common/bootm.c

   1 /*
   2  * (C) Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef USE_HOSTCC
   9 #include <common.h>
  10 #include <bootstage.h>
  11 #include <bzlib.h>
  12 #include <errno.h>
  13 #include <fdt_support.h>
  14 #include <lmb.h>
  15 #include <malloc.h>
  16 #include <asm/io.h>
  17 #include <linux/lzo.h>
  18 #include <lzma/LzmaTypes.h>
  19 #include <lzma/LzmaDec.h>
  20 #include <lzma/LzmaTools.h>
  21 #if defined(CONFIG_CMD_USB)
  22 #include <usb.h>
  23 #endif
  24 #else
  25 #include "mkimage.h"
  26 #endif
  27
  28 #include <command.h>
  29 #include <bootm.h>
  30 #include <image.h>
  31
  32 #ifndef CONFIG_SYS_BOOTM_LEN
  33 /* use 8MByte as default max gunzip size */
  34 #define CONFIG_SYS_BOOTM_LEN    0x800000
  35 #endif
  36
  37 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  38
  39 #ifndef USE_HOSTCC
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  44                                    char * const argv[], bootm_headers_t *images,
  45                                    ulong *os_data, ulong *os_len);
  46
  47 #ifdef CONFIG_LMB
  48 static void boot_start_lmb(bootm_headers_t *images)
  49 {
  50         ulong           mem_start;
  51         phys_size_t     mem_size;
  52
  53         lmb_init(&images->lmb);
  54
  55         mem_start = getenv_bootm_low();
  56         mem_size = getenv_bootm_size();
  57
  58         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
  59
  60         arch_lmb_reserve(&images->lmb);
  61         board_lmb_reserve(&images->lmb);
  62 }
  63 #else
  64 #define lmb_reserve(lmb, base, size)
  65 static inline void boot_start_lmb(bootm_headers_t *images) { }
  66 #endif
  67
  68 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc,
  69                        char * const argv[])
  70 {
  71         memset((void *)&images, 0, sizeof(images));
  72         images.verify = getenv_yesno("verify");
  73
  74         boot_start_lmb(&images);
  75
  76         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  77         images.state = BOOTM_STATE_START;
  78
  79         return 0;
  80 }
  81
  82 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
  83                          char * const argv[])
  84 {
  85         const void *os_hdr;
  86         bool ep_found = false;
  87         int ret;
  88
  89         /* get kernel image header, start address and length */
  90         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  91                         &images, &images.os.image_start, &images.os.image_len);
  92         if (images.os.image_len == 0) {
  93                 puts("ERROR: can't get kernel image!\n");
  94                 return 1;
  95         }
  96
  97         /* get image parameters */
  98         switch (genimg_get_format(os_hdr)) {
  99 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 100         case IMAGE_FORMAT_LEGACY:
 101                 images.os.type = image_get_type(os_hdr);
 102                 images.os.comp = image_get_comp(os_hdr);
 103                 images.os.os = image_get_os(os_hdr);
 104
 105                 images.os.end = image_get_image_end(os_hdr);
 106                 images.os.load = image_get_load(os_hdr);
 107                 images.os.arch = image_get_arch(os_hdr);
 108                 break;
 109 #endif
 110 #if defined(CONFIG_FIT)
 111         case IMAGE_FORMAT_FIT:
 112                 if (fit_image_get_type(images.fit_hdr_os,
 113                                        images.fit_noffset_os,
 114                                        &images.os.type)) {
 115                         puts("Can't get image type!\n");
 116                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 117                         return 1;
 118                 }
 119
 120                 if (fit_image_get_comp(images.fit_hdr_os,
 121                                        images.fit_noffset_os,
 122                                        &images.os.comp)) {
 123                         puts("Can't get image compression!\n");
 124                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 125                         return 1;
 126                 }
 127
 128                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 129                                      &images.os.os)) {
 130                         puts("Can't get image OS!\n");
 131                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 132                         return 1;
 133                 }
 134
 135                 if (fit_image_get_arch(images.fit_hdr_os,
 136                                        images.fit_noffset_os,
 137                                        &images.os.arch)) {
 138                         puts("Can't get image ARCH!\n");
 139                         return 1;
