common/bootm.c

   1 /*
   2  * (C) Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef USE_HOSTCC
   9 #include <common.h>
  10 #include <bootstage.h>
  11 #include <bzlib.h>
  12 #include <errno.h>
  13 #include <fdt_support.h>
  14 #include <lmb.h>
  15 #include <malloc.h>
  16 #include <asm/io.h>
  17 #include <linux/lzo.h>
  18 #include <lzma/LzmaTypes.h>
  19 #include <lzma/LzmaDec.h>
  20 #include <lzma/LzmaTools.h>
  21 #if defined(CONFIG_CMD_USB)
  22 #include <usb.h>
  23 #endif
  24 #else
  25 #include "mkimage.h"
  26 #endif
  27
  28 #include <command.h>
  29 #include <bootm.h>
  30 #include <image.h>
  31
  32 #ifndef CONFIG_SYS_BOOTM_LEN
  33 /* use 8MByte as default max gunzip size */
  34 #define CONFIG_SYS_BOOTM_LEN    0x800000
  35 #endif
  36
  37 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  38
  39 #ifndef USE_HOSTCC
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  44                                    char * const argv[], bootm_headers_t *images,
  45                                    ulong *os_data, ulong *os_len);
  46
  47 #ifdef CONFIG_LMB
  48 static void boot_start_lmb(bootm_headers_t *images)
  49 {
  50         ulong           mem_start;
  51         phys_size_t     mem_size;
  52
  53         lmb_init(&images->lmb);
  54
  55         mem_start = getenv_bootm_low();
  56         mem_size = getenv_bootm_size();
  57
  58         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
  59
  60         arch_lmb_reserve(&images->lmb);
  61         board_lmb_reserve(&images->lmb);
  62 }
  63 #else
  64 #define lmb_reserve(lmb, base, size)
  65 static inline void boot_start_lmb(bootm_headers_t *images) { }
  66 #endif
  67
  68 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
  69                        char * const argv[])
  70 {
  71         memset((void *)&images, 0, sizeof(images));
  72         images.verify = getenv_yesno("verify");
  73
  74         boot_start_lmb(&images);
  75
  76         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  77         images.state = BOOTM_STATE_START;
  78
  79         return 0;
  80 }
  81
  82 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
  83                          char * const argv[])
  84 {
  85         const void *os_hdr;
  86         bool ep_found = false;
  87         int ret;
  88
  89         /* get kernel image header, start address and length */
  90         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  91                         &images, &images.os.image_start, &images.os.image_len);
  92         if (images.os.image_len == 0) {
  93                 puts("ERROR: can't get kernel image!\n");
  94                 return 1;
  95         }
  96
  97         /* get image parameters */
  98         switch (genimg_get_format(os_hdr)) {
  99 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 100         case IMAGE_FORMAT_LEGACY:
 101                 images.os.type = image_get_type(os_hdr);
 102                 images.os.comp = image_get_comp(os_hdr);
 103                 images.os.os = image_get_os(os_hdr);
 104
 105                 images.os.end = image_get_image_end(os_hdr);
 106                 images.os.load = image_get_load(os_hdr);
 107                 images.os.arch = image_get_arch(os_hdr);
 108                 break;
 109 #endif
 110 #if defined(CONFIG_FIT)
 111         case IMAGE_FORMAT_FIT:
 112                 if (fit_image_get_type(images.fit_hdr_os,
 113                                        images.fit_noffset_os,
 114                                        &images.os.type)) {
 115                         puts("Can't get image type!\n");
 116                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 117                         return 1;
 118                 }
 119
 120                 if (fit_image_get_comp(images.fit_hdr_os,
 121                                        images.fit_noffset_os,
 122                                        &images.os.comp)) {
 123                         puts("Can't get image compression!\n");
 124                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 125                         return 1;
 126                 }
 127
 128                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 129                                      &images.os.os)) {
 130                         puts("Can't get image OS!\n");
 131                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 132                         return 1;
 133                 }
 134
 135                 if (fit_image_get_arch(images.fit_hdr_os,
 136                                        images.fit_noffset_os,
 137                                        &images.os.arch)) {
 138                         puts("Can't get image ARCH!\n");
