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