boot/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 <cli.h>
  11 #include <cpu_func.h>
  12 #include <env.h>
  13 #include <errno.h>
  14 #include <fdt_support.h>
  15 #include <irq_func.h>
  16 #include <lmb.h>
  17 #include <log.h>
  18 #include <malloc.h>
  19 #include <mapmem.h>
  20 #include <net.h>
  21 #include <asm/cache.h>
  22 #include <asm/global_data.h>
  23 #include <asm/io.h>
  24 #include <linux/sizes.h>
  25 #if defined(CONFIG_CMD_USB)
  26 #include <usb.h>
  27 #endif
  28 #else
  29 #include "mkimage.h"
  30 #endif
  31
  32 #include <command.h>
  33 #include <bootm.h>
  34 #include <image.h>
  35
  36 #define MAX_CMDLINE_SIZE        SZ_4K
  37
  38 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  39
  40 #ifndef USE_HOSTCC
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 struct bootm_headers images;            /* pointers to os/initrd/fdt images */
  45
  46 static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
  47                                    char *const argv[], struct bootm_headers *images,
  48                                    ulong *os_data, ulong *os_len);
  49
  50 __weak void board_quiesce_devices(void)
  51 {
  52 }
  53
  54 #ifdef CONFIG_LMB
  55 static void boot_start_lmb(struct bootm_headers *images)
  56 {
  57         ulong           mem_start;
  58         phys_size_t     mem_size;
  59
  60         mem_start = env_get_bootm_low();
  61         mem_size = env_get_bootm_size();
  62
  63         lmb_init_and_reserve_range(&images->lmb, (phys_addr_t)mem_start,
  64                                    mem_size, NULL);
  65 }
  66 #else
  67 #define lmb_reserve(lmb, base, size)
  68 static inline void boot_start_lmb(struct bootm_headers *images) { }
  69 #endif
  70
  71 static int bootm_start(struct cmd_tbl *cmdtp, int flag, int argc,
  72                        char *const argv[])
  73 {
  74         memset((void *)&images, 0, sizeof(images));
  75         images.verify = env_get_yesno("verify");
  76
  77         boot_start_lmb(&images);
  78
  79         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  80         images.state = BOOTM_STATE_START;
  81
  82         return 0;
  83 }
  84
  85 static ulong bootm_data_addr(int argc, char *const argv[])
  86 {
  87         ulong addr;
  88
  89         if (argc > 0)
  90                 addr = simple_strtoul(argv[0], NULL, 16);
  91         else
  92                 addr = image_load_addr;
  93
  94         return addr;
  95 }
  96
  97 static int bootm_pre_load(struct cmd_tbl *cmdtp, int flag, int argc,
  98                           char *const argv[])
  99 {
 100         ulong data_addr = bootm_data_addr(argc, argv);
 101         int ret = 0;
 102
 103         if (CONFIG_IS_ENABLED(CMD_BOOTM_PRE_LOAD))
 104                 ret = image_pre_load(data_addr);
 105
 106         if (ret)
 107                 ret = CMD_RET_FAILURE;
 108
 109         return ret;
 110 }
 111
 112 static int bootm_find_os(struct cmd_tbl *cmdtp, int flag, int argc,
 113                          char *const argv[])
 114 {
 115         const void *os_hdr;
 116         bool ep_found = false;
 117         int ret;
 118
 119         /* get kernel image header, start address and length */
 120         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
 121                         &images, &images.os.image_start, &images.os.image_len);
 122         if (images.os.image_len == 0) {
 123                 puts("ERROR: can't get kernel image!\n");
 124                 return 1;
 125         }
 126
 127         /* get image parameters */
 128         switch (genimg_get_format(os_hdr)) {
 129 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 130         case IMAGE_FORMAT_LEGACY:
 131                 images.os.type = image_get_type(os_hdr);
 132                 images.os.comp = image_get_comp(os_hdr);
 133                 images.os.os = image_get_os(os_hdr);
 134
 135                 images.os.end = image_get_image_end(os_hdr);
 136                 images.os.load = image_get_load(os_hdr);
 137                 images.os.arch = image_get_arch(os_hdr);
 138                 break;
 139 #endif
 140 #if CONFIG_IS_ENABLED(FIT)
 141         case IMAGE_FORMAT_FIT:
 142                 if (fit_image_get_type(images.fit_hdr_os,
 143                                        images.fit_noffset_os,
 144                                        &images.os.type)) {
 145                         puts("Can't get image type!\n");
 146                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 147                         return 1;
 148                 }
 149
 150                 if (fit_image_get_comp(images.fit_hdr_os,
 151                                        images.fit_noffset_os,
 152                                        &images.os.comp)) {
 153                         puts("Can't get image compression!\n");
 154                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 155                         return 1;
