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 <env.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 #if defined(CONFIG_CMD_USB)
  18 #include <usb.h>
  19 #endif
  20 #else
  21 #include "mkimage.h"
  22 #endif
  23
  24 #include <command.h>
  25 #include <bootm.h>
  26 #include <image.h>
  27
  28 #ifndef CONFIG_SYS_BOOTM_LEN
  29 /* use 8MByte as default max gunzip size */
  30 #define CONFIG_SYS_BOOTM_LEN    0x800000
  31 #endif
  32
  33 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  34
  35 #ifndef USE_HOSTCC
  36
  37 DECLARE_GLOBAL_DATA_PTR;
  38
  39 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
  40
  41 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  42                                    char * const argv[], bootm_headers_t *images,
  43                                    ulong *os_data, ulong *os_len);
  44
  45 __weak void board_quiesce_devices(void)
  46 {
  47 }
  48
  49 #ifdef CONFIG_LMB
  50 static void boot_start_lmb(bootm_headers_t *images)
  51 {
  52         ulong           mem_start;
  53         phys_size_t     mem_size;
  54
  55         mem_start = env_get_bootm_low();
  56         mem_size = env_get_bootm_size();
  57
  58         lmb_init_and_reserve_range(&images->lmb, (phys_addr_t)mem_start,
  59                                    mem_size, NULL);
  60 }
  61 #else
  62 #define lmb_reserve(lmb, base, size)
  63 static inline void boot_start_lmb(bootm_headers_t *images) { }
  64 #endif
  65
  66 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
  67                        char * const argv[])
  68 {
  69         memset((void *)&images, 0, sizeof(images));
  70         images.verify = env_get_yesno("verify");
  71
  72         boot_start_lmb(&images);
  73
  74         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  75         images.state = BOOTM_STATE_START;
  76
  77         return 0;
  78 }
  79
  80 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
  81                          char * const argv[])
  82 {
  83         const void *os_hdr;
  84         bool ep_found = false;
  85         int ret;
  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 CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  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                 images.os.arch = image_get_arch(os_hdr);
 106                 break;
 107 #endif
 108 #if IMAGE_ENABLE_FIT
 109         case IMAGE_FORMAT_FIT:
 110                 if (fit_image_get_type(images.fit_hdr_os,
 111                                        images.fit_noffset_os,
 112                                        &images.os.type)) {
 113                         puts("Can't get image type!\n");
 114                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 115                         return 1;
 116                 }
 117
 118                 if (fit_image_get_comp(images.fit_hdr_os,
 119                                        images.fit_noffset_os,
 120                                        &images.os.comp)) {
 121                         puts("Can't get image compression!\n");
 122                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 123                         return 1;
 124                 }
 125
 126                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 127                                      &images.os.os)) {
 128                         puts("Can't get image OS!\n");
 129                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 130                         return 1;
 131                 }
 132
 133                 if (fit_image_get_arch(images.fit_hdr_os,
 134                                        images.fit_noffset_os,
 135                                        &images.os.arch)) {
 136                         puts("Can't get image ARCH!\n");
 137                         return 1;
 138                 }
 139
 140                 images.os.end = fit_get_end(images.fit_hdr_os);
 141
 142                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 143                                        &images.os.load)) {
 144                         puts("Can't get image load address!\n");
 145                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 146                         return 1;
 147                 }
 148                 break;
 149 #endif
 150 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 151         case IMAGE_FORMAT_ANDROID:
 152                 images.os.type = IH_TYPE_KERNEL;
 153                 images.os.comp = android_image_get_kcomp(os_hdr);
 154                 images.os.os = IH_OS_LINUX;
 155
 156                 images.os.end = android_image_get_end(os_hdr);
 157                 images.os.load = android_image_get_kload(os_hdr);
 158                 images.ep = images.os.load;
 159                 ep_found = true;
 160                 break;
 161 #endif
 162         default:
 163                 puts("ERROR: unknown image format type!\n");
 164                 return 1;
 165         }
 166
 167         /* If we have a valid setup.bin, we will use that for entry (x86) */
 168         if (images.os.arch == IH_ARCH_I386 ||
 169             images.os.arch == IH_ARCH_X86_64) {
 170                 ulong len;
