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         mem_start = env_get_bootm_low();
  60         mem_size = env_get_bootm_size();
  61
  62         lmb_init_and_reserve(&images->lmb, (phys_addr_t)mem_start, mem_size,
  63                              NULL);
  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                 if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
 202                     images.os.arch == IH_ARCH_ARM64) {
 203                         ulong image_addr;
 204                         ulong image_size;
 205
 206                         ret = booti_setup(images.os.image_start, &image_addr,
 207                                           &image_size, true);
 208                         if (ret != 0)
 209                                 return 1;
 210
 211                         images.os.type = IH_TYPE_KERNEL;
 212                         images.os.load = image_addr;
 213                         images.ep = image_addr;
 214                 } else {
 215                         images.os.load = images.os.image_start;
 216                         images.ep += images.os.image_start;
 217                 }
 218         }
 219
 220         images.os.start = map_to_sysmem(os_hdr);
 221
 222         return 0;
 223 }
 224
 225 /**
 226  * bootm_find_images - wrapper to find and locate various images
 227  * @flag: Ignored Argument
 228  * @argc: command argument count
 229  * @argv: command argument list
 230  *
 231  * boot_find_images() will attempt to load an available ramdisk,
 232  * flattened device tree, as well as specifically marked
 233  * "loadable" images (loadables are FIT only)
 234  *
 235  * Note: bootm_find_images will skip an image if it is not found
 236  *
 237  * @return:
 238  *     0, if all existing images were loaded correctly
 239  *     1, if an image is found but corrupted, or invalid
 240  */
 241 int bootm_find_images(int flag, int argc, char * const argv[])
 242 {
 243         int ret;
 244
 245         /* find ramdisk */
 246         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 247                                &images.rd_start, &images.rd_end);
 248         if (ret) {
 249                 puts("Ramdisk image is corrupt or invalid\n");
 250                 return 1;
 251         }
 252
 253 #if IMAGE_ENABLE_OF_LIBFDT
 254         /* find flattened device tree */
 255         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 256                            &images.ft_addr, &images.ft_len);
 257         if (ret) {
 258                 puts("Could not find a valid device tree\n");
 259                 return 1;
 260         }
 261         if (CONFIG_IS_ENABLED(CMD_FDT))
 262                 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
 263 #endif
 264
 265 #if IMAGE_ENABLE_FIT
 266 #if defined(CONFIG_FPGA)
 267         /* find bitstreams */
 268         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 269                             NULL, NULL);
 270         if (ret) {
 271                 printf("FPGA image is corrupted or invalid\n");
 272                 return 1;
 273         }
 274 #endif
 275
 276         /* find all of the loadables */
 277         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 278                                NULL, NULL);
 279         if (ret) {
 280                 printf("Loadable(s) is corrupt or invalid\n");
 281                 return 1;
 282         }
 283 #endif
 284
 285         return 0;
 286 }
 287
 288 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 289                             char * const argv[])
 290 {
 291         if (((images.os.type == IH_TYPE_KERNEL) ||
 292              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 293              (images.os.type == IH_TYPE_MULTI)) &&
 294             (images.os.os == IH_OS_LINUX ||
 295                  images.os.os == IH_OS_VXWORKS))
 296                 return bootm_find_images(flag, argc, argv);
 297
 298         return 0;
 299 }
 300 #endif /* USE_HOSTC */
 301
 302 /**
 303  * print_decomp_msg() - Print a suitable decompression/loading message
 304  *
 305  * @type:       OS type (IH_OS_...)
 306  * @comp_type:  Compression type being used (IH_COMP_...)
 307  * @is_xip:     true if the load address matches the image start
 308  */
 309 static void print_decomp_msg(int comp_type, int type, bool is_xip)
 310 {
 311         const char *name = genimg_get_type_name(type);
 312
 313         if (comp_type == IH_COMP_NONE)
 314                 printf("   %s %s ... ", is_xip ? "XIP" : "Loading", name);
 315         else
 316                 printf("   Uncompressing %s ... ", name);
 317 }
 318
 319 /**
 320  * handle_decomp_error() - display a decompression error
 321  *
 322  * This function tries to produce a useful message. In the case where the
 323  * uncompressed size is the same as the available space, we can assume that
 324  * the image is too large for the buffer.