 140                 }
 141
 142                 images.os.end = fit_get_end(images.fit_hdr_os);
 143
 144                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 145                                        &images.os.load)) {
 146                         puts("Can't get image load address!\n");
 147                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 148                         return 1;
 149                 }
 150                 break;
 151 #endif
 152 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 153         case IMAGE_FORMAT_ANDROID:
 154                 images.os.type = IH_TYPE_KERNEL;
 155                 images.os.comp = IH_COMP_NONE;
 156                 images.os.os = IH_OS_LINUX;
 157
 158                 images.os.end = android_image_get_end(os_hdr);
 159                 images.os.load = android_image_get_kload(os_hdr);
 160                 images.ep = images.os.load;
 161                 ep_found = true;
 162                 break;
 163 #endif
 164         default:
 165                 puts("ERROR: unknown image format type!\n");
 166                 return 1;
 167         }
 168
 169         /* If we have a valid setup.bin, we will use that for entry (x86) */
 170         if (images.os.arch == IH_ARCH_I386 ||
 171             images.os.arch == IH_ARCH_X86_64) {
 172                 ulong len;
 173
 174                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 175                 if (ret < 0 && ret != -ENOENT) {
 176                         puts("Could not find a valid setup.bin for x86\n");
 177                         return 1;
 178                 }
 179                 /* Kernel entry point is the setup.bin */
 180         } else if (images.legacy_hdr_valid) {
 181                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 182 #if defined(CONFIG_FIT)
 183         } else if (images.fit_uname_os) {
 184                 int ret;
 185
 186                 ret = fit_image_get_entry(images.fit_hdr_os,
 187                                           images.fit_noffset_os, &images.ep);
 188                 if (ret) {
 189                         puts("Can't get entry point property!\n");
 190                         return 1;
 191                 }
 192 #endif
 193         } else if (!ep_found) {
 194                 puts("Could not find kernel entry point!\n");
 195                 return 1;
 196         }
 197
 198         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 199                 images.os.load = images.os.image_start;
 200                 images.ep += images.os.load;
 201         }
 202
 203         images.os.start = (ulong)os_hdr;
 204
 205         return 0;
 206 }
 207
 208 static int bootm_find_ramdisk(int flag, int argc, char * const argv[])
 209 {
 210         int ret;
 211
 212         /* find ramdisk */
 213         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 214                                &images.rd_start, &images.rd_end);
 215         if (ret) {
 216                 puts("Ramdisk image is corrupt or invalid\n");
 217                 return 1;
 218         }
 219
 220         return 0;
 221 }
 222
 223 #if defined(CONFIG_OF_LIBFDT)
 224 static int bootm_find_fdt(int flag, int argc, char * const argv[])
 225 {
 226         int ret;
 227
 228         /* find flattened device tree */
 229         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 230                            &images.ft_addr, &images.ft_len);
 231         if (ret) {
 232                 puts("Could not find a valid device tree\n");
 233                 return 1;
 234         }
 235
 236         set_working_fdt_addr((ulong)images.ft_addr);
 237
 238         return 0;
 239 }
 240 #endif
 241
 242 int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[])
 243 {
 244         if (bootm_find_ramdisk(flag, argc, argv))
 245                 return 1;
 246
 247 #if defined(CONFIG_OF_LIBFDT)
 248         if (bootm_find_fdt(flag, argc, argv))
 249                 return 1;
 250 #endif
 251
 252         return 0;
 253 }
 254
 255 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 256                             char * const argv[])
 257 {
 258         if (((images.os.type == IH_TYPE_KERNEL) ||
 259              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 260              (images.os.type == IH_TYPE_MULTI)) &&
 261             (images.os.os == IH_OS_LINUX ||
 262                  images.os.os == IH_OS_VXWORKS))
 263                 return bootm_find_ramdisk_fdt(flag, argc, argv);
 264
 265         return 0;
 266 }
 267 #endif /* USE_HOSTC */
 268
 269 /**
 270  * print_decomp_msg() - Print a suitable decompression/loading message
 271  *
 272  * @type:       OS type (IH_OS_...)
 273  * @comp_type:  Compression type being used (IH_COMP_...)
