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 <lmb.h>
  15 #include <malloc.h>
  16 #include <mapmem.h>
  17 #include <asm/io.h>
  18 #if defined(CONFIG_CMD_USB)
  19 #include <usb.h>
  20 #endif
  21 #else
  22 #include "mkimage.h"
  23 #endif
  24
  25 #include <command.h>
  26 #include <bootm.h>
  27 #include <image.h>
  28
  29 #ifndef CONFIG_SYS_BOOTM_LEN
  30 /* use 8MByte as default max gunzip size */
  31 #define CONFIG_SYS_BOOTM_LEN    0x800000
  32 #endif
  33
  34 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  35
  36 #ifndef USE_HOSTCC
  37
  38 DECLARE_GLOBAL_DATA_PTR;
  39
  40 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
  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 __weak void board_quiesce_devices(void)
  47 {
  48 }
  49
  50 #ifdef CONFIG_LMB
  51 static void boot_start_lmb(bootm_headers_t *images)
  52 {
  53         ulong           mem_start;
  54         phys_size_t     mem_size;
  55
  56         mem_start = env_get_bootm_low();
  57         mem_size = env_get_bootm_size();
  58
  59         lmb_init_and_reserve_range(&images->lmb, (phys_addr_t)mem_start,
  60                                    mem_size, NULL);
  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 = env_get_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         int ret;
  87
  88         /* get kernel image header, start address and length */
  89         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  90                         &images, &images.os.image_start, &images.os.image_len);
  91         if (images.os.image_len == 0) {
  92                 puts("ERROR: can't get kernel image!\n");
  93                 return 1;
  94         }
  95
  96         /* get image parameters */
  97         switch (genimg_get_format(os_hdr)) {
  98 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  99         case IMAGE_FORMAT_LEGACY:
 100                 images.os.type = image_get_type(os_hdr);
 101                 images.os.comp = image_get_comp(os_hdr);
 102                 images.os.os = image_get_os(os_hdr);
 103
 104                 images.os.end = image_get_image_end(os_hdr);
 105                 images.os.load = image_get_load(os_hdr);
 106                 images.os.arch = image_get_arch(os_hdr);
 107                 break;
 108 #endif
 109 #if IMAGE_ENABLE_FIT
 110         case IMAGE_FORMAT_FIT:
 111                 if (fit_image_get_type(images.fit_hdr_os,
 112                                        images.fit_noffset_os,
 113                                        &images.os.type)) {
 114                         puts("Can't get image type!\n");
 115                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 116                         return 1;
 117                 }
 118
 119                 if (fit_image_get_comp(images.fit_hdr_os,
 120                                        images.fit_noffset_os,
 121                                        &images.os.comp)) {
 122                         puts("Can't get image compression!\n");
 123                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 124                         return 1;
 125                 }
 126
 127                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 128                                      &images.os.os)) {
 129                         puts("Can't get image OS!\n");
 130                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 131                         return 1;
 132                 }
 133
 134                 if (fit_image_get_arch(images.fit_hdr_os,
 135                                        images.fit_noffset_os,
 136                                        &images.os.arch)) {
 137                         puts("Can't get image ARCH!\n");
 138                         return 1;
 139                 }
 140
 141                 images.os.end = fit_get_end(images.fit_hdr_os);
 142
 143                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 144                                        &images.os.load)) {
 145                         puts("Can't get image load address!\n");
 146                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 147                         return 1;
 148                 }
 149                 break;
 150 #endif
 151 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 152         case IMAGE_FORMAT_ANDROID:
 153                 images.os.type = IH_TYPE_KERNEL;
 154                 images.os.comp = android_image_get_kcomp(os_hdr);
 155                 images.os.os = IH_OS_LINUX;
 156
 157                 images.os.end = android_image_get_end(os_hdr);
 158                 images.os.load = android_image_get_kload(os_hdr);
 159                 images.ep = images.os.load;
 160                 ep_found = true;
 161                 break;
 162 #endif
 163         default:
 164                 puts("ERROR: unknown image format type!\n");
 165                 return 1;
 166         }
 167
 168         /* If we have a valid setup.bin, we will use that for entry (x86) */
 169         if (images.os.arch == IH_ARCH_I386 ||
 170             images.os.arch == IH_ARCH_X86_64) {
 171                 ulong len;
 172
