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                 if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
 206                     images.os.arch == IH_ARCH_ARM64) {
 207                         ulong image_addr;
 208                         ulong image_size;
 209
 210                         ret = booti_setup(images.os.image_start, &image_addr,
 211                                           &image_size, true);
 212                         if (ret != 0)
 213                                 return 1;
 214
 215                         images.os.type = IH_TYPE_KERNEL;
 216                         images.os.load = image_addr;
 217                         images.ep = image_addr;
 218                 } else {
 219                         images.os.load = images.os.image_start;
 220                         images.ep += images.os.image_start;
 221                 }
 222         }
 223
 224         images.os.start = map_to_sysmem(os_hdr);
 225
 226         return 0;
 227 }
 228
 229 /**
 230  * bootm_find_images - wrapper to find and locate various images
 231  * @flag: Ignored Argument
 232  * @argc: command argument count
 233  * @argv: command argument list
 234  *
 235  * boot_find_images() will attempt to load an available ramdisk,
 236  * flattened device tree, as well as specifically marked
 237  * "loadable" images (loadables are FIT only)
 238  *
 239  * Note: bootm_find_images will skip an image if it is not found
 240  *
 241  * @return:
 242  *     0, if all existing images were loaded correctly
 243  *     1, if an image is found but corrupted, or invalid
 244  */
 245 int bootm_find_images(int flag, int argc, char * const argv[])
 246 {
 247         int ret;
 248
 249         /* find ramdisk */
 250         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 251                                &images.rd_start, &images.rd_end);
 252         if (ret) {
 253                 puts("Ramdisk image is corrupt or invalid\n");
 254                 return 1;
 255         }
 256
 257 #if IMAGE_ENABLE_OF_LIBFDT
 258         /* find flattened device tree */
 259         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 260                            &images.ft_addr, &images.ft_len);
 261         if (ret) {
 262                 puts("Could not find a valid device tree\n");
 263                 return 1;
 264         }
 265         if (CONFIG_IS_ENABLED(CMD_FDT))
 266                 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
 267 #endif
 268
 269 #if IMAGE_ENABLE_FIT
 270 #if defined(CONFIG_FPGA)
 271         /* find bitstreams */
 272         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 273                             NULL, NULL);
 274         if (ret) {
 275                 printf("FPGA image is corrupted or invalid\n");
 276                 return 1;
 277         }
 278 #endif
 279
 280         /* find all of the loadables */
 281         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 282                                NULL, NULL);
 283         if (ret) {
 284                 printf("Loadable(s) is corrupt or invalid\n");
 285                 return 1;
 286         }
 287 #endif
 288
 289         return 0;
 290 }
 291
 292 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 293                             char * const argv[])
 294 {
 295         if (((images.os.type == IH_TYPE_KERNEL) ||
 296              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 297              (images.os.type == IH_TYPE_MULTI)) &&
 298             (images.os.os == IH_OS_LINUX ||
 299                  images.os.os == IH_OS_VXWORKS))
 300                 return bootm_find_images(flag, argc, argv);
 301
 302         return 0;
 303 }
 304 #endif /* USE_HOSTC */
 305
 306 /**
 307  * print_decomp_msg() - Print a suitable decompression/loading message
 308  *
 309  * @type:       OS type (IH_OS_...)
 310  * @comp_type:  Compression type being used (IH_COMP_...)
 311  * @is_xip:     true if the load address matches the image start
 312  */
 313 static void print_decomp_msg(int comp_type, int type, bool is_xip)
 314 {
 315         const char *name = genimg_get_type_name(type);
 316
 317         if (comp_type == IH_COMP_NONE)
 318                 printf("   %s %s ... ", is_xip ? "XIP" : "Loading", name);
 319         else
 320                 printf("   Uncompressing %s ... ", name);
 321 }
 322
 323 /**
 324  * handle_decomp_error() - display a decompression error
 325  *
 326  * This function tries to produce a useful message. In the case where the
 327  * uncompressed size is the same as the available space, we can assume that
 328  * the image is too large for the buffer.
 329  *
 330  * @comp_type:          Compression type being used (IH_COMP_...)