 274  * @is_xip:     true if the load address matches the image start
 275  */
 276 static void print_decomp_msg(int comp_type, int type, bool is_xip)
 277 {
 278         const char *name = genimg_get_type_name(type);
 279
 280         if (comp_type == IH_COMP_NONE)
 281                 printf("   %s %s ... ", is_xip ? "XIP" : "Loading", name);
 282         else
 283                 printf("   Uncompressing %s ... ", name);
 284 }
 285
 286 /**
 287  * handle_decomp_error() - display a decompression error
 288  *
 289  * This function tries to produce a useful message. In the case where the
 290  * uncompressed size is the same as the available space, we can assume that
 291  * the image is too large for the buffer.
 292  *
 293  * @comp_type:          Compression type being used (IH_COMP_...)
 294  * @uncomp_size:        Number of bytes uncompressed
 295  * @unc_len:            Amount of space available for decompression
 296  * @ret:                Error code to report
 297  * @return BOOTM_ERR_RESET, indicating that the board must be reset
 298  */
 299 static int handle_decomp_error(int comp_type, size_t uncomp_size,
 300                                size_t unc_len, int ret)
 301 {
 302         const char *name = genimg_get_comp_name(comp_type);
 303
 304         if (uncomp_size >= unc_len)
 305                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 306         else
 307                 printf("%s: uncompress error %d\n", name, ret);
 308
 309         /*
 310          * The decompression routines are now safe, so will not write beyond
 311          * their bounds. Probably it is not necessary to reset, but maintain
 312          * the current behaviour for now.
 313          */
 314         printf("Must RESET board to recover\n");
 315 #ifndef USE_HOSTCC
 316         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 317 #endif
 318
 319         return BOOTM_ERR_RESET;
 320 }
 321
 322 int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
 323                        void *load_buf, void *image_buf, ulong image_len,
 324                        uint unc_len, ulong *load_end)
 325 {
 326         int ret = 0;
 327
 328         *load_end = load;
 329         print_decomp_msg(comp, type, load == image_start);
 330
 331         /*
 332          * Load the image to the right place, decompressing if needed. After
 333          * this, image_len will be set to the number of uncompressed bytes
 334          * loaded, ret will be non-zero on error.
 335          */
 336         switch (comp) {
 337         case IH_COMP_NONE:
 338                 if (load == image_start)
 339                         break;
 340                 if (image_len <= unc_len)
 341                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 342                 else
 343                         ret = 1;
 344                 break;
 345 #ifdef CONFIG_GZIP
 346         case IH_COMP_GZIP: {
 347                 ret = gunzip(load_buf, unc_len, image_buf, &image_len);
 348                 break;
 349         }
 350 #endif /* CONFIG_GZIP */
 351 #ifdef CONFIG_BZIP2
 352         case IH_COMP_BZIP2: {
 353                 uint size = unc_len;
 354
 355                 /*
 356                  * If we've got less than 4 MB of malloc() space,
 357                  * use slower decompression algorithm which requires
 358                  * at most 2300 KB of memory.
 359                  */
 360                 ret = BZ2_bzBuffToBuffDecompress(load_buf, &size,
 361                         image_buf, image_len,
 362                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 363                 image_len = size;
 364                 break;
 365         }
 366 #endif /* CONFIG_BZIP2 */
 367 #ifdef CONFIG_LZMA
 368         case IH_COMP_LZMA: {
 369                 SizeT lzma_len = unc_len;
 370
 371                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 372                                                image_buf, image_len);
 373                 image_len = lzma_len;
 374                 break;
 375         }
 376 #endif /* CONFIG_LZMA */
 377 #ifdef CONFIG_LZO
 378         case IH_COMP_LZO: {
 379                 size_t size = unc_len;
 380
 381                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 382                 image_len = size;
 383                 break;
 384         }
 385 #endif /* CONFIG_LZO */
 386         default:
 387                 printf("Unimplemented compression type %d\n", comp);
 388                 return BOOTM_ERR_UNIMPLEMENTED;
 389         }
 390
 391         if (ret)
 392                 return handle_decomp_error(comp, image_len, unc_len, ret);
 393         *load_end = load + image_len;
 394
 395         puts("OK\n");
 396
 397         return 0;
 398 }
 399
 400 #ifndef USE_HOSTCC
 401 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
 402                          int boot_progress)
 403 {
 404         image_info_t os = images->os;
 405         ulong load = os.load;
 406         ulong blob_start = os.start;
 407         ulong blob_end = os.end;
 408         ulong image_start = os.image_start;
 409         ulong image_len = os.image_len;
 410         bool no_overlap;
 411         void *load_buf, *image_buf;
 412         int err;
 413
 414         load_buf = map_sysmem(load, 0);
 415         image_buf = map_sysmem(os.image_start, image_len);
