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                                 ((ulong)images.rd_start < start &&
 263                                  (ulong)images.rd_end >= start + size))) {
 264                 printf("ERROR: RD image overlaps OS image (OS=0x%lx..0x%lx)\n",
 265                        start, start + size);
 266                 return 1;
 267         }
 268
 269 #if IMAGE_ENABLE_OF_LIBFDT
 270         /* find flattened device tree */
 271         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 272                            &images.ft_addr, &images.ft_len);
 273         if (ret) {
 274                 puts("Could not find a valid device tree\n");
 275                 return 1;
 276         }
 277
 278         /* check if FDT overlaps OS image */
 279         if (images.ft_addr &&
 280             (((ulong)images.ft_addr >= start &&
 281               (ulong)images.ft_addr <= start + size) ||
 282              ((ulong)images.ft_addr + images.ft_len >= start &&
 283               (ulong)images.ft_addr + images.ft_len <= start + size))) {
 284                 printf("ERROR: FDT image overlaps OS image (OS=0x%lx..0x%lx)\n",
 285                        start, start + size);
 286                 return 1;
 287         }
 288
 289         if (CONFIG_IS_ENABLED(CMD_FDT))
 290                 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
 291 #endif
 292
 293 #if IMAGE_ENABLE_FIT
 294 #if defined(CONFIG_FPGA)
 295         /* find bitstreams */
 296         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 297                             NULL, NULL);
 298         if (ret) {
 299                 printf("FPGA image is corrupted or invalid\n");
 300                 return 1;
 301         }
 302 #endif
 303
 304         /* find all of the loadables */
 305         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 306                                NULL, NULL);
 307         if (ret) {
 308                 printf("Loadable(s) is corrupt or invalid\n");
 309                 return 1;
 310         }
 311 #endif
 312
 313         return 0;
 314 }
 315
 316 static int bootm_find_other(struct cmd_tbl *cmdtp, int flag, int argc,
 317                             char *const argv[])
 318 {
 319         if (((images.os.type == IH_TYPE_KERNEL) ||
 320              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 321              (images.os.type == IH_TYPE_MULTI)) &&
 322             (images.os.os == IH_OS_LINUX ||
 323                  images.os.os == IH_OS_VXWORKS))
 324                 return bootm_find_images(flag, argc, argv, 0, 0);
 325
 326         return 0;
 327 }
 328 #endif /* USE_HOSTC */
 329
 330 #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
 331 /**
 332  * handle_decomp_error() - display a decompression error
 333  *
 334  * This function tries to produce a useful message. In the case where the
 335  * uncompressed size is the same as the available space, we can assume that
 336  * the image is too large for the buffer.
 337  *
 338  * @comp_type:          Compression type being used (IH_COMP_...)
 339  * @uncomp_size:        Number of bytes uncompressed
 340  * @ret:                errno error code received from compression library
 341  * @return Appropriate BOOTM_ERR_ error code
 342  */
 343 static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret)
 344 {
 345         const char *name = genimg_get_comp_name(comp_type);
 346
 347         /* ENOSYS means unimplemented compression type, don't reset. */
 348         if (ret == -ENOSYS)
 349                 return BOOTM_ERR_UNIMPLEMENTED;
 350
 351         if (uncomp_size >= CONFIG_SYS_BOOTM_LEN)
 352                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 353         else
 354                 printf("%s: uncompress error %d\n", name, ret);
 355
 356         /*
 357          * The decompression routines are now safe, so will not write beyond
 358          * their bounds. Probably it is not necessary to reset, but maintain
 359          * the current behaviour for now.
