asm/global_data.h>
  23 #include <linux/libfdt.h>
  24 #include <linux/libfdt_env.h>
  25 #include <mapmem.h>
  26 #include <memalign.h>
  27 #include <asm-generic/sections.h>
  28 #include <linux/linkage.h>
  29
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 static struct efi_device_path *bootefi_image_path;
  33 static struct efi_device_path *bootefi_device_path;
  34 static void *image_addr;
  35 static size_t image_size;
  36
  37 /**
  38  * efi_get_image_parameters() - return image parameters
  39  *
  40  * @img_addr:           address of loaded image in memory
  41  * @img_size:           size of loaded image
  42  */
  43 void efi_get_image_parameters(void **img_addr, size_t *img_size)
  44 {
  45         *img_addr = image_addr;
  46         *img_size = image_size;
  47 }
  48
  49 /**
  50  * efi_clear_bootdev() - clear boot device
  51  */
  52 static void efi_clear_bootdev(void)
  53 {
  54         efi_free_pool(bootefi_device_path);
  55         efi_free_pool(bootefi_image_path);
  56         bootefi_device_path = NULL;
  57         bootefi_image_path = NULL;
  58         image_addr = NULL;
  59         image_size = 0;
  60 }
  61
  62 /**
  63  * efi_set_bootdev() - set boot device
  64  *
  65  * This function is called when a file is loaded, e.g. via the 'load' command.
  66  * We use the path to this file to inform the UEFI binary about the boot device.
  67  *
  68  * @dev:                device, e.g. "MMC"
  69  * @devnr:              number of the device, e.g. "1:2"
  70  * @path:               path to file loaded
  71  * @buffer:             buffer with file loaded
  72  * @buffer_size:        size of file loaded
  73  */
  74 void efi_set_bootdev(const char *dev, const char *devnr, const char *path,
  75                      void *buffer, size_t buffer_size)
  76 {
  77         struct efi_device_path *device, *image;
  78         efi_status_t ret;
  79
  80         log_debug("dev=%s, devnr=%s, path=%s, buffer=%p, size=%zx\n", dev,
  81                   devnr, path, buffer, buffer_size);
  82
  83         /* Forget overwritten image */
  84         if (buffer + buffer_size >= image_addr &&
  85             image_addr + image_size >= buffer)
  86                 efi_clear_bootdev();
  87
  88         /* Remember only PE-COFF and FIT images */
  89         if (efi_check_pe(buffer, buffer_size, NULL) != EFI_SUCCESS) {
  90                 if (IS_ENABLED(CONFIG_FIT) &&
  91                     !fit_check_format(buffer, IMAGE_SIZE_INVAL)) {
  92                         /*
  93                          * FIT images of type EFI_OS are started via command
  94                          * bootm. We should not use their boot device with the
  95                          * bootefi command.