 171
 172                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 173                 if (ret < 0 && ret != -ENOENT) {
 174                         puts("Could not find a valid setup.bin for x86\n");
 175                         return 1;
 176                 }
 177                 /* Kernel entry point is the setup.bin */
 178         } else if (images.legacy_hdr_valid) {
 179                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 180 #if IMAGE_ENABLE_FIT
 181         } else if (images.fit_uname_os) {
 182                 int ret;
 183
 184                 ret = fit_image_get_entry(images.fit_hdr_os,
 185                                           images.fit_noffset_os, &images.ep);
 186                 if (ret) {
 187                         puts("Can't get entry point property!\n");
 188                         return 1;
 189                 }
 190 #endif
 191         } else if (!ep_found) {
 192                 puts("Could not find kernel entry point!\n");
 193                 return 1;
 194         }
 195
 196         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 197                 if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
 198                     images.os.arch == IH_ARCH_ARM64) {
 199                         ulong image_addr;
 200                         ulong image_size;
 201
 202                         ret = booti_setup(images.os.image_start, &image_addr,
 203                                           &image_size, true);
 204                         if (ret != 0)
 205                                 return 1;
 206
 207                         images.os.type = IH_TYPE_KERNEL;
 208                         images.os.load = image_addr;
 209                         images.ep = image_addr;
 210                 } else {
 211                         images.os.load = images.os.image_start;
 212                         images.ep += images.os.image_start;
 213                 }
 214         }
 215
 216         images.os.start = map_to_sysmem(os_hdr);
 217
 218         return 0;
 219 }
 220
 221 /**
 222  * bootm_find_images - wrapper to find and locate various images
 223  * @flag: Ignored Argument
 224  * @argc: command argument count
 225  * @argv: command argument list
 226  *
 227  * boot_find_images() will attempt to load an available ramdisk,
 228  * flattened device tree, as well as specifically marked
 229  * "loadable" images (loadables are FIT only)
 230  *
 231  * Note: bootm_find_images will skip an image if it is not found
 232  *
 233  * @return:
 234  *     0, if all existing images were loaded correctly
 235  *     1, if an image is found but corrupted, or invalid
 236  */
 237 int bootm_find_images(int flag, int argc, char * const argv[])
 238 {
 239         int ret;
 240
 241         /* find ramdisk */
 242         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 243                                &images.rd_start, &images.rd_end);
 244         if (ret) {
 245                 puts("Ramdisk image is corrupt or invalid\n");
 246                 return 1;
 247         }
 248
 249 #if IMAGE_ENABLE_OF_LIBFDT
 250         /* find flattened device tree */
 251         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 252                            &images.ft_addr, &images.ft_len);
 253         if (ret) {
 254                 puts("Could not find a valid device tree\n");
 255                 return 1;
 256         }
 257         if (CONFIG_IS_ENABLED(CMD_FDT))
 258                 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
 259 #endif
 260
 261 #if IMAGE_ENABLE_FIT
 262 #if defined(CONFIG_FPGA)
 263         /* find bitstreams */
 264         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 265                             NULL, NULL);
 266         if (ret) {
 267                 printf("FPGA image is corrupted or invalid\n");
 268                 return 1;
 269         }
 270 #endif
 271
 272         /* find all of the loadables */
 273         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 274                                NULL, NULL);
 275         if (ret) {
 276                 printf("Loadable(s) is corrupt or invalid\n");
 277                 return 1;
 278         }
 279 #endif
 280
 281         return 0;
 282 }
 283
 284 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 285                             char * const argv[])
 286 {
 287         if (((images.os.type == IH_TYPE_KERNEL) ||
 288              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 289              (images.os.type == IH_TYPE_MULTI)) &&
 290             (images.os.os == IH_OS_LINUX ||
 291                  images.os.os == IH_OS_VXWORKS))
 292                 return bootm_find_images(flag, argc, argv);
 293
 294         return 0;
 295 }
 296 #endif /* USE_HOSTC */
 297
 298 #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
 299 /**
 300  * handle_decomp_error() - display a decompression error
 301  *
 302  * This function tries to produce a useful message. In the case where the
 303  * uncompressed size is the same as the available space, we can assume that
 304  * the image is too large for the buffer.
 305  *
 306  * @comp_type:          Compression type being used (IH_COMP_...)
