common/bootm.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2009
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  */
   6
   7 #ifndef USE_HOSTCC
   8 #include <common.h>
   9 #include <bootstage.h>
  10 #include <cpu_func.h>
  11 #include <env.h>
  12 #include <errno.h>
  13 #include <fdt_support.h>
  14 #include <irq_func.h>
  15 #include <lmb.h>
  16 #include <log.h>
  17 #include <malloc.h>
  18 #include <mapmem.h>
  19 #include <net.h>
  20 #include <asm/cache.h>
  21 #include <asm/io.h>
  22 #if defined(CONFIG_CMD_USB)
  23 #include <usb.h>
  24 #endif
  25 #else
  26 #include "mkimage.h"
  27 #endif
  28
  29 #include <command.h>
  30 #include <bootm.h>
  31 #include <image.h>
  32
  33 #ifndef CONFIG_SYS_BOOTM_LEN
  34 /* use 8MByte as default max gunzip size */
  35 #define CONFIG_SYS_BOOTM_LEN    0x800000
  36 #endif
  37
  38 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  39
  40 #ifndef USE_HOSTCC
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
  45
  46 static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
  47                                    char *const argv[], bootm_headers_t *images,
  48                                    ulong *os_data, ulong *os_len);
  49
  50 __weak void board_quiesce_devices(void)
  51 {
  52 }
  53
  54 #ifdef CONFIG_LMB
  55 static void boot_start_lmb(bootm_headers_t *images)
  56 {
  57         ulong           mem_start;
  58         phys_size_t     mem_size;
  59
  60         mem_start = env_get_bootm_low();
  61         mem_size = env_get_bootm_size();
  62
  63         lmb_init_and_reserve_range(&images->lmb, (phys_addr_t)mem_start,
  64                                    mem_size, NULL);
  65 }
  66 #else
  67 #define lmb_reserve(lmb, base, size)
  68 static inline void boot_start_lmb(bootm_headers_t *images) { }
  69 #endif
  70
  71 static int bootm_start(struct cmd_tbl *cmdtp, int flag, int argc,
  72                        char *const argv[])
  73 {
  74         memset((void *)&images, 0, sizeof(images));
  75         images.verify = env_get_yesno("verify");
  76
  77         boot_start_lmb(&images);
  78
  79         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  80         images.state = BOOTM_STATE_START;
  81
  82         return 0;
  83 }
  84
  85 static int bootm_find_os(struct cmd_tbl *cmdtp, int flag, int argc,
  86                          char *const argv[])
  87 {
  88         const void *os_hdr;
  89         bool ep_found = false;
  90         int ret;
  91
  92         /* get kernel image header, start address and length */
  93         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  94                         &images, &images.os.image_start, &images.os.image_len);
  95         if (images.os.image_len == 0) {
  96                 puts("ERROR: can't get kernel image!\n");
  97                 return 1;
  98         }
  99
 100         /* get image parameters */
 101         switch (genimg_get_format(os_hdr)) {
 102 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 103         case IMAGE_FORMAT_LEGACY:
 104                 images.os.type = image_get_type(os_hdr);
 105                 images.os.comp = image_get_comp(os_hdr);
 106                 images.os.os = image_get_os(os_hdr);
 107
 108                 images.os.end = image_get_image_end(os_hdr);
 109                 images.os.load = image_get_load(os_hdr);
 110                 images.os.arch = image_get_arch(os_hdr);
 111                 break;
 112 #endif
 113 #if IMAGE_ENABLE_FIT
 114         case IMAGE_FORMAT_FIT:
 115                 if (fit_image_get_type(images.fit_hdr_os,
 116                                        images.fit_noffset_os,
 117                                        &images.os.type)) {
 118                         puts("Can't get image type!\n");
 119                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 120                         return 1;
 121                 }
 122
 123                 if (fit_image_get_comp(images.fit_hdr_os,
 124                                        images.fit_noffset_os,
 125                                        &images.os.comp)) {
 126                         puts("Can't get image compression!\n");
 127                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 128                         return 1;
 129                 }
 130
 131                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 132                                      &images.os.os)) {
 133                         puts("Can't get image OS!\n");
 134                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 135                         return 1;