 331  * @uncomp_size:        Number of bytes uncompressed
 332  * @unc_len:            Amount of space available for decompression
 333  * @ret:                Error code to report
 334  * @return BOOTM_ERR_RESET, indicating that the board must be reset
 335  */
 336 static int handle_decomp_error(int comp_type, size_t uncomp_size,
 337                                size_t unc_len, int ret)
 338 {
 339         const char *name = genimg_get_comp_name(comp_type);
 340
 341         if (uncomp_size >= unc_len)
 342                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 343         else
 344                 printf("%s: uncompress error %d\n", name, ret);
 345
 346         /*
 347          * The decompression routines are now safe, so will not write beyond
 348          * their bounds. Probably it is not necessary to reset, but maintain
 349          * the current behaviour for now.
 350          */
 351         printf("Must RESET board to recover\n");
 352 #ifndef USE_HOSTCC
 353         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 354 #endif
 355
 356         return BOOTM_ERR_RESET;
 357 }
 358
 359 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
 360                        void *load_buf, void *image_buf, ulong image_len,
 361                        uint unc_len, ulong *load_end)
 362 {
 363         int ret = 0;
 364
 365         *load_end = load;
 366         print_decomp_msg(comp, type, load == image_start);
 367
 368         /*
 369          * Load the image to the right place, decompressing if needed. After
 370          * this, image_len will be set to the number of uncompressed bytes
 371          * loaded, ret will be non-zero on error.
 372          */
 373         switch (comp) {
 374         case IH_COMP_NONE:
 375                 if (load == image_start)
 376                         break;
 377                 if (image_len <= unc_len)
 378                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 379                 else
 380                         ret = 1;
 381                 break;
 382 #ifdef CONFIG_GZIP
 383         case IH_COMP_GZIP: {
 384                 ret = gunzip(load_buf, unc_len, image_buf, &image_len);
 385                 break;
 386         }
 387 #endif /* CONFIG_GZIP */
 388 #ifdef CONFIG_BZIP2
 389         case IH_COMP_BZIP2: {
 390                 uint size = unc_len;
 391
 392                 /*
 393                  * If we've got less than 4 MB of malloc() space,
 394                  * use slower decompression algorithm which requires
 395                  * at most 2300 KB of memory.
 396                  */
 397                 ret = BZ2_bzBuffToBuffDecompress(load_buf, &size,
 398                         image_buf, image_len,
 399                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 400                 image_len = size;
 401                 break;
 402         }
 403 #endif /* CONFIG_BZIP2 */
 404 #ifdef CONFIG_LZMA
 405         case IH_COMP_LZMA: {
 406                 SizeT lzma_len = unc_len;
 407
 408                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 409                                                image_buf, image_len);
 410                 image_len = lzma_len;
 411                 break;
 412         }
 413 #endif /* CONFIG_LZMA */
 414 #ifdef CONFIG_LZO
 415         case IH_COMP_LZO: {
 416                 size_t size = unc_len;
 417
 418                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 419                 image_len = size;
 420                 break;
 421         }
 422 #endif /* CONFIG_LZO */
 423 #ifdef CONFIG_LZ4
 424         case IH_COMP_LZ4: {
 425                 size_t size = unc_len;
 426
 427                 ret = ulz4fn(image_buf, image_len, load_buf, &size);
 428                 image_len = size;
 429                 break;
 430         }
 431 #endif /* CONFIG_LZ4 */
 432         default:
 433                 printf("Unimplemented compression type %d\n", comp);
 434                 return BOOTM_ERR_UNIMPLEMENTED;
 435         }
 436
 437         if (ret)
 438                 return handle_decomp_error(comp, image_len, unc_len, ret);
 439         *load_end = load + image_len;
 440
 441         puts("OK\n");
 442
 443         return 0;
 444 }
 445
 446 #ifndef USE_HOSTCC
 447 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
 448 {
 449         image_info_t os = images->os;
 450         ulong load = os.load;
 451         ulong load_end;
 452         ulong blob_start = os.start;
 453         ulong blob_end = os.end;
 454         ulong image_start = os.image_start;
 455         ulong image_len = os.image_len;
 456         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 457         ulong flush_len;
 458         bool no_overlap;
 459         void *load_buf, *image_buf;
 460         int err;
 461
 462         load_buf = map_sysmem(load, 0);
 463         image_buf = map_sysmem(os.image_start, image_len);
 464         err = bootm_decomp_image(os.comp, load, os.image_start, os.type,
 465                                  load_buf, image_buf, image_len,
 466                                  CONFIG_SYS_BOOTM_LEN, &load_end);
 467         if (err) {
 468                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 469                 return err;
 470         }
 471
 472         flush_len = load_end - load;