 416         err = bootm_decomp_image(os.comp, load, os.image_start, os.type,
 417                                  load_buf, image_buf, image_len,
 418                                  CONFIG_SYS_BOOTM_LEN, load_end);
 419         if (err) {
 420                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 421                 return err;
 422         }
 423         flush_cache(load, (*load_end - load) * sizeof(ulong));
 424
 425         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 426         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 427
 428         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 429
 430         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
 431                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 432                       blob_start, blob_end);
 433                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 434                       *load_end);
 435
 436                 /* Check what type of image this is. */
 437                 if (images->legacy_hdr_valid) {
 438                         if (image_get_type(&images->legacy_hdr_os_copy)
 439                                         == IH_TYPE_MULTI)
 440                                 puts("WARNING: legacy format multi component image overwritten\n");
 441                         return BOOTM_ERR_OVERLAP;
 442                 } else {
 443                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 444                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 445                         return BOOTM_ERR_RESET;
 446                 }
 447         }
 448
 449         return 0;
 450 }
 451
 452 /**
 453  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 454  *
 455  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 456  *      enabled)
 457  */
 458 ulong bootm_disable_interrupts(void)
 459 {
 460         ulong iflag;
 461
 462         /*
 463          * We have reached the point of no return: we are going to
 464          * overwrite all exception vector code, so we cannot easily
 465          * recover from any failures any more...
 466          */
 467         iflag = disable_interrupts();
 468 #ifdef CONFIG_NETCONSOLE
 469         /* Stop the ethernet stack if NetConsole could have left it up */
 470         eth_halt();
 471         eth_unregister(eth_get_dev());
 472 #endif
 473
 474 #if defined(CONFIG_CMD_USB)
 475         /*
 476          * turn off USB to prevent the host controller from writing to the
 477          * SDRAM while Linux is booting. This could happen (at least for OHCI
 478          * controller), because the HCCA (Host Controller Communication Area)
 479          * lies within the SDRAM and the host controller writes continously to
 480          * this area (as busmaster!). The HccaFrameNumber is for example
 481          * updated every 1 ms within the HCCA structure in SDRAM! For more
 482          * details see the OpenHCI specification.
 483          */
 484         usb_stop();
 485 #endif
 486         return iflag;
 487 }
 488
 489 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 490
 491 #define CONSOLE_ARG     "console="
 492 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
 493
 494 static void fixup_silent_linux(void)
 495 {
 496         char *buf;
 497         const char *env_val;
 498         char *cmdline = getenv("bootargs");
 499         int want_silent;
 500
 501         /*
 502          * Only fix cmdline when requested. The environment variable can be:
 503          *
 504          *      no - we never fixup
 505          *      yes - we always fixup
 506          *      unset - we rely on the console silent flag
 507          */
 508         want_silent = getenv_yesno("silent_linux");
 509         if (want_silent == 0)
 510                 return;
 511         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 512                 return;
 513
 514         debug("before silent fix-up: %s\n", cmdline);
 515         if (cmdline && (cmdline[0] != '\0')) {
 516                 char *start = strstr(cmdline, CONSOLE_ARG);
 517
 518                 /* Allocate space for maximum possible new command line */
 519                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
 520                 if (!buf) {
 521                         debug("%s: out of memory\n", __func__);
 522                         return;
 523                 }
 524
 525                 if (start) {
 526                         char *end = strchr(start, ' ');
 527                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
 528
 529                         strncpy(buf, cmdline, num_start_bytes);
 530                         if (end)
 531                                 strcpy(buf + num_start_bytes, end);
 532                         else
 533                                 buf[num_start_bytes] = '\0';
 534                 } else {
 535                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
 536                 }
 537                 env_val = buf;
 538         } else {
 539                 buf = NULL;
 540                 env_val = CONSOLE_ARG;
 541         }
 542
 543         setenv("bootargs", env_val);
 544         debug("after silent fix-up: %s\n", env_val);
 545         free(buf);
 546 }
 547 #endif /* CONFIG_SILENT_CONSOLE */
 548
 549 /**
 550  * Execute selected states of the bootm command.