 156                 }
 157
 158                 if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
 159                                      &images.os.os)) {
 160                         puts("Can't get image OS!\n");
 161                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 162                         return 1;
 163                 }
 164
 165                 if (fit_image_get_arch(images.fit_hdr_os,
 166                                        images.fit_noffset_os,
 167                                        &images.os.arch)) {
 168                         puts("Can't get image ARCH!\n");
 169                         return 1;
 170                 }
 171
 172                 images.os.end = fit_get_end(images.fit_hdr_os);
 173
 174                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 175                                        &images.os.load)) {
 176                         puts("Can't get image load address!\n");
 177                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 178                         return 1;
 179                 }
 180                 break;
 181 #endif
 182 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 183         case IMAGE_FORMAT_ANDROID:
 184                 images.os.type = IH_TYPE_KERNEL;
 185                 images.os.comp = android_image_get_kcomp(os_hdr);
 186                 images.os.os = IH_OS_LINUX;
 187
 188                 images.os.end = android_image_get_end(os_hdr);
 189                 images.os.load = android_image_get_kload(os_hdr);
 190                 images.ep = images.os.load;
 191                 ep_found = true;
 192                 break;
 193 #endif
 194         default:
 195                 puts("ERROR: unknown image format type!\n");
 196                 return 1;
 197         }
 198
 199         /* If we have a valid setup.bin, we will use that for entry (x86) */
 200         if (images.os.arch == IH_ARCH_I386 ||
 201             images.os.arch == IH_ARCH_X86_64) {
 202                 ulong len;
 203
 204                 ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
 205                 if (ret < 0 && ret != -ENOENT) {
 206                         puts("Could not find a valid setup.bin for x86\n");
 207                         return 1;
 208                 }
 209                 /* Kernel entry point is the setup.bin */
 210         } else if (images.legacy_hdr_valid) {
 211                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 212 #if CONFIG_IS_ENABLED(FIT)
 213         } else if (images.fit_uname_os) {
 214                 int ret;
 215
 216                 ret = fit_image_get_entry(images.fit_hdr_os,
 217                                           images.fit_noffset_os, &images.ep);
 218                 if (ret) {
 219                         puts("Can't get entry point property!\n");
 220                         return 1;
 221                 }
 222 #endif
 223         } else if (!ep_found) {
 224                 puts("Could not find kernel entry point!\n");
 225                 return 1;
 226         }
 227
 228         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 229                 if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
 230                     images.os.arch == IH_ARCH_ARM64) {
 231                         ulong image_addr;
 232                         ulong image_size;
 233
 234                         ret = booti_setup(images.os.image_start, &image_addr,
 235                                           &image_size, true);
 236                         if (ret != 0)
 237                                 return 1;
 238
 239                         images.os.type = IH_TYPE_KERNEL;
 240                         images.os.load = image_addr;
 241                         images.ep = image_addr;
 242                 } else {
 243                         images.os.load = images.os.image_start;
 244                         images.ep += images.os.image_start;
 245                 }
 246         }
 247
 248         images.os.start = map_to_sysmem(os_hdr);
 249
 250         return 0;
 251 }
 252
 253 /**
 254  * bootm_find_images - wrapper to find and locate various images
 255  * @flag: Ignored Argument
 256  * @argc: command argument count
 257  * @argv: command argument list
 258  * @start: OS image start address
 259  * @size: OS image size
 260  *
 261  * boot_find_images() will attempt to load an available ramdisk,
 262  * flattened device tree, as well as specifically marked
 263  * "loadable" images (loadables are FIT only)
 264  *
 265  * Note: bootm_find_images will skip an image if it is not found
 266  *
 267  * @return:
 268  *     0, if all existing images were loaded correctly
 269  *     1, if an image is found but corrupted, or invalid
 270  */
 271 int bootm_find_images(int flag, int argc, char *const argv[], ulong start,
 272                       ulong size)