 139                         return 1;
 140                 }
 141
 142                 images.os.end = fit_get_end(images.fit_hdr_os);
 143
 144                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 145                                        &images.os.load)) {
 146                         puts("Can't get image load address!\n");
 147                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 148                         return 1;
 149                 }
 150                 break;
 151 #endif
 152 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 153         case IMAGE_FORMAT_ANDROID:
 154                 images.os.type = IH_TYPE_KERNEL;
 155                 images.os.comp = IH_COMP_NONE;
 156                 images.os.os = IH_OS_LINUX;
 157
 158                 images.os.end = android_image_get_end(os_hdr);
 159                 images.os.load = android_image_get_kload(os_hdr);
 160                 images.ep = images.os.load;
 161                 ep_found = true;
 162                 break;
 163 #endif
 164         default:
 165                 puts("ERROR: unknown image format type!\n");
 166                 return 1;
 167         }
 168
 169         /* If we have a valid setup.bin, we will use that for entry (x86) */
 170         if (images.os.arch == IH_ARCH_I386 ||
 171             images.os.arch == IH_ARCH_X86_64) {
 172                 ulong len;
 173
 174                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 175                 if (ret < 0 && ret != -ENOENT) {
 176                         puts("Could not find a valid setup.bin for x86\n");
 177                         return 1;
 178                 }
 179                 /* Kernel entry point is the setup.bin */
 180         } else if (images.legacy_hdr_valid) {
 181                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 182 #if defined(CONFIG_FIT)
 183         } else if (images.fit_uname_os) {
 184                 int ret;
 185
 186                 ret = fit_image_get_entry(images.fit_hdr_os,
 187                                           images.fit_noffset_os, &images.ep);
 188                 if (ret) {
 189                         puts("Can't get entry point property!\n");
 190                         return 1;
 191                 }
 192 #endif
 193         } else if (!ep_found) {
 194                 puts("Could not find kernel entry point!\n");
 195                 return 1;
 196         }
 197
 198         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 199                 images.os.load = images.os.image_start;
 200                 images.ep += images.os.load;
 201         }
 202
 203         images.os.start = (ulong)os_hdr;
 204
 205         return 0;
 206 }
 207
 208 static int bootm_find_ramdisk(int flag, int argc, char * const argv[])
 209 {
 210         int ret;
 211
 212         /* find ramdisk */
 213         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 214                                &images.rd_start, &images.rd_end);
 215         if (ret) {
 216                 puts("Ramdisk image is corrupt or invalid\n");
 217                 return 1;
 218         }
 219
 220         return 0;
 221 }
 222
 223 #if defined(CONFIG_OF_LIBFDT)
 224 static int bootm_find_fdt(int flag, int argc, char * const argv[])
 225 {
 226         int ret;
 227
 228         /* find flattened device tree */
 229         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 230                            &images.ft_addr, &images.ft_len);
 231         if (ret) {
 232                 puts("Could not find a valid device tree\n");
 233                 return 1;
 234         }
 235
 236         set_working_fdt_addr(images.ft_addr);
 237
 238         return 0;
 239 }
 240 #endif
 241
 242 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[])
 243 {
 244         if (bootm_find_ramdisk(flag, argc, argv))
 245                 return 1;
 246
 247 #if defined(CONFIG_OF_LIBFDT)
 248         if (bootm_find_fdt(flag, argc, argv))
 249                 return 1;
 250 #endif
 251
 252         return 0;
 253 }
 254
 255 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 256                             char * const argv[])
 257 {
 258         if (((images.os.type == IH_TYPE_KERNEL) ||
 259              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 260              (images.os.type == IH_TYPE_MULTI)) &&
 261             (images.os.os == IH_OS_LINUX ||
 262                  images.os.os == IH_OS_VXWORKS))
 263                 return bootm_find_ramdisk_fdt(flag, argc, argv);
 264
 265         return 0;
 266 }
 267 #endif /* USE_HOSTCC */
 268
 269 /**
 270  * decomp_image() - decompress the operating system
 271  *
 272  * @comp:       Compression algorithm that is used (IH_COMP_...)