 473         if (flush_start < load)
 474                 flush_len += load - flush_start;
 475
 476         flush_cache(flush_start, ALIGN(flush_len, ARCH_DMA_MINALIGN));
 477
 478         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 479         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 480
 481         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 482
 483         if (!no_overlap && load < blob_end && load_end > blob_start) {
 484                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 485                       blob_start, blob_end);
 486                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 487                       load_end);
 488
 489                 /* Check what type of image this is. */
 490                 if (images->legacy_hdr_valid) {
 491                         if (image_get_type(&images->legacy_hdr_os_copy)
 492                                         == IH_TYPE_MULTI)
 493                                 puts("WARNING: legacy format multi component image overwritten\n");
 494                         return BOOTM_ERR_OVERLAP;
 495                 } else {
 496                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 497                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 498                         return BOOTM_ERR_RESET;
 499                 }
 500         }
 501
 502         lmb_reserve(&images->lmb, images->os.load, (load_end -
 503                                                     images->os.load));
 504         return 0;
 505 }
 506
 507 /**
 508  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 509  *
 510  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 511  *      enabled)
 512  */
 513 ulong bootm_disable_interrupts(void)
 514 {
 515         ulong iflag;
 516
 517         /*
 518          * We have reached the point of no return: we are going to
 519          * overwrite all exception vector code, so we cannot easily
 520          * recover from any failures any more...
 521          */
 522         iflag = disable_interrupts();
 523 #ifdef CONFIG_NETCONSOLE
 524         /* Stop the ethernet stack if NetConsole could have left it up */
 525         eth_halt();
 526 # ifndef CONFIG_DM_ETH
 527         eth_unregister(eth_get_dev());
 528 # endif
 529 #endif
 530
 531 #if defined(CONFIG_CMD_USB)
 532         /*
 533          * turn off USB to prevent the host controller from writing to the
 534          * SDRAM while Linux is booting. This could happen (at least for OHCI
 535          * controller), because the HCCA (Host Controller Communication Area)
 536          * lies within the SDRAM and the host controller writes continously to
 537          * this area (as busmaster!). The HccaFrameNumber is for example
 538          * updated every 1 ms within the HCCA structure in SDRAM! For more
 539          * details see the OpenHCI specification.
 540          */
 541         usb_stop();
 542 #endif
 543         return iflag;
 544 }
 545
 546 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 547
 548 #define CONSOLE_ARG     "console="
 549 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 550
 551 static void fixup_silent_linux(void)
 552 {
 553         char *buf;
 554         const char *env_val;
 555         char *cmdline = env_get("bootargs");
 556         int want_silent;
 557
 558         /*
 559          * Only fix cmdline when requested. The environment variable can be:
 560          *
 561          *      no - we never fixup
 562          *      yes - we always fixup
 563          *      unset - we rely on the console silent flag
 564          */
 565         want_silent = env_get_yesno("silent_linux");
 566         if (want_silent == 0)
 567                 return;
 568         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 569                 return;
 570
 571         debug("before silent fix-up: %s\n", cmdline);
 572         if (cmdline && (cmdline[0] != '\0')) {
 573                 char *start = strstr(cmdline, CONSOLE_ARG);
 574
 575                 /* Allocate space for maximum possible new command line */
 576                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 577                 if (!buf) {
 578                         debug("%s: out of memory\n", __func__);
 579                         return;
 580                 }
 581
 582                 if (start) {
 583                         char *end = strchr(start, ' ');
 584                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 585
 586                         strncpy(buf, cmdline, num_start_bytes);
 587                         if (end)
 588                                 strcpy(buf + num_start_bytes, end);
 589                         else
 590                                 buf[num_start_bytes] = '\0';
 591                 } else {
 592                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 593                 }
 594                 env_val = buf;
 595         } else {
 596                 buf = NULL;
 597                 env_val = CONSOLE_ARG;
 598         }
 599
 600         env_set("bootargs", env_val);
 601         debug("after silent fix-up: %s\n", env_val);
 602         free(buf);
 603 }
 604 #endif /* CONFIG_SILENT_CONSOLE */
 605
 606 /**
 607  * Execute selected states of the bootm command.