 273 {
 274         int ret;
 275
 276         /* find ramdisk */
 277         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 278                                &images.rd_start, &images.rd_end);
 279         if (ret) {
 280                 puts("Ramdisk image is corrupt or invalid\n");
 281                 return 1;
 282         }
 283
 284         /* check if ramdisk overlaps OS image */
 285         if (images.rd_start && (((ulong)images.rd_start >= start &&
 286                                  (ulong)images.rd_start < start + size) ||
 287                                 ((ulong)images.rd_end > start &&
 288                                  (ulong)images.rd_end <= start + size) ||
 289                                 ((ulong)images.rd_start < start &&
 290                                  (ulong)images.rd_end >= start + size))) {
 291                 printf("ERROR: RD image overlaps OS image (OS=0x%lx..0x%lx)\n",
 292                        start, start + size);
 293                 return 1;
 294         }
 295
 296 #if CONFIG_IS_ENABLED(OF_LIBFDT)
 297         /* find flattened device tree */
 298         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 299                            &images.ft_addr, &images.ft_len);
 300         if (ret) {
 301                 puts("Could not find a valid device tree\n");
 302                 return 1;
 303         }
 304
 305         /* check if FDT overlaps OS image */
 306         if (images.ft_addr &&
 307             (((ulong)images.ft_addr >= start &&
 308               (ulong)images.ft_addr < start + size) ||
 309              ((ulong)images.ft_addr + images.ft_len >= start &&
 310               (ulong)images.ft_addr + images.ft_len < start + size))) {
 311                 printf("ERROR: FDT image overlaps OS image (OS=0x%lx..0x%lx)\n",
 312                        start, start + size);
 313                 return 1;
 314         }
 315
 316         if (CONFIG_IS_ENABLED(CMD_FDT))
 317                 set_working_fdt_addr(map_to_sysmem(images.ft_addr));
 318 #endif
 319
 320 #if CONFIG_IS_ENABLED(FIT)
 321         if (IS_ENABLED(CONFIG_FPGA)) {
 322                 /* find bitstreams */
 323                 ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
 324                                     NULL, NULL);
 325                 if (ret) {
 326                         printf("FPGA image is corrupted or invalid\n");
 327                         return 1;
 328                 }
 329         }
 330
 331         /* find all of the loadables */
 332         ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
 333                                NULL, NULL);
 334         if (ret) {
 335                 printf("Loadable(s) is corrupt or invalid\n");
 336                 return 1;
 337         }
 338 #endif
 339
 340         return 0;
 341 }
 342
 343 static int bootm_find_other(struct cmd_tbl *cmdtp, int flag, int argc,
 344                             char *const argv[])
 345 {
 346         if (((images.os.type == IH_TYPE_KERNEL) ||
 347              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 348              (images.os.type == IH_TYPE_MULTI)) &&
 349             (images.os.os == IH_OS_LINUX ||
 350                  images.os.os == IH_OS_VXWORKS))
 351                 return bootm_find_images(flag, argc, argv, 0, 0);
 352
 353         return 0;
 354 }
 355 #endif /* USE_HOSTC */
 356
 357 #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
 358 /**
 359  * handle_decomp_error() - display a decompression error
 360  *
 361  * This function tries to produce a useful message. In the case where the
 362  * uncompressed size is the same as the available space, we can assume that
 363  * the image is too large for the buffer.
 364  *
 365  * @comp_type:          Compression type being used (IH_COMP_...)
 366  * @uncomp_size:        Number of bytes uncompressed
 367  * @buf_size:           Number of bytes the decompresion buffer was
 368  * @ret:                errno error code received from compression library
 369  * Return: Appropriate BOOTM_ERR_ error code
 370  */
 371 static int handle_decomp_error(int comp_type, size_t uncomp_size,
 372                                size_t buf_size, int ret)
 373 {
 374         const char *name = genimg_get_comp_name(comp_type);
 375
 376         /* ENOSYS means unimplemented compression type, don't reset. */
 377         if (ret == -ENOSYS)
 378                 return BOOTM_ERR_UNIMPLEMENTED;
 379
 380         if (uncomp_size >= buf_size)
 381                 printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
 382         else
 383                 printf("%s: uncompress error %d\n", name, ret);
 384
 385         /*
 386          * The decompression routines are now safe, so will not write beyond
 387          * their bounds. Probably it is not necessary to reset, but maintain
 388          * the current behaviour for now.