 136                 }
 137
 138                 if (fit_image_get_arch(images.fit_hdr_os,
 139                                        images.fit_noffset_os,
 140                                        &images.os.arch)) {
 141                         puts("Can't get image ARCH!\n");
 142                         return 1;
 143                 }
 144
 145                 images.os.end = fit_get_end(images.fit_hdr_os);
 146
 147                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 148                                        &images.os.load)) {
 149                         puts("Can't get image load address!\n");
 150                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 151                         return 1;
 152                 }
 153                 break;
 154 #endif
 155 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 156         case IMAGE_FORMAT_ANDROID:
 157                 images.os.type = IH_TYPE_KERNEL;
 158                 images.os.comp = android_image_get_kcomp(os_hdr);
 159                 images.os.os = IH_OS_LINUX;
 160
 161                 images.os.end = android_image_get_end(os_hdr);
 162                 images.os.load = android_image_get_kload(os_hdr);
 163                 images.ep = images.os.load;
 164                 ep_found = true;
 165                 break;
 166 #endif
 167         default:
 168                 puts("ERROR: unknown image format type!\n");
 169                 return 1;
 170         }
 171
 172         /* If we have a valid setup.bin, we will use that for entry (x86) */
 173         if (images.os.arch == IH_ARCH_I386 ||
 174             images.os.arch == IH_ARCH_X86_64) {
 175                 ulong len;
 176
 177                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 178                 if (ret < 0 && ret != -ENOENT) {
 179                         puts("Could not find a valid setup.bin for x86\n");
 180                         return 1;
 181                 }
 182                 /* Kernel entry point is the setup.bin */
 183         } else if (images.legacy_hdr_valid) {
 184                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 185 #if IMAGE_ENABLE_FIT
 186         } else if (images.fit_uname_os) {
 187                 int ret;
 188
 189                 ret = fit_image_get_entry(images.fit_hdr_os,
 190                                           images.fit_noffset_os, &images.ep);
 191                 if (ret) {
 192                         puts("Can't get entry point property!\n");
 193                         return 1;
 194                 }
 195 #endif
 196         } else if (!ep_found) {
 197                 puts("Could not find kernel entry point!\n");
 198                 return 1;
 199         }
 200
 201         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 202                 if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
 203                     images.os.arch == IH_ARCH_ARM64) {
 204                         ulong image_addr;
 205                         ulong image_size;
 206
 207                         ret = booti_setup(images.os.image_start, &image_addr,
 208                                           &image_size, true);
 209                         if (ret != 0)
 210                                 return 1;
 211
 212                         images.os.type = IH_TYPE_KERNEL;
 213                         images.os.load = image_addr;
 214                         images.ep = image_addr;
 215                 } else {
 216                         images.os.load = images.os.image_start;
 217                         images.ep += images.os.image_start;
 218                 }
 219         }
 220
 221         images.os.start = map_to_sysmem(os_hdr);
 222
 223         return 0;
 224 }
 225
 226 /**
 227  * bootm_find_images - wrapper to find and locate various images
 228  * @flag: Ignored Argument
 229  * @argc: command argument count
 230  * @argv: command argument list
 231  * @start: OS image start address
 232  * @size: OS image size
 233  *
 234  * boot_find_images() will attempt to load an available ramdisk,
 235  * flattened device tree, as well as specifically marked
 236  * "loadable" images (loadables are FIT only)
 237  *
 238  * Note: bootm_find_images will skip an image if it is not found
 239  *
 240  * @return:
 241  *     0, if all existing images were loaded correctly
 242  *     1, if an image is found but corrupted, or invalid
 243  */
 244 int bootm_find_images(int flag, int argc, char *const argv[], ulong start,