 173                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 174                 if (ret < 0 && ret != -ENOENT) {
 175                         puts("Could not find a valid setup.bin for x86\n");
 176                         return 1;
 177                 }
 178                 /* Kernel entry point is the setup.bin */
 179         } else if (images.legacy_hdr_valid) {
 180                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 181 #if IMAGE_ENABLE_FIT
 182         } else if (images.fit_uname_os) {
 183                 int ret;
 184
 185                 ret = fit_image_get_entry(images.fit_hdr_os,
 186                                           images.fit_noffset_os, &images.ep);
 187                 if (ret) {
 188                         puts("Can't get entry point property!\n");
 189                         return 1;
 190                 }
 191 #endif
 192         } else if (!ep_found) {
 193                 puts("Could not find kernel entry point!\n");
 194                 return 1;
 195         }
 196
 197         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 198                 if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
 199                     images.os.arch == IH_ARCH_ARM64) {
 200                         ulong image_addr;
 201                         ulong image_size;
 202
 203                         ret = booti_setup(images.os.image_start, &image_addr,
 204                                           &image_size, true);
 205                         if (ret != 0)
 206                                 return 1;
 207
 208                         images.os.type = IH_TYPE_KERNEL;
 209                         images.os.load = image_addr;
 210                         images.ep = image_addr;
 211                 } else {
 212                         images.os.load = images.os.image_start;
 213                         images.ep += images.os.image_start;
 214                 }
 215         }
 216
 217         images.os.start = map_to_sysmem(os_hdr);
 218
 219         return 0;
 220 }
 221
 222 /**
 223  * bootm_find_images - wrapper to find and locate various images
 224  * @flag: Ignored Argument
 225  * @argc: command argument count
 226  * @argv: command argument list
 227  *
 228  * boot_find_images() will attempt to load an available ramdisk,
 229  * flattened device tree, as well as specifically marked
 230  * "loadable" images (loadables are FIT only)
 231  *
 232  * Note: bootm_find_images will skip an image if it is not found
 233  *
 234  * @return:
 235  *     0, if all existing images were loaded correctly
 236  *     1, if an image is found but corrupted, or invalid
 237  */
 238 int bootm_find_images(int flag, int argc, char * const argv[])
 239 {
 240         int ret;
 241
 242         /* find ramdisk */
 243         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 244                                &images.rd_start, &images.rd_end);
 245         if (ret) {
 246                 puts("Ramdisk image is corrupt or invalid\n");
 247                 return 1;
 248         }
 249
 250 #if IMAGE_ENABLE_OF_LIBFDT
 251         /* find flattened device tree */
 252         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 253                            &images.ft_addr, &images.ft_len);
 254         if (ret) {
 255                 puts("Could not find a valid device tree\n");
 256                 return 1;
 257         }
 258         if (CONFIG_IS_ENABLED(CMD_FDT))
 259                 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
 260 #endif
 261
 262 #if IMAGE_ENABLE_FIT
 263 #if defined(CONFIG_FPGA)
 264         /* find bitstreams */
 265         ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 266                             NULL, NULL);
 267         if (ret) {
 268                 printf("FPGA image is corrupted or invalid\n");
 269                 return 1;
 270         }
 271 #endif
 272
 273         /* find all of the loadables */
 274         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 275                                NULL, NULL);
 276         if (ret) {
 277                 printf("Loadable(s) is corrupt or invalid\n");
 278                 return 1;
 279         }
 280 #endif
 281
 282         return 0;
 283 }
 284
 285 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 286                             char * const argv[])
 287 {
 288         if (((images.os.type == IH_TYPE_KERNEL) ||
 289              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 290              (images.os.type == IH_TYPE_MULTI)) &&
 291             (images.os.os == IH_OS_LINUX ||
 292                  images.os.os == IH_OS_VXWORKS))
 293                 return bootm_find_images(flag, argc, argv);
 294
 295         return 0;
 296 }
 297 #endif /* USE_HOSTC */
 298
 299 #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
 300 /**
 301  * handle_decomp_error() - display a decompression error
 302  *
 303  * This function tries to produce a useful message. In the case where the
 304  * uncompressed size is the same as the available space, we can assume that
 305  * the image is too large for the buffer.
 306  *
 307  * @comp_type:          Compression type being used (IH_COMP_...)