 389          */
 390         printf("Must RESET board to recover\n");
 391 #ifndef USE_HOSTCC
 392         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 393 #endif
 394
 395         return BOOTM_ERR_RESET;
 396 }
 397 #endif
 398
 399 #ifndef USE_HOSTCC
 400 static int bootm_load_os(struct bootm_headers *images, int boot_progress)
 401 {
 402         struct image_info os = images->os;
 403         ulong load = os.load;
 404         ulong load_end;
 405         ulong blob_start = os.start;
 406         ulong blob_end = os.end;
 407         ulong image_start = os.image_start;
 408         ulong image_len = os.image_len;
 409         ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
 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 = image_decomp(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                 err = handle_decomp_error(os.comp, load_end - load,
 421                                           CONFIG_SYS_BOOTM_LEN, err);
 422                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 423                 return err;
 424         }
 425         /* We need the decompressed image size in the next steps */
 426         images->os.image_len = load_end - load;
 427
 428         flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
 429
 430         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
 431         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 432
 433         no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
 434
 435         if (!no_overlap && load < blob_end && load_end > blob_start) {
 436                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 437                       blob_start, blob_end);
 438                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 439                       load_end);
 440
 441                 /* Check what type of image this is. */
 442                 if (images->legacy_hdr_valid) {
 443                         if (image_get_type(&images->legacy_hdr_os_copy)
 444                                         == IH_TYPE_MULTI)
 445                                 puts("WARNING: legacy format multi component image overwritten\n");
 446                         return BOOTM_ERR_OVERLAP;
 447                 } else {
 448                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 449                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 450                         return BOOTM_ERR_RESET;
 451                 }
 452         }
 453
 454         lmb_reserve(&images->lmb, images->os.load, (load_end -
 455                                                     images->os.load));
 456         return 0;
 457 }
 458
 459 /**
 460  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 461  *
 462  * Return: interrupt flag (0 if interrupts were disabled, non-zero if they were
 463  *      enabled)
 464  */
 465 ulong bootm_disable_interrupts(void)
 466 {
 467         ulong iflag;
 468
 469         /*
 470          * We have reached the point of no return: we are going to
 471          * overwrite all exception vector code, so we cannot easily
 472          * recover from any failures any more...
 473          */
 474         iflag = disable_interrupts();
 475 #ifdef CONFIG_NETCONSOLE
 476         /* Stop the ethernet stack if NetConsole could have left it up */
 477         eth_halt();
 478 # ifndef CONFIG_DM_ETH
 479         eth_unregister(eth_get_dev());
 480 # endif
 481 #endif
 482
 483 #if defined(CONFIG_CMD_USB)
 484         /*
 485          * turn off USB to prevent the host controller from writing to the
 486          * SDRAM while Linux is booting. This could happen (at least for OHCI
 487          * controller), because the HCCA (Host Controller Communication Area)
 488          * lies within the SDRAM and the host controller writes continously to
 489          * this area (as busmaster!). The HccaFrameNumber is for example
 490          * updated every 1 ms within the HCCA structure in SDRAM! For more
 491          * details see the OpenHCI specification.
 492          */
 493         usb_stop();
 494 #endif
 495         return iflag;
 496 }
 497
 498 #define CONSOLE_ARG             "console="
 499 #define NULL_CONSOLE            (CONSOLE_ARG "ttynull")
 500 #define CONSOLE_ARG_SIZE        sizeof(NULL_CONSOLE)
 501
 502 /**
 503  * fixup_silent_linux() - Handle silencing the linux boot if required
 504  *
 505  * This uses the silent_linux envvar to control whether to add/set a "console="
 506  * parameter to the command line
 507  *
 508  * @buf: Buffer containing the string to process
 509  * @maxlen: Maximum length of buffer
 510  * Return: 0 if OK, -ENOSPC if @maxlen is too small
 511  */
 512 static int fixup_silent_linux(char *buf, int maxlen)
 513 {
 514         int want_silent;
 515         char *cmdline;
 516         int size;
 517
 518         /*
 519          * Move the input string to the end of buffer. The output string will be
 520          * built up at the start.
