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 <mapmem.h>
  17 #include <asm/io.h>
  18 #include <linux/lzo.h>
  19 #include <lzma/LzmaTypes.h>
  20 #include <lzma/LzmaDec.h>
  21 #include <lzma/LzmaTools.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 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  45                                    char * const argv[], bootm_headers_t *images,
  46                                    ulong *os_data, ulong *os_len);
  47
  48 #ifdef CONFIG_LMB
  49 static void boot_start_lmb(bootm_headers_t *images)
  50 {
  51         ulong           mem_start;
  52         phys_size_t     mem_size;
  53
  54         lmb_init(&images->lmb);
  55
  56         mem_start = getenv_bootm_low();
  57         mem_size = getenv_bootm_size();
  58
  59         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
  60
  61         arch_lmb_reserve(&images->lmb);
  62         board_lmb_reserve(&images->lmb);
  63 }
  64 #else
  65 #define lmb_reserve(lmb, base, size)
  66 static inline void boot_start_lmb(bootm_headers_t *images) { }
  67 #endif
  68
  69 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
  70                        char * const argv[])
  71 {
  72         memset((void *)&images, 0, sizeof(images));
  73         images.verify = getenv_yesno("verify");
  74
  75         boot_start_lmb(&images);
  76
  77         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  78         images.state = BOOTM_STATE_START;
  79
  80         return 0;
  81 }
  82
  83 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
  84                          char * const argv[])
  85 {
  86         const void *os_hdr;
  87         bool ep_found = false;
  88         int ret;
  89
  90         /* get kernel image header, start address and length */
  91         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  92                         &images, &images.os.image_start, &images.os.image_len);
  93         if (images.os.image_len == 0) {
  94                 puts("ERROR: can't get kernel image!\n");
  95                 return 1;
  96         }
  97
  98         /* get image parameters */
  99         switch (genimg_get_format(os_hdr)) {
 100 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 101         case IMAGE_FORMAT_LEGACY:
 102                 images.os.type = image_get_type(os_hdr);
 103                 images.os.comp = image_get_comp(os_hdr);
 104                 images.os.os = image_get_os(os_hdr);
 105
 106                 images.os.end = image_get_image_end(os_hdr);
 107                 images.os.load = image_get_load(os_hdr);
 108                 images.os.arch = image_get_arch(os_hdr);
 109                 break;
 110 #endif
 111 #if defined(CONFIG_FIT)
 112         case IMAGE_FORMAT_FIT:
 113                 if (fit_image_get_type(images.fit_hdr_os,
 114                                        images.fit_noffset_os,
 115                                        &images.os.type)) {
 116                         puts("Can't get image type!\n");
 117                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 118                         return 1;
 119                 }
 120
 121                 if (fit_image_get_comp(images.fit_hdr_os,
 122                                        images.fit_noffset_os,
 123                                        &images.os.comp)) {
 124                         puts("Can't get image compression!\n");
 125                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 126                         return 1;
 127                 }
 128
 129                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 130                                      &images.os.os)) {
 131                         puts("Can't get image OS!\n");
 132                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 133                         return 1;
 134                 }
 135
 136                 if (fit_image_get_arch(images.fit_hdr_os,
 137                                        images.fit_noffset_os,
 138                                        &images.os.arch)) {
 139                         puts("Can't get image ARCH!\n");
 140                         return 1;
 141                 }
 142
 143                 images.os.end = fit_get_end(images.fit_hdr_os);
 144
 145                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 146                                        &images.os.load)) {
 147                         puts("Can't get image load address!\n");
 148                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 149                         return 1;
 150                 }
 151                 break;
 152 #endif
 153 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 154         case IMAGE_FORMAT_ANDROID:
 155                 images.os.type = IH_TYPE_KERNEL;
 156                 images.os.comp = IH_COMP_NONE;
 157                 images.os.os = IH_OS_LINUX;
 158
 159                 images.os.end = android_image_get_end(os_hdr);
 160                 images.os.load = android_image_get_kload(os_hdr);
