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 <bzlib.h>
  11 #include <errno.h>
  12 #include <fdt_support.h>
  13 #include <lmb.h>
  14 #include <malloc.h>
  15 #include <mapmem.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 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
  44
  45 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  46                                    char * const argv[], bootm_headers_t *images,
  47                                    ulong *os_data, ulong *os_len);
  48
  49 __weak void board_quiesce_devices(void)
  50 {
  51 }
  52
  53 #ifdef CONFIG_LMB
  54 static void boot_start_lmb(bootm_headers_t *images)
  55 {
  56         ulong           mem_start;
  57         phys_size_t     mem_size;
  58
  59         lmb_init(&images->lmb);
  60
  61         mem_start = env_get_bootm_low();
  62         mem_size = env_get_bootm_size();
  63
  64         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
  65
  66         arch_lmb_reserve(&images->lmb);
  67         board_lmb_reserve(&images->lmb);
  68 }
  69 #else
  70 #define lmb_reserve(lmb, base, size)
  71 static inline void boot_start_lmb(bootm_headers_t *images) { }
  72 #endif
  73
  74 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
  75                        char * const argv[])
  76 {
  77         memset((void *)&images, 0, sizeof(images));
  78         images.verify = env_get_yesno("verify");
  79
  80         boot_start_lmb(&images);
  81
  82         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  83         images.state = BOOTM_STATE_START;
  84
  85         return 0;
  86 }
  87
  88 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
  89                          char * const argv[])
  90 {
  91         const void *os_hdr;
  92         bool ep_found = false;
  93         int ret;
  94
  95         /* get kernel image header, start address and length */
  96         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  97                         &images, &images.os.image_start, &images.os.image_len);
  98         if (images.os.image_len == 0) {
  99                 puts("ERROR: can't get kernel image!\n");
 100                 return 1;
 101         }
 102
 103         /* get image parameters */
 104         switch (genimg_get_format(os_hdr)) {
 105 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 106         case IMAGE_FORMAT_LEGACY:
 107                 images.os.type = image_get_type(os_hdr);
 108                 images.os.comp = image_get_comp(os_hdr);
 109                 images.os.os = image_get_os(os_hdr);
 110
 111                 images.os.end = image_get_image_end(os_hdr);
 112                 images.os.load = image_get_load(os_hdr);
 113                 images.os.arch = image_get_arch(os_hdr);
 114                 break;
 115 #endif
 116 #if IMAGE_ENABLE_FIT
 117         case IMAGE_FORMAT_FIT:
 118                 if (fit_image_get_type(images.fit_hdr_os,
 119                                        images.fit_noffset_os,
 120                                        &images.os.type)) {
 121                         puts("Can't get image type!\n");
 122                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 123                         return 1;
 124                 }
 125
 126                 if (fit_image_get_comp(images.fit_hdr_os,
 127                                        images.fit_noffset_os,
 128                                        &images.os.comp)) {
 129                         puts("Can't get image compression!\n");
 130                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 131                         return 1;
 132                 }
 133
 134                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 135                                      &images.os.os)) {
 136                         puts("Can't get image OS!\n");
 137                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 138                         return 1;
 139                 }
 140
 141                 if (fit_image_get_arch(images.fit_hdr_os,
 142                                        images.fit_noffset_os,
 143                                        &images.os.arch)) {
 144                         puts("Can't get image ARCH!\n");
 145                         return 1;
 146                 }
 147
 148                 images.os.end = fit_get_end(images.fit_hdr_os);
 149
 150                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 151                                        &images.os.load)) {
 152                         puts("Can't get image load address!\n");
 153                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 154                         return 1;
 155                 }
 156                 break;
 157 #endif
 158 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 159         case IMAGE_FORMAT_ANDROID:
 160                 images.os.type = IH_TYPE_KERNEL;