 551  *
 552  * Note the arguments to this state must be the first argument, Any 'bootm'
 553  * or sub-command arguments must have already been taken.
 554  *
 555  * Note that if states contains more than one flag it MUST contain
 556  * BOOTM_STATE_START, since this handles and consumes the command line args.
 557  *
 558  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 559  * functions we store the return value of in 'ret' may use a negative return
 560  * value, without special handling.
 561  *
 562  * @param cmdtp         Pointer to bootm command table entry
 563  * @param flag          Command flags (CMD_FLAG_...)
 564  * @param argc          Number of subcommand arguments (0 = no arguments)
 565  * @param argv          Arguments
 566  * @param states        Mask containing states to run (BOOTM_STATE_...)
 567  * @param images        Image header information
 568  * @param boot_progress 1 to show boot progress, 0 to not do this
 569  * @return 0 if ok, something else on error. Some errors will cause this
 570  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 571  *      then the intent is to boot an OS, so this function will not return
 572  *      unless the image type is standalone.
 573  */
 574 int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 575                     int states, bootm_headers_t *images, int boot_progress)
 576 {
 577         boot_os_fn *boot_fn;
 578         ulong iflag = 0;
 579         int ret = 0, need_boot_fn;
 580
 581         images->state |= states;
 582
 583         /*
 584          * Work through the states and see how far we get. We stop on
 585          * any error.
 586          */
 587         if (states & BOOTM_STATE_START)
 588                 ret = bootm_start(cmdtp, flag, argc, argv);
 589
 590         if (!ret && (states & BOOTM_STATE_FINDOS))
 591                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 592
 593         if (!ret && (states & BOOTM_STATE_FINDOTHER)) {
 594                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 595                 argc = 0;       /* consume the args */
 596         }
 597
 598         /* Load the OS */
 599         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 600                 ulong load_end;
 601
 602                 iflag = bootm_disable_interrupts();
 603                 ret = bootm_load_os(images, &load_end, 0);
 604                 if (ret == 0)
 605                         lmb_reserve(&images->lmb, images->os.load,
 606                                     (load_end - images->os.load));
 607                 else if (ret && ret != BOOTM_ERR_OVERLAP)
 608                         goto err;
 609                 else if (ret == BOOTM_ERR_OVERLAP)
 610                         ret = 0;
 611 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 612                 if (images->os.os == IH_OS_LINUX)
 613                         fixup_silent_linux();
 614 #endif
 615         }
 616
 617         /* Relocate the ramdisk */
 618 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 619         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 620                 ulong rd_len = images->rd_end - images->rd_start;
 621
 622                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 623                         rd_len, &images->initrd_start, &images->initrd_end);
 624                 if (!ret) {
 625                         setenv_hex("initrd_start", images->initrd_start);
 626                         setenv_hex("initrd_end", images->initrd_end);
 627                 }
 628         }
 629 #endif
 630 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
 631         if (!ret && (states & BOOTM_STATE_FDT)) {
 632                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 633                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 634                                         &images->ft_len);
 635         }
 636 #endif
 637
 638         /* From now on, we need the OS boot function */
 639         if (ret)
 640                 return ret;
 641         boot_fn = bootm_os_get_boot_func(images->os.os);
 642         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 643                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 644                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 645         if (boot_fn == NULL && need_boot_fn) {
 646                 if (iflag)
 647                         enable_interrupts();
 648                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 649                        genimg_get_os_name(images->os.os), images->os.os);
 650                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 651                 return 1;
 652         }
 653
 654         /* Call various other states that are not generally used */
 655         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 656                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 657         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 658                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 659         if (!ret && (states & BOOTM_STATE_OS_PREP))
 660                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 661
 662 #ifdef CONFIG_TRACE
 663         /* Pretend to run the OS, then run a user command */
 664         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 665                 char *cmd_list = getenv("fakegocmd");
 666
 667                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 668                                 images, boot_fn);
 669                 if (!ret && cmd_list)
 670                         ret = run_command_list(cmd_list, -1, flag);
 671         }
 672 #endif
 673
 674         /* Check for unsupported subcommand. */
 675         if (ret) {
 676                 puts("subcommand not supported\n");
 677                 return ret;
 678         }
 679
 680         /* Now run the OS! We hope this doesn't return */
 681         if (!ret && (states & BOOTM_STATE_OS_GO))
 682                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 683                                 images, boot_fn);
 684
 685         /* Deal with any fallout */
 686 err:
 687         if (iflag)
 688                 enable_interrupts();
 689
 690         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 691                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 692         else if (ret == BOOTM_ERR_RESET)
 693                 do_reset(cmdtp, flag, argc, argv);
 694
 695         return ret;
 696 }
 697
 698 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 699 /**
 700  * image_get_kernel - verify legacy format kernel image
 701  * @img_addr: in RAM address of the legacy format image to be verified
 702  * @verify: data CRC verification flag
 703  *
 704  * image_get_kernel() verifies legacy image integrity and returns pointer to
 705  * legacy image header if image verification was completed successfully.
