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