  96                          */
  97                         buffer = 0;
  98                         buffer_size = 0;
  99                 } else {
 100                         log_debug("- not remembering image\n");
 101                         return;
 102                 }
 103         }
 104
 105         /* efi_set_bootdev() is typically called repeatedly, recover memory */
 106         efi_clear_bootdev();
 107
 108         image_addr = buffer;
 109         image_size = buffer_size;
 110
 111         ret = efi_dp_from_name(dev, devnr, path, &device, &image);
 112         if (ret == EFI_SUCCESS) {
 113                 bootefi_device_path = device;
 114                 if (image) {
 115                         /* FIXME: image should not contain device */
 116                         struct efi_device_path *image_tmp = image;
 117
 118                         efi_dp_split_file_path(image, &device, &image);
 119                         efi_free_pool(image_tmp);
 120                 }
 121                 bootefi_image_path = image;
 122                 log_debug("- boot device %pD\n", device);
 123                 if (image)
 124                         log_debug("- image %pD\n", image);
 125         } else {
 126                 log_debug("- efi_dp_from_name() failed, err=%lx\n", ret);
 127                 efi_clear_bootdev();
 128         }
 129 }
 130
 131 /**
 132  * efi_env_set_load_options() - set load options from environment variable
 133  *
 134  * @handle:             the image handle
 135  * @env_var:            name of the environment variable
 136  * @load_options:       pointer to load options (output)
 137  * Return:              status code
 138  */
 139 static efi_status_t efi_env_set_load_options(efi_handle_t handle,
 140                                              const char *env_var,
 141                                              u16 **load_options)
 142 {
 143         const char *env = env_get(env_var);
 144         size_t size;
 145         u16 *pos;
 146         efi_status_t ret;
 147
 148         *load_options = NULL;
 149         if (!env)
 150                 return EFI_SUCCESS;
 151         size = sizeof(u16) * (utf8_utf16_strlen(env) + 1);
 152         pos = calloc(size, 1);
 153         if (!pos)
 154                 return EFI_OUT_OF_RESOURCES;
 155         *load_options = pos;
 156         utf8_utf16_strcpy(&pos, env);
 157         ret = efi_set_load_options(handle, size, *load_options);
 158         if (ret != EFI_SUCCESS) {
 159                 free(*load_options);
 160                 *load_options = NULL;
 161         }
 162         return ret;
 163 }
 164
 165 #if !CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
 166
 167 /**
 168  * copy_fdt() - Copy the device tree to a new location available to EFI
 169  *
 170  * The FDT is copied to a suitable location within the EFI memory map.
 171  * Additional 12 KiB are added to the space in case the device tree needs to be
 172  * expanded later with fdt_open_into().
 173  *
 174  * @fdtp:       On entry a pointer to the flattened device tree.
 175  *              On exit a pointer to the copy of the flattened device tree.
 176  *              FDT start
 177  * Return:      status code
 178  */
 179 static efi_status_t copy_fdt(void **fdtp)
 180 {
 181         unsigned long fdt_ram_start = -1L, fdt_pages;
 182         efi_status_t ret = 0;
 183         void *fdt, *new_fdt;
 184         u64 new_fdt_addr;
 185         uint fdt_size;
 186         int i;
 187
 188         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 189                 u64 ram_start = gd->bd->bi_dram[i].start;
 190                 u64 ram_size = gd->bd->bi_dram[i].size;
 191
 192                 if (!ram_size)
 193                         continue;
 194
 195                 if (ram_start < fdt_ram_start)
 196                         fdt_ram_start = ram_start;
 197         }
 198
 199         /*
 200          * Give us at least 12 KiB of breathing room in case the device tree
 201          * needs to be expanded later.
 202          */
 203         fdt = *fdtp;
 204         fdt_pages = efi_size_in_pages(fdt_totalsize(fdt) + 0x3000);
 205         fdt_size = fdt_pages << EFI_PAGE_SHIFT;
 206
 207         ret = efi_allocate_pages(EFI_ALLOCATE_ANY_PAGES,
 208                                  EFI_ACPI_RECLAIM_MEMORY, fdt_pages,
 209                                  &new_fdt_addr);
 210         if (ret != EFI_SUCCESS) {
 211                 log_err("ERROR: Failed to reserve space for FDT\n");
 212                 goto done;
 213         }
 214         new_fdt = (void *)(uintptr_t)new_fdt_addr;
 215         memcpy(new_fdt, fdt, fdt_totalsize(fdt));
 216         fdt_set_totalsize(new_fdt, fdt_size);
 217
 218         *fdtp = (void *)(uintptr_t)new_fdt_addr;
 219 done:
 220         return ret;
 221 }
 222
 223 /**
 224  * get_config_table() - get configuration table
 225  *
 226  * @guid:       GUID of the configuration table
 227  * Return:      pointer to configuration table or NULL
 228  */
 229 static void *get_config_table(const efi_guid_t *guid)
 230 {
 231         size_t i;
 232
 233         for (i = 0; i < systab.nr_tables; i++) {
 234                 if (!guidcmp(guid, &systab.tables[i].guid))
 235                         return systab.tables[i].table;
 236         }
 237         return NULL;
 238 }
 239
 240 #endif /* !CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE) */
 241
 242 /**
 243  * efi_install_fdt() - install device tree
 244  *
 245  * If fdt is not EFI_FDT_USE_INTERNAL, the device tree located at that memory
 246  * address will will be installed as configuration table, otherwise the device
 247  * tree located at the address indicated by environment variable fdt_addr or as
 248  * fallback fdtcontroladdr will be used.