 706  *
 707  * returns:
 708  *     pointer to a legacy image header if valid image was found
 709  *     otherwise return NULL
 710  */
 711 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 712 {
 713         image_header_t *hdr = (image_header_t *)img_addr;
 714
 715         if (!image_check_magic(hdr)) {
 716                 puts("Bad Magic Number\n");
 717                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 718                 return NULL;
 719         }
 720         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 721
 722         if (!image_check_hcrc(hdr)) {
 723                 puts("Bad Header Checksum\n");
 724                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 725                 return NULL;
 726         }
 727
 728         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 729         image_print_contents(hdr);
 730
 731         if (verify) {
 732                 puts("   Verifying Checksum ... ");
 733                 if (!image_check_dcrc(hdr)) {
 734                         printf("Bad Data CRC\n");
 735                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 736                         return NULL;
 737                 }
 738                 puts("OK\n");
 739         }
 740         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 741
 742         if (!image_check_target_arch(hdr)) {
 743                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 744                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 745                 return NULL;
 746         }
 747         return hdr;
 748 }
 749 #endif
 750
 751 /**
 752  * boot_get_kernel - find kernel image
 753  * @os_data: pointer to a ulong variable, will hold os data start address
 754  * @os_len: pointer to a ulong variable, will hold os data length
 755  *
 756  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 757  * and locates kernel data.
 758  *
 759  * returns:
 760  *     pointer to image header if valid image was found, plus kernel start
 761  *     address and length, otherwise NULL
 762  */
 763 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 764                                    char * const argv[], bootm_headers_t *images,
 765                                    ulong *os_data, ulong *os_len)
 766 {
 767 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 768         image_header_t  *hdr;
 769 #endif
 770         ulong           img_addr;
 771         const void *buf;
 772         const char      *fit_uname_config = NULL;
 773         const char      *fit_uname_kernel = NULL;
 774 #if defined(CONFIG_FIT)
 775         int             os_noffset;
 776 #endif
 777
 778         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 779                                               &fit_uname_config,
 780                                               &fit_uname_kernel);
 781
 782         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 783
 784         /* copy from dataflash if needed */
 785         img_addr = genimg_get_image(img_addr);
 786
 787         /* check image type, for FIT images get FIT kernel node */
 788         *os_data = *os_len = 0;
 789         buf = map_sysmem(img_addr, 0);
 790         switch (genimg_get_format(buf)) {
 791 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 792         case IMAGE_FORMAT_LEGACY:
 793                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 794                        img_addr);
 795                 hdr = image_get_kernel(img_addr, images->verify);
 796                 if (!hdr)
 797                         return NULL;
 798                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 799
 800                 /* get os_data and os_len */
 801                 switch (image_get_type(hdr)) {
 802                 case IH_TYPE_KERNEL:
 803                 case IH_TYPE_KERNEL_NOLOAD:
 804                         *os_data = image_get_data(hdr);
 805                         *os_len = image_get_data_size(hdr);
 806                         break;
 807                 case IH_TYPE_MULTI:
 808                         image_multi_getimg(hdr, 0, os_data, os_len);
 809                         break;
 810                 case IH_TYPE_STANDALONE:
 811                         *os_data = image_get_data(hdr);
 812                         *os_len = image_get_data_size(hdr);
 813                         break;
 814                 default:
 815                         printf("Wrong Image Type for %s command\n",
 816                                cmdtp->name);
 817                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 818                         return NULL;
 819                 }
 820
 821                 /*
 822                  * copy image header to allow for image overwrites during
 823                  * kernel decompression.