 161                 images.os.comp = IH_COMP_NONE;
 162                 images.os.os = IH_OS_LINUX;
 163
 164                 images.os.end = android_image_get_end(os_hdr);
 165                 images.os.load = android_image_get_kload(os_hdr);
 166                 images.ep = images.os.load;
 167                 ep_found = true;
 168                 break;
 169 #endif
 170         default:
 171                 puts("ERROR: unknown image format type!\n");
 172                 return 1;
 173         }
 174
 175         /* If we have a valid setup.bin, we will use that for entry (x86) */
 176         if (images.os.arch == IH_ARCH_I386 ||
 177             images.os.arch == IH_ARCH_X86_64) {
 178                 ulong len;
 179
 180                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 181                 if (ret < 0 && ret != -ENOENT) {
 182                         puts("Could not find a valid setup.bin for x86\n");
 183                         return 1;
 184                 }
 185                 /* Kernel entry point is the setup.bin */
 186         } else if (images.legacy_hdr_valid) {
 187                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 188 #if IMAGE_ENABLE_FIT
 189         } else if (images.fit_uname_os) {
 190                 int ret;
 191
 192                 ret = fit_image_get_entry(images.fit_hdr_os,
 193                                           images.fit_noffset_os, &images.ep);
 194                 if (ret) {
 195                         puts("Can't get entry point property!\n");
 196                         return 1;
 197                 }
 198 #endif
 199         } else if (!ep_found) {
 200                 puts("Could not find kernel entry point!\n");
 201                 return 1;
 202         }
 203
 204         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 205                 images.os.load = images.os.image_start;
 206                 images.ep += images.os.load;
 207         }
 208
 209         images.os.start = map_to_sysmem(os_hdr);
 210
 211         return 0;
 212 }
 213
 214 /**
 215  * bootm_find_images - wrapper to find and locate various images
 216  * @flag: Ignored Argument
 217  * @argc: command argument count
 218  * @argv: command argument list
 219  *
 220  * boot_find_images() will attempt to load an available ramdisk,
 221  * flattened device tree, as well as specifically marked
 222  * "loadable" images (loadables are FIT only)
 223  *
 224  * Note: bootm_find_images will skip an image if it is not found
 225  *
 226  * @return:
 227  *     0, if all existing images were loaded correctly
 228  *     1, if an image is found but corrupted, or invalid
 229  */
 230 int bootm_find_images(int flag, int argc, char * const argv[])
 231 {
 232         int ret;
 233
 234         /* find ramdisk */
 235         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 236                                &images.rd_start, &images.rd_end);
 237         if (ret) {
 238                 puts("Ramdisk image is corrupt or invalid\n");
 239                 return 1;
 240         }
 241
 242 #if IMAGE_ENABLE_OF_LIBFDT
 243         /* find flattened device tree */
 244         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 245                            &images.ft_addr, &images.ft_len);
 246         if (ret) {
 247                 puts("Could not find a valid device tree\n");
 248                 return 1;
 249         }
 250         set_working_fdt_addr((ulong)images.ft_addr);
 251 #endif
 252
 253 #if IMAGE_ENABLE_FIT
 254 #if defined(CONFIG_FPGA)
 255         /* find bitstreams */
 256         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 257                             NULL, NULL);
 258         if (ret) {
 259                 printf("FPGA image is corrupted or invalid\n");
 260                 return 1;
 261         }
 262 #endif
 263
 264         /* find all of the loadables */
 265         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 266                                NULL, NULL);
 267         if (ret) {
 268                 printf("Loadable(s) is corrupt or invalid\n");
 269                 return 1;
 270         }
 271 #endif
 272
 273         return 0;
 274 }
 275
 276 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 277                             char * const argv[])
 278 {
 279         if (((images.os.type == IH_TYPE_KERNEL) ||
 280              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 281              (images.os.type == IH_TYPE_MULTI)) &&
 282             (images.os.os == IH_OS_LINUX ||
 283                  images.os.os == IH_OS_VXWORKS))
 284                 return bootm_find_images(flag, argc, argv);
 285
 286         return 0;
 287 }
 288 #endif /* USE_HOSTC */
 289
 290 /**
 291  * print_decomp_msg() - Print a suitable decompression/loading message
 292  *
 293  * @type:       OS type (IH_OS_...)
 294  * @comp_type:  Compression type being used (IH_COMP_...)