 360          */
 361         printf("Must RESET board to recover\n");
 362 #ifndef USE_HOSTCC
 363         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 364 #endif
 365
 366         return BOOTM_ERR_RESET;
 367 }
 368 #endif
 369
 370 #ifndef USE_HOSTCC
 371 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
 372 {
 373         image_info_t os = images->os;
 374         ulong load = os.load;
 375         ulong load_end;
 376         ulong blob_start = os.start;
 377         ulong blob_end = os.end;
 378         ulong image_start = os.image_start;
 379         ulong image_len = os.image_len;
 380         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 381         bool no_overlap;
 382         void *load_buf, *image_buf;
 383         int err;
 384
 385         load_buf = map_sysmem(load, 0);
 386         image_buf = map_sysmem(os.image_start, image_len);
 387         err = image_decomp(os.comp, load, os.image_start, os.type,
 388                            load_buf, image_buf, image_len,
 389                            CONFIG_SYS_BOOTM_LEN, &load_end);
 390         if (err) {
 391                 err = handle_decomp_error(os.comp, load_end - load, err);
 392                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 393                 return err;
 394         }
 395         /* We need the decompressed image size in the next steps */
 396         images->os.image_len = load_end - load;
 397
 398         flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
 399
 400         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 401         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 402
 403         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 404
 405         if (!no_overlap && load < blob_end && load_end > blob_start) {
 406                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 407                       blob_start, blob_end);
 408                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 409                       load_end);
 410
 411                 /* Check what type of image this is. */
 412                 if (images->legacy_hdr_valid) {
 413                         if (image_get_type(&images->legacy_hdr_os_copy)
 414                                         == IH_TYPE_MULTI)
 415                                 puts("WARNING: legacy format multi component image overwritten\n");
 416                         return BOOTM_ERR_OVERLAP;
 417                 } else {
 418                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 419                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 420                         return BOOTM_ERR_RESET;
 421                 }
 422         }
 423
 424         lmb_reserve(&images->lmb, images->os.load, (load_end -
 425                                                     images->os.load));
 426         return 0;
 427 }
 428
 429 /**
 430  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 431  *
 432  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 433  *      enabled)
 434  */
 435 ulong bootm_disable_interrupts(void)
 436 {
 437         ulong iflag;
 438
 439         /*
 440          * We have reached the point of no return: we are going to
 441          * overwrite all exception vector code, so we cannot easily
 442          * recover from any failures any more...
 443          */
 444         iflag = disable_interrupts();
 445 #ifdef CONFIG_NETCONSOLE
 446         /* Stop the ethernet stack if NetConsole could have left it up */
 447         eth_halt();
 448 # ifndef CONFIG_DM_ETH
 449         eth_unregister(eth_get_dev());
 450 # endif
 451 #endif
 452
 453 #if defined(CONFIG_CMD_USB)
 454         /*
 455          * turn off USB to prevent the host controller from writing to the
 456          * SDRAM while Linux is booting. This could happen (at least for OHCI
 457          * controller), because the HCCA (Host Controller Communication Area)
 458          * lies within the SDRAM and the host controller writes continously to
 459          * this area (as busmaster!). The HccaFrameNumber is for example
 460          * updated every 1 ms within the HCCA structure in SDRAM! For more
 461          * details see the OpenHCI specification.
 462          */
 463         usb_stop();
 464 #endif
 465         return iflag;
 466 }
 467
 468 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 469
 470 #define CONSOLE_ARG     "console="
 471 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 472
 473 static void fixup_silent_linux(void)
 474 {
 475         char *buf;
 476         const char *env_val;
 477         char *cmdline = env_get("bootargs");
 478         int want_silent;
 479
 480         /*
 481          * Only fix cmdline when requested. The environment variable can be:
 482          *
 483          *      no - we never fixup
 484          *      yes - we always fixup
 485          *      unset - we rely on the console silent flag
 486          */
 487         want_silent = env_get_yesno("silent_linux");
 488         if (want_silent == 0)
 489                 return;
 490         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 491                 return;
 492
 493         debug("before silent fix-up: %s\n", cmdline);
 494         if (cmdline && (cmdline[0] != '\0')) {
 495                 char *start = strstr(cmdline, CONSOLE_ARG);
 496
 497                 /* Allocate space for maximum possible new command line */
 498                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 499                 if (!buf) {
 500                         debug("%s: out of memory\n", __func__);
 501                         return;
 502                 }
 503
 504                 if (start) {
 505                         char *end = strchr(start, ' ');
 506                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 507
 508                         strncpy(buf, cmdline, num_start_bytes);
 509                         if (end)
 510                                 strcpy(buf + num_start_bytes, end);
 511                         else
 512                                 buf[num_start_bytes] = '\0';
 513                 } else {
 514                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 515                 }
 516                 env_val = buf;
 517         } else {
 518                 buf = NULL;
 519                 env_val = CONSOLE_ARG;
 520         }
 521
 522         env_set("bootargs", env_val);
 523         debug("after silent fix-up: %s\n", env_val);
 524         free(buf);
 525 }
 526 #endif /* CONFIG_SILENT_CONSOLE */
 527
 528 /**
 529  * Execute selected states of the bootm command.