 824                  */
 825                 memmove(&images->legacy_hdr_os_copy, hdr,
 826                         sizeof(image_header_t));
 827
 828                 /* save pointer to image header */
 829                 images->legacy_hdr_os = hdr;
 830
 831                 images->legacy_hdr_valid = 1;
 832                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 833                 break;
 834 #endif
 835 #if defined(CONFIG_FIT)
 836         case IMAGE_FORMAT_FIT:
 837                 os_noffset = fit_image_load(images, img_addr,
 838                                 &fit_uname_kernel, &fit_uname_config,
 839                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 840                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 841                                 FIT_LOAD_IGNORED, os_data, os_len);
 842                 if (os_noffset < 0)
 843                         return NULL;
 844
 845                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 846                 images->fit_uname_os = fit_uname_kernel;
 847                 images->fit_uname_cfg = fit_uname_config;
 848                 images->fit_noffset_os = os_noffset;
 849                 break;
 850 #endif
 851 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 852         case IMAGE_FORMAT_ANDROID:
 853                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 854                 if (android_image_get_kernel(buf, images->verify,
 855                                              os_data, os_len))
 856                         return NULL;
 857                 break;
 858 #endif
 859         default:
 860                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 861                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 862                 return NULL;
 863         }
 864
 865         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 866               *os_data, *os_len, *os_len);
 867
 868         return buf;
 869 }
 870 #else /* USE_HOSTCC */
 871
 872 void memmove_wd(void *to, void *from, size_t len, ulong chunksz)
 873 {
 874         memmove(to, from, len);
 875 }
 876
 877 static int bootm_host_load_image(const void *fit, int req_image_type)
 878 {
 879         const char *fit_uname_config = NULL;
 880         ulong data, len;
 881         bootm_headers_t images;
 882         int noffset;
 883         ulong load_end;
 884         uint8_t image_type;
 885         uint8_t imape_comp;
 886         void *load_buf;
 887         int ret;
 888
 889         memset(&images, '\0', sizeof(images));
 890         images.verify = 1;
 891         noffset = fit_image_load(&images, (ulong)fit,
 892                 NULL, &fit_uname_config,
 893                 IH_ARCH_DEFAULT, req_image_type, -1,
 894                 FIT_LOAD_IGNORED, &data, &len);
 895         if (noffset < 0)
 896                 return noffset;
 897         if (fit_image_get_type(fit, noffset, &image_type)) {
 898                 puts("Can't get image type!\n");
 899                 return -EINVAL;
 900         }
 901
 902         if (fit_image_get_comp(fit, noffset, &imape_comp)) {
 903                 puts("Can't get image compression!\n");
 904                 return -EINVAL;
 905         }
 906
 907         /* Allow the image to expand by a factor of 4, should be safe */
 908         load_buf = malloc((1 << 20) + len * 4);
 909         ret = bootm_decomp_image(imape_comp, 0, data, image_type, load_buf,
 910                                  (void *)data, len, CONFIG_SYS_BOOTM_LEN,
 911                                  &load_end);
 912         free(load_buf);
 913
 914         if (ret && ret != BOOTM_ERR_UNIMPLEMENTED)
 915                 return ret;
 916
 917         return 0;
 918 }
 919
 920 int bootm_host_load_images(const void *fit, int cfg_noffset)
 921 {
 922         static uint8_t image_types[] = {
 923                 IH_TYPE_KERNEL,
 924                 IH_TYPE_FLATDT,
 925                 IH_TYPE_RAMDISK,
 926         };
 927         int err = 0;
 928         int i;
 929
 930         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
 931                 int ret;
 932
 933                 ret = bootm_host_load_image(fit, image_types[i]);
 934                 if (!err && ret && ret != -ENOENT)
 935                         err = ret;
 936         }
 937
 938         /* Return the first error we found */
 939         return err;
 940 }
 941
 942 #endif /* ndef USE_HOSTCC */