 273  * @load:       Destination load address in U-Boot memory
 274  * @image_start Image start address (where we are decompressing from)
 275  * @type:       OS type (IH_OS_...)
 276  * @load_bug:   Place to decompress to
 277  * @image_buf:  Address to decompress from
 278  * @return 0 if OK, -ve on error (BOOTM_ERR_...)
 279  */
 280 static int decomp_image(int comp, ulong load, ulong image_start, int type,
 281                         void *load_buf, void *image_buf, ulong image_len,
 282                         ulong *load_end)
 283 {
 284         const char *type_name = genimg_get_type_name(type);
 285         __attribute__((unused)) uint unc_len = CONFIG_SYS_BOOTM_LEN;
 286
 287         *load_end = load;
 288         switch (comp) {
 289         case IH_COMP_NONE:
 290                 if (load == image_start) {
 291                         printf("   XIP %s ... ", type_name);
 292                 } else {
 293                         printf("   Loading %s ... ", type_name);
 294                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 295                 }
 296                 *load_end = load + image_len;
 297                 break;
 298 #ifdef CONFIG_GZIP
 299         case IH_COMP_GZIP:
 300                 printf("   Uncompressing %s ... ", type_name);
 301                 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) {
 302                         puts("GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover\n");
 303                         return BOOTM_ERR_RESET;
 304                 }
 305
 306                 *load_end = load + image_len;
 307                 break;
 308 #endif /* CONFIG_GZIP */
 309 #ifdef CONFIG_BZIP2
 310         case IH_COMP_BZIP2:
 311                 printf("   Uncompressing %s ... ", type_name);
 312                 /*
 313                  * If we've got less than 4 MB of malloc() space,
 314                  * use slower decompression algorithm which requires
 315                  * at most 2300 KB of memory.
 316                  */
 317                 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len,
 318                         image_buf, image_len,
 319                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 320                 if (i != BZ_OK) {
 321                         printf("BUNZIP2: uncompress or overwrite error %d - must RESET board to recover\n",
 322                                i);
 323                         return BOOTM_ERR_RESET;
 324                 }
 325
 326                 *load_end = load + unc_len;
 327                 break;
 328 #endif /* CONFIG_BZIP2 */
 329 #ifdef CONFIG_LZMA
 330         case IH_COMP_LZMA: {
 331                 SizeT lzma_len = unc_len;
 332                 int ret;
 333
 334                 printf("   Uncompressing %s ... ", type_name);
 335
 336                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 337                                                image_buf, image_len);
 338                 unc_len = lzma_len;
 339                 if (ret != SZ_OK) {
 340                         printf("LZMA: uncompress or overwrite error %d - must RESET board to recover\n",
 341                                ret);
 342                         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 343                         return BOOTM_ERR_RESET;
 344                 }
 345                 *load_end = load + unc_len;
 346                 break;
 347         }
 348 #endif /* CONFIG_LZMA */
 349 #ifdef CONFIG_LZO
 350         case IH_COMP_LZO: {
 351                 size_t size = unc_len;
 352                 int ret;
 353
 354                 printf("   Uncompressing %s ... ", type_name);
 355
 356                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 357                 if (ret != LZO_E_OK) {
 358                         printf("LZO: uncompress or overwrite error %d - must RESET board to recover\n",
 359                                ret);
 360                         return BOOTM_ERR_RESET;
 361                 }
 362
 363                 *load_end = load + size;
 364                 break;
 365         }
 366 #endif /* CONFIG_LZO */
 367         default:
 368                 printf("Unimplemented compression type %d\n", comp);
 369                 return BOOTM_ERR_UNIMPLEMENTED;
 370         }
 371
 372         puts("OK\n");
 373
 374         return 0;
 375 }
 376
 377 #ifndef USE_HOSTCC
 378 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
 379                          int boot_progress)
 380 {
 381         image_info_t os = images->os;
 382         ulong load = os.load;
 383         ulong blob_start = os.start;
 384         ulong blob_end = os.end;
 385         ulong image_start = os.image_start;
 386         ulong image_len = os.image_len;
 387         bool no_overlap;
 388         void *load_buf, *image_buf;
 389         int err;
 390
 391         load_buf = map_sysmem(load, 0);
 392         image_buf = map_sysmem(os.image_start, image_len);
 393         err = decomp_image(os.comp, load, os.image_start, os.type, load_buf,
 394                            image_buf, image_len, load_end);
 395         if (err) {