 530  *
 531  * Note the arguments to this state must be the first argument, Any 'bootm'
 532  * or sub-command arguments must have already been taken.
 533  *
 534  * Note that if states contains more than one flag it MUST contain
 535  * BOOTM_STATE_START, since this handles and consumes the command line args.
 536  *
 537  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 538  * functions we store the return value of in 'ret' may use a negative return
 539  * value, without special handling.
 540  *
 541  * @param cmdtp         Pointer to bootm command table entry
 542  * @param flag          Command flags (CMD_FLAG_...)
 543  * @param argc          Number of subcommand arguments (0 = no arguments)
 544  * @param argv          Arguments
 545  * @param states        Mask containing states to run (BOOTM_STATE_...)
 546  * @param images        Image header information
 547  * @param boot_progress 1 to show boot progress, 0 to not do this
 548  * @return 0 if ok, something else on error. Some errors will cause this
 549  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 550  *      then the intent is to boot an OS, so this function will not return
 551  *      unless the image type is standalone.
 552  */
 553 int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
 554                     char *const argv[], int states, bootm_headers_t *images,
 555                     int boot_progress)
 556 {
 557         boot_os_fn *boot_fn;
 558         ulong iflag = 0;
 559         int ret = 0, need_boot_fn;
 560
 561         images->state |= states;
 562
 563         /*
 564          * Work through the states and see how far we get. We stop on
 565          * any error.
 566          */
 567         if (states & BOOTM_STATE_START)
 568                 ret = bootm_start(cmdtp, flag, argc, argv);
 569
 570         if (!ret && (states & BOOTM_STATE_FINDOS))
 571                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 572
 573         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 574                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 575
 576         /* Load the OS */
 577         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 578                 iflag = bootm_disable_interrupts();
 579                 ret = bootm_load_os(images, 0);
 580                 if (ret && ret != BOOTM_ERR_OVERLAP)
 581                         goto err;
 582                 else if (ret == BOOTM_ERR_OVERLAP)
 583                         ret = 0;
 584         }
 585
 586         /* Relocate the ramdisk */
 587 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 588         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 589                 ulong rd_len = images->rd_end - images->rd_start;
 590
 591                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 592                         rd_len, &images->initrd_start, &images->initrd_end);
 593                 if (!ret) {
 594                         env_set_hex("initrd_start", images->initrd_start);
 595                         env_set_hex("initrd_end", images->initrd_end);
 596                 }
 597         }
 598 #endif
 599 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
 600         if (!ret && (states & BOOTM_STATE_FDT)) {
 601                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 602                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 603                                         &images->ft_len);
 604         }
 605 #endif
 606
 607         /* From now on, we need the OS boot function */
 608         if (ret)
 609                 return ret;
 610         boot_fn = bootm_os_get_boot_func(images->os.os);
 611         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 612                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 613                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 614         if (boot_fn == NULL && need_boot_fn) {
 615                 if (iflag)
 616                         enable_interrupts();
 617                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 618                        genimg_get_os_name(images->os.os), images->os.os);
 619                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 620                 return 1;
 621         }
 622
 623
 624         /* Call various other states that are not generally used */
 625         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 626                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 627         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 628                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 629         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 630 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 631                 if (images->os.os == IH_OS_LINUX)
 632                         fixup_silent_linux();
 633 #endif
 634                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 635         }
 636
 637 #ifdef CONFIG_TRACE
 638         /* Pretend to run the OS, then run a user command */
 639         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 640                 char *cmd_list = env_get("fakegocmd");
 641
 642                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 643                                 images, boot_fn);
 644                 if (!ret && cmd_list)
 645                         ret = run_command_list(cmd_list, -1, flag);
 646         }
 647 #endif
 648
 649         /* Check for unsupported subcommand. */
 650         if (ret) {
 651                 puts("subcommand not supported\n");
 652                 return ret;
 653         }
 654
 655         /* Now run the OS! We hope this doesn't return */
 656         if (!ret && (states & BOOTM_STATE_OS_GO))
 657                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 658                                 images, boot_fn);
 659
 660         /* Deal with any fallout */
 661 err:
 662         if (iflag)
 663                 enable_interrupts();
 664
 665         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 666                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 667         else if (ret == BOOTM_ERR_RESET)
 668                 do_reset(cmdtp, flag, argc, argv);
 669
 670         return ret;
 671 }
 672
 673 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 674 /**
 675  * image_get_kernel - verify legacy format kernel image
 676  * @img_addr: in RAM address of the legacy format image to be verified
 677  * @verify: data CRC verification flag
 678  *
 679  * image_get_kernel() verifies legacy image integrity and returns pointer to
 680  * legacy image header if image verification was completed successfully.