 295  * @is_xip:     true if the load address matches the image start
 296  */
 297 static void print_decomp_msg(int comp_type, int type, bool is_xip)
 298 {
 299         const char *name = genimg_get_type_name(type);
 300
 301         if (comp_type == IH_COMP_NONE)
 302                 printf("   %s %s ... ", is_xip ? "XIP" : "Loading", name);
 303         else
 304                 printf("   Uncompressing %s ... ", name);
 305 }
 306
 307 /**
 308  * handle_decomp_error() - display a decompression error
 309  *
 310  * This function tries to produce a useful message. In the case where the
 311  * uncompressed size is the same as the available space, we can assume that
 312  * the image is too large for the buffer.
 313  *
 314  * @comp_type:          Compression type being used (IH_COMP_...)
 315  * @uncomp_size:        Number of bytes uncompressed
 316  * @unc_len:            Amount of space available for decompression
 317  * @ret:                Error code to report
 318  * @return BOOTM_ERR_RESET, indicating that the board must be reset
 319  */
 320 static int handle_decomp_error(int comp_type, size_t uncomp_size,
 321                                size_t unc_len, int ret)
 322 {
 323         const char *name = genimg_get_comp_name(comp_type);
 324
 325         if (uncomp_size >= unc_len)
 326                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 327         else
 328                 printf("%s: uncompress error %d\n", name, ret);
 329
 330         /*
 331          * The decompression routines are now safe, so will not write beyond
 332          * their bounds. Probably it is not necessary to reset, but maintain
 333          * the current behaviour for now.
 334          */
 335         printf("Must RESET board to recover\n");
 336 #ifndef USE_HOSTCC
 337         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 338 #endif
 339
 340         return BOOTM_ERR_RESET;
 341 }
 342
 343 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
 344                        void *load_buf, void *image_buf, ulong image_len,
 345                        uint unc_len, ulong *load_end)
 346 {
 347         int ret = 0;
 348
 349         *load_end = load;
 350         print_decomp_msg(comp, type, load == image_start);
 351
 352         /*
 353          * Load the image to the right place, decompressing if needed. After
 354          * this, image_len will be set to the number of uncompressed bytes
 355          * loaded, ret will be non-zero on error.
 356          */
 357         switch (comp) {
 358         case IH_COMP_NONE:
 359                 if (load == image_start)
 360                         break;
 361                 if (image_len <= unc_len)
 362                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 363                 else
 364                         ret = 1;
 365                 break;
 366 #ifdef CONFIG_GZIP
 367         case IH_COMP_GZIP: {
 368                 ret = gunzip(load_buf, unc_len, image_buf, &image_len);
 369                 break;
 370         }
 371 #endif /* CONFIG_GZIP */
 372 #ifdef CONFIG_BZIP2
 373         case IH_COMP_BZIP2: {
 374                 uint size = unc_len;
 375
 376                 /*
 377                  * If we've got less than 4 MB of malloc() space,
 378                  * use slower decompression algorithm which requires
 379                  * at most 2300 KB of memory.
 380                  */
 381                 ret = BZ2_bzBuffToBuffDecompress(load_buf, &size,
 382                         image_buf, image_len,
 383                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 384                 image_len = size;
 385                 break;
 386         }
 387 #endif /* CONFIG_BZIP2 */
 388 #ifdef CONFIG_LZMA
 389         case IH_COMP_LZMA: {
 390                 SizeT lzma_len = unc_len;
 391
 392                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 393                                                image_buf, image_len);
 394                 image_len = lzma_len;
 395                 break;
 396         }
 397 #endif /* CONFIG_LZMA */
 398 #ifdef CONFIG_LZO
 399         case IH_COMP_LZO: {
 400                 size_t size = unc_len;
 401
 402                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 403                 image_len = size;
 404                 break;
 405         }
 406 #endif /* CONFIG_LZO */
 407 #ifdef CONFIG_LZ4
 408         case IH_COMP_LZ4: {
 409                 size_t size = unc_len;
 410