 249  *
 250  * On architectures using ACPI tables device trees shall not be installed as
 251  * configuration table.
 252  *
 253  * @fdt:        address of device tree or EFI_FDT_USE_INTERNAL to use the
 254  *              the hardware device tree as indicated by environment variable
 255  *              fdt_addr or as fallback the internal device tree as indicated by
 256  *              the environment variable fdtcontroladdr
 257  * Return:      status code
 258  */
 259 efi_status_t efi_install_fdt(void *fdt)
 260 {
 261         /*
 262          * The EBBR spec requires that we have either an FDT or an ACPI table
 263          * but not both.
 264          */
 265 #if CONFIG_IS_ENABLED(GENERATE_ACPI_TABLE)
 266         if (fdt) {
 267                 log_warning("WARNING: Can't have ACPI table and device tree - ignoring DT.\n");
 268                 return EFI_SUCCESS;
 269         }
 270 #else
 271         struct bootm_headers img = { 0 };
 272         efi_status_t ret;
 273
 274         if (fdt == EFI_FDT_USE_INTERNAL) {
 275                 const char *fdt_opt;
 276                 uintptr_t fdt_addr;
 277
 278                 /* Look for device tree that is already installed */
 279                 if (get_config_table(&efi_guid_fdt))
 280                         return EFI_SUCCESS;
 281                 /* Check if there is a hardware device tree */
 282                 fdt_opt = env_get("fdt_addr");
 283                 /* Use our own device tree as fallback */
 284                 if (!fdt_opt) {
 285                         fdt_opt = env_get("fdtcontroladdr");
 286                         if (!fdt_opt) {
 287                                 log_err("ERROR: need device tree\n");
 288                                 return EFI_NOT_FOUND;
 289                         }
 290                 }
 291                 fdt_addr = hextoul(fdt_opt, NULL);
 292                 if (!fdt_addr) {
 293                         log_err("ERROR: invalid $fdt_addr or $fdtcontroladdr\n");
 294                         return EFI_LOAD_ERROR;
 295                 }
 296                 fdt = map_sysmem(fdt_addr, 0);
 297         }
 298
 299         /* Install device tree */
 300         if (fdt_check_header(fdt)) {
 301                 log_err("ERROR: invalid device tree\n");
 302                 return EFI_LOAD_ERROR;
 303         }
 304
 305         /* Prepare device tree for payload */
 306         ret = copy_fdt(&fdt);
 307         if (ret) {
 308                 log_err("ERROR: out of memory\n");
 309                 return EFI_OUT_OF_RESOURCES;
 310         }
 311
 312         if (image_setup_libfdt(&img, fdt, 0, NULL)) {
 313                 log_err("ERROR: failed to process device tree\n");
 314                 return EFI_LOAD_ERROR;
 315         }
 316
 317         /* Create memory reservations as indicated by the device tree */
 318         efi_carve_out_dt_rsv(fdt);
 319
 320         efi_try_purge_kaslr_seed(fdt);
 321
 322         if (CONFIG_IS_ENABLED(EFI_TCG2_PROTOCOL_MEASURE_DTB)) {
 323                 ret = efi_tcg2_measure_dtb(fdt);
 324                 if (ret == EFI_SECURITY_VIOLATION) {
 325                         log_err("ERROR: failed to measure DTB\n");
 326                         return ret;
 327                 }
 328         }
 329
 330         /* Install device tree as UEFI table */
 331         ret = efi_install_configuration_table(&efi_guid_fdt, fdt);
 332         if (ret != EFI_SUCCESS) {
 333                 log_err("ERROR: failed to install device tree\n");
 334                 return ret;
 335         }
 336 #endif /* GENERATE_ACPI_TABLE */
 337
 338         return EFI_SUCCESS;
 339 }
 340
 341 /**
 342  * do_bootefi_exec() - execute EFI binary
 343  *
 344  * The image indicated by @handle is started. When it returns the allocated
 345  * memory for the @load_options is freed.