 325  *
 326  * @comp_type:          Compression type being used (IH_COMP_...)
 327  * @uncomp_size:        Number of bytes uncompressed
 328  * @unc_len:            Amount of space available for decompression
 329  * @ret:                Error code to report
 330  * @return BOOTM_ERR_RESET, indicating that the board must be reset
 331  */
 332 static int handle_decomp_error(int comp_type, size_t uncomp_size,
 333                                size_t unc_len, int ret)
 334 {
 335         const char *name = genimg_get_comp_name(comp_type);
 336
 337         if (uncomp_size >= unc_len)
 338                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 339         else
 340                 printf("%s: uncompress error %d\n", name, ret);
 341
 342         /*
 343          * The decompression routines are now safe, so will not write beyond
 344          * their bounds. Probably it is not necessary to reset, but maintain
 345          * the current behaviour for now.
 346          */
 347         printf("Must RESET board to recover\n");
 348 #ifndef USE_HOSTCC
 349         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 350 #endif
 351
 352         return BOOTM_ERR_RESET;
 353 }
 354
 355 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
 356                        void *load_buf, void *image_buf, ulong image_len,
 357                        uint unc_len, ulong *load_end)
 358 {
 359         int ret = 0;
 360
 361         *load_end = load;
 362         print_decomp_msg(comp, type, load == image_start);
 363
 364         /*
 365          * Load the image to the right place, decompressing if needed. After
 366          * this, image_len will be set to the number of uncompressed bytes
 367          * loaded, ret will be non-zero on error.
 368          */
 369         switch (comp) {
 370         case IH_COMP_NONE:
 371                 if (load == image_start)
 372                         break;
 373                 if (image_len <= unc_len)
 374                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 375                 else
 376                         ret = 1;
 377                 break;
 378 #ifdef CONFIG_GZIP
 379         case IH_COMP_GZIP: {
 380                 ret = gunzip(load_buf, unc_len, image_buf, &image_len);
 381                 break;
 382         }
 383 #endif /* CONFIG_GZIP */
 384 #ifdef CONFIG_BZIP2
 385         case IH_COMP_BZIP2: {
 386                 uint size = unc_len;
 387
 388                 /*
 389                  * If we've got less than 4 MB of malloc() space,
 390                  * use slower decompression algorithm which requires
 391                  * at most 2300 KB of memory.
 392                  */
 393                 ret = BZ2_bzBuffToBuffDecompress(load_buf, &size,
 394                         image_buf, image_len,
 395                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 396                 image_len = size;
 397                 break;
 398         }
 399 #endif /* CONFIG_BZIP2 */
 400 #ifdef CONFIG_LZMA
 401         case IH_COMP_LZMA: {
 402                 SizeT lzma_len = unc_len;
 403
 404                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 405                                                image_buf, image_len);
 406                 image_len = lzma_len;
 407                 break;
 408         }
 409 #endif /* CONFIG_LZMA */
 410 #ifdef CONFIG_LZO
 411         case IH_COMP_LZO: {
 412                 size_t size = unc_len;
 413
 414                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 415                 image_len = size;
 416                 break;
 417         }
 418 #endif /* CONFIG_LZO */
 419 #ifdef CONFIG_LZ4
 420         case IH_COMP_LZ4: {
 421                 size_t size = unc_len;
 422
 423                 ret = ulz4fn(image_buf, image_len, load_buf, &size);
 424                 image_len = size;
 425                 break;
 426         }
 427 #endif /* CONFIG_LZ4 */
 428         default:
 429                 printf("Unimplemented compression type %d\n", comp);
 430                 return BOOTM_ERR_UNIMPLEMENTED;
 431         }
 432
 433         if (ret)
 434                 return handle_decomp_error(comp, image_len, unc_len, ret);
 435         *load_end = load + image_len;
 436
 437         puts("OK\n");
 438
 439         return 0;
 440 }
 441
 442 #ifndef USE_HOSTCC
 443 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
 444 {
 445         image_info_t os = images->os;
 446         ulong load = os.load;
 447         ulong load_end;
 448         ulong blob_start = os.start;
 449         ulong blob_end = os.end;
 450         ulong image_start = os.image_start;
 451         ulong image_len = os.image_len;
 452         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 453         ulong flush_len;
 454         bool no_overlap;
 455         void *load_buf, *image_buf;
 456         int err;
 457
 458         load_buf = map_sysmem(load, 0);
 459         image_buf = map_sysmem(os.image_start, image_len);
 460         err = bootm_decomp_image(os.comp, load, os.image_start, os.type,
 461                                  load_buf, image_buf, image_len,
 462                                  CONFIG_SYS_BOOTM_LEN, &load_end);
 463         if (err) {
 464                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 465                 return err;
 466         }