 521          */
 522         size = strlen(buf) + 1;
 523         if (size * 2 > maxlen)
 524                 return -ENOSPC;
 525         cmdline = buf + maxlen - size;
 526         memmove(cmdline, buf, size);
 527         /*
 528          * Only fix cmdline when requested. The environment variable can be:
 529          *
 530          *      no - we never fixup
 531          *      yes - we always fixup
 532          *      unset - we rely on the console silent flag
 533          */
 534         want_silent = env_get_yesno("silent_linux");
 535         if (want_silent == 0)
 536                 return 0;
 537         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
 538                 return 0;
 539
 540         debug("before silent fix-up: %s\n", cmdline);
 541         if (*cmdline) {
 542                 char *start = strstr(cmdline, CONSOLE_ARG);
 543
 544                 /* Check space for maximum possible new command line */
 545                 if (size + CONSOLE_ARG_SIZE > maxlen)
 546                         return -ENOSPC;
 547
 548                 if (start) {
 549                         char *end = strchr(start, ' ');
 550                         int start_bytes;
 551
 552                         start_bytes = start - cmdline;
 553                         strncpy(buf, cmdline, start_bytes);
 554                         strncpy(buf + start_bytes, NULL_CONSOLE, CONSOLE_ARG_SIZE);
 555                         if (end)
 556                                 strcpy(buf + start_bytes + CONSOLE_ARG_SIZE - 1, end);
 557                         else
 558                                 buf[start_bytes + CONSOLE_ARG_SIZE] = '\0';
 559                 } else {
 560                         sprintf(buf, "%s %s", cmdline, NULL_CONSOLE);
 561                 }
 562                 if (buf + strlen(buf) >= cmdline)
 563                         return -ENOSPC;
 564         } else {
 565                 if (maxlen < CONSOLE_ARG_SIZE)
 566                         return -ENOSPC;
 567                 strcpy(buf, NULL_CONSOLE);
 568         }
 569         debug("after silent fix-up: %s\n", buf);
 570
 571         return 0;
 572 }
 573
 574 /**
 575  * process_subst() - Handle substitution of ${...} fields in the environment
 576  *
 577  * Handle variable substitution in the provided buffer
 578  *
 579  * @buf: Buffer containing the string to process
 580  * @maxlen: Maximum length of buffer
 581  * Return: 0 if OK, -ENOSPC if @maxlen is too small
 582  */
 583 static int process_subst(char *buf, int maxlen)
 584 {
 585         char *cmdline;
 586         int size;
 587         int ret;
 588
 589         /* Move to end of buffer */
 590         size = strlen(buf) + 1;
 591         cmdline = buf + maxlen - size;
 592         if (buf + size > cmdline)
 593                 return -ENOSPC;
 594         memmove(cmdline, buf, size);
 595
 596         ret = cli_simple_process_macros(cmdline, buf, cmdline - buf);
 597
 598         return ret;
 599 }
 600
 601 int bootm_process_cmdline(char *buf, int maxlen, int flags)
 602 {
 603         int ret;
 604
 605         /* Check config first to enable compiler to eliminate code */
 606         if (IS_ENABLED(CONFIG_SILENT_CONSOLE) &&
 607             !IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) &&
 608             (flags & BOOTM_CL_SILENT)) {
 609                 ret = fixup_silent_linux(buf, maxlen);
 610                 if (ret)
 611                         return log_msg_ret("silent", ret);
 612         }
 613         if (IS_ENABLED(CONFIG_BOOTARGS_SUBST) && IS_ENABLED(CONFIG_CMDLINE) &&
 614             (flags & BOOTM_CL_SUBST)) {
 615                 ret = process_subst(buf, maxlen);
 616                 if (ret)
 617                         return log_msg_ret("subst", ret);
 618         }
 619
 620         return 0;
 621 }
 622
 623 int bootm_process_cmdline_env(int flags)
 624 {
 625         const int maxlen = MAX_CMDLINE_SIZE;
 626         bool do_silent;
 627         const char *env;
 628         char *buf;
 629         int ret;
 630
 631         /* First check if any action is needed */
 632         do_silent = IS_ENABLED(CONFIG_SILENT_CONSOLE) &&
 633             !IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) && (flags & BOOTM_CL_SILENT);
 634         if (!do_silent && !IS_ENABLED(CONFIG_BOOTARGS_SUBST))
 635                 return 0;
 636
 637         env = env_get("bootargs");
 638         if (env && strlen(env) >= maxlen)
 639                 return -E2BIG;
 640         buf = malloc(maxlen);
 641         if (!buf)
 642                 return -ENOMEM;
 643         if (env)
 644                 strcpy(buf, env);
 645         else
 646                 *buf = '\0';
 647         ret = bootm_process_cmdline(buf, maxlen, flags);
 648         if (!ret) {
 649                 ret = env_set("bootargs", buf);
 650
 651                 /*
 652                  * If buf is "" and bootargs does not exist, this will produce
 653                  * an error trying to delete bootargs. Ignore it
 654                  */
 655                 if (ret == -ENOENT)
 656                         ret = 0;
 657         }
 658         free(buf);
 659         if (ret)
 660                 return log_msg_ret("env", ret);
 661
 662         return 0;
 663 }
 664
 665 /**
 666  * Execute selected states of the bootm command.