 396                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 397                 return err;
 398         }
 399         flush_cache(load, (*load_end - load) * sizeof(ulong));
 400
 401         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 402         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 403
 404         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 405
 406         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
 407                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 408                       blob_start, blob_end);
 409                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 410                       *load_end);
 411
 412                 /* Check what type of image this is. */
 413                 if (images->legacy_hdr_valid) {
 414                         if (image_get_type(&images->legacy_hdr_os_copy)
 415                                         == IH_TYPE_MULTI)
 416                                 puts("WARNING: legacy format multi component image overwritten\n");
 417                         return BOOTM_ERR_OVERLAP;
 418                 } else {
 419                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 420                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 421                         return BOOTM_ERR_RESET;
 422                 }
 423         }
 424
 425         return 0;
 426 }
 427
 428 /**
 429  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 430  *
 431  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 432  *      enabled)
 433  */
 434 ulong bootm_disable_interrupts(void)
 435 {
 436         ulong iflag;
 437
 438         /*
 439          * We have reached the point of no return: we are going to
 440          * overwrite all exception vector code, so we cannot easily
 441          * recover from any failures any more...
 442          */
 443         iflag = disable_interrupts();
 444 #ifdef CONFIG_NETCONSOLE
 445         /* Stop the ethernet stack if NetConsole could have left it up */
 446         eth_halt();
 447         eth_unregister(eth_get_dev());
 448 #endif
 449
 450 #if defined(CONFIG_CMD_USB)
 451         /*
 452          * turn off USB to prevent the host controller from writing to the
 453          * SDRAM while Linux is booting. This could happen (at least for OHCI
 454          * controller), because the HCCA (Host Controller Communication Area)
 455          * lies within the SDRAM and the host controller writes continously to
 456          * this area (as busmaster!). The HccaFrameNumber is for example
 457          * updated every 1 ms within the HCCA structure in SDRAM! For more
 458          * details see the OpenHCI specification.
 459          */
 460         usb_stop();
 461 #endif
 462         return iflag;
 463 }
 464
 465 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 466
 467 #define CONSOLE_ARG     "console="
 468 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 469
 470 static void fixup_silent_linux(void)
 471 {
 472         char *buf;
 473         const char *env_val;
 474         char *cmdline = getenv("bootargs");
 475         int want_silent;
 476
 477         /*
 478          * Only fix cmdline when requested. The environment variable can be:
 479          *
 480          *      no - we never fixup
 481          *      yes - we always fixup
 482          *      unset - we rely on the console silent flag
 483          */
 484         want_silent = getenv_yesno("silent_linux");
 485         if (want_silent == 0)
 486                 return;
 487         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 488                 return;
 489
 490         debug("before silent fix-up: %s\n", cmdline);
 491         if (cmdline && (cmdline[0] != '\0')) {
 492                 char *start = strstr(cmdline, CONSOLE_ARG);
 493
 494                 /* Allocate space for maximum possible new command line */
 495                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 496                 if (!buf) {
 497                         debug("%s: out of memory\n", __func__);
 498                         return;
 499                 }
 500
 501                 if (start) {
 502                         char *end = strchr(start, ' ');
 503                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 504
 505                         strncpy(buf, cmdline, num_start_bytes);
 506                         if (end)
 507                                 strcpy(buf + num_start_bytes, end);
 508                         else
 509                                 buf[num_start_bytes] = '\0';
 510                 } else {
 511                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 512                 }
 513                 env_val = buf;
 514         } else {
 515                 buf = NULL;
 516                 env_val = CONSOLE_ARG;
 517         }
 518
 519         setenv("bootargs", env_val);
 520         debug("after silent fix-up: %s\n", env_val);
 521         free(buf);
 522 }
 523 #endif /* CONFIG_SILENT_CONSOLE */
 524
 525 /**
 526  * Execute selected states of the bootm command.