 467
 468         flush_len = load_end - load;
 469         if (flush_start < load)
 470                 flush_len += load - flush_start;
 471
 472         flush_cache(flush_start, ALIGN(flush_len, ARCH_DMA_MINALIGN));
 473
 474         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 475         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 476
 477         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 478
 479         if (!no_overlap && load < blob_end && load_end > blob_start) {
 480                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 481                       blob_start, blob_end);
 482                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 483                       load_end);
 484
 485                 /* Check what type of image this is. */
 486                 if (images->legacy_hdr_valid) {
 487                         if (image_get_type(&images->legacy_hdr_os_copy)
 488                                         == IH_TYPE_MULTI)
 489                                 puts("WARNING: legacy format multi component image overwritten\n");
 490                         return BOOTM_ERR_OVERLAP;
 491                 } else {
 492                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 493                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 494                         return BOOTM_ERR_RESET;
 495                 }
 496         }
 497
 498         lmb_reserve(&images->lmb, images->os.load, (load_end -
 499                                                     images->os.load));
 500         return 0;
 501 }
 502
 503 /**
 504  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 505  *
 506  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 507  *      enabled)
 508  */
 509 ulong bootm_disable_interrupts(void)
 510 {
 511         ulong iflag;
 512
 513         /*
 514          * We have reached the point of no return: we are going to
 515          * overwrite all exception vector code, so we cannot easily
 516          * recover from any failures any more...
 517          */
 518         iflag = disable_interrupts();
 519 #ifdef CONFIG_NETCONSOLE
 520         /* Stop the ethernet stack if NetConsole could have left it up */
 521         eth_halt();
 522 # ifndef CONFIG_DM_ETH
 523         eth_unregister(eth_get_dev());
 524 # endif
 525 #endif
 526
 527 #if defined(CONFIG_CMD_USB)
 528         /*
 529          * turn off USB to prevent the host controller from writing to the
 530          * SDRAM while Linux is booting. This could happen (at least for OHCI
 531          * controller), because the HCCA (Host Controller Communication Area)
 532          * lies within the SDRAM and the host controller writes continously to
 533          * this area (as busmaster!). The HccaFrameNumber is for example
 534          * updated every 1 ms within the HCCA structure in SDRAM! For more
 535          * details see the OpenHCI specification.
 536          */
 537         usb_stop();
 538 #endif
 539         return iflag;
 540 }
 541
 542 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 543
 544 #define CONSOLE_ARG     "console="
 545 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 546
 547 static void fixup_silent_linux(void)
 548 {
 549         char *buf;
 550         const char *env_val;
 551         char *cmdline = env_get("bootargs");
 552         int want_silent;
 553
 554         /*
 555          * Only fix cmdline when requested. The environment variable can be:
 556          *
 557          *      no - we never fixup
 558          *      yes - we always fixup
 559          *      unset - we rely on the console silent flag
 560          */
 561         want_silent = env_get_yesno("silent_linux");
 562         if (want_silent == 0)
 563                 return;
 564         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 565                 return;
 566
 567         debug("before silent fix-up: %s\n", cmdline);
 568         if (cmdline && (cmdline[0] != '\0')) {
 569                 char *start = strstr(cmdline, CONSOLE_ARG);
 570
 571                 /* Allocate space for maximum possible new command line */
 572                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 573                 if (!buf) {
 574                         debug("%s: out of memory\n", __func__);
 575                         return;
 576                 }
 577
 578                 if (start) {
 579                         char *end = strchr(start, ' ');
 580                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 581
 582                         strncpy(buf, cmdline, num_start_bytes);
 583                         if (end)
 584                                 strcpy(buf + num_start_bytes, end);
 585                         else
 586                                 buf[num_start_bytes] = '\0';
 587                 } else {
 588                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 589                 }
 590                 env_val = buf;
 591         } else {
 592                 buf = NULL;
 593                 env_val = CONSOLE_ARG;
 594         }
 595
 596         env_set("bootargs", env_val);
 597         debug("after silent fix-up: %s\n", env_val);
 598         free(buf);
 599 }
 600 #endif /* CONFIG_SILENT_CONSOLE */
 601
 602 /**
 603  * Execute selected states of the bootm command.