 308  * @uncomp_size:        Number of bytes uncompressed
 309  * @ret:                errno error code received from compression library
 310  * @return Appropriate BOOTM_ERR_ error code
 311  */
 312 static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret)
 313 {
 314         const char *name = genimg_get_comp_name(comp_type);
 315
 316         /* ENOSYS means unimplemented compression type, don't reset. */
 317         if (ret == -ENOSYS)
 318                 return BOOTM_ERR_UNIMPLEMENTED;
 319
 320         if (uncomp_size >= CONFIG_SYS_BOOTM_LEN)
 321                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 322         else
 323                 printf("%s: uncompress error %d\n", name, ret);
 324
 325         /*
 326          * The decompression routines are now safe, so will not write beyond
 327          * their bounds. Probably it is not necessary to reset, but maintain
 328          * the current behaviour for now.
 329          */
 330         printf("Must RESET board to recover\n");
 331 #ifndef USE_HOSTCC
 332         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 333 #endif
 334
 335         return BOOTM_ERR_RESET;
 336 }
 337 #endif
 338
 339 #ifndef USE_HOSTCC
 340 static int bootm_load_os(bootm_headers_t *images, int boot_progress)
 341 {
 342         image_info_t os = images->os;
 343         ulong load = os.load;
 344         ulong load_end;
 345         ulong blob_start = os.start;
 346         ulong blob_end = os.end;
 347         ulong image_start = os.image_start;
 348         ulong image_len = os.image_len;
 349         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 350         bool no_overlap;
 351         void *load_buf, *image_buf;
 352         int err;
 353
 354         load_buf = map_sysmem(load, 0);
 355         image_buf = map_sysmem(os.image_start, image_len);
 356         err = image_decomp(os.comp, load, os.image_start, os.type,
 357                            load_buf, image_buf, image_len,
 358                            CONFIG_SYS_BOOTM_LEN, &load_end);
 359         if (err) {
 360                 err = handle_decomp_error(os.comp, load_end - load, err);
 361                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 362                 return err;
 363         }
 364
 365         flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
 366
 367         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 368         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 369
 370         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 371
 372         if (!no_overlap && load < blob_end && load_end > blob_start) {
 373                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 374                       blob_start, blob_end);
 375                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 376                       load_end);
 377
 378                 /* Check what type of image this is. */
 379                 if (images->legacy_hdr_valid) {
 380                         if (image_get_type(&images->legacy_hdr_os_copy)
 381                                         == IH_TYPE_MULTI)
 382                                 puts("WARNING: legacy format multi component image overwritten\n");
 383                         return BOOTM_ERR_OVERLAP;
 384                 } else {
 385                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 386                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 387                         return BOOTM_ERR_RESET;
 388                 }
 389         }
 390
 391         lmb_reserve(&images->lmb, images->os.load, (load_end -
 392                                                     images->os.load));
 393         return 0;
 394 }
 395
 396 /**
 397  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 398  *
 399  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 400  *      enabled)
 401  */
 402 ulong bootm_disable_interrupts(void)
 403 {
 404         ulong iflag;
 405
 406         /*
 407          * We have reached the point of no return: we are going to
 408          * overwrite all exception vector code, so we cannot easily
 409          * recover from any failures any more...
 410          */
 411         iflag = disable_interrupts();
 412 #ifdef CONFIG_NETCONSOLE
 413         /* Stop the ethernet stack if NetConsole could have left it up */
 414         eth_halt();
 415 # ifndef CONFIG_DM_ETH
 416         eth_unregister(eth_get_dev());
 417 # endif
 418 #endif
 419
 420 #if defined(CONFIG_CMD_USB)
 421         /*
 422          * turn off USB to prevent the host controller from writing to the
 423          * SDRAM while Linux is booting. This could happen (at least for OHCI
 424          * controller), because the HCCA (Host Controller Communication Area)
 425          * lies within the SDRAM and the host controller writes continously to
 426          * this area (as busmaster!). The HccaFrameNumber is for example
 427          * updated every 1 ms within the HCCA structure in SDRAM! For more
 428          * details see the OpenHCI specification.