 307  * @uncomp_size:        Number of bytes uncompressed
 308  * @ret:                errno error code received from compression library
 309  * @return Appropriate BOOTM_ERR_ error code
 310  */
 311 static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret)
 312 {
 313         const char *name = genimg_get_comp_name(comp_type);
 314
 315         /* ENOSYS means unimplemented compression type, don't reset. */
 316         if (ret == -ENOSYS)
 317                 return BOOTM_ERR_UNIMPLEMENTED;
 318
 319         if (uncomp_size >= CONFIG_SYS_BOOTM_LEN)
 320                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 321         else
 322                 printf("%s: uncompress error %d\n", name, ret);
 323
 324         /*
 325          * The decompression routines are now safe, so will not write beyond
 326          * their bounds. Probably it is not necessary to reset, but maintain
 327          * the current behaviour for now.
 328          */
 329         printf("Must RESET board to recover\n");
 330 #ifndef USE_HOSTCC
 331         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 332 #endif
 333
 334         return BOOTM_ERR_RESET;
 335 }
 336 #endif
 337
 338 #ifndef USE_HOSTCC
 339 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
 340 {
 341         image_info_t os = images->os;
 342         ulong load = os.load;
 343         ulong load_end;
 344         ulong blob_start = os.start;
 345         ulong blob_end = os.end;
 346         ulong image_start = os.image_start;
 347         ulong image_len = os.image_len;
 348         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 349         bool no_overlap;
 350         void *load_buf, *image_buf;
 351         int err;
 352
 353         load_buf = map_sysmem(load, 0);
 354         image_buf = map_sysmem(os.image_start, image_len);
 355         err = image_decomp(os.comp, load, os.image_start, os.type,
 356                            load_buf, image_buf, image_len,
 357                            CONFIG_SYS_BOOTM_LEN, &load_end);
 358         if (err) {
 359                 err = handle_decomp_error(os.comp, load_end - load, err);
 360                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 361                 return err;
 362         }
 363
 364         flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
 365
 366         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 367         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 368
 369         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 370
 371         if (!no_overlap && load < blob_end && load_end > blob_start) {
 372                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 373                       blob_start, blob_end);
 374                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 375                       load_end);
 376
 377                 /* Check what type of image this is. */
 378                 if (images->legacy_hdr_valid) {
 379                         if (image_get_type(&images->legacy_hdr_os_copy)
 380                                         == IH_TYPE_MULTI)
 381                                 puts("WARNING: legacy format multi component image overwritten\n");
 382                         return BOOTM_ERR_OVERLAP;
 383                 } else {
 384                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 385                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 386                         return BOOTM_ERR_RESET;
 387                 }
 388         }
 389
 390         lmb_reserve(&images->lmb, images->os.load, (load_end -
 391                                                     images->os.load));
 392         return 0;
 393 }
 394
 395 /**
 396  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 397  *
 398  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 399  *      enabled)
 400  */
 401 ulong bootm_disable_interrupts(void)
 402 {
 403         ulong iflag;
 404
 405         /*
 406          * We have reached the point of no return: we are going to
 407          * overwrite all exception vector code, so we cannot easily
 408          * recover from any failures any more...
 409          */
 410         iflag = disable_interrupts();
 411 #ifdef CONFIG_NETCONSOLE
 412         /* Stop the ethernet stack if NetConsole could have left it up */
 413         eth_halt();
 414 # ifndef CONFIG_DM_ETH
 415         eth_unregister(eth_get_dev());
 416 # endif
 417 #endif
 418
 419 #if defined(CONFIG_CMD_USB)
 420         /*
 421          * turn off USB to prevent the host controller from writing to the
 422          * SDRAM while Linux is booting. This could happen (at least for OHCI
 423          * controller), because the HCCA (Host Controller Communication Area)
 424          * lies within the SDRAM and the host controller writes continously to
 425          * this area (as busmaster!). The HccaFrameNumber is for example
 426          * updated every 1 ms within the HCCA structure in SDRAM! For more
 427          * details see the OpenHCI specification.