 411                 ret = ulz4fn(image_buf, image_len, load_buf, &size);
 412                 image_len = size;
 413                 break;
 414         }
 415 #endif /* CONFIG_LZ4 */
 416         default:
 417                 printf("Unimplemented compression type %d\n", comp);
 418                 return BOOTM_ERR_UNIMPLEMENTED;
 419         }
 420
 421         if (ret)
 422                 return handle_decomp_error(comp, image_len, unc_len, ret);
 423         *load_end = load + image_len;
 424
 425         puts("OK\n");
 426
 427         return 0;
 428 }
 429
 430 #ifndef USE_HOSTCC
 431 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
 432 {
 433         image_info_t os = images->os;
 434         ulong load = os.load;
 435         ulong load_end;
 436         ulong blob_start = os.start;
 437         ulong blob_end = os.end;
 438         ulong image_start = os.image_start;
 439         ulong image_len = os.image_len;
 440         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 441         ulong flush_len;
 442         bool no_overlap;
 443         void *load_buf, *image_buf;
 444         int err;
 445
 446         load_buf = map_sysmem(load, 0);
 447         image_buf = map_sysmem(os.image_start, image_len);
 448         err = bootm_decomp_image(os.comp, load, os.image_start, os.type,
 449                                  load_buf, image_buf, image_len,
 450                                  CONFIG_SYS_BOOTM_LEN, &load_end);
 451         if (err) {
 452                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 453                 return err;
 454         }
 455
 456         flush_len = load_end - load;
 457         if (flush_start < load)
 458                 flush_len += load - flush_start;
 459
 460         flush_cache(flush_start, ALIGN(flush_len, ARCH_DMA_MINALIGN));
 461
 462         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 463         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 464
 465         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 466
 467         if (!no_overlap && load < blob_end && load_end > blob_start) {
 468                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 469                       blob_start, blob_end);
 470                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 471                       load_end);
 472
 473                 /* Check what type of image this is. */
 474                 if (images->legacy_hdr_valid) {
 475                         if (image_get_type(&images->legacy_hdr_os_copy)
 476                                         == IH_TYPE_MULTI)
 477                                 puts("WARNING: legacy format multi component image overwritten\n");
 478                         return BOOTM_ERR_OVERLAP;
 479                 } else {
 480                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 481                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 482                         return BOOTM_ERR_RESET;
 483                 }
 484         }
 485
 486         lmb_reserve(&images->lmb, images->os.load, (load_end -
 487                                                     images->os.load));
 488         return 0;
 489 }
 490
 491 /**
 492  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 493  *
 494  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 495  *      enabled)
 496  */
 497 ulong bootm_disable_interrupts(void)
 498 {
 499         ulong iflag;
 500
 501         /*
 502          * We have reached the point of no return: we are going to
 503          * overwrite all exception vector code, so we cannot easily
 504          * recover from any failures any more...
 505          */
 506         iflag = disable_interrupts();
 507 #ifdef CONFIG_NETCONSOLE
 508         /* Stop the ethernet stack if NetConsole could have left it up */
 509         eth_halt();
 510 # ifndef CONFIG_DM_ETH
 511         eth_unregister(eth_get_dev());
 512 # endif
 513 #endif
 514
 515 #if defined(CONFIG_CMD_USB)
 516         /*
 517          * turn off USB to prevent the host controller from writing to the
 518          * SDRAM while Linux is booting. This could happen (at least for OHCI
 519          * controller), because the HCCA (Host Controller Communication Area)
 520          * lies within the SDRAM and the host controller writes continously to
 521          * this area (as busmaster!). The HccaFrameNumber is for example
 522          * updated every 1 ms within the HCCA structure in SDRAM! For more
 523          * details see the OpenHCI specification.
