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