 681  *
 682  * returns:
 683  *     pointer to a legacy image header if valid image was found
 684  *     otherwise return NULL
 685  */
 686 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 687 {
 688         image_header_t *hdr = (image_header_t *)img_addr;
 689
 690         if (!image_check_magic(hdr)) {
 691                 puts("Bad Magic Number\n");
 692                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 693                 return NULL;
 694         }
 695         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 696
 697         if (!image_check_hcrc(hdr)) {
 698                 puts("Bad Header Checksum\n");
 699                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 700                 return NULL;
 701         }
 702
 703         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 704         image_print_contents(hdr);
 705
 706         if (verify) {
 707                 puts("   Verifying Checksum ... ");
 708                 if (!image_check_dcrc(hdr)) {
 709                         printf("Bad Data CRC\n");
 710                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 711                         return NULL;
 712                 }
 713                 puts("OK\n");
 714         }
 715         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 716
 717         if (!image_check_target_arch(hdr)) {
 718                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 719                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 720                 return NULL;
 721         }
 722         return hdr;
 723 }
 724 #endif
 725
 726 /**
 727  * boot_get_kernel - find kernel image
 728  * @os_data: pointer to a ulong variable, will hold os data start address
 729  * @os_len: pointer to a ulong variable, will hold os data length
 730  *
 731  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 732  * and locates kernel data.
 733  *
 734  * returns:
 735  *     pointer to image header if valid image was found, plus kernel start
 736  *     address and length, otherwise NULL
 737  */
 738 static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
 739                                    char *const argv[], bootm_headers_t *images,
 740                                    ulong *os_data, ulong *os_len)
 741 {
 742 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 743         image_header_t  *hdr;
 744 #endif
 745         ulong           img_addr;
 746         const void *buf;
 747         const char      *fit_uname_config = NULL;
 748         const char      *fit_uname_kernel = NULL;
 749 #if IMAGE_ENABLE_FIT
 750         int             os_noffset;
 751 #endif
 752
 753         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 754                                               &fit_uname_config,
 755                                               &fit_uname_kernel);
 756
 757         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 758
 759         /* check image type, for FIT images get FIT kernel node */
 760         *os_data = *os_len = 0;
 761         buf = map_sysmem(img_addr, 0);
 762         switch (genimg_get_format(buf)) {
 763 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 764         case IMAGE_FORMAT_LEGACY:
 765                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 766                        img_addr);
 767                 hdr = image_get_kernel(img_addr, images->verify);
 768                 if (!hdr)
 769                         return NULL;
 770                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 771
 772                 /* get os_data and os_len */
 773                 switch (image_get_type(hdr)) {
 774                 case IH_TYPE_KERNEL:
 775                 case IH_TYPE_KERNEL_NOLOAD:
 776                         *os_data = image_get_data(hdr);
 777                         *os_len = image_get_data_size(hdr);
 778                         break;
 779                 case IH_TYPE_MULTI:
 780                         image_multi_getimg(hdr, 0, os_data, os_len);
 781                         break;
 782                 case IH_TYPE_STANDALONE:
 783                         *os_data = image_get_data(hdr);
 784                         *os_len = image_get_data_size(hdr);
 785                         break;
 786                 default:
 787                         printf("Wrong Image Type for %s command\n",
 788                                cmdtp->name);
 789                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 790                         return NULL;
 791                 }
 792
 793                 /*
 794                  * copy image header to allow for image overwrites during
 795                  * kernel decompression.