 524          */
 525         usb_stop();
 526 #endif
 527         return iflag;
 528 }
 529
 530 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 531
 532 #define CONSOLE_ARG     "console="
 533 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 534
 535 static void fixup_silent_linux(void)
 536 {
 537         char *buf;
 538         const char *env_val;
 539         char *cmdline = env_get("bootargs");
 540         int want_silent;
 541
 542         /*
 543          * Only fix cmdline when requested. The environment variable can be:
 544          *
 545          *      no - we never fixup
 546          *      yes - we always fixup
 547          *      unset - we rely on the console silent flag
 548          */
 549         want_silent = env_get_yesno("silent_linux");
 550         if (want_silent == 0)
 551                 return;
 552         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 553                 return;
 554
 555         debug("before silent fix-up: %s\n", cmdline);
 556         if (cmdline && (cmdline[0] != '\0')) {
 557                 char *start = strstr(cmdline, CONSOLE_ARG);
 558
 559                 /* Allocate space for maximum possible new command line */
 560                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 561                 if (!buf) {
 562                         debug("%s: out of memory\n", __func__);
 563                         return;
 564                 }
 565
 566                 if (start) {
 567                         char *end = strchr(start, ' ');
 568                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 569
 570                         strncpy(buf, cmdline, num_start_bytes);
 571                         if (end)
 572                                 strcpy(buf + num_start_bytes, end);
 573                         else
 574                                 buf[num_start_bytes] = '\0';
 575                 } else {
 576                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 577                 }
 578                 env_val = buf;
 579         } else {
 580                 buf = NULL;
 581                 env_val = CONSOLE_ARG;
 582         }
 583
 584         env_set("bootargs", env_val);
 585         debug("after silent fix-up: %s\n", env_val);
 586         free(buf);
 587 }
 588 #endif /* CONFIG_SILENT_CONSOLE */
 589
 590 /**
 591  * Execute selected states of the bootm command.
 592  *
 593  * Note the arguments to this state must be the first argument, Any 'bootm'
 594  * or sub-command arguments must have already been taken.
 595  *
 596  * Note that if states contains more than one flag it MUST contain
 597  * BOOTM_STATE_START, since this handles and consumes the command line args.
 598  *
 599  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 600  * functions we store the return value of in 'ret' may use a negative return
 601  * value, without special handling.
 602  *
 603  * @param cmdtp         Pointer to bootm command table entry
 604  * @param flag          Command flags (CMD_FLAG_...)
 605  * @param argc          Number of subcommand arguments (0 = no arguments)
 606  * @param argv          Arguments
 607  * @param states        Mask containing states to run (BOOTM_STATE_...)
 608  * @param images        Image header information
 609  * @param boot_progress 1 to show boot progress, 0 to not do this
 610  * @return 0 if ok, something else on error. Some errors will cause this
 611  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 612  *      then the intent is to boot an OS, so this function will not return
 613  *      unless the image type is standalone.
 614  */
 615 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 616                     int states, bootm_headers_t *images, int boot_progress)
 617 {
 618         boot_os_fn *boot_fn;
 619         ulong iflag = 0;
 620         int ret = 0, need_boot_fn;
 621
 622         images->state |= states;
 623
 624         /*
 625          * Work through the states and see how far we get. We stop on
 626          * any error.
 627          */
 628         if (states & BOOTM_STATE_START)
 629                 ret = bootm_start(cmdtp, flag, argc, argv);
 630
 631         if (!ret && (states & BOOTM_STATE_FINDOS))
 632                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 633
 634         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 635                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 636
 637         /* Load the OS */
 638         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 639                 iflag = bootm_disable_interrupts();
 640                 ret = bootm_load_os(images, 0);
 641                 if (ret && ret != BOOTM_ERR_OVERLAP)
 642                         goto err;
 643                 else if (ret == BOOTM_ERR_OVERLAP)
 644                         ret = 0;
 645         }
 646
 647         /* Relocate the ramdisk */
 648 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 649         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 650                 ulong rd_len = images->rd_end - images->rd_start;
 651
 652                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 653                         rd_len, &images->initrd_start, &images->initrd_end);
 654                 if (!ret) {
 655                         env_set_hex("initrd_start", images->initrd_start);
 656                         env_set_hex("initrd_end", images->initrd_end);
 657                 }
 658         }
 659 #endif
 660 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
 661         if (!ret && (states & BOOTM_STATE_FDT)) {
 662                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 663                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 664                                         &images->ft_len);
 665         }
 666 #endif
 667
 668         /* From now on, we need the OS boot function */
 669         if (ret)
 670                 return ret;
 671         boot_fn = bootm_os_get_boot_func(images->os.os);
 672         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 673                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 674                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 675         if (boot_fn == NULL && need_boot_fn) {
 676                 if (iflag)
 677                         enable_interrupts();
 678                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 679                        genimg_get_os_name(images->os.os), images->os.os);
 680                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 681                 return 1;
 682         }
 683
 684
 685         /* Call various other states that are not generally used */