 429          */
 430         usb_stop();
 431 #endif
 432         return iflag;
 433 }
 434
 435 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 436
 437 #define CONSOLE_ARG     "console="
 438 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 439
 440 static void fixup_silent_linux(void)
 441 {
 442         char *buf;
 443         const char *env_val;
 444         char *cmdline = env_get("bootargs");
 445         int want_silent;
 446
 447         /*
 448          * Only fix cmdline when requested. The environment variable can be:
 449          *
 450          *      no - we never fixup
 451          *      yes - we always fixup
 452          *      unset - we rely on the console silent flag
 453          */
 454         want_silent = env_get_yesno("silent_linux");
 455         if (want_silent == 0)
 456                 return;
 457         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 458                 return;
 459
 460         debug("before silent fix-up: %s\n", cmdline);
 461         if (cmdline && (cmdline[0] != '\0')) {
 462                 char *start = strstr(cmdline, CONSOLE_ARG);
 463
 464                 /* Allocate space for maximum possible new command line */
 465                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 466                 if (!buf) {
 467                         debug("%s: out of memory\n", __func__);
 468                         return;
 469                 }
 470
 471                 if (start) {
 472                         char *end = strchr(start, ' ');
 473                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 474
 475                         strncpy(buf, cmdline, num_start_bytes);
 476                         if (end)
 477                                 strcpy(buf + num_start_bytes, end);
 478                         else
 479                                 buf[num_start_bytes] = '\0';
 480                 } else {
 481                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 482                 }
 483                 env_val = buf;
 484         } else {
 485                 buf = NULL;
 486                 env_val = CONSOLE_ARG;
 487         }
 488
 489         env_set("bootargs", env_val);
 490         debug("after silent fix-up: %s\n", env_val);
 491         free(buf);
 492 }
 493 #endif /* CONFIG_SILENT_CONSOLE */
 494
 495 /**
 496  * Execute selected states of the bootm command.
 497  *
 498  * Note the arguments to this state must be the first argument, Any 'bootm'
 499  * or sub-command arguments must have already been taken.
 500  *
 501  * Note that if states contains more than one flag it MUST contain
 502  * BOOTM_STATE_START, since this handles and consumes the command line args.
 503  *
 504  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 505  * functions we store the return value of in 'ret' may use a negative return
 506  * value, without special handling.
 507  *
 508  * @param cmdtp         Pointer to bootm command table entry
 509  * @param flag          Command flags (CMD_FLAG_...)
 510  * @param argc          Number of subcommand arguments (0 = no arguments)
 511  * @param argv          Arguments
 512  * @param states        Mask containing states to run (BOOTM_STATE_...)
 513  * @param images        Image header information
 514  * @param boot_progress 1 to show boot progress, 0 to not do this
 515  * @return 0 if ok, something else on error. Some errors will cause this
 516  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 517  *      then the intent is to boot an OS, so this function will not return
 518  *      unless the image type is standalone.
 519  */
 520 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 521                     int states, bootm_headers_t *images, int boot_progress)
 522 {
 523         boot_os_fn *boot_fn;
 524         ulong iflag = 0;
 525         int ret = 0, need_boot_fn;
 526
 527         images->state |= states;
 528
 529         /*
 530          * Work through the states and see how far we get. We stop on
 531          * any error.
 532          */
 533         if (states & BOOTM_STATE_START)
 534                 ret = bootm_start(cmdtp, flag, argc, argv);
 535
 536         if (!ret && (states & BOOTM_STATE_FINDOS))
 537                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 538
 539         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 540                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 541
 542         /* Load the OS */
 543         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 544                 iflag = bootm_disable_interrupts();
 545                 ret = bootm_load_os(images, 0);
 546                 if (ret && ret != BOOTM_ERR_OVERLAP)
 547                         goto err;
 548                 else if (ret == BOOTM_ERR_OVERLAP)
 549                         ret = 0;
 550         }
 551
 552         /* Relocate the ramdisk */
 553 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 554         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 555                 ulong rd_len = images->rd_end - images->rd_start;
 556
 557                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 558                         rd_len, &images->initrd_start, &images->initrd_end);
 559                 if (!ret) {
 560                         env_set_hex("initrd_start", images->initrd_start);
 561                         env_set_hex("initrd_end", images->initrd_end);
 562                 }
 563         }
 564 #endif
 565 #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
 566         if (!ret && (states & BOOTM_STATE_FDT)) {
 567                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 568                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 569                                         &images->ft_len);
 570         }
 571 #endif
 572
 573         /* From now on, we need the OS boot function */
 574         if (ret)
 575                 return ret;
 576         boot_fn = bootm_os_get_boot_func(images->os.os);
 577         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 578                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 579                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 580         if (boot_fn == NULL && need_boot_fn) {
 581                 if (iflag)
 582                         enable_interrupts();
 583                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 584                        genimg_get_os_name(images->os.os), images->os.os);
 585                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 586                 return 1;
 587         }
 588
 589
 590         /* Call various other states that are not generally used */