 608  *
 609  * Note the arguments to this state must be the first argument, Any 'bootm'
 610  * or sub-command arguments must have already been taken.
 611  *
 612  * Note that if states contains more than one flag it MUST contain
 613  * BOOTM_STATE_START, since this handles and consumes the command line args.
 614  *
 615  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 616  * functions we store the return value of in 'ret' may use a negative return
 617  * value, without special handling.
 618  *
 619  * @param cmdtp         Pointer to bootm command table entry
 620  * @param flag          Command flags (CMD_FLAG_...)
 621  * @param argc          Number of subcommand arguments (0 = no arguments)
 622  * @param argv          Arguments
 623  * @param states        Mask containing states to run (BOOTM_STATE_...)
 624  * @param images        Image header information
 625  * @param boot_progress 1 to show boot progress, 0 to not do this
 626  * @return 0 if ok, something else on error. Some errors will cause this
 627  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 628  *      then the intent is to boot an OS, so this function will not return
 629  *      unless the image type is standalone.
 630  */
 631 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 632                     int states, bootm_headers_t *images, int boot_progress)
 633 {
 634         boot_os_fn *boot_fn;
 635         ulong iflag = 0;
 636         int ret = 0, need_boot_fn;
 637
 638         images->state |= states;
 639
 640         /*
 641          * Work through the states and see how far we get. We stop on
 642          * any error.
 643          */
 644         if (states & BOOTM_STATE_START)
 645                 ret = bootm_start(cmdtp, flag, argc, argv);
 646
 647         if (!ret && (states & BOOTM_STATE_FINDOS))
 648                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 649
 650         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 651                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 652
 653         /* Load the OS */
 654         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 655                 iflag = bootm_disable_interrupts();
 656                 ret = bootm_load_os(images, 0);
 657                 if (ret && ret != BOOTM_ERR_OVERLAP)
 658                         goto err;
 659                 else if (ret == BOOTM_ERR_OVERLAP)
 660                         ret = 0;
 661         }
 662
 663         /* Relocate the ramdisk */
 664 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 665         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 666                 ulong rd_len = images->rd_end - images->rd_start;
 667
 668                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 669                         rd_len, &images->initrd_start, &images->initrd_end);
 670                 if (!ret) {
 671                         env_set_hex("initrd_start", images->initrd_start);
 672                         env_set_hex("initrd_end", images->initrd_end);
 673                 }
 674         }
 675 #endif
 676 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
 677         if (!ret && (states & BOOTM_STATE_FDT)) {
 678                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 679                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 680                                         &images->ft_len);
 681         }
 682 #endif
 683
 684         /* From now on, we need the OS boot function */
 685         if (ret)
 686                 return ret;
 687         boot_fn = bootm_os_get_boot_func(images->os.os);
 688         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 689                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 690                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 691         if (boot_fn == NULL && need_boot_fn) {
 692                 if (iflag)
 693                         enable_interrupts();
 694                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 695                        genimg_get_os_name(images->os.os), images->os.os);
 696                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 697                 return 1;
 698         }
 699
 700
 701         /* Call various other states that are not generally used */
 702         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 703                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 704         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 705                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 706         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 707 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 708                 if (images->os.os == IH_OS_LINUX)
 709                         fixup_silent_linux();
 710 #endif
 711                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 712         }
 713
 714 #ifdef CONFIG_TRACE
 715         /* Pretend to run the OS, then run a user command */
 716         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 717                 char *cmd_list = env_get("fakegocmd");
 718
 719                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 720                                 images, boot_fn);
 721                 if (!ret && cmd_list)
 722                         ret = run_command_list(cmd_list, -1, flag);
 723         }
 724 #endif
 725
 726         /* Check for unsupported subcommand. */
 727         if (ret) {
 728                 puts("subcommand not supported\n");
 729                 return ret;
 730         }
 731
 732         /* Now run the OS! We hope this doesn't return */
 733         if (!ret && (states & BOOTM_STATE_OS_GO))
 734                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 735                                 images, boot_fn);
 736
 737         /* Deal with any fallout */
 738 err:
 739         if (iflag)
 740                 enable_interrupts();
 741
 742         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 743                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 744         else if (ret == BOOTM_ERR_RESET)
 745                 do_reset(cmdtp, flag, argc, argv);
 746
 747         return ret;
 748 }
 749
 750 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 751 /**
 752  * image_get_kernel - verify legacy format kernel image
 753  * @img_addr: in RAM address of the legacy format image to be verified
 754  * @verify: data CRC verification flag
 755  *
 756  * image_get_kernel() verifies legacy image integrity and returns pointer to
 757  * legacy image header if image verification was completed successfully.