 527  *
 528  * Note the arguments to this state must be the first argument, Any 'bootm'
 529  * or sub-command arguments must have already been taken.
 530  *
 531  * Note that if states contains more than one flag it MUST contain
 532  * BOOTM_STATE_START, since this handles and consumes the command line args.
 533  *
 534  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 535  * functions we store the return value of in 'ret' may use a negative return
 536  * value, without special handling.
 537  *
 538  * @param cmdtp         Pointer to bootm command table entry
 539  * @param flag          Command flags (CMD_FLAG_...)
 540  * @param argc          Number of subcommand arguments (0 = no arguments)
 541  * @param argv          Arguments
 542  * @param states        Mask containing states to run (BOOTM_STATE_...)
 543  * @param images        Image header information
 544  * @param boot_progress 1 to show boot progress, 0 to not do this
 545  * @return 0 if ok, something else on error. Some errors will cause this
 546  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 547  *      then the intent is to boot an OS, so this function will not return
 548  *      unless the image type is standalone.
 549  */
 550 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 551                     int states, bootm_headers_t *images, 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                 argc = 0;       /* consume the args */
 572         }
 573
 574         /* Load the OS */
 575         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 576                 ulong load_end;
 577
 578                 iflag = bootm_disable_interrupts();
 579                 ret = bootm_load_os(images, &load_end, 0);
 580                 if (ret == 0)
 581                         lmb_reserve(&images->lmb, images->os.load,
 582                                     (load_end - images->os.load));
 583                 else if (ret && ret != BOOTM_ERR_OVERLAP)
 584                         goto err;
 585                 else if (ret == BOOTM_ERR_OVERLAP)
 586                         ret = 0;
 587 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 588                 if (images->os.os == IH_OS_LINUX)
 589                         fixup_silent_linux();
 590 #endif
 591         }
 592
 593         /* Relocate the ramdisk */
 594 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 595         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 596                 ulong rd_len = images->rd_end - images->rd_start;
 597
 598                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 599                         rd_len, &images->initrd_start, &images->initrd_end);
 600                 if (!ret) {
 601                         setenv_hex("initrd_start", images->initrd_start);
 602                         setenv_hex("initrd_end", images->initrd_end);
 603                 }
 604         }
 605 #endif
 606 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
 607         if (!ret && (states & BOOTM_STATE_FDT)) {
 608                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 609                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 610                                         &images->ft_len);
 611         }
 612 #endif
 613
 614         /* From now on, we need the OS boot function */
 615         if (ret)
 616                 return ret;
 617         boot_fn = bootm_os_get_boot_func(images->os.os);
 618         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 619                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 620                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 621         if (boot_fn == NULL && need_boot_fn) {
 622                 if (iflag)
 623                         enable_interrupts();
 624                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 625                        genimg_get_os_name(images->os.os), images->os.os);
 626                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 627                 return 1;
 628         }
 629
 630         /* Call various other states that are not generally used */