 245                       ulong size)
 246 {
 247         int ret;
 248
 249         /* find ramdisk */
 250         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 251                                &images.rd_start, &images.rd_end);
 252         if (ret) {
 253                 puts("Ramdisk image is corrupt or invalid\n");
 254                 return 1;
 255         }
 256
 257         /* check if ramdisk overlaps OS image */
 258         if (images.rd_start && (((ulong)images.rd_start >= start &&
 259                                  (ulong)images.rd_start <= start + size) ||
 260                                 ((ulong)images.rd_end >= start &&
 261                                  (ulong)images.rd_end <= start + size))) {
 262                 printf("ERROR: RD image overlaps OS image (OS=0x%lx..0x%lx)\n",
 263                        start, start + size);
 264                 return 1;
 265         }
 266
 267 #if IMAGE_ENABLE_OF_LIBFDT
 268         /* find flattened device tree */
 269         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 270                            &images.ft_addr, &images.ft_len);
 271         if (ret) {
 272                 puts("Could not find a valid device tree\n");
 273                 return 1;
 274         }
 275
 276         /* check if FDT overlaps OS image */
 277         if (images.ft_addr &&
 278             (((ulong)images.ft_addr >= start &&
 279               (ulong)images.ft_addr <= start + size) ||
 280              ((ulong)images.ft_addr + images.ft_len >= start &&
 281               (ulong)images.ft_addr + images.ft_len <= start + size))) {
 282                 printf("ERROR: FDT image overlaps OS image (OS=0x%lx..0x%lx)\n",
 283                        start, start + size);
 284                 return 1;
 285         }
 286
 287         if (CONFIG_IS_ENABLED(CMD_FDT))
 288                 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
 289 #endif
 290
 291 #if IMAGE_ENABLE_FIT
 292 #if defined(CONFIG_FPGA)
 293         /* find bitstreams */
 294         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 295                             NULL, NULL);
 296         if (ret) {
 297                 printf("FPGA image is corrupted or invalid\n");
 298                 return 1;
 299         }
 300 #endif
 301
 302         /* find all of the loadables */
 303         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 304                                NULL, NULL);
 305         if (ret) {
 306                 printf("Loadable(s) is corrupt or invalid\n");
 307                 return 1;
 308         }
 309 #endif
 310
 311         return 0;
 312 }
 313
 314 static int bootm_find_other(struct cmd_tbl *cmdtp, int flag, int argc,
 315                             char *const argv[])
 316 {
 317         if (((images.os.type == IH_TYPE_KERNEL) ||
 318              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 319              (images.os.type == IH_TYPE_MULTI)) &&
 320             (images.os.os == IH_OS_LINUX ||
 321                  images.os.os == IH_OS_VXWORKS))
 322                 return bootm_find_images(flag, argc, argv, 0, 0);
 323
 324         return 0;
 325 }
 326 #endif /* USE_HOSTC */
 327
 328 #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
 329 /**
 330  * handle_decomp_error() - display a decompression error
 331  *
 332  * This function tries to produce a useful message. In the case where the
 333  * uncompressed size is the same as the available space, we can assume that
 334  * the image is too large for the buffer.
 335  *
 336  * @comp_type:          Compression type being used (IH_COMP_...)
 337  * @uncomp_size:        Number of bytes uncompressed
 338  * @ret:                errno error code received from compression library
 339  * @return Appropriate BOOTM_ERR_ error code
 340  */
 341 static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret)
 342 {
 343         const char *name = genimg_get_comp_name(comp_type);
 344
 345         /* ENOSYS means unimplemented compression type, don't reset. */
 346         if (ret == -ENOSYS)
 347                 return BOOTM_ERR_UNIMPLEMENTED;
 348
 349         if (uncomp_size >= CONFIG_SYS_BOOTM_LEN)
 350                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 351         else
 352                 printf("%s: uncompress error %d\n", name, ret);
 353
 354         /*
 355          * The decompression routines are now safe, so will not write beyond
 356          * their bounds. Probably it is not necessary to reset, but maintain
 357          * the current behaviour for now.