 591         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 592                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 593         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 594                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 595         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 596 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 597                 if (images->os.os == IH_OS_LINUX)
 598                         fixup_silent_linux();
 599 #endif
 600                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 601         }
 602
 603 #ifdef CONFIG_TRACE
 604         /* Pretend to run the OS, then run a user command */
 605         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 606                 char *cmd_list = env_get("fakegocmd");
 607
 608                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 609                                 images, boot_fn);
 610                 if (!ret && cmd_list)
 611                         ret = run_command_list(cmd_list, -1, flag);
 612         }
 613 #endif
 614
 615         /* Check for unsupported subcommand. */
 616         if (ret) {
 617                 puts("subcommand not supported\n");
 618                 return ret;
 619         }
 620
 621         /* Now run the OS! We hope this doesn't return */
 622         if (!ret && (states & BOOTM_STATE_OS_GO))
 623                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 624                                 images, boot_fn);
 625
 626         /* Deal with any fallout */
 627 err:
 628         if (iflag)
 629                 enable_interrupts();
 630
 631         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 632                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 633         else if (ret == BOOTM_ERR_RESET)
 634                 do_reset(cmdtp, flag, argc, argv);
 635
 636         return ret;
 637 }
 638
 639 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 640 /**
 641  * image_get_kernel - verify legacy format kernel image
 642  * @img_addr: in RAM address of the legacy format image to be verified
 643  * @verify: data CRC verification flag
 644  *
 645  * image_get_kernel() verifies legacy image integrity and returns pointer to
 646  * legacy image header if image verification was completed successfully.
 647  *
 648  * returns:
 649  *     pointer to a legacy image header if valid image was found
 650  *     otherwise return NULL
 651  */
 652 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 653 {
 654         image_header_t *hdr = (image_header_t *)img_addr;
 655
 656         if (!image_check_magic(hdr)) {
 657                 puts("Bad Magic Number\n");
 658                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 659                 return NULL;
 660         }
 661         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 662
 663         if (!image_check_hcrc(hdr)) {
 664                 puts("Bad Header Checksum\n");
 665                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 666                 return NULL;
 667         }
 668
 669         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 670         image_print_contents(hdr);
 671
 672         if (verify) {
 673                 puts("   Verifying Checksum ... ");
 674                 if (!image_check_dcrc(hdr)) {
 675                         printf("Bad Data CRC\n");
 676                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 677                         return NULL;
 678                 }
 679                 puts("OK\n");
 680         }
 681         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 682
 683         if (!image_check_target_arch(hdr)) {
 684                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 685                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 686                 return NULL;
 687         }
 688         return hdr;
 689 }
 690 #endif
 691
 692 /**
 693  * boot_get_kernel - find kernel image
 694  * @os_data: pointer to a ulong variable, will hold os data start address
 695  * @os_len: pointer to a ulong variable, will hold os data length
 696  *
 697  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 698  * and locates kernel data.
 699  *
 700  * returns:
 701  *     pointer to image header if valid image was found, plus kernel start
 702  *     address and length, otherwise NULL
 703  */
 704 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 705                                    char * const argv[], bootm_headers_t *images,
 706                                    ulong *os_data, ulong *os_len)
 707 {
 708 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 709         image_header_t  *hdr;
 710 #endif
 711         ulong           img_addr;
 712         const void *buf;
 713         const char      *fit_uname_config = NULL;
 714         const char      *fit_uname_kernel = NULL;
 715 #if IMAGE_ENABLE_FIT
 716         int             os_noffset;
 717 #endif
 718
 719         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 720                                               &fit_uname_config,
 721                                               &fit_uname_kernel);
 722
 723         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 724
 725         /* check image type, for FIT images get FIT kernel node */
 726         *os_data = *os_len = 0;
 727         buf = map_sysmem(img_addr, 0);
 728         switch (genimg_get_format(buf)) {
 729 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 730         case IMAGE_FORMAT_LEGACY:
 731                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 732                        img_addr);
 733                 hdr = image_get_kernel(img_addr, images->verify);
 734                 if (!hdr)
 735                         return NULL;
 736                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 737
 738                 /* get os_data and os_len */
 739                 switch (image_get_type(hdr)) {
 740                 case IH_TYPE_KERNEL:
 741                 case IH_TYPE_KERNEL_NOLOAD:
 742                         *os_data = image_get_data(hdr);
 743                         *os_len = image_get_data_size(hdr);
 744                         break;
 745                 case IH_TYPE_MULTI:
 746                         image_multi_getimg(hdr, 0, os_data, os_len);
 747                         break;
 748                 case IH_TYPE_STANDALONE:
 749                         *os_data = image_get_data(hdr);
 750                         *os_len = image_get_data_size(hdr);
 751                         break;
 752                 default:
 753                         printf("Wrong Image Type for %s command\n",
 754                                cmdtp->name);
 755                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 756                         return NULL;
 757                 }
 758
 759                 /*
 760                  * copy image header to allow for image overwrites during
 761                  * kernel decompression.