 631         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 632                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 633         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 634                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 635         if (!ret && (states & BOOTM_STATE_OS_PREP))
 636                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 637
 638 #ifdef CONFIG_TRACE
 639         /* Pretend to run the OS, then run a user command */
 640         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 641                 char *cmd_list = getenv("fakegocmd");
 642
 643                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 644                                 images, boot_fn);
 645                 if (!ret && cmd_list)
 646                         ret = run_command_list(cmd_list, -1, flag);
 647         }
 648 #endif
 649
 650         /* Check for unsupported subcommand. */
 651         if (ret) {
 652                 puts("subcommand not supported\n");
 653                 return ret;
 654         }
 655
 656         /* Now run the OS! We hope this doesn't return */
 657         if (!ret && (states & BOOTM_STATE_OS_GO))
 658                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 659                                 images, boot_fn);
 660
 661         /* Deal with any fallout */
 662 err:
 663         if (iflag)
 664                 enable_interrupts();
 665
 666         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 667                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 668         else if (ret == BOOTM_ERR_RESET)
 669                 do_reset(cmdtp, flag, argc, argv);
 670
 671         return ret;
 672 }
 673
 674 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 675 /**
 676  * image_get_kernel - verify legacy format kernel image
 677  * @img_addr: in RAM address of the legacy format image to be verified
 678  * @verify: data CRC verification flag
 679  *
 680  * image_get_kernel() verifies legacy image integrity and returns pointer to
 681  * legacy image header if image verification was completed successfully.
 682  *
 683  * returns:
 684  *     pointer to a legacy image header if valid image was found
 685  *     otherwise return NULL
 686  */
 687 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 688 {
 689         image_header_t *hdr = (image_header_t *)img_addr;
 690
 691         if (!image_check_magic(hdr)) {
 692                 puts("Bad Magic Number\n");
 693                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 694                 return NULL;
 695         }
 696         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 697
 698         if (!image_check_hcrc(hdr)) {
 699                 puts("Bad Header Checksum\n");
 700                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 701                 return NULL;
 702         }
 703
 704         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 705         image_print_contents(hdr);
 706
 707         if (verify) {
 708                 puts("   Verifying Checksum ... ");
 709                 if (!image_check_dcrc(hdr)) {
 710                         printf("Bad Data CRC\n");
 711                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 712                         return NULL;
 713                 }
 714                 puts("OK\n");
 715         }
 716         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 717
 718         if (!image_check_target_arch(hdr)) {
 719                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 720                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 721                 return NULL;
 722         }
 723         return hdr;
 724 }
 725 #endif
 726
 727 /**
 728  * boot_get_kernel - find kernel image
 729  * @os_data: pointer to a ulong variable, will hold os data start address
 730  * @os_len: pointer to a ulong variable, will hold os data length
 731  *
 732  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 733  * and locates kernel data.