 358          */
 359         printf("Must RESET board to recover\n");
 360 #ifndef USE_HOSTCC
 361         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 362 #endif
 363
 364         return BOOTM_ERR_RESET;
 365 }
 366 #endif
 367
 368 #ifndef USE_HOSTCC
 369 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
 370 {
 371         image_info_t os = images->os;
 372         ulong load = os.load;
 373         ulong load_end;
 374         ulong blob_start = os.start;
 375         ulong blob_end = os.end;
 376         ulong image_start = os.image_start;
 377         ulong image_len = os.image_len;
 378         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 379         bool no_overlap;
 380         void *load_buf, *image_buf;
 381         int err;
 382
 383         load_buf = map_sysmem(load, 0);
 384         image_buf = map_sysmem(os.image_start, image_len);
 385         err = image_decomp(os.comp, load, os.image_start, os.type,
 386                            load_buf, image_buf, image_len,
 387                            CONFIG_SYS_BOOTM_LEN, &load_end);
 388         if (err) {
 389                 err = handle_decomp_error(os.comp, load_end - load, err);
 390                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 391                 return err;
 392         }
 393
 394         flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
 395
 396         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 397         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 398
 399         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 400
 401         if (!no_overlap && load < blob_end && load_end > blob_start) {
 402                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 403                       blob_start, blob_end);
 404                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 405                       load_end);
 406
 407                 /* Check what type of image this is. */
 408                 if (images->legacy_hdr_valid) {
 409                         if (image_get_type(&images->legacy_hdr_os_copy)
 410                                         == IH_TYPE_MULTI)
 411                                 puts("WARNING: legacy format multi component image overwritten\n");
 412                         return BOOTM_ERR_OVERLAP;
 413                 } else {
 414                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 415                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 416                         return BOOTM_ERR_RESET;
 417                 }
 418         }
 419
 420         lmb_reserve(&images->lmb, images->os.load, (load_end -
 421                                                     images->os.load));
 422         return 0;
 423 }
 424
 425 /**
 426  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 427  *
 428  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 429  *      enabled)
 430  */
 431 ulong bootm_disable_interrupts(void)
 432 {
 433         ulong iflag;
 434
 435         /*
 436          * We have reached the point of no return: we are going to
 437          * overwrite all exception vector code, so we cannot easily
 438          * recover from any failures any more...
 439          */
 440         iflag = disable_interrupts();
 441 #ifdef CONFIG_NETCONSOLE
 442         /* Stop the ethernet stack if NetConsole could have left it up */
 443         eth_halt();
 444 # ifndef CONFIG_DM_ETH
 445         eth_unregister(eth_get_dev());
 446 # endif
 447 #endif
 448
 449 #if defined(CONFIG_CMD_USB)
 450         /*
 451          * turn off USB to prevent the host controller from writing to the
 452          * SDRAM while Linux is booting. This could happen (at least for OHCI
 453          * controller), because the HCCA (Host Controller Communication Area)
 454          * lies within the SDRAM and the host controller writes continously to
 455          * this area (as busmaster!). The HccaFrameNumber is for example
 456          * updated every 1 ms within the HCCA structure in SDRAM! For more
 457          * details see the OpenHCI specification.
 458          */
 459         usb_stop();
 460 #endif
 461         return iflag;
 462 }
 463
 464 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 465
 466 #define CONSOLE_ARG     "console="
 467 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 468
 469 static void fixup_silent_linux(void)
 470 {
 471         char *buf;
 472         const char *env_val;
 473         char *cmdline = env_get("bootargs");
 474         int want_silent;
 475
 476         /*
 477          * Only fix cmdline when requested. The environment variable can be:
 478          *
 479          *      no - we never fixup
 480          *      yes - we always fixup
 481          *      unset - we rely on the console silent flag
 482          */
 483         want_silent = env_get_yesno("silent_linux");
 484         if (want_silent == 0)
 485                 return;
 486         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 487                 return;
 488
 489         debug("before silent fix-up: %s\n", cmdline);
 490         if (cmdline && (cmdline[0] != '\0')) {
 491                 char *start = strstr(cmdline, CONSOLE_ARG);
 492
 493                 /* Allocate space for maximum possible new command line */
 494                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 495                 if (!buf) {
 496                         debug("%s: out of memory\n", __func__);
 497                         return;
 498                 }
 499
 500                 if (start) {
 501                         char *end = strchr(start, ' ');
 502                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 503
 504                         strncpy(buf, cmdline, num_start_bytes);
 505                         if (end)
 506                                 strcpy(buf + num_start_bytes, end);
 507                         else
 508                                 buf[num_start_bytes] = '\0';
 509                 } else {
 510                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 511                 }
 512                 env_val = buf;
 513         } else {
 514                 buf = NULL;
 515                 env_val = CONSOLE_ARG;
 516         }
 517
 518         env_set("bootargs", env_val);
 519         debug("after silent fix-up: %s\n", env_val);
 520         free(buf);
 521 }
 522 #endif /* CONFIG_SILENT_CONSOLE */
 523
 524 /**
 525  * Execute selected states of the bootm command.