 161                 images.ep = images.os.load;
 162                 ep_found = true;
 163                 break;
 164 #endif
 165         default:
 166                 puts("ERROR: unknown image format type!\n");
 167                 return 1;
 168         }
 169
 170         /* If we have a valid setup.bin, we will use that for entry (x86) */
 171         if (images.os.arch == IH_ARCH_I386 ||
 172             images.os.arch == IH_ARCH_X86_64) {
 173                 ulong len;
 174
 175                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 176                 if (ret < 0 && ret != -ENOENT) {
 177                         puts("Could not find a valid setup.bin for x86\n");
 178                         return 1;
 179                 }
 180                 /* Kernel entry point is the setup.bin */
 181         } else if (images.legacy_hdr_valid) {
 182                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 183 #if defined(CONFIG_FIT)
 184         } else if (images.fit_uname_os) {
 185                 int ret;
 186
 187                 ret = fit_image_get_entry(images.fit_hdr_os,
 188                                           images.fit_noffset_os, &images.ep);
 189                 if (ret) {
 190                         puts("Can't get entry point property!\n");
 191                         return 1;
 192                 }
 193 #endif
 194         } else if (!ep_found) {
 195                 puts("Could not find kernel entry point!\n");
 196                 return 1;
 197         }
 198
 199         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 200                 images.os.load = images.os.image_start;
 201                 images.ep += images.os.load;
 202         }
 203
 204         images.os.start = (ulong)os_hdr;
 205
 206         return 0;
 207 }
 208
 209 /**
 210  * bootm_find_images - wrapper to find and locate various images
 211  * @flag: Ignored Argument
 212  * @argc: command argument count
 213  * @argv: command argument list
 214  *
 215  * boot_find_images() will attempt to load an available ramdisk,
 216  * flattened device tree, as well as specifically marked
 217  * "loadable" images (loadables are FIT only)
 218  *
 219  * Note: bootm_find_images will skip an image if it is not found
 220  *
 221  * @return:
 222  *     0, if all existing images were loaded correctly
 223  *     1, if an image is found but corrupted, or invalid
 224  */
 225 int bootm_find_images(int flag, int argc, char * const argv[])
 226 {
 227         int ret;
 228
 229         /* find ramdisk */
 230         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 231                                &images.rd_start, &images.rd_end);
 232         if (ret) {
 233                 puts("Ramdisk image is corrupt or invalid\n");
 234                 return 1;
 235         }
 236
 237 #if defined(CONFIG_OF_LIBFDT)
 238         /* find flattened device tree */
 239         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 240                            &images.ft_addr, &images.ft_len);
 241         if (ret) {
 242                 puts("Could not find a valid device tree\n");
 243                 return 1;
 244         }
 245         set_working_fdt_addr((ulong)images.ft_addr);
 246 #endif
 247
 248 #if defined(CONFIG_FIT)
 249         /* find all of the loadables */
 250         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 251                                NULL, NULL);
 252         if (ret) {
 253                 printf("Loadable(s) is corrupt or invalid\n");
 254                 return 1;
 255         }
 256 #endif
 257
 258         return 0;
 259 }
 260
 261 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 262                             char * const argv[])
 263 {
 264         if (((images.os.type == IH_TYPE_KERNEL) ||
 265              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 266              (images.os.type == IH_TYPE_MULTI)) &&
 267             (images.os.os == IH_OS_LINUX ||
 268                  images.os.os == IH_OS_VXWORKS))
 269                 return bootm_find_images(flag, argc, argv);
 270
 271         return 0;
 272 }
 273 #endif /* USE_HOSTC */
 274
 275 /**
 276  * print_decomp_msg() - Print a suitable decompression/loading message
 277  *
 278  * @type:       OS type (IH_OS_...)
 279  * @comp_type:  Compression type being used (IH_COMP_...)
 280  * @is_xip:     true if the load address matches the image start
 281  */
 282 static void print_decomp_msg(int comp_type, int type, bool is_xip)
 283 {
 284         const char *name = genimg_get_type_name(type);
 285
 286         if (comp_type == IH_COMP_NONE)
 287                 printf("   %s %s ... ", is_xip ? "XIP" : "Loading", name);
 288         else
 289                 printf("   Uncompressing %s ... ", name);
 290 }
 291
 292 /**
 293  * handle_decomp_error() - display a decompression error
 294  *
 295  * This function tries to produce a useful message. In the case where the
 296  * uncompressed size is the same as the available space, we can assume that
 297  * the image is too large for the buffer.