 734  *
 735  * returns:
 736  *     pointer to image header if valid image was found, plus kernel start
 737  *     address and length, otherwise NULL
 738  */
 739 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 740                                    char * const argv[], bootm_headers_t *images,
 741                                    ulong *os_data, ulong *os_len)
 742 {
 743 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 744         image_header_t  *hdr;
 745 #endif
 746         ulong           img_addr;
 747         const void *buf;
 748         const char      *fit_uname_config = NULL;
 749         const char      *fit_uname_kernel = NULL;
 750 #if defined(CONFIG_FIT)
 751         int             os_noffset;
 752 #endif
 753
 754         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 755                                               &fit_uname_config,
 756                                               &fit_uname_kernel);
 757
 758         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 759
 760         /* copy from dataflash if needed */
 761         img_addr = genimg_get_image(img_addr);
 762
 763         /* check image type, for FIT images get FIT kernel node */
 764         *os_data = *os_len = 0;
 765         buf = map_sysmem(img_addr, 0);
 766         switch (genimg_get_format(buf)) {
 767 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 768         case IMAGE_FORMAT_LEGACY:
 769                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 770                        img_addr);
 771                 hdr = image_get_kernel(img_addr, images->verify);
 772                 if (!hdr)
 773                         return NULL;
 774                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 775
 776                 /* get os_data and os_len */
 777                 switch (image_get_type(hdr)) {
 778                 case IH_TYPE_KERNEL:
 779                 case IH_TYPE_KERNEL_NOLOAD:
 780                         *os_data = image_get_data(hdr);
 781                         *os_len = image_get_data_size(hdr);
 782                         break;
 783                 case IH_TYPE_MULTI:
 784                         image_multi_getimg(hdr, 0, os_data, os_len);
 785                         break;
 786                 case IH_TYPE_STANDALONE:
 787                         *os_data = image_get_data(hdr);
 788                         *os_len = image_get_data_size(hdr);
 789                         break;
 790                 default:
 791                         printf("Wrong Image Type for %s command\n",
 792                                cmdtp->name);
 793                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 794                         return NULL;
 795                 }
 796
 797                 /*
 798                  * copy image header to allow for image overwrites during
 799                  * kernel decompression.
 800                  */
 801                 memmove(&images->legacy_hdr_os_copy, hdr,
 802                         sizeof(image_header_t));
 803
 804                 /* save pointer to image header */
 805                 images->legacy_hdr_os = hdr;
 806
 807                 images->legacy_hdr_valid = 1;
 808                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 809                 break;
 810 #endif
 811 #if defined(CONFIG_FIT)
 812         case IMAGE_FORMAT_FIT:
 813                 os_noffset = fit_image_load(images, img_addr,
 814                                 &fit_uname_kernel, &fit_uname_config,
 815                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 816                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 817                                 FIT_LOAD_IGNORED, os_data, os_len);
 818                 if (os_noffset < 0)
 819                         return NULL;
 820
 821                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 822                 images->fit_uname_os = fit_uname_kernel;
 823                 images->fit_uname_cfg = fit_uname_config;
 824                 images->fit_noffset_os = os_noffset;
 825                 break;
 826 #endif
 827 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 828         case IMAGE_FORMAT_ANDROID:
 829                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 830                 if (android_image_get_kernel(buf, images->verify,
 831                                              os_data, os_len))
 832                         return NULL;
 833                 break;
 834 #endif
 835         default:
 836                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 837                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 838                 return NULL;
 839         }
 840
 841         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 842               *os_data, *os_len, *os_len);
 843
 844         return buf;
 845 }
 846 #else /* USE_HOSTCC */
 847
 848 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
 849 {
 850         memmove(to, from, len);
 851 }
 852
 853 static int bootm_host_load_image(const void *fit, int req_image_type)
 854 {
 855         const char *fit_uname_config = NULL;
 856         ulong data, len;
 857         bootm_headers_t images;
 858         int noffset;
 859         ulong load_end;
 860         uint8_t image_type;
 861         uint8_t imape_comp;
 862         void *load_buf;
 863         int ret;
 864
 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 = decomp_image(imape_comp, 0, data, image_type, load_buf,
 886                            (void *)data, len, &load_end);
 887         free(load_buf);
 888         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
 889                 return ret;
 890
 891         return 0;
 892 }
 893
 894 int bootm_host_load_images(const void *fit, int cfg_noffset)
 895 {
 896         static uint8_t image_types[] = {
 897                 IH_TYPE_KERNEL,
 898                 IH_TYPE_FLATDT,
 899                 IH_TYPE_RAMDISK,
 900         };
 901         int err = 0;
 902         int i;
 903
 904         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 905                 int ret;
 906
 907                 ret = bootm_host_load_image(fit, image_types[i]);
 908                 if (!err && ret && ret != -ENOENT)
 909                         err = ret;
 910         }
 911
 912         /* Return the first error we found */
 913         return err;
 914 }
 915
 916 #endif /* ndef USE_HOSTCC */