common/bootm.c

   1 /*
   2  * (C) Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef USE_HOSTCC
   9 #include <common.h>
  10 #include <bootstage.h>
  11 #include <bzlib.h>
  12 #include <fdt_support.h>
  13 #include <lmb.h>
  14 #include <malloc.h>
  15 #include <asm/io.h>
  16 #include <linux/lzo.h>
  17 #include <lzma/LzmaTypes.h>
  18 #include <lzma/LzmaDec.h>
  19 #include <lzma/LzmaTools.h>
  20 #if defined(CONFIG_CMD_USB)
  21 #include <usb.h>
  22 #endif
  23 #else
  24 #include "mkimage.h"
  25 #endif
  26
  27 #include <command.h>
  28 #include <bootm.h>
  29 #include <image.h>
  30
  31 #ifndef CONFIG_SYS_BOOTM_LEN
  32 /* use 8MByte as default max gunzip size */
  33 #define CONFIG_SYS_BOOTM_LEN    0x800000
  34 #endif
  35
  36 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  37
  38 #ifndef USE_HOSTCC
  39
  40 DECLARE_GLOBAL_DATA_PTR;
  41
  42 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  43                                    char * const argv[], bootm_headers_t *images,
  44                                    ulong *os_data, ulong *os_len);
  45
  46 #ifdef CONFIG_LMB
  47 static void boot_start_lmb(bootm_headers_t *images)
  48 {
  49         ulong           mem_start;
  50         phys_size_t     mem_size;
  51
  52         lmb_init(&images->lmb);
  53
  54         mem_start = getenv_bootm_low();
  55         mem_size = getenv_bootm_size();
  56
  57         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
  58
  59         arch_lmb_reserve(&images->lmb);
  60         board_lmb_reserve(&images->lmb);
  61 }
  62 #else
  63 #define lmb_reserve(lmb, base, size)
  64 static inline void boot_start_lmb(bootm_headers_t *images) { }
  65 #endif
  66
  67 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
  68                        char * const argv[])
  69 {
  70         memset((void *)&images, 0, sizeof(images));
  71         images.verify = getenv_yesno("verify");
  72
  73         boot_start_lmb(&images);
  74
  75         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  76         images.state = BOOTM_STATE_START;
  77
  78         return 0;
  79 }
  80
  81 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
  82                          char * const argv[])
  83 {
  84         const void *os_hdr;
  85         bool ep_found = false;
  86
  87         /* get kernel image header, start address and length */
  88         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  89                         &images, &images.os.image_start, &images.os.image_len);
  90         if (images.os.image_len == 0) {
  91                 puts("ERROR: can't get kernel image!\n");
  92                 return 1;
  93         }
  94
  95         /* get image parameters */
  96         switch (genimg_get_format(os_hdr)) {
  97 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
  98         case IMAGE_FORMAT_LEGACY:
  99                 images.os.type = image_get_type(os_hdr);
 100                 images.os.comp = image_get_comp(os_hdr);
 101                 images.os.os = image_get_os(os_hdr);
 102
 103                 images.os.end = image_get_image_end(os_hdr);
 104                 images.os.load = image_get_load(os_hdr);
 105                 break;
 106 #endif
 107 #if defined(CONFIG_FIT)
 108         case IMAGE_FORMAT_FIT:
 109                 if (fit_image_get_type(images.fit_hdr_os,
 110                                        images.fit_noffset_os,
 111                                        &images.os.type)) {
 112                         puts("Can't get image type!\n");
 113                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 114                         return 1;
 115                 }
 116
 117                 if (fit_image_get_comp(images.fit_hdr_os,
 118                                        images.fit_noffset_os,
 119                                        &images.os.comp)) {
 120                         puts("Can't get image compression!\n");
 121                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 122                         return 1;
 123                 }
 124
 125                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 126                                      &images.os.os)) {
 127                         puts("Can't get image OS!\n");
 128                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 129                         return 1;
 130                 }
 131