 686         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 687                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 688         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 689                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 690         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 691 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 692                 if (images->os.os == IH_OS_LINUX)
 693                         fixup_silent_linux();
 694 #endif
 695                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 696         }
 697
 698 #ifdef CONFIG_TRACE
 699         /* Pretend to run the OS, then run a user command */
 700         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 701                 char *cmd_list = env_get("fakegocmd");
 702
 703                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 704                                 images, boot_fn);
 705                 if (!ret && cmd_list)
 706                         ret = run_command_list(cmd_list, -1, flag);
 707         }
 708 #endif
 709
 710         /* Check for unsupported subcommand. */
 711         if (ret) {
 712                 puts("subcommand not supported\n");
 713                 return ret;
 714         }
 715
 716         /* Now run the OS! We hope this doesn't return */
 717         if (!ret && (states & BOOTM_STATE_OS_GO))
 718                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 719                                 images, boot_fn);
 720
 721         /* Deal with any fallout */
 722 err:
 723         if (iflag)
 724                 enable_interrupts();
 725
 726         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 727                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 728         else if (ret == BOOTM_ERR_RESET)
 729                 do_reset(cmdtp, flag, argc, argv);
 730
 731         return ret;
 732 }
 733
 734 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 735 /**
 736  * image_get_kernel - verify legacy format kernel image
 737  * @img_addr: in RAM address of the legacy format image to be verified
 738  * @verify: data CRC verification flag
 739  *
 740  * image_get_kernel() verifies legacy image integrity and returns pointer to
 741  * legacy image header if image verification was completed successfully.
 742  *
 743  * returns:
 744  *     pointer to a legacy image header if valid image was found
 745  *     otherwise return NULL
 746  */
 747 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 748 {
 749         image_header_t *hdr = (image_header_t *)img_addr;
 750
 751         if (!image_check_magic(hdr)) {
 752                 puts("Bad Magic Number\n");
 753                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 754                 return NULL;
 755         }
 756         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 757
 758         if (!image_check_hcrc(hdr)) {
 759                 puts("Bad Header Checksum\n");
 760                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 761                 return NULL;
 762         }
 763
 764         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 765         image_print_contents(hdr);
 766
 767         if (verify) {
 768                 puts("   Verifying Checksum ... ");
 769                 if (!image_check_dcrc(hdr)) {
 770                         printf("Bad Data CRC\n");
 771                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 772                         return NULL;
 773                 }
 774                 puts("OK\n");
 775         }
 776         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 777
 778         if (!image_check_target_arch(hdr)) {
 779                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 780                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 781                 return NULL;
 782         }
 783         return hdr;
 784 }
 785 #endif
 786
 787 /**
 788  * boot_get_kernel - find kernel image
 789  * @os_data: pointer to a ulong variable, will hold os data start address
 790  * @os_len: pointer to a ulong variable, will hold os data length
 791  *
 792  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 793  * and locates kernel data.
 794  *
 795  * returns:
 796  *     pointer to image header if valid image was found, plus kernel start
 797  *     address and length, otherwise NULL
 798  */
 799 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 800                                    char * const argv[], bootm_headers_t *images,
 801                                    ulong *os_data, ulong *os_len)
 802 {
 803 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 804         image_header_t  *hdr;
 805 #endif
 806         ulong           img_addr;
 807         const void *buf;
 808         const char      *fit_uname_config = NULL;
 809         const char      *fit_uname_kernel = NULL;
 810 #if IMAGE_ENABLE_FIT
 811         int             os_noffset;
 812 #endif
 813
 814         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 815                                               &fit_uname_config,
 816                                               &fit_uname_kernel);
 817
 818         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 819
 820         /* check image type, for FIT images get FIT kernel node */
 821         *os_data = *os_len = 0;
 822         buf = map_sysmem(img_addr, 0);
 823         switch (genimg_get_format(buf)) {
 824 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 825         case IMAGE_FORMAT_LEGACY:
 826                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 827                        img_addr);
 828                 hdr = image_get_kernel(img_addr, images->verify);
 829                 if (!hdr)
 830                         return NULL;
 831                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 832
 833                 /* get os_data and os_len */
 834                 switch (image_get_type(hdr)) {
 835                 case IH_TYPE_KERNEL:
 836                 case IH_TYPE_KERNEL_NOLOAD:
 837                         *os_data = image_get_data(hdr);
 838                         *os_len = image_get_data_size(hdr);
 839                         break;
 840                 case IH_TYPE_MULTI:
 841                         image_multi_getimg(hdr, 0, os_data, os_len);
 842                         break;
 843                 case IH_TYPE_STANDALONE:
 844                         *os_data = image_get_data(hdr);
 845                         *os_len = image_get_data_size(hdr);
 846                         break;
 847                 default:
 848                         printf("Wrong Image Type for %s command\n",
 849                                cmdtp->name);
 850                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 851                         return NULL;
 852                 }
 853
 854                 /*
 855                  * copy image header to allow for image overwrites during
 856                  * kernel decompression.