 762                  */
 763                 memmove(&images->legacy_hdr_os_copy, hdr,
 764                         sizeof(image_header_t));
 765
 766                 /* save pointer to image header */
 767                 images->legacy_hdr_os = hdr;
 768
 769                 images->legacy_hdr_valid = 1;
 770                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 771                 break;
 772 #endif
 773 #if IMAGE_ENABLE_FIT
 774         case IMAGE_FORMAT_FIT:
 775                 os_noffset = fit_image_load(images, img_addr,
 776                                 &fit_uname_kernel, &fit_uname_config,
 777                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 778                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 779                                 FIT_LOAD_IGNORED, os_data, os_len);
 780                 if (os_noffset < 0)
 781                         return NULL;
 782
 783                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 784                 images->fit_uname_os = fit_uname_kernel;
 785                 images->fit_uname_cfg = fit_uname_config;
 786                 images->fit_noffset_os = os_noffset;
 787                 break;
 788 #endif
 789 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 790         case IMAGE_FORMAT_ANDROID:
 791                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 792                 if (android_image_get_kernel(buf, images->verify,
 793                                              os_data, os_len))
 794                         return NULL;
 795                 break;
 796 #endif
 797         default:
 798                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 799                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 800                 return NULL;
 801         }
 802
 803         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 804               *os_data, *os_len, *os_len);
 805
 806         return buf;
 807 }
 808
 809 /**
 810  * switch_to_non_secure_mode() - switch to non-secure mode
 811  *
 812  * This routine is overridden by architectures requiring this feature.
 813  */
 814 void __weak switch_to_non_secure_mode(void)
 815 {
 816 }
 817
 818 #else /* USE_HOSTCC */
 819
 820 #if defined(CONFIG_FIT_SIGNATURE)
 821 static int bootm_host_load_image(const void *fit, int req_image_type)
 822 {
 823         const char *fit_uname_config = NULL;
 824         ulong data, len;
 825         bootm_headers_t images;
 826         int noffset;
 827         ulong load_end;
 828         uint8_t image_type;
 829         uint8_t imape_comp;
 830         void *load_buf;
 831         int ret;
 832
 833         memset(&images, '\0', sizeof(images));
 834         images.verify = 1;
 835         noffset = fit_image_load(&images, (ulong)fit,
 836                 NULL, &fit_uname_config,
 837                 IH_ARCH_DEFAULT, req_image_type, -1,
 838                 FIT_LOAD_IGNORED, &data, &len);
 839         if (noffset < 0)
 840                 return noffset;
 841         if (fit_image_get_type(fit, noffset, &image_type)) {
 842                 puts("Can't get image type!\n");
 843                 return -EINVAL;
 844         }
 845
 846         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 847                 puts("Can't get image compression!\n");
 848                 return -EINVAL;
 849         }
 850
 851         /* Allow the image to expand by a factor of 4, should be safe */
 852         load_buf = malloc((1 << 20) + len * 4);
 853         ret = image_decomp(imape_comp, 0, data, image_type, load_buf,
 854                            (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 855                            &load_end);
 856         free(load_buf);
 857
 858         if (ret) {
 859                 ret = handle_decomp_error(imape_comp, load_end - 0, ret);
 860                 if (ret != BOOTM_ERR_UNIMPLEMENTED)
 861                         return ret;
 862         }
 863
 864         return 0;
 865 }
 866
 867 int bootm_host_load_images(const void *fit, int cfg_noffset)
 868 {
 869         static uint8_t image_types[] = {
 870                 IH_TYPE_KERNEL,
 871                 IH_TYPE_FLATDT,
 872                 IH_TYPE_RAMDISK,
 873         };
 874         int err = 0;
 875         int i;
 876
 877         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 878                 int ret;
 879
 880                 ret = bootm_host_load_image(fit, image_types[i]);
 881                 if (!err && ret && ret != -ENOENT)
 882                         err = ret;
 883         }
 884
 885         /* Return the first error we found */
 886         return err;
 887 }
 888 #endif
 889
 890 #endif /* ndef USE_HOSTCC */