 667  *
 668  * Note the arguments to this state must be the first argument, Any 'bootm'
 669  * or sub-command arguments must have already been taken.
 670  *
 671  * Note that if states contains more than one flag it MUST contain
 672  * BOOTM_STATE_START, since this handles and consumes the command line args.
 673  *
 674  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 675  * functions we store the return value of in 'ret' may use a negative return
 676  * value, without special handling.
 677  *
 678  * @param cmdtp         Pointer to bootm command table entry
 679  * @param flag          Command flags (CMD_FLAG_...)
 680  * @param argc          Number of subcommand arguments (0 = no arguments)
 681  * @param argv          Arguments
 682  * @param states        Mask containing states to run (BOOTM_STATE_...)
 683  * @param images        Image header information
 684  * @param boot_progress 1 to show boot progress, 0 to not do this
 685  * Return: 0 if ok, something else on error. Some errors will cause this
 686  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 687  *      then the intent is to boot an OS, so this function will not return
 688  *      unless the image type is standalone.
 689  */
 690 int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
 691                     char *const argv[], int states, struct bootm_headers *images,
 692                     int boot_progress)
 693 {
 694         boot_os_fn *boot_fn;
 695         ulong iflag = 0;
 696         int ret = 0, need_boot_fn;
 697
 698         images->state |= states;
 699
 700         /*
 701          * Work through the states and see how far we get. We stop on
 702          * any error.
 703          */
 704         if (states & BOOTM_STATE_START)
 705                 ret = bootm_start(cmdtp, flag, argc, argv);
 706
 707         if (!ret && (states & BOOTM_STATE_PRE_LOAD))
 708                 ret = bootm_pre_load(cmdtp, flag, argc, argv);
 709
 710         if (!ret && (states & BOOTM_STATE_FINDOS))
 711                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 712
 713         if (!ret && (states & BOOTM_STATE_FINDOTHER))
 714                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 715
 716         /* Load the OS */
 717         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 718                 iflag = bootm_disable_interrupts();
 719                 ret = bootm_load_os(images, 0);
 720                 if (ret && ret != BOOTM_ERR_OVERLAP)
 721                         goto err;
 722                 else if (ret == BOOTM_ERR_OVERLAP)
 723                         ret = 0;
 724         }
 725
 726         /* Relocate the ramdisk */
 727 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 728         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 729                 ulong rd_len = images->rd_end - images->rd_start;
 730
 731                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 732                         rd_len, &images->initrd_start, &images->initrd_end);
 733                 if (!ret) {
 734                         env_set_hex("initrd_start", images->initrd_start);
 735                         env_set_hex("initrd_end", images->initrd_end);
 736                 }
 737         }
 738 #endif
 739 #if CONFIG_IS_ENABLED(OF_LIBFDT) && defined(CONFIG_LMB)
 740         if (!ret && (states & BOOTM_STATE_FDT)) {
 741                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 742                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 743                                         &images->ft_len);
 744         }
 745 #endif
 746
 747         /* From now on, we need the OS boot function */
 748         if (ret)
 749                 return ret;
 750         boot_fn = bootm_os_get_boot_func(images->os.os);
 751         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 752                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 753                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 754         if (boot_fn == NULL && need_boot_fn) {
 755                 if (iflag)
 756                         enable_interrupts();
 757                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 758                        genimg_get_os_name(images->os.os), images->os.os);
 759                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 760                 return 1;
 761         }
 762
 763
 764         /* Call various other states that are not generally used */
 765         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 766                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 767         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 768                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 769         if (!ret && (states & BOOTM_STATE_OS_PREP)) {
 770                 ret = bootm_process_cmdline_env(images->os.os == IH_OS_LINUX);
 771                 if (ret) {
 772                         printf("Cmdline setup failed (err=%d)\n", ret);
 773                         ret = CMD_RET_FAILURE;
 774                         goto err;
 775                 }
 776                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 777         }
 778
 779 #ifdef CONFIG_TRACE
 780         /* Pretend to run the OS, then run a user command */
 781         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 782                 char *cmd_list = env_get("fakegocmd");
 783
 784                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 785                                 images, boot_fn);
 786                 if (!ret && cmd_list)
 787                         ret = run_command_list(cmd_list, -1, flag);
 788         }
 789 #endif
 790
 791         /* Check for unsupported subcommand. */
 792         if (ret) {
 793                 printf("subcommand failed (err=%d)\n", ret);
 794                 return ret;
 795         }
 796
 797         /* Now run the OS! We hope this doesn't return */
 798         if (!ret && (states & BOOTM_STATE_OS_GO))
 799                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 800                                 images, boot_fn);
 801
 802         /* Deal with any fallout */
 803 err:
 804         if (iflag)
 805                 enable_interrupts();
 806
 807         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 808                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 809         else if (ret == BOOTM_ERR_RESET)
 810                 do_reset(cmdtp, flag, argc, argv);
 811
 812         return ret;
 813 }
 814
 815 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 816 /**
 817  * image_get_kernel - verify legacy format kernel image
 818  * @img_addr: in RAM address of the legacy format image to be verified
 819  * @verify: data CRC verification flag
 820  *
 821  * image_get_kernel() verifies legacy image integrity and returns pointer to
 822  * legacy image header if image verification was completed successfully.