 298  *
 299  * @comp_type:          Compression type being used (IH_COMP_...)
 300  * @uncomp_size:        Number of bytes uncompressed
 301  * @unc_len:            Amount of space available for decompression
 302  * @ret:                Error code to report
 303  * @return BOOTM_ERR_RESET, indicating that the board must be reset
 304  */
 305 static int handle_decomp_error(int comp_type, size_t uncomp_size,
 306                                size_t unc_len, int ret)
 307 {
 308         const char *name = genimg_get_comp_name(comp_type);
 309
 310         if (uncomp_size >= unc_len)
 311                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 312         else
 313                 printf("%s: uncompress error %d\n", name, ret);
 314
 315         /*
 316          * The decompression routines are now safe, so will not write beyond
 317          * their bounds. Probably it is not necessary to reset, but maintain
 318          * the current behaviour for now.
 319          */
 320         printf("Must RESET board to recover\n");
 321 #ifndef USE_HOSTCC
 322         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 323 #endif
 324
 325         return BOOTM_ERR_RESET;
 326 }
 327
 328 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
 329                        void *load_buf, void *image_buf, ulong image_len,
 330                        uint unc_len, ulong *load_end)
 331 {
 332         int ret = 0;
 333
 334         *load_end = load;
 335         print_decomp_msg(comp, type, load == image_start);
 336
 337         /*
 338          * Load the image to the right place, decompressing if needed. After
 339          * this, image_len will be set to the number of uncompressed bytes
 340          * loaded, ret will be non-zero on error.
 341          */
 342         switch (comp) {
 343         case IH_COMP_NONE:
 344                 if (load == image_start)
 345                         break;
 346                 if (image_len <= unc_len)
 347                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 348                 else
 349                         ret = 1;
 350                 break;
 351 #ifdef CONFIG_GZIP
 352         case IH_COMP_GZIP: {
 353                 ret = gunzip(load_buf, unc_len, image_buf, &image_len);
 354                 break;
 355         }
 356 #endif /* CONFIG_GZIP */
 357 #ifdef CONFIG_BZIP2
 358         case IH_COMP_BZIP2: {
 359                 uint size = unc_len;
 360
 361                 /*
 362                  * If we've got less than 4 MB of malloc() space,
 363                  * use slower decompression algorithm which requires
 364                  * at most 2300 KB of memory.
 365                  */
 366                 ret = BZ2_bzBuffToBuffDecompress(load_buf, &size,
 367                         image_buf, image_len,
 368                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 369                 image_len = size;
 370                 break;
 371         }
 372 #endif /* CONFIG_BZIP2 */
 373 #ifdef CONFIG_LZMA
 374         case IH_COMP_LZMA: {
 375                 SizeT lzma_len = unc_len;
 376
 377                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 378                                                image_buf, image_len);
 379                 image_len = lzma_len;
 380                 break;
 381         }
 382 #endif /* CONFIG_LZMA */
 383 #ifdef CONFIG_LZO
 384         case IH_COMP_LZO: {
 385                 size_t size = unc_len;
 386
 387                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 388                 image_len = size;
 389                 break;
 390         }
 391 #endif /* CONFIG_LZO */
 392         default:
 393                 printf("Unimplemented compression type %d\n", comp);
 394                 return BOOTM_ERR_UNIMPLEMENTED;
 395         }
 396
 397         if (ret)
 398                 return handle_decomp_error(comp, image_len, unc_len, ret);
 399         *load_end = load + image_len;
 400
 401         puts("OK\n");
 402
 403         return 0;
 404 }
 405
 406 #ifndef USE_HOSTCC
 407 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
 408                          int boot_progress)
 409 {
 410         image_info_t os = images->os;
 411         ulong load = os.load;
 412         ulong blob_start = os.start;
 413         ulong blob_end = os.end;
 414         ulong image_start = os.image_start;
 415         ulong image_len = os.image_len;
 416         bool no_overlap;
 417         void *load_buf, *image_buf;
 418         int err;
 419
 420         load_buf = map_sysmem(load, 0);
 421         image_buf = map_sysmem(os.image_start, image_len);
 422         err = bootm_decomp_image(os.comp, load, os.image_start, os.type,
 423                                  load_buf, image_buf, image_len,
 424                                  CONFIG_SYS_BOOTM_LEN, load_end);
 425         if (err) {
 426                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 427                 return err;
 428         }