 604  *
 605  * Note the arguments to this state must be the first argument, Any 'bootm'
 606  * or sub-command arguments must have already been taken.
 607  *
 608  * Note that if states contains more than one flag it MUST contain
 609  * BOOTM_STATE_START, since this handles and consumes the command line args.
 610  *
 611  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 612  * functions we store the return value of in 'ret' may use a negative return
 613  * value, without special handling.
 614  *
 615  * @param cmdtp         Pointer to bootm command table entry
 616  * @param flag          Command flags (CMD_FLAG_...)
 617  * @param argc          Number of subcommand arguments (0 = no arguments)
 618  * @param argv          Arguments
 619  * @param states        Mask containing states to run (BOOTM_STATE_...)
 620  * @param images        Image header information
 621  * @param boot_progress 1 to show boot progress, 0 to not do this
 622  * @return 0 if ok, something else on error. Some errors will cause this
 623  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 624  *      then the intent is to boot an OS, so this function will not return
 625  *      unless the image type is standalone.
 626  */
 627 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 628                     int states, bootm_headers_t *images, int boot_progress)
 629 {
 630         boot_os_fn *boot_fn;
 631         ulong iflag = 0;
 632         int ret = 0, need_boot_fn;
 633
 634         images->state |= states;
 635
 636         /*
 637          * Work through the states and see how far we get. We stop on
 638          * any error.
 639          */
 640         if (states & BOOTM_STATE_START)
 641                 ret = bootm_start(cmdtp, flag, argc, argv);
 642
 643         if (!ret && (states & BOOTM_STATE_FINDOS))
 644                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 645
 646         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 647                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 648
 649         /* Load the OS */
 650         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 651                 iflag = bootm_disable_interrupts();
 652                 ret = bootm_load_os(images, 0);
 653                 if (ret && ret != BOOTM_ERR_OVERLAP)
 654                         goto err;
 655                 else if (ret == BOOTM_ERR_OVERLAP)
 656                         ret = 0;
 657         }
 658
 659         /* Relocate the ramdisk */
 660 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 661         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 662                 ulong rd_len = images->rd_end - images->rd_start;
 663
 664                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 665                         rd_len, &images->initrd_start, &images->initrd_end);
 666                 if (!ret) {
 667                         env_set_hex("initrd_start", images->initrd_start);
 668                         env_set_hex("initrd_end", images->initrd_end);
 669                 }
 670         }
 671 #endif
 672 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
 673         if (!ret && (states & BOOTM_STATE_FDT)) {
 674                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 675                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 676                                         &images->ft_len);
 677         }
 678 #endif
 679
 680         /* From now on, we need the OS boot function */
 681         if (ret)
 682                 return ret;
 683         boot_fn = bootm_os_get_boot_func(images->os.os);
 684         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 685                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 686                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 687         if (boot_fn == NULL && need_boot_fn) {
 688                 if (iflag)
 689                         enable_interrupts();
 690                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 691                        genimg_get_os_name(images->os.os), images->os.os);
 692                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 693                 return 1;
 694         }
 695
 696
 697         /* Call various other states that are not generally used */
 698         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 699                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 700         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 701                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 702         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 703 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 704                 if (images->os.os == IH_OS_LINUX)
 705                         fixup_silent_linux();
 706 #endif
 707                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 708         }
 709
 710 #ifdef CONFIG_TRACE
 711         /* Pretend to run the OS, then run a user command */
 712         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 713                 char *cmd_list = env_get("fakegocmd");
 714
 715                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 716                                 images, boot_fn);
 717                 if (!ret && cmd_list)
 718                         ret = run_command_list(cmd_list, -1, flag);
 719         }
 720 #endif
 721
 722         /* Check for unsupported subcommand. */
 723         if (ret) {
 724                 puts("subcommand not supported\n");
 725                 return ret;
 726         }
 727
 728         /* Now run the OS! We hope this doesn't return */
 729         if (!ret && (states & BOOTM_STATE_OS_GO))