 526  *
 527  * Note the arguments to this state must be the first argument, Any 'bootm'
 528  * or sub-command arguments must have already been taken.
 529  *
 530  * Note that if states contains more than one flag it MUST contain
 531  * BOOTM_STATE_START, since this handles and consumes the command line args.
 532  *
 533  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 534  * functions we store the return value of in 'ret' may use a negative return
 535  * value, without special handling.
 536  *
 537  * @param cmdtp         Pointer to bootm command table entry
 538  * @param flag          Command flags (CMD_FLAG_...)
 539  * @param argc          Number of subcommand arguments (0 = no arguments)
 540  * @param argv          Arguments
 541  * @param states        Mask containing states to run (BOOTM_STATE_...)
 542  * @param images        Image header information
 543  * @param boot_progress 1 to show boot progress, 0 to not do this
 544  * @return 0 if ok, something else on error. Some errors will cause this
 545  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 546  *      then the intent is to boot an OS, so this function will not return
 547  *      unless the image type is standalone.
 548  */
 549 int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
 550                     char *const argv[], int states, bootm_headers_t *images,
 551                     int boot_progress)
 552 {
 553         boot_os_fn *boot_fn;
 554         ulong iflag = 0;
 555         int ret = 0, need_boot_fn;
 556
 557         images->state |= states;
 558
 559         /*
 560          * Work through the states and see how far we get. We stop on
 561          * any error.
 562          */
 563         if (states & BOOTM_STATE_START)
 564                 ret = bootm_start(cmdtp, flag, argc, argv);
 565
 566         if (!ret && (states & BOOTM_STATE_FINDOS))
 567                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 568
 569         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 570                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 571
 572         /* Load the OS */
 573         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 574                 iflag = bootm_disable_interrupts();
 575                 ret = bootm_load_os(images, 0);
 576                 if (ret && ret != BOOTM_ERR_OVERLAP)
 577                         goto err;
 578                 else if (ret == BOOTM_ERR_OVERLAP)
 579                         ret = 0;
 580         }
 581
 582         /* Relocate the ramdisk */
 583 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 584         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 585                 ulong rd_len = images->rd_end - images->rd_start;
 586
 587                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 588                         rd_len, &images->initrd_start, &images->initrd_end);
 589                 if (!ret) {
 590                         env_set_hex("initrd_start", images->initrd_start);
 591                         env_set_hex("initrd_end", images->initrd_end);
 592                 }
 593         }
 594 #endif
 595 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
 596         if (!ret && (states & BOOTM_STATE_FDT)) {
 597                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 598                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 599                                         &images->ft_len);
 600         }
 601 #endif
 602
 603         /* From now on, we need the OS boot function */
 604         if (ret)
 605                 return ret;
 606         boot_fn = bootm_os_get_boot_func(images->os.os);
 607         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 608                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 609                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 610         if (boot_fn == NULL && need_boot_fn) {
 611                 if (iflag)
 612                         enable_interrupts();
 613                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 614                        genimg_get_os_name(images->os.os), images->os.os);
 615                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 616                 return 1;
 617         }
 618
 619
 620         /* Call various other states that are not generally used */
 621         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 622                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 623         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 624                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 625         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 626 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 627                 if (images->os.os == IH_OS_LINUX)
 628                         fixup_silent_linux();
 629 #endif
 630                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 631         }
 632
 633 #ifdef CONFIG_TRACE
 634         /* Pretend to run the OS, then run a user command */
 635         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 636                 char *cmd_list = env_get("fakegocmd");
 637
 638                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 639                                 images, boot_fn);
 640                 if (!ret && cmd_list)
 641                         ret = run_command_list(cmd_list, -1, flag);
 642         }
 643 #endif
 644
 645         /* Check for unsupported subcommand. */
 646         if (ret) {
 647                 puts("subcommand not supported\n");
 648                 return ret;
 649         }
 650
 651         /* Now run the OS! We hope this doesn't return */
 652         if (!ret && (states & BOOTM_STATE_OS_GO))
 653                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 654                                 images, boot_fn);
 655
 656         /* Deal with any fallout */
 657 err:
 658         if (iflag)
 659                 enable_interrupts();
 660
 661         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 662                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 663         else if (ret == BOOTM_ERR_RESET)
 664                 do_reset(cmdtp, flag, argc, argv);
 665
 666         return ret;
 667 }
 668
 669 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 670 /**
 671  * image_get_kernel - verify legacy format kernel image
 672  * @img_addr: in RAM address of the legacy format image to be verified
 673  * @verify: data CRC verification flag
 674  *
 675  * image_get_kernel() verifies legacy image integrity and returns pointer to
 676  * legacy image header if image verification was completed successfully.