 429         flush_cache(load, (*load_end - load) * sizeof(ulong));
 430
 431         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 432         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 433
 434         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 435
 436         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
 437                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 438                       blob_start, blob_end);
 439                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 440                       *load_end);
 441
 442                 /* Check what type of image this is. */
 443                 if (images->legacy_hdr_valid) {
 444                         if (image_get_type(&images->legacy_hdr_os_copy)
 445                                         == IH_TYPE_MULTI)
 446                                 puts("WARNING: legacy format multi component image overwritten\n");
 447                         return BOOTM_ERR_OVERLAP;
 448                 } else {
 449                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 450                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 451                         return BOOTM_ERR_RESET;
 452                 }
 453         }
 454
 455         return 0;
 456 }
 457
 458 /**
 459  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 460  *
 461  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 462  *      enabled)
 463  */
 464 ulong bootm_disable_interrupts(void)
 465 {
 466         ulong iflag;
 467
 468         /*
 469          * We have reached the point of no return: we are going to
 470          * overwrite all exception vector code, so we cannot easily
 471          * recover from any failures any more...
 472          */
 473         iflag = disable_interrupts();
 474 #ifdef CONFIG_NETCONSOLE
 475         /* Stop the ethernet stack if NetConsole could have left it up */
 476         eth_halt();
 477         eth_unregister(eth_get_dev());
 478 #endif
 479
 480 #if defined(CONFIG_CMD_USB)
 481         /*
 482          * turn off USB to prevent the host controller from writing to the
 483          * SDRAM while Linux is booting. This could happen (at least for OHCI
 484          * controller), because the HCCA (Host Controller Communication Area)
 485          * lies within the SDRAM and the host controller writes continously to
 486          * this area (as busmaster!). The HccaFrameNumber is for example
 487          * updated every 1 ms within the HCCA structure in SDRAM! For more
 488          * details see the OpenHCI specification.
 489          */
 490         usb_stop();
 491 #endif
 492         return iflag;
 493 }
 494
 495 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 496
 497 #define CONSOLE_ARG     "console="
 498 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 499
 500 static void fixup_silent_linux(void)
 501 {
 502         char *buf;
 503         const char *env_val;
 504         char *cmdline = getenv("bootargs");
 505         int want_silent;
 506
 507         /*
 508          * Only fix cmdline when requested. The environment variable can be:
 509          *
 510          *      no - we never fixup
 511          *      yes - we always fixup
 512          *      unset - we rely on the console silent flag
 513          */
 514         want_silent = getenv_yesno("silent_linux");
 515         if (want_silent == 0)
 516                 return;
 517         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 518                 return;
 519
 520         debug("before silent fix-up: %s\n", cmdline);
 521         if (cmdline && (cmdline[0] != '\0')) {
 522                 char *start = strstr(cmdline, CONSOLE_ARG);
 523
 524                 /* Allocate space for maximum possible new command line */
 525                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 526                 if (!buf) {
 527                         debug("%s: out of memory\n", __func__);
 528                         return;
 529                 }
 530
 531                 if (start) {
 532                         char *end = strchr(start, ' ');
 533                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 534
 535                         strncpy(buf, cmdline, num_start_bytes);
 536                         if (end)
 537                                 strcpy(buf + num_start_bytes, end);
 538                         else
 539                                 buf[num_start_bytes] = '\0';
 540                 } else {
 541                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 542                 }
 543                 env_val = buf;
 544         } else {
 545                 buf = NULL;
 546                 env_val = CONSOLE_ARG;
 547         }
 548
 549         setenv("bootargs", env_val);
 550         debug("after silent fix-up: %s\n", env_val);
 551         free(buf);
 552 }
 553 #endif /* CONFIG_SILENT_CONSOLE */
 554
 555 /**
 556  * Execute selected states of the bootm command.