 132                 images.os.end = fit_get_end(images.fit_hdr_os);
 133
 134                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 135                                        &images.os.load)) {
 136                         puts("Can't get image load address!\n");
 137                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 138                         return 1;
 139                 }
 140                 break;
 141 #endif
 142 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 143         case IMAGE_FORMAT_ANDROID:
 144                 images.os.type = IH_TYPE_KERNEL;
 145                 images.os.comp = IH_COMP_NONE;
 146                 images.os.os = IH_OS_LINUX;
 147                 images.ep = images.os.load;
 148                 ep_found = true;
 149
 150                 images.os.end = android_image_get_end(os_hdr);
 151                 images.os.load = android_image_get_kload(os_hdr);
 152                 break;
 153 #endif
 154         default:
 155                 puts("ERROR: unknown image format type!\n");
 156                 return 1;
 157         }
 158
 159         /* find kernel entry point */
 160         if (images.legacy_hdr_valid) {
 161                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 162 #if defined(CONFIG_FIT)
 163         } else if (images.fit_uname_os) {
 164                 int ret;
 165
 166                 ret = fit_image_get_entry(images.fit_hdr_os,
 167                                           images.fit_noffset_os, &images.ep);
 168                 if (ret) {
 169                         puts("Can't get entry point property!\n");
 170                         return 1;
 171                 }
 172 #endif
 173         } else if (!ep_found) {
 174                 puts("Could not find kernel entry point!\n");
 175                 return 1;
 176         }
 177
 178         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 179                 images.os.load = images.os.image_start;
 180                 images.ep += images.os.load;
 181         }
 182
 183         images.os.start = (ulong)os_hdr;
 184
 185         return 0;
 186 }
 187
 188 static int bootm_find_ramdisk(int flag, int argc, char * const argv[])
 189 {
 190         int ret;
 191
 192         /* find ramdisk */
 193         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 194                                &images.rd_start, &images.rd_end);
 195         if (ret) {
 196                 puts("Ramdisk image is corrupt or invalid\n");
 197                 return 1;
 198         }
 199
 200         return 0;
 201 }
 202
 203 #if defined(CONFIG_OF_LIBFDT)
 204 static int bootm_find_fdt(int flag, int argc, char * const argv[])
 205 {
 206         int ret;
 207
 208         /* find flattened device tree */
 209         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 210                            &images.ft_addr, &images.ft_len);
 211         if (ret) {
 212                 puts("Could not find a valid device tree\n");
 213                 return 1;
 214         }
 215
 216         set_working_fdt_addr(images.ft_addr);
 217
 218         return 0;
 219 }
 220 #endif
 221
 222 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[])
 223 {
 224         if (bootm_find_ramdisk(flag, argc, argv))
 225                 return 1;
 226
 227 #if defined(CONFIG_OF_LIBFDT)
 228         if (bootm_find_fdt(flag, argc, argv))
 229                 return 1;
 230 #endif
 231
 232         return 0;
 233 }
 234
 235 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 236                             char * const argv[])
 237 {
 238         if (((images.os.type == IH_TYPE_KERNEL) ||
 239              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 240              (images.os.type == IH_TYPE_MULTI)) &&
 241             (images.os.os == IH_OS_LINUX ||
 242                  images.os.os == IH_OS_VXWORKS))
 243                 return bootm_find_ramdisk_fdt(flag, argc, argv);
 244
 245         return 0;
 246 }
 247 #endif /* USE_HOSTCC */
 248
 249 /**
 250  * decomp_image() - decompress the operating system
 251  *
 252  * @comp:       Compression algorithm that is used (IH_COMP_...)
 253  * @load:       Destination load address in U-Boot memory
 254  * @image_start Image start address (where we are decompressing from)
 255  * @type:       OS type (IH_OS_...)
 256  * @load_bug:   Place to decompress to
 257  * @image_buf:  Address to decompress from
 258  * @return 0 if OK, -ve on error (BOOTM_ERR_...)