 730                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 731                                 images, boot_fn);
 732
 733         /* Deal with any fallout */
 734 err:
 735         if (iflag)
 736                 enable_interrupts();
 737
 738         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 739                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 740         else if (ret == BOOTM_ERR_RESET)
 741                 do_reset(cmdtp, flag, argc, argv);
 742
 743         return ret;
 744 }
 745
 746 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 747 /**
 748  * image_get_kernel - verify legacy format kernel image
 749  * @img_addr: in RAM address of the legacy format image to be verified
 750  * @verify: data CRC verification flag
 751  *
 752  * image_get_kernel() verifies legacy image integrity and returns pointer to
 753  * legacy image header if image verification was completed successfully.
 754  *
 755  * returns:
 756  *     pointer to a legacy image header if valid image was found
 757  *     otherwise return NULL
 758  */
 759 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 760 {
 761         image_header_t *hdr = (image_header_t *)img_addr;
 762
 763         if (!image_check_magic(hdr)) {
 764                 puts("Bad Magic Number\n");
 765                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 766                 return NULL;
 767         }
 768         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 769
 770         if (!image_check_hcrc(hdr)) {
 771                 puts("Bad Header Checksum\n");
 772                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 773                 return NULL;
 774         }
 775
 776         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 777         image_print_contents(hdr);
 778
 779         if (verify) {
 780                 puts("   Verifying Checksum ... ");
 781                 if (!image_check_dcrc(hdr)) {
 782                         printf("Bad Data CRC\n");
 783                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 784                         return NULL;
 785                 }
 786                 puts("OK\n");
 787         }
 788         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 789
 790         if (!image_check_target_arch(hdr)) {
 791                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 792                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 793                 return NULL;
 794         }
 795         return hdr;
 796 }
 797 #endif
 798
 799 /**
 800  * boot_get_kernel - find kernel image
 801  * @os_data: pointer to a ulong variable, will hold os data start address
 802  * @os_len: pointer to a ulong variable, will hold os data length
 803  *
 804  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 805  * and locates kernel data.
 806  *
 807  * returns:
 808  *     pointer to image header if valid image was found, plus kernel start
 809  *     address and length, otherwise NULL
 810  */
 811 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 812                                    char * const argv[], bootm_headers_t *images,
 813                                    ulong *os_data, ulong *os_len)
 814 {
 815 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 816         image_header_t  *hdr;
 817 #endif
 818         ulong           img_addr;
 819         const void *buf;
 820         const char      *fit_uname_config = NULL;
 821         const char      *fit_uname_kernel = NULL;
 822 #if IMAGE_ENABLE_FIT
 823         int             os_noffset;
 824 #endif
 825
 826         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 827                                               &fit_uname_config,
 828                                               &fit_uname_kernel);
 829
 830         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 831
 832         /* check image type, for FIT images get FIT kernel node */
 833         *os_data = *os_len = 0;
 834         buf = map_sysmem(img_addr, 0);
 835         switch (genimg_get_format(buf)) {
 836 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 837         case IMAGE_FORMAT_LEGACY:
 838                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 839                        img_addr);
 840                 hdr = image_get_kernel(img_addr, images->verify);
 841                 if (!hdr)
 842                         return NULL;
 843                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 844
 845                 /* get os_data and os_len */
 846                 switch (image_get_type(hdr)) {
 847                 case IH_TYPE_KERNEL:
 848                 case IH_TYPE_KERNEL_NOLOAD:
 849                         *os_data = image_get_data(hdr);
 850                         *os_len = image_get_data_size(hdr);
 851                         break;
 852                 case IH_TYPE_MULTI:
 853                         image_multi_getimg(hdr, 0, os_data, os_len);
 854                         break;
 855                 case IH_TYPE_STANDALONE:
 856                         *os_data = image_get_data(hdr);
 857                         *os_len = image_get_data_size(hdr);
 858                         break;
 859                 default:
 860                         printf("Wrong Image Type for %s command\n",
 861                                cmdtp->name);
 862                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 863                         return NULL;
 864                 }
 865
 866                 /*
 867                  * copy image header to allow for image overwrites during
 868                  * kernel decompression.