 557  *
 558  * Note the arguments to this state must be the first argument, Any 'bootm'
 559  * or sub-command arguments must have already been taken.
 560  *
 561  * Note that if states contains more than one flag it MUST contain
 562  * BOOTM_STATE_START, since this handles and consumes the command line args.
 563  *
 564  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 565  * functions we store the return value of in 'ret' may use a negative return
 566  * value, without special handling.
 567  *
 568  * @param cmdtp         Pointer to bootm command table entry
 569  * @param flag          Command flags (CMD_FLAG_...)
 570  * @param argc          Number of subcommand arguments (0 = no arguments)
 571  * @param argv          Arguments
 572  * @param states        Mask containing states to run (BOOTM_STATE_...)
 573  * @param images        Image header information
 574  * @param boot_progress 1 to show boot progress, 0 to not do this
 575  * @return 0 if ok, something else on error. Some errors will cause this
 576  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 577  *      then the intent is to boot an OS, so this function will not return
 578  *      unless the image type is standalone.
 579  */
 580 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 581                     int states, bootm_headers_t *images, int boot_progress)
 582 {
 583         boot_os_fn *boot_fn;
 584         ulong iflag = 0;
 585         int ret = 0, need_boot_fn;
 586
 587         images->state |= states;
 588
 589         /*
 590          * Work through the states and see how far we get. We stop on
 591          * any error.
 592          */
 593         if (states & BOOTM_STATE_START)
 594                 ret = bootm_start(cmdtp, flag, argc, argv);
 595
 596         if (!ret && (states & BOOTM_STATE_FINDOS))
 597                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 598
 599         if (!ret && (states & BOOTM_STATE_FINDOTHER)) {
 600                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 601                 argc = 0;       /* consume the args */
 602         }
 603
 604         /* Load the OS */
 605         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 606                 ulong load_end;
 607
 608                 iflag = bootm_disable_interrupts();
 609                 ret = bootm_load_os(images, &load_end, 0);
 610                 if (ret == 0)
 611                         lmb_reserve(&images->lmb, images->os.load,
 612                                     (load_end - images->os.load));
 613                 else if (ret && ret != BOOTM_ERR_OVERLAP)
 614                         goto err;
 615                 else if (ret == BOOTM_ERR_OVERLAP)
 616                         ret = 0;
 617 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 618                 if (images->os.os == IH_OS_LINUX)
 619                         fixup_silent_linux();
 620 #endif
 621         }
 622
 623         /* Relocate the ramdisk */
 624 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 625         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 626                 ulong rd_len = images->rd_end - images->rd_start;
 627
 628                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 629                         rd_len, &images->initrd_start, &images->initrd_end);
 630                 if (!ret) {
 631                         setenv_hex("initrd_start", images->initrd_start);
 632                         setenv_hex("initrd_end", images->initrd_end);
 633                 }
 634         }
 635 #endif
 636 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
 637         if (!ret && (states & BOOTM_STATE_FDT)) {
 638                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 639                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 640                                         &images->ft_len);
 641         }
 642 #endif
 643
 644         /* From now on, we need the OS boot function */
 645         if (ret)
 646                 return ret;
 647         boot_fn = bootm_os_get_boot_func(images->os.os);
 648         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 649                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 650                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 651         if (boot_fn == NULL && need_boot_fn) {
 652                 if (iflag)
 653                         enable_interrupts();
 654                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 655                        genimg_get_os_name(images->os.os), images->os.os);
 656                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 657                 return 1;
 658         }
 659
 660         /* Call various other states that are not generally used */
 661         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 662                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 663         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 664                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 665         if (!ret && (states & BOOTM_STATE_OS_PREP))
 666                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 667
 668 #ifdef CONFIG_TRACE
 669         /* Pretend to run the OS, then run a user command */
 670         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 671                 char *cmd_list = getenv("fakegocmd");
 672
 673                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 674                                 images, boot_fn);
 675                 if (!ret && cmd_list)
 676                         ret = run_command_list(cmd_list, -1, flag);
 677         }
 678 #endif
 679
 680         /* Check for unsupported subcommand. */
 681         if (ret) {
 682                 puts("subcommand not supported\n");
 683                 return ret;
 684         }
 685
 686         /* Now run the OS! We hope this doesn't return */
 687         if (!ret && (states & BOOTM_STATE_OS_GO))
 688                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 689                                 images, boot_fn);
 690
 691         /* Deal with any fallout */
 692 err:
 693         if (iflag)
 694                 enable_interrupts();
 695
 696         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 697                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 698         else if (ret == BOOTM_ERR_RESET)
 699                 do_reset(cmdtp, flag, argc, argv);
 700
 701         return ret;
 702 }
 703
 704 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 705 /**
 706  * image_get_kernel - verify legacy format kernel image
 707  * @img_addr: in RAM address of the legacy format image to be verified
 708  * @verify: data CRC verification flag
 709  *
 710  * image_get_kernel() verifies legacy image integrity and returns pointer to
 711  * legacy image header if image verification was completed successfully.