 259  */
 260 static int decomp_image(int comp, ulong load, ulong image_start, int type,
 261                         void *load_buf, void *image_buf, ulong image_len,
 262                         ulong *load_end)
 263 {
 264         const char *type_name = genimg_get_type_name(type);
 265         __attribute__((unused)) uint unc_len = CONFIG_SYS_BOOTM_LEN;
 266
 267         *load_end = load;
 268         switch (comp) {
 269         case IH_COMP_NONE:
 270                 if (load == image_start) {
 271                         printf("   XIP %s ... ", type_name);
 272                 } else {
 273                         printf("   Loading %s ... ", type_name);
 274                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 275                 }
 276                 *load_end = load + image_len;
 277                 break;
 278 #ifdef CONFIG_GZIP
 279         case IH_COMP_GZIP:
 280                 printf("   Uncompressing %s ... ", type_name);
 281                 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) {
 282                         puts("GUNZIP: uncompress, out-of-mem or overwrite error - must RESET board to recover\n");
 283                         return BOOTM_ERR_RESET;
 284                 }
 285
 286                 *load_end = load + image_len;
 287                 break;
 288 #endif /* CONFIG_GZIP */
 289 #ifdef CONFIG_BZIP2
 290         case IH_COMP_BZIP2:
 291                 printf("   Uncompressing %s ... ", type_name);
 292                 /*
 293                  * If we've got less than 4 MB of malloc() space,
 294                  * use slower decompression algorithm which requires
 295                  * at most 2300 KB of memory.
 296                  */
 297                 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len,
 298                         image_buf, image_len,
 299                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 300                 if (i != BZ_OK) {
 301                         printf("BUNZIP2: uncompress or overwrite error %d - must RESET board to recover\n",
 302                                i);
 303                         return BOOTM_ERR_RESET;
 304                 }
 305
 306                 *load_end = load + unc_len;
 307                 break;
 308 #endif /* CONFIG_BZIP2 */
 309 #ifdef CONFIG_LZMA
 310         case IH_COMP_LZMA: {
 311                 SizeT lzma_len = unc_len;
 312                 int ret;
 313
 314                 printf("   Uncompressing %s ... ", type_name);
 315
 316                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 317                                                image_buf, image_len);
 318                 unc_len = lzma_len;
 319                 if (ret != SZ_OK) {
 320                         printf("LZMA: uncompress or overwrite error %d - must RESET board to recover\n",
 321                                ret);
 322                         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 323                         return BOOTM_ERR_RESET;
 324                 }
 325                 *load_end = load + unc_len;
 326                 break;
 327         }
 328 #endif /* CONFIG_LZMA */
 329 #ifdef CONFIG_LZO
 330         case IH_COMP_LZO: {
 331                 size_t size = unc_len;
 332                 int ret;
 333
 334                 printf("   Uncompressing %s ... ", type_name);
 335
 336                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 337                 if (ret != LZO_E_OK) {
 338                         printf("LZO: uncompress or overwrite error %d - must RESET board to recover\n",
 339                                ret);
 340                         return BOOTM_ERR_RESET;
 341                 }
 342
 343                 *load_end = load + size;
 344                 break;
 345         }
 346 #endif /* CONFIG_LZO */
 347         default:
 348                 printf("Unimplemented compression type %d\n", comp);
 349                 return BOOTM_ERR_UNIMPLEMENTED;
 350         }
 351
 352         puts("OK\n");
 353
 354         return 0;
 355 }
 356
 357 #ifndef USE_HOSTCC
 358 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
 359                          int boot_progress)
 360 {
 361         image_info_t os = images->os;
 362         ulong load = os.load;
 363         ulong blob_start = os.start;
 364         ulong blob_end = os.end;
 365         ulong image_start = os.image_start;
 366         ulong image_len = os.image_len;
 367         bool no_overlap;
 368         void *load_buf, *image_buf;
 369         int err;
 370
 371         load_buf = map_sysmem(load, 0);
 372         image_buf = map_sysmem(os.image_start, image_len);
 373         err = decomp_image(os.comp, load, os.image_start, os.type, load_buf,
 374                            image_buf, image_len, load_end);
 375         if (err) {
 376                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 377                 return err;
 378         }
 379         flush_cache(load, (*load_end - load) * sizeof(ulong));
 380
 381         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 382         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 383
 384         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 385
 386         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
 387                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 388                       blob_start, blob_end);
 389                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 390                       *load_end);
 391
 392                 /* Check what type of image this is. */
 393                 if (images->legacy_hdr_valid) {
 394                         if (image_get_type(&images->legacy_hdr_os_copy)
 395                                         == IH_TYPE_MULTI)
 396                                 puts("WARNING: legacy format multi component image overwritten\n");
 397                         return BOOTM_ERR_OVERLAP;
 398                 } else {
 399                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 400                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 401                         return BOOTM_ERR_RESET;
 402                 }
 403         }
 404
 405         return 0;
 406 }
 407
 408 /**
 409  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 410  *
 411  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 412  *      enabled)
 413  */
 414 ulong bootm_disable_interrupts(void)
 415 {
 416         ulong iflag;
 417
 418         /*
 419          * We have reached the point of no return: we are going to
 420          * overwrite all exception vector code, so we cannot easily
 421          * recover from any failures any more...