 346  *
 347  * @handle:             handle of loaded image
 348  * @load_options:       load options
 349  * Return:              status code
 350  *
 351  * Load the EFI binary into a newly assigned memory unwinding the relocation
 352  * information, install the loaded image protocol, and call the binary.
 353  */
 354 static efi_status_t do_bootefi_exec(efi_handle_t handle, void *load_options)
 355 {
 356         efi_status_t ret;
 357         efi_uintn_t exit_data_size = 0;
 358         u16 *exit_data = NULL;
 359
 360         /* On ARM switch from EL3 or secure mode to EL2 or non-secure mode */
 361         switch_to_non_secure_mode();
 362
 363         /*
 364          * The UEFI standard requires that the watchdog timer is set to five
 365          * minutes when invoking an EFI boot option.
 366          *
 367          * Unified Extensible Firmware Interface (UEFI), version 2.7 Errata A
 368          * 7.5. Miscellaneous Boot Services - EFI_BOOT_SERVICES.SetWatchdogTimer
 369          */
 370         ret = efi_set_watchdog(300);
 371         if (ret != EFI_SUCCESS) {
 372                 log_err("ERROR: Failed to set watchdog timer\n");
 373                 goto out;
 374         }
 375
 376         /* Call our payload! */
 377         ret = EFI_CALL(efi_start_image(handle, &exit_data_size, &exit_data));
 378         if (ret != EFI_SUCCESS) {
 379                 log_err("## Application failed, r = %lu\n",
 380                         ret & ~EFI_ERROR_MASK);
 381                 if (exit_data) {
 382                         log_err("## %ls\n", exit_data);
 383                         efi_free_pool(exit_data);
 384                 }
 385         }
 386
 387         efi_restore_gd();
 388
 389 out:
 390         free(load_options);
 391
 392         if (IS_ENABLED(CONFIG_EFI_LOAD_FILE2_INITRD)) {
 393                 if (efi_initrd_deregister() != EFI_SUCCESS)
 394                         log_err("Failed to remove loadfile2 for initrd\n");
 395         }
 396
 397         /* Control is returned to U-Boot, disable EFI watchdog */
 398         efi_set_watchdog(0);
 399
 400         return ret;
 401 }
 402
 403 /**
 404  * do_efibootmgr() - execute EFI boot manager
 405  *
 406  * Return:      status code
 407  */
 408 static int do_efibootmgr(void)
 409 {
 410         efi_handle_t handle;
 411         efi_status_t ret;
 412         void *load_options;
 413
 414         ret = efi_bootmgr_load(&handle, &load_options);
 415         if (ret != EFI_SUCCESS) {
 416                 log_notice("EFI boot manager: Cannot load any image\n");
 417                 return CMD_RET_FAILURE;
 418         }
 419
 420         ret = do_bootefi_exec(handle, load_options);
 421
 422         if (ret != EFI_SUCCESS)
 423                 return CMD_RET_FAILURE;
 424
 425         return CMD_RET_SUCCESS;
 426 }
 427
 428 /**
 429  * do_bootefi_image() - execute EFI binary
 430  *
 431  * Set up memory image for the binary to be loaded, prepare device path, and
 432  * then call do_bootefi_exec() to execute it.