 712  *
 713  * returns:
 714  *     pointer to a legacy image header if valid image was found
 715  *     otherwise return NULL
 716  */
 717 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 718 {
 719         image_header_t *hdr = (image_header_t *)img_addr;
 720
 721         if (!image_check_magic(hdr)) {
 722                 puts("Bad Magic Number\n");
 723                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 724                 return NULL;
 725         }
 726         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 727
 728         if (!image_check_hcrc(hdr)) {
 729                 puts("Bad Header Checksum\n");
 730                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 731                 return NULL;
 732         }
 733
 734         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 735         image_print_contents(hdr);
 736
 737         if (verify) {
 738                 puts("   Verifying Checksum ... ");
 739                 if (!image_check_dcrc(hdr)) {
 740                         printf("Bad Data CRC\n");
 741                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 742                         return NULL;
 743                 }
 744                 puts("OK\n");
 745         }
 746         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 747
 748         if (!image_check_target_arch(hdr)) {
 749                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 750                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 751                 return NULL;
 752         }
 753         return hdr;
 754 }
 755 #endif
 756
 757 /**
 758  * boot_get_kernel - find kernel image
 759  * @os_data: pointer to a ulong variable, will hold os data start address
 760  * @os_len: pointer to a ulong variable, will hold os data length
 761  *
 762  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 763  * and locates kernel data.
 764  *
 765  * returns:
 766  *     pointer to image header if valid image was found, plus kernel start
 767  *     address and length, otherwise NULL
 768  */
 769 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 770                                    char * const argv[], bootm_headers_t *images,
 771                                    ulong *os_data, ulong *os_len)
 772 {
 773 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 774         image_header_t  *hdr;
 775 #endif
 776         ulong           img_addr;
 777         const void *buf;
 778         const char      *fit_uname_config = NULL;
 779         const char      *fit_uname_kernel = NULL;
 780 #if defined(CONFIG_FIT)
 781         int             os_noffset;
 782 #endif
 783
 784         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 785                                               &fit_uname_config,
 786                                               &fit_uname_kernel);
 787
 788         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 789
 790         /* copy from dataflash if needed */
 791         img_addr = genimg_get_image(img_addr);
 792
 793         /* check image type, for FIT images get FIT kernel node */
 794         *os_data = *os_len = 0;
 795         buf = map_sysmem(img_addr, 0);
 796         switch (genimg_get_format(buf)) {
 797 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 798         case IMAGE_FORMAT_LEGACY:
 799                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 800                        img_addr);
 801                 hdr = image_get_kernel(img_addr, images->verify);
 802                 if (!hdr)
 803                         return NULL;
 804                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 805
 806                 /* get os_data and os_len */
 807                 switch (image_get_type(hdr)) {
 808                 case IH_TYPE_KERNEL:
 809                 case IH_TYPE_KERNEL_NOLOAD:
 810                         *os_data = image_get_data(hdr);
 811                         *os_len = image_get_data_size(hdr);
 812                         break;
 813                 case IH_TYPE_MULTI:
 814                         image_multi_getimg(hdr, 0, os_data, os_len);
 815                         break;
 816                 case IH_TYPE_STANDALONE:
 817                         *os_data = image_get_data(hdr);
 818                         *os_len = image_get_data_size(hdr);
 819                         break;
 820                 default:
 821                         printf("Wrong Image Type for %s command\n",
 822                                cmdtp->name);
 823                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 824                         return NULL;
 825                 }
 826
 827                 /*
 828                  * copy image header to allow for image overwrites during
 829                  * kernel decompression.