 857                  */
 858                 memmove(&images->legacy_hdr_os_copy, hdr,
 859                         sizeof(image_header_t));
 860
 861                 /* save pointer to image header */
 862                 images->legacy_hdr_os = hdr;
 863
 864                 images->legacy_hdr_valid = 1;
 865                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 866                 break;
 867 #endif
 868 #if IMAGE_ENABLE_FIT
 869         case IMAGE_FORMAT_FIT:
 870                 os_noffset = fit_image_load(images, img_addr,
 871                                 &fit_uname_kernel, &fit_uname_config,
 872                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 873                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 874                                 FIT_LOAD_IGNORED, os_data, os_len);
 875                 if (os_noffset < 0)
 876                         return NULL;
 877
 878                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 879                 images->fit_uname_os = fit_uname_kernel;
 880                 images->fit_uname_cfg = fit_uname_config;
 881                 images->fit_noffset_os = os_noffset;
 882                 break;
 883 #endif
 884 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 885         case IMAGE_FORMAT_ANDROID:
 886                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 887                 if (android_image_get_kernel(buf, images->verify,
 888                                              os_data, os_len))
 889                         return NULL;
 890                 break;
 891 #endif
 892         default:
 893                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 894                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 895                 return NULL;
 896         }
 897
 898         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 899               *os_data, *os_len, *os_len);
 900
 901         return buf;
 902 }
 903 #else /* USE_HOSTCC */
 904
 905 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
 906 {
 907         memmove(to, from, len);
 908 }
 909
 910 static int bootm_host_load_image(const void *fit, int req_image_type)
 911 {
 912         const char *fit_uname_config = NULL;
 913         ulong data, len;
 914         bootm_headers_t images;
 915         int noffset;
 916         ulong load_end;
 917         uint8_t image_type;
 918         uint8_t imape_comp;
 919         void *load_buf;
 920         int ret;
 921
 922         memset(&images, '\0', sizeof(images));
 923         images.verify = 1;
 924         noffset = fit_image_load(&images, (ulong)fit,
 925                 NULL, &fit_uname_config,
 926                 IH_ARCH_DEFAULT, req_image_type, -1,
 927                 FIT_LOAD_IGNORED, &data, &len);
 928         if (noffset < 0)
 929                 return noffset;
 930         if (fit_image_get_type(fit, noffset, &image_type)) {
 931                 puts("Can't get image type!\n");
 932                 return -EINVAL;
 933         }
 934
 935         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 936                 puts("Can't get image compression!\n");
 937                 return -EINVAL;
 938         }
 939
 940         /* Allow the image to expand by a factor of 4, should be safe */
 941         load_buf = malloc((1 << 20) + len * 4);
 942         ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf,
 943                                  (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 944                                  &load_end);
 945         free(load_buf);
 946
 947         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
 948                 return ret;
 949
 950         return 0;
 951 }
 952
 953 int bootm_host_load_images(const void *fit, int cfg_noffset)
 954 {
 955         static uint8_t image_types[] = {
 956                 IH_TYPE_KERNEL,
 957                 IH_TYPE_FLATDT,
 958                 IH_TYPE_RAMDISK,
 959         };
 960         int err = 0;
 961         int i;
 962
 963         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 964                 int ret;
 965
 966                 ret = bootm_host_load_image(fit, image_types[i]);
 967                 if (!err && ret && ret != -ENOENT)
 968                         err = ret;
 969         }
 970
 971         /* Return the first error we found */
 972         return err;
 973 }
 974
 975 #endif /* ndef USE_HOSTCC */