 677  *
 678  * returns:
 679  *     pointer to a legacy image header if valid image was found
 680  *     otherwise return NULL
 681  */
 682 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 683 {
 684         image_header_t *hdr = (image_header_t *)img_addr;
 685
 686         if (!image_check_magic(hdr)) {
 687                 puts("Bad Magic Number\n");
 688                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 689                 return NULL;
 690         }
 691         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 692
 693         if (!image_check_hcrc(hdr)) {
 694                 puts("Bad Header Checksum\n");
 695                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 696                 return NULL;
 697         }
 698
 699         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 700         image_print_contents(hdr);
 701
 702         if (verify) {
 703                 puts("   Verifying Checksum ... ");
 704                 if (!image_check_dcrc(hdr)) {
 705                         printf("Bad Data CRC\n");
 706                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 707                         return NULL;
 708                 }
 709                 puts("OK\n");
 710         }
 711         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 712
 713         if (!image_check_target_arch(hdr)) {
 714                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 715                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 716                 return NULL;
 717         }
 718         return hdr;
 719 }
 720 #endif
 721
 722 /**
 723  * boot_get_kernel - find kernel image
 724  * @os_data: pointer to a ulong variable, will hold os data start address
 725  * @os_len: pointer to a ulong variable, will hold os data length
 726  *
 727  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 728  * and locates kernel data.
 729  *
 730  * returns:
 731  *     pointer to image header if valid image was found, plus kernel start
 732  *     address and length, otherwise NULL
 733  */
 734 static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
 735                                    char *const argv[], bootm_headers_t *images,
 736                                    ulong *os_data, ulong *os_len)
 737 {
 738 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 739         image_header_t  *hdr;
 740 #endif
 741         ulong           img_addr;
 742         const void *buf;
 743         const char      *fit_uname_config = NULL;
 744         const char      *fit_uname_kernel = NULL;
 745 #if IMAGE_ENABLE_FIT
 746         int             os_noffset;
 747 #endif
 748
 749         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 750                                               &fit_uname_config,
 751                                               &fit_uname_kernel);
 752
 753         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 754
 755         /* check image type, for FIT images get FIT kernel node */
 756         *os_data = *os_len = 0;
 757         buf = map_sysmem(img_addr, 0);
 758         switch (genimg_get_format(buf)) {
 759 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 760         case IMAGE_FORMAT_LEGACY:
 761                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 762                        img_addr);
 763                 hdr = image_get_kernel(img_addr, images->verify);
 764                 if (!hdr)
 765                         return NULL;
 766                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 767
 768                 /* get os_data and os_len */
 769                 switch (image_get_type(hdr)) {
 770                 case IH_TYPE_KERNEL:
 771                 case IH_TYPE_KERNEL_NOLOAD:
 772                         *os_data = image_get_data(hdr);
 773                         *os_len = image_get_data_size(hdr);
 774                         break;
 775                 case IH_TYPE_MULTI:
 776                         image_multi_getimg(hdr, 0, os_data, os_len);
 777                         break;
 778                 case IH_TYPE_STANDALONE:
 779                         *os_data = image_get_data(hdr);
 780                         *os_len = image_get_data_size(hdr);
 781                         break;
 782                 default:
 783                         printf("Wrong Image Type for %s command\n",
 784                                cmdtp->name);
 785                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 786                         return NULL;
 787                 }
 788
 789                 /*
 790                  * copy image header to allow for image overwrites during
 791                  * kernel decompression.