 433  *
 434  * @image_opt:  string with image start address
 435  * @size_opt:   string with image size or NULL
 436  * Return:      status code
 437  */
 438 static int do_bootefi_image(const char *image_opt, const char *size_opt)
 439 {
 440         void *image_buf;
 441         unsigned long addr, size;
 442         efi_status_t ret;
 443
 444 #ifdef CONFIG_CMD_BOOTEFI_HELLO
 445         if (!strcmp(image_opt, "hello")) {
 446                 image_buf = __efi_helloworld_begin;
 447                 size = __efi_helloworld_end - __efi_helloworld_begin;
 448                 efi_clear_bootdev();
 449         } else
 450 #endif
 451         {
 452                 addr = strtoul(image_opt, NULL, 16);
 453                 /* Check that a numeric value was passed */
 454                 if (!addr)
 455                         return CMD_RET_USAGE;
 456                 image_buf = map_sysmem(addr, 0);
 457
 458                 if (size_opt) {
 459                         size = strtoul(size_opt, NULL, 16);
 460                         if (!size)
 461                                 return CMD_RET_USAGE;
 462                         efi_clear_bootdev();
 463                 } else {
 464                         if (image_buf != image_addr) {
 465                                 log_err("No UEFI binary known at %s\n",
 466                                         image_opt);
 467                                 return CMD_RET_FAILURE;
 468                         }
 469                         size = image_size;
 470                 }
 471         }
 472         ret = efi_run_image(image_buf, size);
 473
 474         if (ret != EFI_SUCCESS)
 475                 return CMD_RET_FAILURE;
 476
 477         return CMD_RET_SUCCESS;
 478 }
 479
 480 /**
 481  * efi_run_image() - run loaded UEFI image
 482  *
 483  * @source_buffer:      memory address of the UEFI image
 484  * @source_size:        size of the UEFI image
 485  * Return:              status code
 486  */
 487 efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size)
 488 {
 489         efi_handle_t mem_handle = NULL, handle;
 490         struct efi_device_path *file_path = NULL;
 491         struct efi_device_path *msg_path;
 492         efi_status_t ret, ret2;
 493         u16 *load_options;
 494
 495         if (!bootefi_device_path || !bootefi_image_path) {
 496                 log_debug("Not loaded from disk\n");
 497                 /*
 498                  * Special case for efi payload not loaded from disk,
 499                  * such as 'bootefi hello' or for example payload
 500                  * loaded directly into memory via JTAG, etc:
 501                  */
 502                 file_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE,
 503                                             (uintptr_t)source_buffer,
 504                                             source_size);
 505                 /*
 506                  * Make sure that device for device_path exist
 507                  * in load_image(). Otherwise, shell and grub will fail.