 422          */
 423         iflag = disable_interrupts();
 424 #ifdef CONFIG_NETCONSOLE
 425         /* Stop the ethernet stack if NetConsole could have left it up */
 426         eth_halt();
 427         eth_unregister(eth_get_dev());
 428 #endif
 429
 430 #if defined(CONFIG_CMD_USB)
 431         /*
 432          * turn off USB to prevent the host controller from writing to the
 433          * SDRAM while Linux is booting. This could happen (at least for OHCI
 434          * controller), because the HCCA (Host Controller Communication Area)
 435          * lies within the SDRAM and the host controller writes continously to
 436          * this area (as busmaster!). The HccaFrameNumber is for example
 437          * updated every 1 ms within the HCCA structure in SDRAM! For more
 438          * details see the OpenHCI specification.
 439          */
 440         usb_stop();
 441 #endif
 442         return iflag;
 443 }
 444
 445 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 446
 447 #define CONSOLE_ARG     "console="
 448 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 449
 450 static void fixup_silent_linux(void)
 451 {
 452         char *buf;
 453         const char *env_val;
 454         char *cmdline = getenv("bootargs");
 455         int want_silent;
 456
 457         /*
 458          * Only fix cmdline when requested. The environment variable can be:
 459          *
 460          *      no - we never fixup
 461          *      yes - we always fixup
 462          *      unset - we rely on the console silent flag
 463          */
 464         want_silent = getenv_yesno("silent_linux");
 465         if (want_silent == 0)
 466                 return;
 467         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 468                 return;
 469
 470         debug("before silent fix-up: %s\n", cmdline);
 471         if (cmdline && (cmdline[0] != '\0')) {
 472                 char *start = strstr(cmdline, CONSOLE_ARG);
 473
 474                 /* Allocate space for maximum possible new command line */
 475                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 476                 if (!buf) {
 477                         debug("%s: out of memory\n", __func__);
 478                         return;
 479                 }
 480
 481                 if (start) {
 482                         char *end = strchr(start, ' ');
 483                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 484
 485                         strncpy(buf, cmdline, num_start_bytes);
 486                         if (end)
 487                                 strcpy(buf + num_start_bytes, end);
 488                         else
 489                                 buf[num_start_bytes] = '\0';
 490                 } else {
 491                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 492                 }
 493                 env_val = buf;
 494         } else {
 495                 buf = NULL;
 496                 env_val = CONSOLE_ARG;
 497         }
 498
 499         setenv("bootargs", env_val);
 500         debug("after silent fix-up: %s\n", env_val);
 501         free(buf);
 502 }
 503 #endif /* CONFIG_SILENT_CONSOLE */
 504
 505 /**
 506  * Execute selected states of the bootm command.
 507  *
 508  * Note the arguments to this state must be the first argument, Any 'bootm'
 509  * or sub-command arguments must have already been taken.
 510  *
 511  * Note that if states contains more than one flag it MUST contain
 512  * BOOTM_STATE_START, since this handles and consumes the command line args.
 513  *
 514  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 515  * functions we store the return value of in 'ret' may use a negative return
 516  * value, without special handling.
 517  *
 518  * @param cmdtp         Pointer to bootm command table entry
 519  * @param flag          Command flags (CMD_FLAG_...)
 520  * @param argc          Number of subcommand arguments (0 = no arguments)
 521  * @param argv          Arguments
 522  * @param states        Mask containing states to run (BOOTM_STATE_...)