 428          */
 429         usb_stop();
 430 #endif
 431         return iflag;
 432 }
 433
 434 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 435
 436 #define CONSOLE_ARG     "console="
 437 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 438
 439 static void fixup_silent_linux(void)
 440 {
 441         char *buf;
 442         const char *env_val;
 443         char *cmdline = env_get("bootargs");
 444         int want_silent;
 445
 446         /*
 447          * Only fix cmdline when requested. The environment variable can be:
 448          *
 449          *      no - we never fixup
 450          *      yes - we always fixup
 451          *      unset - we rely on the console silent flag
 452          */
 453         want_silent = env_get_yesno("silent_linux");
 454         if (want_silent == 0)
 455                 return;
 456         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 457                 return;
 458
 459         debug("before silent fix-up: %s\n", cmdline);
 460         if (cmdline && (cmdline[0] != '\0')) {
 461                 char *start = strstr(cmdline, CONSOLE_ARG);
 462
 463                 /* Allocate space for maximum possible new command line */
 464                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 465                 if (!buf) {
 466                         debug("%s: out of memory\n", __func__);
 467                         return;
 468                 }
 469
 470                 if (start) {
 471                         char *end = strchr(start, ' ');
 472                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 473
 474                         strncpy(buf, cmdline, num_start_bytes);
 475                         if (end)
 476                                 strcpy(buf + num_start_bytes, end);
 477                         else
 478                                 buf[num_start_bytes] = '\0';
 479                 } else {
 480                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 481                 }
 482                 env_val = buf;
 483         } else {
 484                 buf = NULL;
 485                 env_val = CONSOLE_ARG;
 486         }
 487
 488         env_set("bootargs", env_val);
 489         debug("after silent fix-up: %s\n", env_val);
 490         free(buf);
 491 }
 492 #endif /* CONFIG_SILENT_CONSOLE */
 493
 494 /**
 495  * Execute selected states of the bootm command.
 496  *
 497  * Note the arguments to this state must be the first argument, Any 'bootm'
 498  * or sub-command arguments must have already been taken.
 499  *
 500  * Note that if states contains more than one flag it MUST contain
 501  * BOOTM_STATE_START, since this handles and consumes the command line args.
 502  *
 503  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 504  * functions we store the return value of in 'ret' may use a negative return
 505  * value, without special handling.
 506  *
 507  * @param cmdtp         Pointer to bootm command table entry
 508  * @param flag          Command flags (CMD_FLAG_...)
 509  * @param argc          Number of subcommand arguments (0 = no arguments)
 510  * @param argv          Arguments
 511  * @param states        Mask containing states to run (BOOTM_STATE_...)
 512  * @param images        Image header information
 513  * @param boot_progress 1 to show boot progress, 0 to not do this
 514  * @return 0 if ok, something else on error. Some errors will cause this
 515  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 516  *      then the intent is to boot an OS, so this function will not return
 517  *      unless the image type is standalone.
 518  */
 519 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 520                     int states, bootm_headers_t *images, int boot_progress)
 521 {
 522         boot_os_fn *boot_fn;
 523         ulong iflag = 0;
 524         int ret = 0, need_boot_fn;
 525
 526         images->state |= states;
 527
 528         /*
 529          * Work through the states and see how far we get. We stop on
 530          * any error.
 531          */
 532         if (states & BOOTM_STATE_START)
 533                 ret = bootm_start(cmdtp, flag, argc, argv);
 534
 535         if (!ret && (states & BOOTM_STATE_FINDOS))
 536                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 537
 538         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 539                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 540
 541         /* Load the OS */
 542         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 543                 iflag = bootm_disable_interrupts();
 544                 ret = bootm_load_os(images, 0);
 545                 if (ret && ret != BOOTM_ERR_OVERLAP)
 546                         goto err;
 547                 else if (ret == BOOTM_ERR_OVERLAP)
 548                         ret = 0;
 549         }
 550
 551         /* Relocate the ramdisk */
 552 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 553         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 554                 ulong rd_len = images->rd_end - images->rd_start;
 555
 556                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 557                         rd_len, &images->initrd_start, &images->initrd_end);
 558                 if (!ret) {
 559                         env_set_hex("initrd_start", images->initrd_start);
 560                         env_set_hex("initrd_end", images->initrd_end);
 561                 }
 562         }
 563 #endif
 564 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
 565         if (!ret && (states & BOOTM_STATE_FDT)) {
 566                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 567                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 568                                         &images->ft_len);
 569         }
 570 #endif
 571
 572         /* From now on, we need the OS boot function */
 573         if (ret)
 574                 return ret;
 575         boot_fn = bootm_os_get_boot_func(images->os.os);
 576         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 577                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 578                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 579         if (boot_fn == NULL && need_boot_fn) {
 580                 if (iflag)
 581                         enable_interrupts();
 582                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 583                        genimg_get_os_name(images->os.os), images->os.os);
 584                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 585                 return 1;
 586         }
 587
 588
 589         /* Call various other states that are not generally used */