 508                  */
 509                 ret = efi_install_multiple_protocol_interfaces(&mem_handle,
 510                                                                &efi_guid_device_path,
 511                                                                file_path, NULL);
 512                 if (ret != EFI_SUCCESS)
 513                         goto out;
 514                 msg_path = file_path;
 515         } else {
 516                 file_path = efi_dp_append(bootefi_device_path,
 517                                           bootefi_image_path);
 518                 msg_path = bootefi_image_path;
 519                 log_debug("Loaded from disk\n");
 520         }
 521
 522         log_info("Booting %pD\n", msg_path);
 523
 524         ret = EFI_CALL(efi_load_image(false, efi_root, file_path, source_buffer,
 525                                       source_size, &handle));
 526         if (ret != EFI_SUCCESS) {
 527                 log_err("Loading image failed\n");
 528                 goto out;
 529         }
 530
 531         /* Transfer environment variable as load options */
 532         ret = efi_env_set_load_options(handle, "bootargs", &load_options);
 533         if (ret != EFI_SUCCESS)
 534                 goto out;
 535
 536         ret = do_bootefi_exec(handle, load_options);
 537
 538 out:
 539         ret2 = efi_uninstall_multiple_protocol_interfaces(mem_handle,
 540                                                           &efi_guid_device_path,
 541                                                           file_path, NULL);
 542         efi_free_pool(file_path);
 543         return (ret != EFI_SUCCESS) ? ret : ret2;
 544 }
 545
 546 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
 547 static efi_status_t bootefi_run_prepare(const char *load_options_path,
 548                 struct efi_device_path *device_path,
 549                 struct efi_device_path *image_path,
 550                 struct efi_loaded_image_obj **image_objp,
 551                 struct efi_loaded_image **loaded_image_infop)
 552 {
 553         efi_status_t ret;
 554         u16 *load_options;
 555
 556         ret = efi_setup_loaded_image(device_path, image_path, image_objp,
 557                                      loaded_image_infop);
 558         if (ret != EFI_SUCCESS)
 559                 return ret;
 560
 561         /* Transfer environment variable as load options */
 562         return efi_env_set_load_options((efi_handle_t)*image_objp,
 563                                         load_options_path,
 564                                         &load_options);
 565 }
 566
 567 /**
 568  * bootefi_test_prepare() - prepare to run an EFI test
 569  *
 570  * Prepare to run a test as if it were provided by a loaded image.
 571  *
 572  * @image_objp:         pointer to be set to the loaded image handle
 573  * @loaded_image_infop: pointer to be set to the loaded image protocol
 574  * @path:               dummy file path used to construct the device path
 575  *                      set in the loaded image protocol
 576  * @load_options_path:  name of a U-Boot environment variable. Its value is
 577  *                      set as load options in the loaded image protocol.
 578  * Return:              status code
 579  */
 580 static efi_status_t bootefi_test_prepare
 581                 (struct efi_loaded_image_obj **image_objp,
 582                  struct efi_loaded_image **loaded_image_infop, const char *path,
 583                  const char *load_options_path)
 584 {
 585         efi_status_t ret;
 586
 587         /* Construct a dummy device path */
 588         bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, 0, 0);
 589         if (!bootefi_device_path)
 590                 return EFI_OUT_OF_RESOURCES;
 591
 592         bootefi_image_path = efi_dp_from_file(NULL, 0, path);
 593         if (!bootefi_image_path) {
 594                 ret = EFI_OUT_OF_RESOURCES;
 595                 goto failure;
 596         }
 597
 598         ret = bootefi_run_prepare(load_options_path, bootefi_device_path,
 599                                   bootefi_image_path, image_objp,
 600                                   loaded_image_infop);
 601         if (ret == EFI_SUCCESS)
 602                 return ret;
 603
 604 failure:
 605         efi_clear_bootdev();
 606         return ret;
 607 }
 608
 609 /**
 610  * bootefi_run_finish() - finish up after running an EFI test
 611  *
 612  * @loaded_image_info: Pointer to a struct which holds the loaded image info