 830                  */
 831                 memmove(&images->legacy_hdr_os_copy, hdr,
 832                         sizeof(image_header_t));
 833
 834                 /* save pointer to image header */
 835                 images->legacy_hdr_os = hdr;
 836
 837                 images->legacy_hdr_valid = 1;
 838                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 839                 break;
 840 #endif
 841 #if defined(CONFIG_FIT)
 842         case IMAGE_FORMAT_FIT:
 843                 os_noffset = fit_image_load(images, img_addr,
 844                                 &fit_uname_kernel, &fit_uname_config,
 845                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 846                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 847                                 FIT_LOAD_IGNORED, os_data, os_len);
 848                 if (os_noffset < 0)
 849                         return NULL;
 850
 851                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 852                 images->fit_uname_os = fit_uname_kernel;
 853                 images->fit_uname_cfg = fit_uname_config;
 854                 images->fit_noffset_os = os_noffset;
 855                 break;
 856 #endif
 857 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 858         case IMAGE_FORMAT_ANDROID:
 859                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 860                 if (android_image_get_kernel(buf, images->verify,
 861                                              os_data, os_len))
 862                         return NULL;
 863                 break;
 864 #endif
 865         default:
 866                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 867                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 868                 return NULL;
 869         }
 870
 871         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 872               *os_data, *os_len, *os_len);
 873
 874         return buf;
 875 }
 876 #else /* USE_HOSTCC */
 877
 878 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
 879 {
 880         memmove(to, from, len);
 881 }
 882
 883 static int bootm_host_load_image(const void *fit, int req_image_type)
 884 {
 885         const char *fit_uname_config = NULL;
 886         ulong data, len;
 887         bootm_headers_t images;
 888         int noffset;
 889         ulong load_end;
 890         uint8_t image_type;
 891         uint8_t imape_comp;
 892         void *load_buf;
 893         int ret;
 894
 895         memset(&images, '\0', sizeof(images));
 896         images.verify = 1;
 897         noffset = fit_image_load(&images, (ulong)fit,
 898                 NULL, &fit_uname_config,
 899                 IH_ARCH_DEFAULT, req_image_type, -1,
 900                 FIT_LOAD_IGNORED, &data, &len);
 901         if (noffset < 0)
 902                 return noffset;
 903         if (fit_image_get_type(fit, noffset, &image_type)) {
 904                 puts("Can't get image type!\n");
 905                 return -EINVAL;
 906         }
 907
 908         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 909                 puts("Can't get image compression!\n");
 910                 return -EINVAL;
 911         }
 912
 913         /* Allow the image to expand by a factor of 4, should be safe */
 914         load_buf = malloc((1 << 20) + len * 4);
 915         ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf,
 916                                  (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 917                                  &load_end);
 918         free(load_buf);
 919
 920         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
 921                 return ret;
 922
 923         return 0;
 924 }
 925
 926 int bootm_host_load_images(const void *fit, int cfg_noffset)
 927 {
 928         static uint8_t image_types[] = {
 929                 IH_TYPE_KERNEL,
 930                 IH_TYPE_FLATDT,
 931                 IH_TYPE_RAMDISK,
 932         };
 933         int err = 0;
 934         int i;
 935
 936         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 937                 int ret;
 938
 939                 ret = bootm_host_load_image(fit, image_types[i]);
 940                 if (!err && ret && ret != -ENOENT)
 941                         err = ret;
 942         }
 943
 944         /* Return the first error we found */
 945         return err;
 946 }
 947
 948 #endif /* ndef USE_HOSTCC */