 823  *
 824  * returns:
 825  *     pointer to a legacy image header if valid image was found
 826  *     otherwise return NULL
 827  */
 828 static struct legacy_img_hdr *image_get_kernel(ulong img_addr, int verify)
 829 {
 830         struct legacy_img_hdr *hdr = (struct legacy_img_hdr *)img_addr;
 831
 832         if (!image_check_magic(hdr)) {
 833                 puts("Bad Magic Number\n");
 834                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 835                 return NULL;
 836         }
 837         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 838
 839         if (!image_check_hcrc(hdr)) {
 840                 puts("Bad Header Checksum\n");
 841                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 842                 return NULL;
 843         }
 844
 845         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 846         image_print_contents(hdr);
 847
 848         if (verify) {
 849                 puts("   Verifying Checksum ... ");
 850                 if (!image_check_dcrc(hdr)) {
 851                         printf("Bad Data CRC\n");
 852                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 853                         return NULL;
 854                 }
 855                 puts("OK\n");
 856         }
 857         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 858
 859         if (!image_check_target_arch(hdr)) {
 860                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 861                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 862                 return NULL;
 863         }
 864         return hdr;
 865 }
 866 #endif
 867
 868 /**
 869  * boot_get_kernel - find kernel image
 870  * @os_data: pointer to a ulong variable, will hold os data start address
 871  * @os_len: pointer to a ulong variable, will hold os data length
 872  *
 873  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 874  * and locates kernel data.
 875  *
 876  * returns:
 877  *     pointer to image header if valid image was found, plus kernel start
 878  *     address and length, otherwise NULL
 879  */
 880 static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
 881                                    char *const argv[], struct bootm_headers *images,
 882                                    ulong *os_data, ulong *os_len)
 883 {
 884 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 885         struct legacy_img_hdr   *hdr;
 886 #endif
 887         ulong           img_addr;
 888         const void *buf;
 889         const char      *fit_uname_config = NULL;
 890         const char      *fit_uname_kernel = NULL;
 891 #if CONFIG_IS_ENABLED(FIT)
 892         int             os_noffset;
 893 #endif
 894
 895         img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
 896                                               &fit_uname_config,
 897                                               &fit_uname_kernel);
 898
 899         if (CONFIG_IS_ENABLED(CMD_BOOTM_PRE_LOAD))
 900                 img_addr += image_load_offset;
 901
 902         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 903
 904         /* check image type, for FIT images get FIT kernel node */
 905         *os_data = *os_len = 0;
 906         buf = map_sysmem(img_addr, 0);
 907         switch (genimg_get_format(buf)) {
 908 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 909         case IMAGE_FORMAT_LEGACY:
 910                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 911                        img_addr);
 912                 hdr = image_get_kernel(img_addr, images->verify);
 913                 if (!hdr)
 914                         return NULL;
 915                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 916
 917                 /* get os_data and os_len */
 918                 switch (image_get_type(hdr)) {
 919                 case IH_TYPE_KERNEL:
 920                 case IH_TYPE_KERNEL_NOLOAD:
 921                         *os_data = image_get_data(hdr);
 922                         *os_len = image_get_data_size(hdr);
 923                         break;
 924                 case IH_TYPE_MULTI:
 925                         image_multi_getimg(hdr, 0, os_data, os_len);
 926                         break;
 927                 case IH_TYPE_STANDALONE:
 928                         *os_data = image_get_data(hdr);
 929                         *os_len = image_get_data_size(hdr);
 930                         break;
 931                 default:
 932                         printf("Wrong Image Type for %s command\n",
 933                                cmdtp->name);
 934                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 935                         return NULL;
 936                 }
 937
 938                 /*
 939                  * copy image header to allow for image overwrites during
 940                  * kernel decompression.