 613  * @image_obj: Pointer to a struct which holds the loaded image object
 614  */
 615 static void bootefi_run_finish(struct efi_loaded_image_obj *image_obj,
 616                                struct efi_loaded_image *loaded_image_info)
 617 {
 618         efi_restore_gd();
 619         free(loaded_image_info->load_options);
 620         efi_delete_handle(&image_obj->header);
 621 }
 622
 623 /**
 624  * do_efi_selftest() - execute EFI selftest
 625  *
 626  * Return:      status code
 627  */
 628 static int do_efi_selftest(void)
 629 {
 630         struct efi_loaded_image_obj *image_obj;
 631         struct efi_loaded_image *loaded_image_info;
 632         efi_status_t ret;
 633
 634         ret = bootefi_test_prepare(&image_obj, &loaded_image_info,
 635                                    "\\selftest", "efi_selftest");
 636         if (ret != EFI_SUCCESS)
 637                 return CMD_RET_FAILURE;
 638
 639         /* Execute the test */
 640         ret = EFI_CALL(efi_selftest(&image_obj->header, &systab));
 641         bootefi_run_finish(image_obj, loaded_image_info);
 642
 643         return ret != EFI_SUCCESS;
 644 }
 645 #endif /* CONFIG_CMD_BOOTEFI_SELFTEST */
 646
 647 /**
 648  * do_bootefi() - execute `bootefi` command
 649  *
 650  * @cmdtp:      table entry describing command
 651  * @flag:       bitmap indicating how the command was invoked
 652  * @argc:       number of arguments
 653  * @argv:       command line arguments
 654  * Return:      status code
 655  */
 656 static int do_bootefi(struct cmd_tbl *cmdtp, int flag, int argc,
 657                       char *const argv[])
 658 {
 659         efi_status_t ret;
 660         char *img_addr, *img_size, *str_copy, *pos;
 661         void *fdt;
 662
 663         if (argc < 2)
 664                 return CMD_RET_USAGE;
 665
 666         /* Initialize EFI drivers */
 667         ret = efi_init_obj_list();
 668         if (ret != EFI_SUCCESS) {
 669                 log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n",
 670                         ret & ~EFI_ERROR_MASK);
 671                 return CMD_RET_FAILURE;
 672         }
 673
 674         if (argc > 2) {
 675                 uintptr_t fdt_addr;
 676
 677                 fdt_addr = hextoul(argv[2], NULL);
 678                 fdt = map_sysmem(fdt_addr, 0);
 679         } else {
 680                 fdt = EFI_FDT_USE_INTERNAL;
 681         }
 682         ret = efi_install_fdt(fdt);
 683         if (ret == EFI_INVALID_PARAMETER)
 684                 return CMD_RET_USAGE;
 685         else if (ret != EFI_SUCCESS)
 686                 return CMD_RET_FAILURE;
 687
 688         if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR)) {
 689                 if (!strcmp(argv[1], "bootmgr"))
 690                         return do_efibootmgr();
 691         }
 692 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
 693         if (!strcmp(argv[1], "selftest"))
 694                 return do_efi_selftest();
 695 #endif
 696         str_copy = strdup(argv[1]);
 697         if (!str_copy) {
 698                 log_err("Out of memory\n");
 699                 return CMD_RET_FAILURE;
 700         }
 701         pos = str_copy;
 702         img_addr = strsep(&pos, ":");
 703         img_size = strsep(&pos, ":");
 704         ret = do_bootefi_image(img_addr, img_size);
 705         free(str_copy);
 706
 707         return ret;
 708 }
 709
 710 #ifdef CONFIG_SYS_LONGHELP
 711 static char bootefi_help_text[] =
 712         "<image address>[:<image size>] [<fdt address>]\n"
 713         "  - boot EFI payload\n"
 714 #ifdef CONFIG_CMD_BOOTEFI_HELLO
 715         "bootefi hello\n"
 716         "  - boot a sample Hello World application stored within U-Boot\n"
 717 #endif
 718 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
 719         "bootefi selftest [fdt address]\n"
 720         "  - boot an EFI selftest application stored within U-Boot\n"
 721         "    Use environment variable efi_selftest to select a single test.\n"
 722         "    Use 'setenv efi_selftest list' to enumerate all tests.\n"
 723 #endif
 724 #ifdef CONFIG_CMD_BOOTEFI_BOOTMGR
 725         "bootefi bootmgr [fdt address]\n"
 726         "  - load and boot EFI payload based on BootOrder/BootXXXX variables.\n"
 727         "\n"
 728         "    If specified, the device tree located at <fdt address> gets\n"
 729         "    exposed as EFI configuration table.\n"
 730 #endif
 731         ;
 732 #endif
 733
 734 U_BOOT_CMD(
 735         bootefi, 4, 0, do_bootefi,
 736         "Boots an EFI payload from memory",
 737         bootefi_help_text
 738 );