 869                  */
 870                 memmove(&images->legacy_hdr_os_copy, hdr,
 871                         sizeof(image_header_t));
 872
 873                 /* save pointer to image header */
 874                 images->legacy_hdr_os = hdr;
 875
 876                 images->legacy_hdr_valid = 1;
 877                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 878                 break;
 879 #endif
 880 #if IMAGE_ENABLE_FIT
 881         case IMAGE_FORMAT_FIT:
 882                 os_noffset = fit_image_load(images, img_addr,
 883                                 &fit_uname_kernel, &fit_uname_config,
 884                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 885                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 886                                 FIT_LOAD_IGNORED, os_data, os_len);
 887                 if (os_noffset < 0)
 888                         return NULL;
 889
 890                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 891                 images->fit_uname_os = fit_uname_kernel;
 892                 images->fit_uname_cfg = fit_uname_config;
 893                 images->fit_noffset_os = os_noffset;
 894                 break;
 895 #endif
 896 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 897         case IMAGE_FORMAT_ANDROID:
 898                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 899                 if (android_image_get_kernel(buf, images->verify,
 900                                              os_data, os_len))
 901                         return NULL;
 902                 break;
 903 #endif
 904         default:
 905                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 906                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 907                 return NULL;
 908         }
 909
 910         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 911               *os_data, *os_len, *os_len);
 912
 913         return buf;
 914 }
 915 #else /* USE_HOSTCC */
 916
 917 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
 918 {
 919         memmove(to, from, len);
 920 }
 921
 922 static int bootm_host_load_image(const void *fit, int req_image_type)
 923 {
 924         const char *fit_uname_config = NULL;
 925         ulong data, len;
 926         bootm_headers_t images;
 927         int noffset;
 928         ulong load_end;
 929         uint8_t image_type;
 930         uint8_t imape_comp;
 931         void *load_buf;
 932         int ret;
 933
 934         memset(&images, '\0', sizeof(images));
 935         images.verify = 1;
 936         noffset = fit_image_load(&images, (ulong)fit,
 937                 NULL, &fit_uname_config,
 938                 IH_ARCH_DEFAULT, req_image_type, -1,
 939                 FIT_LOAD_IGNORED, &data, &len);
 940         if (noffset < 0)
 941                 return noffset;
 942         if (fit_image_get_type(fit, noffset, &image_type)) {
 943                 puts("Can't get image type!\n");
 944                 return -EINVAL;
 945         }
 946
 947         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 948                 puts("Can't get image compression!\n");
 949                 return -EINVAL;
 950         }
 951
 952         /* Allow the image to expand by a factor of 4, should be safe */
 953         load_buf = malloc((1 << 20) + len * 4);
 954         ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf,
 955                                  (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 956                                  &load_end);
 957         free(load_buf);
 958
 959         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
 960                 return ret;
 961
 962         return 0;
 963 }
 964
 965 int bootm_host_load_images(const void *fit, int cfg_noffset)
 966 {
 967         static uint8_t image_types[] = {
 968                 IH_TYPE_KERNEL,
 969                 IH_TYPE_FLATDT,
 970                 IH_TYPE_RAMDISK,
 971         };
 972         int err = 0;
 973         int i;
 974
 975         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 976                 int ret;
 977
 978                 ret = bootm_host_load_image(fit, image_types[i]);
 979                 if (!err && ret && ret != -ENOENT)
 980                         err = ret;
 981         }
 982
 983         /* Return the first error we found */
 984         return err;
 985 }
 986
 987 #endif /* ndef USE_HOSTCC */