 523  * @param images        Image header information
 524  * @param boot_progress 1 to show boot progress, 0 to not do this
 525  * @return 0 if ok, something else on error. Some errors will cause this
 526  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 527  *      then the intent is to boot an OS, so this function will not return
 528  *      unless the image type is standalone.
 529  */
 530 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 531                     int states, bootm_headers_t *images, int boot_progress)
 532 {
 533         boot_os_fn *boot_fn;
 534         ulong iflag = 0;
 535         int ret = 0, need_boot_fn;
 536
 537         images->state |= states;
 538
 539         /*
 540          * Work through the states and see how far we get. We stop on
 541          * any error.
 542          */
 543         if (states & BOOTM_STATE_START)
 544                 ret = bootm_start(cmdtp, flag, argc, argv);
 545
 546         if (!ret && (states & BOOTM_STATE_FINDOS))
 547                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 548
 549         if (!ret && (states & BOOTM_STATE_FINDOTHER)) {
 550                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 551                 argc = 0;       /* consume the args */
 552         }
 553
 554         /* Load the OS */
 555         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 556                 ulong load_end;
 557
 558                 iflag = bootm_disable_interrupts();
 559                 ret = bootm_load_os(images, &load_end, 0);
 560                 if (ret == 0)
 561                         lmb_reserve(&images->lmb, images->os.load,
 562                                     (load_end - images->os.load));
 563                 else if (ret && ret != BOOTM_ERR_OVERLAP)
 564                         goto err;
 565                 else if (ret == BOOTM_ERR_OVERLAP)
 566                         ret = 0;
 567 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 568                 if (images->os.os == IH_OS_LINUX)
 569                         fixup_silent_linux();
 570 #endif
 571         }
 572
 573         /* Relocate the ramdisk */
 574 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 575         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 576                 ulong rd_len = images->rd_end - images->rd_start;
 577
 578                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 579                         rd_len, &images->initrd_start, &images->initrd_end);
 580                 if (!ret) {
 581                         setenv_hex("initrd_start", images->initrd_start);
 582                         setenv_hex("initrd_end", images->initrd_end);
 583                 }
 584         }
 585 #endif
 586 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
 587         if (!ret && (states & BOOTM_STATE_FDT)) {
 588                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 589                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 590                                         &images->ft_len);
 591         }
 592 #endif
 593
 594         /* From now on, we need the OS boot function */
 595         if (ret)
 596                 return ret;
 597         boot_fn = bootm_os_get_boot_func(images->os.os);
 598         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 599                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 600                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 601         if (boot_fn == NULL && need_boot_fn) {
 602                 if (iflag)
 603                         enable_interrupts();
 604                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 605                        genimg_get_os_name(images->os.os), images->os.os);
 606                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 607                 return 1;
 608         }
 609
 610         /* Call various other states that are not generally used */
 611         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 612                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 613         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 614                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 615         if (!ret && (states & BOOTM_STATE_OS_PREP))
 616                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 617
 618 #ifdef CONFIG_TRACE
 619         /* Pretend to run the OS, then run a user command */
 620         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 621                 char *cmd_list = getenv("fakegocmd");
 622
 623                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 624                                 images, boot_fn);
 625                 if (!ret && cmd_list)
 626                         ret = run_command_list(cmd_list, -1, flag);
 627         }
 628 #endif
 629
 630         /* Check for unsupported subcommand. */
 631         if (ret) {
 632                 puts("subcommand not supported\n");
 633                 return ret;
 634         }
 635
 636         /* Now run the OS! We hope this doesn't return */
 637         if (!ret && (states & BOOTM_STATE_OS_GO))
 638                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 639                                 images, boot_fn);
 640
 641         /* Deal with any fallout */
 642 err:
 643         if (iflag)
 644                 enable_interrupts();
 645
 646         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 647                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 648         else if (ret == BOOTM_ERR_RESET)
 649                 do_reset(cmdtp, flag, argc, argv);
 650
 651         return ret;
 652 }
 653
 654 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 655 /**
 656  * image_get_kernel - verify legacy format kernel image
 657  * @img_addr: in RAM address of the legacy format image to be verified
 658  * @verify: data CRC verification flag
 659  *
 660  * image_get_kernel() verifies legacy image integrity and returns pointer to
 661  * legacy image header if image verification was completed successfully.