 590         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 591                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 592         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 593                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 594         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 595 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 596                 if (images->os.os == IH_OS_LINUX)
 597                         fixup_silent_linux();
 598 #endif
 599                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 600         }
 601
 602 #ifdef CONFIG_TRACE
 603         /* Pretend to run the OS, then run a user command */
 604         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 605                 char *cmd_list = env_get("fakegocmd");
 606
 607                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 608                                 images, boot_fn);
 609                 if (!ret && cmd_list)
 610                         ret = run_command_list(cmd_list, -1, flag);
 611         }
 612 #endif
 613
 614         /* Check for unsupported subcommand. */
 615         if (ret) {
 616                 puts("subcommand not supported\n");
 617                 return ret;
 618         }
 619
 620         /* Now run the OS! We hope this doesn't return */
 621         if (!ret && (states & BOOTM_STATE_OS_GO))
 622                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 623                                 images, boot_fn);
 624
 625         /* Deal with any fallout */
 626 err:
 627         if (iflag)
 628                 enable_interrupts();
 629
 630         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 631                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 632         else if (ret == BOOTM_ERR_RESET)
 633                 do_reset(cmdtp, flag, argc, argv);
 634
 635         return ret;
 636 }
 637
 638 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 639 /**
 640  * image_get_kernel - verify legacy format kernel image
 641  * @img_addr: in RAM address of the legacy format image to be verified
 642  * @verify: data CRC verification flag
 643  *
 644  * image_get_kernel() verifies legacy image integrity and returns pointer to
 645  * legacy image header if image verification was completed successfully.
 646  *
 647  * returns:
 648  *     pointer to a legacy image header if valid image was found
 649  *     otherwise return NULL
 650  */
 651 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 652 {
 653         image_header_t *hdr = (image_header_t *)img_addr;
 654
 655         if (!image_check_magic(hdr)) {
 656                 puts("Bad Magic Number\n");
 657                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 658                 return NULL;
 659         }
 660         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 661
 662         if (!image_check_hcrc(hdr)) {
 663                 puts("Bad Header Checksum\n");
 664                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 665                 return NULL;
 666         }
 667
 668         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 669         image_print_contents(hdr);
 670
 671         if (verify) {
 672                 puts("   Verifying Checksum ... ");
 673                 if (!image_check_dcrc(hdr)) {
 674                         printf("Bad Data CRC\n");
 675                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 676                         return NULL;
 677                 }
 678                 puts("OK\n");
 679         }
 680         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 681
 682         if (!image_check_target_arch(hdr)) {
 683                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 684                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 685                 return NULL;
 686         }
 687         return hdr;
 688 }
 689 #endif
 690
 691 /**
 692  * boot_get_kernel - find kernel image
 693  * @os_data: pointer to a ulong variable, will hold os data start address
 694  * @os_len: pointer to a ulong variable, will hold os data length
 695  *
 696  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 697  * and locates kernel data.
 698  *
 699  * returns:
 700  *     pointer to image header if valid image was found, plus kernel start
 701  *     address and length, otherwise NULL
 702  */
 703 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 704                                    char * const argv[], bootm_headers_t *images,
 705                                    ulong *os_data, ulong *os_len)
 706 {
 707 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 708         image_header_t  *hdr;
 709 #endif
 710         ulong           img_addr;
 711         const void *buf;
 712         const char      *fit_uname_config = NULL;
 713         const char      *fit_uname_kernel = NULL;
 714 #if IMAGE_ENABLE_FIT
 715         int             os_noffset;
 716 #endif
 717
 718         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 719                                               &fit_uname_config,
 720                                               &fit_uname_kernel);
 721
 722         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 723
 724         /* check image type, for FIT images get FIT kernel node */
 725         *os_data = *os_len = 0;
 726         buf = map_sysmem(img_addr, 0);
 727         switch (genimg_get_format(buf)) {
 728 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 729         case IMAGE_FORMAT_LEGACY:
 730                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 731                        img_addr);
 732                 hdr = image_get_kernel(img_addr, images->verify);
 733                 if (!hdr)
 734                         return NULL;
 735                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 736
 737                 /* get os_data and os_len */
 738                 switch (image_get_type(hdr)) {
 739                 case IH_TYPE_KERNEL:
 740                 case IH_TYPE_KERNEL_NOLOAD:
 741                         *os_data = image_get_data(hdr);
 742                         *os_len = image_get_data_size(hdr);
 743                         break;
 744                 case IH_TYPE_MULTI:
 745                         image_multi_getimg(hdr, 0, os_data, os_len);
 746                         break;
 747                 case IH_TYPE_STANDALONE:
 748                         *os_data = image_get_data(hdr);
 749                         *os_len = image_get_data_size(hdr);
 750                         break;
 751                 default:
 752                         printf("Wrong Image Type for %s command\n",
 753                                cmdtp->name);
 754                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 755                         return NULL;
 756                 }
 757
 758                 /*
 759                  * copy image header to allow for image overwrites during
 760                  * kernel decompression.