 758  *
 759  * returns:
 760  *     pointer to a legacy image header if valid image was found
 761  *     otherwise return NULL
 762  */
 763 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 764 {
 765         image_header_t *hdr = (image_header_t *)img_addr;
 766
 767         if (!image_check_magic(hdr)) {
 768                 puts("Bad Magic Number\n");
 769                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 770                 return NULL;
 771         }
 772         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 773
 774         if (!image_check_hcrc(hdr)) {
 775                 puts("Bad Header Checksum\n");
 776                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 777                 return NULL;
 778         }
 779
 780         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 781         image_print_contents(hdr);
 782
 783         if (verify) {
 784                 puts("   Verifying Checksum ... ");
 785                 if (!image_check_dcrc(hdr)) {
 786                         printf("Bad Data CRC\n");
 787                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 788                         return NULL;
 789                 }
 790                 puts("OK\n");
 791         }
 792         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 793
 794         if (!image_check_target_arch(hdr)) {
 795                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 796                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 797                 return NULL;
 798         }
 799         return hdr;
 800 }
 801 #endif
 802
 803 /**
 804  * boot_get_kernel - find kernel image
 805  * @os_data: pointer to a ulong variable, will hold os data start address
 806  * @os_len: pointer to a ulong variable, will hold os data length
 807  *
 808  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 809  * and locates kernel data.
 810  *
 811  * returns:
 812  *     pointer to image header if valid image was found, plus kernel start
 813  *     address and length, otherwise NULL
 814  */
 815 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 816                                    char * const argv[], bootm_headers_t *images,
 817                                    ulong *os_data, ulong *os_len)
 818 {
 819 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 820         image_header_t  *hdr;
 821 #endif
 822         ulong           img_addr;
 823         const void *buf;
 824         const char      *fit_uname_config = NULL;
 825         const char      *fit_uname_kernel = NULL;
 826 #if IMAGE_ENABLE_FIT
 827         int             os_noffset;
 828 #endif
 829
 830         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 831                                               &fit_uname_config,
 832                                               &fit_uname_kernel);
 833
 834         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 835
 836         /* check image type, for FIT images get FIT kernel node */
 837         *os_data = *os_len = 0;
 838         buf = map_sysmem(img_addr, 0);
 839         switch (genimg_get_format(buf)) {
 840 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 841         case IMAGE_FORMAT_LEGACY:
 842                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 843                        img_addr);
 844                 hdr = image_get_kernel(img_addr, images->verify);
 845                 if (!hdr)
 846                         return NULL;
 847                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 848
 849                 /* get os_data and os_len */
 850                 switch (image_get_type(hdr)) {
 851                 case IH_TYPE_KERNEL:
 852                 case IH_TYPE_KERNEL_NOLOAD:
 853                         *os_data = image_get_data(hdr);
 854                         *os_len = image_get_data_size(hdr);
 855                         break;
 856                 case IH_TYPE_MULTI:
 857                         image_multi_getimg(hdr, 0, os_data, os_len);
 858                         break;
 859                 case IH_TYPE_STANDALONE:
 860                         *os_data = image_get_data(hdr);
 861                         *os_len = image_get_data_size(hdr);
 862                         break;
 863                 default:
 864                         printf("Wrong Image Type for %s command\n",
 865                                cmdtp->name);
 866                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 867                         return NULL;
 868                 }
 869
 870                 /*
 871                  * copy image header to allow for image overwrites during
 872                  * kernel decompression.