 941                  */
 942                 memmove(&images->legacy_hdr_os_copy, hdr,
 943                         sizeof(struct legacy_img_hdr));
 944
 945                 /* save pointer to image header */
 946                 images->legacy_hdr_os = hdr;
 947
 948                 images->legacy_hdr_valid = 1;
 949                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 950                 break;
 951 #endif
 952 #if CONFIG_IS_ENABLED(FIT)
 953         case IMAGE_FORMAT_FIT:
 954                 os_noffset = fit_image_load(images, img_addr,
 955                                 &fit_uname_kernel, &fit_uname_config,
 956                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
 957                                 BOOTSTAGE_ID_FIT_KERNEL_START,
 958                                 FIT_LOAD_IGNORED, os_data, os_len);
 959                 if (os_noffset < 0)
 960                         return NULL;
 961
 962                 images->fit_hdr_os = map_sysmem(img_addr, 0);
 963                 images->fit_uname_os = fit_uname_kernel;
 964                 images->fit_uname_cfg = fit_uname_config;
 965                 images->fit_noffset_os = os_noffset;
 966                 break;
 967 #endif
 968 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 969         case IMAGE_FORMAT_ANDROID:
 970                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
 971                 if (android_image_get_kernel(buf, images->verify,
 972                                              os_data, os_len))
 973                         return NULL;
 974                 break;
 975 #endif
 976         default:
 977                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 978                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 979                 return NULL;
 980         }
 981
 982         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 983               *os_data, *os_len, *os_len);
 984
 985         return buf;
 986 }
 987
 988 /**
 989  * switch_to_non_secure_mode() - switch to non-secure mode
 990  *
 991  * This routine is overridden by architectures requiring this feature.
 992  */
 993 void __weak switch_to_non_secure_mode(void)
 994 {
 995 }
 996
 997 #else /* USE_HOSTCC */
 998
 999 #if defined(CONFIG_FIT_SIGNATURE)
1000 static int bootm_host_load_image(const void *fit, int req_image_type,
1001                                  int cfg_noffset)
1002 {
1003         const char *fit_uname_config = NULL;
1004         ulong data, len;
1005         struct bootm_headers images;
1006         int noffset;
1007         ulong load_end, buf_size;
1008         uint8_t image_type;
1009         uint8_t image_comp;
1010         void *load_buf;
1011         int ret;
1012
1013         fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
1014         memset(&images, '\0', sizeof(images));
1015         images.verify = 1;
1016         noffset = fit_image_load(&images, (ulong)fit,
1017                 NULL, &fit_uname_config,
1018                 IH_ARCH_DEFAULT, req_image_type, -1,
1019                 FIT_LOAD_IGNORED, &data, &len);
1020         if (noffset < 0)
1021                 return noffset;
1022         if (fit_image_get_type(fit, noffset, &image_type)) {
1023                 puts("Can't get image type!\n");
1024                 return -EINVAL;
1025         }
1026
1027         if (fit_image_get_comp(fit, noffset, &image_comp))
1028                 image_comp = IH_COMP_NONE;
1029
1030         /* Allow the image to expand by a factor of 4, should be safe */
1031         buf_size = (1 << 20) + len * 4;
1032         load_buf = malloc(buf_size);
1033         ret = image_decomp(image_comp, 0, data, image_type, load_buf,
1034                            (void *)data, len, buf_size, &load_end);
1035         free(load_buf);
1036
1037         if (ret) {
1038                 ret = handle_decomp_error(image_comp, load_end - 0, buf_size, ret);
1039                 if (ret != BOOTM_ERR_UNIMPLEMENTED)
1040                         return ret;
1041         }
1042
1043         return 0;
1044 }
1045
1046 int bootm_host_load_images(const void *fit, int cfg_noffset)
1047 {
1048         static uint8_t image_types[] = {
1049                 IH_TYPE_KERNEL,
1050                 IH_TYPE_FLATDT,
1051                 IH_TYPE_RAMDISK,
1052         };
1053         int err = 0;
1054         int i;
1055
1056         for (i = 0; i < ARRAY_SIZE(image_types); i++) {
1057                 int ret;
1058
1059                 ret = bootm_host_load_image(fit, image_types[i], cfg_noffset);
1060                 if (!err && ret && ret != -ENOENT)
1061                         err = ret;
1062         }
1063
1064         /* Return the first error we found */
1065         return err;
1066 }
1067 #endif
1068
1069 #endif /* ndef USE_HOSTCC */