 796                  */
 797                 memmove(&images->legacy_hdr_os_copy, hdr,
 798                         sizeof(image_header_t));
 799
 800                 /* save pointer to image header */
 801                 images->legacy_hdr_os = hdr;
 802
 803                 images->legacy_hdr_valid = 1;
 804                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 805                 break;
 806 #endif
 807 #if IMAGE_ENABLE_FIT
 808         case IMAGE_FORMAT_FIT:
 809                 os_noffset = fit_image_load(images, img_addr,
 810                                 &fit_uname_kernel, &fit_uname_config,
 811                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 812                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 813                                 FIT_LOAD_IGNORED, os_data, os_len);
 814                 if (os_noffset < 0)
 815                         return NULL;
 816
 817                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 818                 images->fit_uname_os = fit_uname_kernel;
 819                 images->fit_uname_cfg = fit_uname_config;
 820                 images->fit_noffset_os = os_noffset;
 821                 break;
 822 #endif
 823 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 824         case IMAGE_FORMAT_ANDROID:
 825                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 826                 if (android_image_get_kernel(buf, images->verify,
 827                                              os_data, os_len))
 828                         return NULL;
 829                 break;
 830 #endif
 831         default:
 832                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 833                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 834                 return NULL;
 835         }
 836
 837         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 838               *os_data, *os_len, *os_len);
 839
 840         return buf;
 841 }
 842
 843 /**
 844  * switch_to_non_secure_mode() - switch to non-secure mode
 845  *
 846  * This routine is overridden by architectures requiring this feature.
 847  */
 848 void __weak switch_to_non_secure_mode(void)
 849 {
 850 }
 851
 852 #else /* USE_HOSTCC */
 853
 854 #if defined(CONFIG_FIT_SIGNATURE)
 855 static int bootm_host_load_image(const void *fit, int req_image_type,
 856                                  int cfg_noffset)
 857 {
 858         const char *fit_uname_config = NULL;
 859         ulong data, len;
 860         bootm_headers_t images;
 861         int noffset;
 862         ulong load_end;
 863         uint8_t image_type;
 864         uint8_t imape_comp;
 865         void *load_buf;
 866         int ret;
 867
 868         fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
 869         memset(&images, '\0', sizeof(images));
 870         images.verify = 1;
 871         noffset = fit_image_load(&images, (ulong)fit,
 872                 NULL, &fit_uname_config,
 873                 IH_ARCH_DEFAULT, req_image_type, -1,
 874                 FIT_LOAD_IGNORED, &data, &len);
 875         if (noffset < 0)
 876                 return noffset;
 877         if (fit_image_get_type(fit, noffset, &image_type)) {
 878                 puts("Can't get image type!\n");
 879                 return -EINVAL;
 880         }
 881
 882         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 883                 puts("Can't get image compression!\n");
 884                 return -EINVAL;
 885         }
 886
 887         /* Allow the image to expand by a factor of 4, should be safe */
 888         load_buf = malloc((1 << 20) + len * 4);
 889         ret = image_decomp(imape_comp, 0, data, image_type, load_buf,
 890                            (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 891                            &load_end);
 892         free(load_buf);
 893
 894         if (ret) {
 895                 ret = handle_decomp_error(imape_comp, load_end - 0, ret);
 896                 if (ret != BOOTM_ERR_UNIMPLEMENTED)
 897                         return ret;
 898         }
 899
 900         return 0;
 901 }
 902
 903 int bootm_host_load_images(const void *fit, int cfg_noffset)
 904 {
 905         static uint8_t image_types[] = {
 906                 IH_TYPE_KERNEL,
 907                 IH_TYPE_FLATDT,
 908                 IH_TYPE_RAMDISK,
 909         };
 910         int err = 0;
 911         int i;
 912
 913         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 914                 int ret;
 915
 916                 ret = bootm_host_load_image(fit, image_types[i], cfg_noffset);
 917                 if (!err && ret && ret != -ENOENT)
 918                         err = ret;
 919         }
 920
 921         /* Return the first error we found */
 922         return err;
 923 }
 924 #endif
 925
 926 #endif /* ndef USE_HOSTCC */