 761                  */
 762                 memmove(&images->legacy_hdr_os_copy, hdr,
 763                         sizeof(image_header_t));
 764
 765                 /* save pointer to image header */
 766                 images->legacy_hdr_os = hdr;
 767
 768                 images->legacy_hdr_valid = 1;
 769                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 770                 break;
 771 #endif
 772 #if IMAGE_ENABLE_FIT
 773         case IMAGE_FORMAT_FIT:
 774                 os_noffset = fit_image_load(images, img_addr,
 775                                 &fit_uname_kernel, &fit_uname_config,
 776                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 777                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 778                                 FIT_LOAD_IGNORED, os_data, os_len);
 779                 if (os_noffset < 0)
 780                         return NULL;
 781
 782                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 783                 images->fit_uname_os = fit_uname_kernel;
 784                 images->fit_uname_cfg = fit_uname_config;
 785                 images->fit_noffset_os = os_noffset;
 786                 break;
 787 #endif
 788 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 789         case IMAGE_FORMAT_ANDROID:
 790                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 791                 if (android_image_get_kernel(buf, images->verify,
 792                                              os_data, os_len))
 793                         return NULL;
 794                 break;
 795 #endif
 796         default:
 797                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 798                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 799                 return NULL;
 800         }
 801
 802         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 803               *os_data, *os_len, *os_len);
 804
 805         return buf;
 806 }
 807
 808 /**
 809  * switch_to_non_secure_mode() - switch to non-secure mode
 810  *
 811  * This routine is overridden by architectures requiring this feature.
 812  */
 813 void __weak switch_to_non_secure_mode(void)
 814 {
 815 }
 816
 817 #else /* USE_HOSTCC */
 818
 819 #if defined(CONFIG_FIT_SIGNATURE)
 820 static int bootm_host_load_image(const void *fit, int req_image_type)
 821 {
 822         const char *fit_uname_config = NULL;
 823         ulong data, len;
 824         bootm_headers_t images;
 825         int noffset;
 826         ulong load_end;
 827         uint8_t image_type;
 828         uint8_t imape_comp;
 829         void *load_buf;
 830         int ret;
 831
 832         memset(&images, '\0', sizeof(images));
 833         images.verify = 1;
 834         noffset = fit_image_load(&images, (ulong)fit,
 835                 NULL, &fit_uname_config,
 836                 IH_ARCH_DEFAULT, req_image_type, -1,
 837                 FIT_LOAD_IGNORED, &data, &len);
 838         if (noffset < 0)
 839                 return noffset;
 840         if (fit_image_get_type(fit, noffset, &image_type)) {
 841                 puts("Can't get image type!\n");
 842                 return -EINVAL;
 843         }
 844
 845         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 846                 puts("Can't get image compression!\n");
 847                 return -EINVAL;
 848         }
 849
 850         /* Allow the image to expand by a factor of 4, should be safe */
 851         load_buf = malloc((1 << 20) + len * 4);
 852         ret = image_decomp(imape_comp, 0, data, image_type, load_buf,
 853                            (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 854                            &load_end);
 855         free(load_buf);
 856
 857         if (ret) {
 858                 ret = handle_decomp_error(imape_comp, load_end - 0, ret);
 859                 if (ret != BOOTM_ERR_UNIMPLEMENTED)
 860                         return ret;
 861         }
 862
 863         return 0;
 864 }
 865
 866 int bootm_host_load_images(const void *fit, int cfg_noffset)
 867 {
 868         static uint8_t image_types[] = {
 869                 IH_TYPE_KERNEL,
 870                 IH_TYPE_FLATDT,
 871                 IH_TYPE_RAMDISK,
 872         };
 873         int err = 0;
 874         int i;
 875
 876         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 877                 int ret;
 878
 879                 ret = bootm_host_load_image(fit, image_types[i]);
 880                 if (!err && ret && ret != -ENOENT)
 881                         err = ret;
 882         }
 883
 884         /* Return the first error we found */
 885         return err;
 886 }
 887 #endif
 888
 889 #endif /* ndef USE_HOSTCC */