 873                  */
 874                 memmove(&images->legacy_hdr_os_copy, hdr,
 875                         sizeof(image_header_t));
 876
 877                 /* save pointer to image header */
 878                 images->legacy_hdr_os = hdr;
 879
 880                 images->legacy_hdr_valid = 1;
 881                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 882                 break;
 883 #endif
 884 #if IMAGE_ENABLE_FIT
 885         case IMAGE_FORMAT_FIT:
 886                 os_noffset = fit_image_load(images, img_addr,
 887                                 &fit_uname_kernel, &fit_uname_config,
 888                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 889                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 890                                 FIT_LOAD_IGNORED, os_data, os_len);
 891                 if (os_noffset < 0)
 892                         return NULL;
 893
 894                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 895                 images->fit_uname_os = fit_uname_kernel;
 896                 images->fit_uname_cfg = fit_uname_config;
 897                 images->fit_noffset_os = os_noffset;
 898                 break;
 899 #endif
 900 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 901         case IMAGE_FORMAT_ANDROID:
 902                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 903                 if (android_image_get_kernel(buf, images->verify,
 904                                              os_data, os_len))
 905                         return NULL;
 906                 break;
 907 #endif
 908         default:
 909                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 910                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 911                 return NULL;
 912         }
 913
 914         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 915               *os_data, *os_len, *os_len);
 916
 917         return buf;
 918 }
 919 #else /* USE_HOSTCC */
 920
 921 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
 922 {
 923         memmove(to, from, len);
 924 }
 925
 926 static int bootm_host_load_image(const void *fit, int req_image_type)
 927 {
 928         const char *fit_uname_config = NULL;
 929         ulong data, len;
 930         bootm_headers_t images;
 931         int noffset;
 932         ulong load_end;
 933         uint8_t image_type;
 934         uint8_t imape_comp;
 935         void *load_buf;
 936         int ret;
 937
 938         memset(&images, '\0', sizeof(images));
 939         images.verify = 1;
 940         noffset = fit_image_load(&images, (ulong)fit,
 941                 NULL, &fit_uname_config,
 942                 IH_ARCH_DEFAULT, req_image_type, -1,
 943                 FIT_LOAD_IGNORED, &data, &len);
 944         if (noffset < 0)
 945                 return noffset;
 946         if (fit_image_get_type(fit, noffset, &image_type)) {
 947                 puts("Can't get image type!\n");
 948                 return -EINVAL;
 949         }
 950
 951         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 952                 puts("Can't get image compression!\n");
 953                 return -EINVAL;
 954         }
 955
 956         /* Allow the image to expand by a factor of 4, should be safe */
 957         load_buf = malloc((1 << 20) + len * 4);
 958         ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf,
 959                                  (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 960                                  &load_end);
 961         free(load_buf);
 962
 963         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
 964                 return ret;
 965
 966         return 0;
 967 }
 968
 969 int bootm_host_load_images(const void *fit, int cfg_noffset)
 970 {
 971         static uint8_t image_types[] = {
 972                 IH_TYPE_KERNEL,
 973                 IH_TYPE_FLATDT,
 974                 IH_TYPE_RAMDISK,
 975         };
 976         int err = 0;
 977         int i;
 978
 979         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 980                 int ret;
 981
 982                 ret = bootm_host_load_image(fit, image_types[i]);
 983                 if (!err && ret && ret != -ENOENT)
 984                         err = ret;
 985         }
 986
 987         /* Return the first error we found */
 988         return err;
 989 }
 990
 991 #endif /* ndef USE_HOSTCC */