 662  *
 663  * returns:
 664  *     pointer to a legacy image header if valid image was found
 665  *     otherwise return NULL
 666  */
 667 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 668 {
 669         image_header_t *hdr = (image_header_t *)img_addr;
 670
 671         if (!image_check_magic(hdr)) {
 672                 puts("Bad Magic Number\n");
 673                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 674                 return NULL;
 675         }
 676         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 677
 678         if (!image_check_hcrc(hdr)) {
 679                 puts("Bad Header Checksum\n");
 680                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 681                 return NULL;
 682         }
 683
 684         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 685         image_print_contents(hdr);
 686
 687         if (verify) {
 688                 puts("   Verifying Checksum ... ");
 689                 if (!image_check_dcrc(hdr)) {
 690                         printf("Bad Data CRC\n");
 691                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 692                         return NULL;
 693                 }
 694                 puts("OK\n");
 695         }
 696         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 697
 698         if (!image_check_target_arch(hdr)) {
 699                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 700                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 701                 return NULL;
 702         }
 703         return hdr;
 704 }
 705 #endif
 706
 707 /**
 708  * boot_get_kernel - find kernel image
 709  * @os_data: pointer to a ulong variable, will hold os data start address
 710  * @os_len: pointer to a ulong variable, will hold os data length
 711  *
 712  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 713  * and locates kernel data.
 714  *
 715  * returns:
 716  *     pointer to image header if valid image was found, plus kernel start
 717  *     address and length, otherwise NULL
 718  */
 719 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 720                                    char * const argv[], bootm_headers_t *images,
 721                                    ulong *os_data, ulong *os_len)
 722 {
 723 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 724         image_header_t  *hdr;
 725 #endif
 726         ulong           img_addr;
 727         const void *buf;
 728 #if defined(CONFIG_FIT)
 729         const char      *fit_uname_config = NULL;
 730         const char      *fit_uname_kernel = NULL;
 731         int             os_noffset;
 732 #endif
 733
 734         /* find out kernel image address */
 735         if (argc < 1) {
 736                 img_addr = load_addr;
 737                 debug("*  kernel: default image load address = 0x%08lx\n",
 738                       load_addr);
 739 #if defined(CONFIG_FIT)
 740         } else if (fit_parse_conf(argv[0], load_addr, &img_addr,
 741                                   &fit_uname_config)) {
 742                 debug("*  kernel: config '%s' from image at 0x%08lx\n",
 743                       fit_uname_config, img_addr);
 744         } else if (fit_parse_subimage(argv[0], load_addr, &img_addr,
 745                                      &fit_uname_kernel)) {
 746                 debug("*  kernel: subimage '%s' from image at 0x%08lx\n",
 747                       fit_uname_kernel, img_addr);
 748 #endif
 749         } else {
 750                 img_addr = simple_strtoul(argv[0], NULL, 16);
 751                 debug("*  kernel: cmdline image address = 0x%08lx\n",
 752                       img_addr);
 753         }
 754
 755         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 756
 757         /* copy from dataflash if needed */
 758         img_addr = genimg_get_image(img_addr);
 759
 760         /* check image type, for FIT images get FIT kernel node */
 761         *os_data = *os_len = 0;
 762         buf = map_sysmem(img_addr, 0);
 763         switch (genimg_get_format(buf)) {
 764 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 765         case IMAGE_FORMAT_LEGACY:
 766                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 767                        img_addr);
 768                 hdr = image_get_kernel(img_addr, images->verify);
 769                 if (!hdr)
 770                         return NULL;
 771                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 772
 773                 /* get os_data and os_len */
 774                 switch (image_get_type(hdr)) {
 775                 case IH_TYPE_KERNEL:
 776                 case IH_TYPE_KERNEL_NOLOAD:
 777                         *os_data = image_get_data(hdr);
 778                         *os_len = image_get_data_size(hdr);
 779                         break;
 780                 case IH_TYPE_MULTI:
 781                         image_multi_getimg(hdr, 0, os_data, os_len);
 782                         break;
 783                 case IH_TYPE_STANDALONE:
 784                         *os_data = image_get_data(hdr);
 785                         *os_len = image_get_data_size(hdr);
 786                         break;
 787                 default:
 788                         printf("Wrong Image Type for %s command\n",
 789                                cmdtp->name);
 790                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 791                         return NULL;
 792                 }
 793
 794                 /*
 795                  * copy image header to allow for image overwrites during
 796                  * kernel decompression.