 792                  */
 793                 memmove(&images->legacy_hdr_os_copy, hdr,
 794                         sizeof(image_header_t));
 795
 796                 /* save pointer to image header */
 797                 images->legacy_hdr_os = hdr;
 798
 799                 images->legacy_hdr_valid = 1;
 800                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 801                 break;
 802 #endif
 803 #if IMAGE_ENABLE_FIT
 804         case IMAGE_FORMAT_FIT:
 805                 os_noffset = fit_image_load(images, img_addr,
 806                                 &fit_uname_kernel, &fit_uname_config,
 807                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 808                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 809                                 FIT_LOAD_IGNORED, os_data, os_len);
 810                 if (os_noffset < 0)
 811                         return NULL;
 812
 813                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 814                 images->fit_uname_os = fit_uname_kernel;
 815                 images->fit_uname_cfg = fit_uname_config;
 816                 images->fit_noffset_os = os_noffset;
 817                 break;
 818 #endif
 819 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 820         case IMAGE_FORMAT_ANDROID:
 821                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 822                 if (android_image_get_kernel(buf, images->verify,
 823                                              os_data, os_len))
 824                         return NULL;
 825                 break;
 826 #endif
 827         default:
 828                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 829                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 830                 return NULL;
 831         }
 832
 833         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 834               *os_data, *os_len, *os_len);
 835
 836         return buf;
 837 }
 838
 839 /**
 840  * switch_to_non_secure_mode() - switch to non-secure mode
 841  *
 842  * This routine is overridden by architectures requiring this feature.
 843  */
 844 void __weak switch_to_non_secure_mode(void)
 845 {
 846 }
 847
 848 #else /* USE_HOSTCC */
 849
 850 #if defined(CONFIG_FIT_SIGNATURE)
 851 static int bootm_host_load_image(const void *fit, int req_image_type,
 852                                  int cfg_noffset)
 853 {
 854         const char *fit_uname_config = NULL;
 855         ulong data, len;
 856         bootm_headers_t images;
 857         int noffset;
 858         ulong load_end;
 859         uint8_t image_type;
 860         uint8_t imape_comp;
 861         void *load_buf;
 862         int ret;
 863
 864         fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
 865         memset(&images, '\0', sizeof(images));
 866         images.verify = 1;
 867         noffset = fit_image_load(&images, (ulong)fit,
 868                 NULL, &fit_uname_config,
 869                 IH_ARCH_DEFAULT, req_image_type, -1,
 870                 FIT_LOAD_IGNORED, &data, &len);
 871         if (noffset < 0)
 872                 return noffset;
 873         if (fit_image_get_type(fit, noffset, &image_type)) {
 874                 puts("Can't get image type!\n");
 875                 return -EINVAL;
 876         }
 877
 878         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 879                 puts("Can't get image compression!\n");
 880                 return -EINVAL;
 881         }
 882
 883         /* Allow the image to expand by a factor of 4, should be safe */
 884         load_buf = malloc((1 << 20) + len * 4);
 885         ret = image_decomp(imape_comp, 0, data, image_type, load_buf,
 886                            (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 887                            &load_end);
 888         free(load_buf);
 889
 890         if (ret) {
 891                 ret = handle_decomp_error(imape_comp, load_end - 0, ret);
 892                 if (ret != BOOTM_ERR_UNIMPLEMENTED)
 893                         return ret;
 894         }
 895
 896         return 0;
 897 }
 898
 899 int bootm_host_load_images(const void *fit, int cfg_noffset)
 900 {
 901         static uint8_t image_types[] = {
 902                 IH_TYPE_KERNEL,
 903                 IH_TYPE_FLATDT,
 904                 IH_TYPE_RAMDISK,
 905         };
 906         int err = 0;
 907         int i;
 908
 909         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 910                 int ret;
 911
 912                 ret = bootm_host_load_image(fit, image_types[i], cfg_noffset);
 913                 if (!err && ret && ret != -ENOENT)
 914                         err = ret;
 915         }
 916
 917         /* Return the first error we found */
 918         return err;
 919 }
 920 #endif
 921
 922 #endif /* ndef USE_HOSTCC */