 797                  */
 798                 memmove(&images->legacy_hdr_os_copy, hdr,
 799                         sizeof(image_header_t));
 800
 801                 /* save pointer to image header */
 802                 images->legacy_hdr_os = hdr;
 803
 804                 images->legacy_hdr_valid = 1;
 805                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 806                 break;
 807 #endif
 808 #if defined(CONFIG_FIT)
 809         case IMAGE_FORMAT_FIT:
 810                 os_noffset = fit_image_load(images, img_addr,
 811                                 &fit_uname_kernel, &fit_uname_config,
 812                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 813                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 814                                 FIT_LOAD_IGNORED, os_data, os_len);
 815                 if (os_noffset < 0)
 816                         return NULL;
 817
 818                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 819                 images->fit_uname_os = fit_uname_kernel;
 820                 images->fit_uname_cfg = fit_uname_config;
 821                 images->fit_noffset_os = os_noffset;
 822                 break;
 823 #endif
 824 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 825         case IMAGE_FORMAT_ANDROID:
 826                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 827                 if (android_image_get_kernel(buf, images->verify,
 828                                              os_data, os_len))
 829                         return NULL;
 830                 break;
 831 #endif
 832         default:
 833                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 834                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 835                 return NULL;
 836         }
 837
 838         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 839               *os_data, *os_len, *os_len);
 840
 841         return buf;
 842 }
 843 #else /* USE_HOSTCC */
 844
 845 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
 846 {
 847         memmove(to, from, len);
 848 }
 849
 850 static int bootm_host_load_image(const void *fit, int req_image_type)
 851 {
 852         const char *fit_uname_config = NULL;
 853         ulong data, len;
 854         bootm_headers_t images;
 855         int noffset;
 856         ulong load_end;
 857         uint8_t image_type;
 858         uint8_t imape_comp;
 859         void *load_buf;
 860         int ret;
 861
 862         memset(&images, '\0', sizeof(images));
 863         images.verify = 1;
 864         noffset = fit_image_load(&images, (ulong)fit,
 865                 NULL, &fit_uname_config,
 866                 IH_ARCH_DEFAULT, req_image_type, -1,
 867                 FIT_LOAD_IGNORED, &data, &len);
 868         if (noffset < 0)
 869                 return noffset;
 870         if (fit_image_get_type(fit, noffset, &image_type)) {
 871                 puts("Can't get image type!\n");
 872                 return -EINVAL;
 873         }
 874
 875         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 876                 puts("Can't get image compression!\n");
 877                 return -EINVAL;
 878         }
 879
 880         /* Allow the image to expand by a factor of 4, should be safe */
 881         load_buf = malloc((1 << 20) + len * 4);
 882         ret = decomp_image(imape_comp, 0, data, image_type, load_buf,
 883                            (void *)data, len, &load_end);
 884         free(load_buf);
 885         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
 886                 return ret;
 887
 888         return 0;
 889 }
 890
 891 int bootm_host_load_images(const void *fit, int cfg_noffset)
 892 {
 893         static uint8_t image_types[] = {
 894                 IH_TYPE_KERNEL,
 895                 IH_TYPE_FLATDT,
 896                 IH_TYPE_RAMDISK,
 897         };
 898         int err = 0;
 899         int i;
 900
 901         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 902                 int ret;
 903
 904                 ret = bootm_host_load_image(fit, image_types[i]);
 905                 if (!err && ret && ret != -ENOENT)
 906                         err = ret;
 907         }
 908
 909         /* Return the first error we found */
 910         return err;
 911 }
 912
 913 #endif /* ndef USE_HOSTCC */