common/cmd_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
   9 /*
  10  * Boot support
  11  */
  12 #include <common.h>
  13 #include <watchdog.h>
  14 #include <command.h>
  15 #include <image.h>
  16 #include <malloc.h>
  17 #include <u-boot/zlib.h>
  18 #include <bzlib.h>
  19 #include <environment.h>
  20 #include <lmb.h>
  21 #include <linux/ctype.h>
  22 #include <asm/byteorder.h>
  23 #include <asm/io.h>
  24 #include <linux/compiler.h>
  25
  26 #if defined(CONFIG_BOOTM_VXWORKS) && \
  27         (defined(CONFIG_PPC) || defined(CONFIG_ARM))
  28 #include <vxworks.h>
  29 #endif
  30
  31 #if defined(CONFIG_CMD_USB)
  32 #include <usb.h>
  33 #endif
  34
  35 #ifdef CONFIG_SYS_HUSH_PARSER
  36 #include <hush.h>
  37 #endif
  38
  39 #if defined(CONFIG_OF_LIBFDT)
  40 #include <libfdt.h>
  41 #include <fdt_support.h>
  42 #endif
  43
  44 #ifdef CONFIG_LZMA
  45 #include <lzma/LzmaTypes.h>
  46 #include <lzma/LzmaDec.h>
  47 #include <lzma/LzmaTools.h>
  48 #endif /* CONFIG_LZMA */
  49
  50 #ifdef CONFIG_LZO
  51 #include <linux/lzo.h>
  52 #endif /* CONFIG_LZO */
  53
  54 DECLARE_GLOBAL_DATA_PTR;
  55
  56 #ifndef CONFIG_SYS_BOOTM_LEN
  57 #define CONFIG_SYS_BOOTM_LEN    0x800000        /* use 8MByte as default max gunzip size */
  58 #endif
  59
  60 #ifdef CONFIG_BZIP2
  61 extern void bz_internal_error(int);
  62 #endif
  63
  64 #if defined(CONFIG_CMD_IMI)
  65 static int image_info(unsigned long addr);
  66 #endif
  67
  68 #if defined(CONFIG_CMD_IMLS)
  69 #include <flash.h>
  70 #include <mtd/cfi_flash.h>
  71 extern flash_info_t flash_info[]; /* info for FLASH chips */
  72 #endif
  73
  74 #if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
  75 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  76 #endif
  77
  78 #include <linux/err.h>
  79 #include <nand.h>
  80
  81 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
  82 static void fixup_silent_linux(void);
  83 #endif
  84
  85 static int do_bootm_standalone(int flag, int argc, char * const argv[],
  86                                bootm_headers_t *images);
  87
  88 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  89                                 char * const argv[], bootm_headers_t *images,
  90                                 ulong *os_data, ulong *os_len);
  91
  92 /*
  93  *  Continue booting an OS image; caller already has:
  94  *  - copied image header to global variable `header'
  95  *  - checked header magic number, checksums (both header & image),
  96  *  - verified image architecture (PPC) and type (KERNEL or MULTI),
  97  *  - loaded (first part of) image to header load address,
  98  *  - disabled interrupts.
  99  *
 100  * @flag: Flags indicating what to do (BOOTM_STATE_...)
 101  * @argc: Number of arguments. Note that the arguments are shifted down
 102  *       so that 0 is the first argument not processed by U-Boot, and
 103  *       argc is adjusted accordingly. This avoids confusion as to how
 104  *       many arguments are available for the OS.
 105  * @images: Pointers to os/initrd/fdt
 106  * @return 1 on error. On success the OS boots so this function does
 107  * not return.
 108  */
 109 typedef int boot_os_fn(int flag, int argc, char * const argv[],
 110                         bootm_headers_t *images);
 111
 112 #ifdef CONFIG_BOOTM_LINUX
 113 extern boot_os_fn do_bootm_linux;
 114 #endif
 115 #ifdef CONFIG_BOOTM_NETBSD
 116 static boot_os_fn do_bootm_netbsd;
 117 #endif
 118 #if defined(CONFIG_LYNXKDI)
 119 static boot_os_fn do_bootm_lynxkdi;
 120 extern void lynxkdi_boot(image_header_t *);
 121 #endif
 122 #ifdef CONFIG_BOOTM_RTEMS
 123 static boot_os_fn do_bootm_rtems;
 124 #endif
 125 #if defined(CONFIG_BOOTM_OSE)
 126 static boot_os_fn do_bootm_ose;
 127 #endif
 128 #if defined(CONFIG_BOOTM_PLAN9)
 129 static boot_os_fn do_bootm_plan9;
 130 #endif
 131 #if defined(CONFIG_BOOTM_VXWORKS) && \
 132         (defined(CONFIG_PPC) || defined(CONFIG_ARM))
 133 static boot_os_fn do_bootm_vxworks;
 134 #endif
 135 #if defined(CONFIG_CMD_ELF)
 136 static boot_os_fn do_bootm_qnxelf;
 137 int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 138 int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 139 #endif
 140 #if defined(CONFIG_INTEGRITY)
 141 static boot_os_fn do_bootm_integrity;
 142 #endif
 143
 144 static boot_os_fn *boot_os[] = {
 145         [IH_OS_U_BOOT] = do_bootm_standalone,
 146 #ifdef CONFIG_BOOTM_LINUX
 147         [IH_OS_LINUX] = do_bootm_linux,
 148 #endif
 149 #ifdef CONFIG_BOOTM_NETBSD
 150         [IH_OS_NETBSD] = do_bootm_netbsd,
 151 #endif
 152 #ifdef CONFIG_LYNXKDI
 153         [IH_OS_LYNXOS] = do_bootm_lynxkdi,
 154 #endif
 155 #ifdef CONFIG_BOOTM_RTEMS
 156         [IH_OS_RTEMS] = do_bootm_rtems,
 157 #endif
 158 #if defined(CONFIG_BOOTM_OSE)
 159         [IH_OS_OSE] = do_bootm_ose,
 160 #endif
 161 #if defined(CONFIG_BOOTM_PLAN9)
 162         [IH_OS_PLAN9] = do_bootm_plan9,
 163 #endif
 164 #if defined(CONFIG_BOOTM_VXWORKS) && \
 165         (defined(CONFIG_PPC) || defined(CONFIG_ARM))
 166         [IH_OS_VXWORKS] = do_bootm_vxworks,
 167 #endif
 168 #if defined(CONFIG_CMD_ELF)
 169         [IH_OS_QNX] = do_bootm_qnxelf,
 170 #endif
 171 #ifdef CONFIG_INTEGRITY
 172         [IH_OS_INTEGRITY] = do_bootm_integrity,
 173 #endif
 174 };
 175
 176 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
 177
 178 /* Allow for arch specific config before we boot */
 179 static void __arch_preboot_os(void)
 180 {
 181         /* please define platform specific arch_preboot_os() */
 182 }
 183 void arch_preboot_os(void) __attribute__((weak, alias("__arch_preboot_os")));
 184
 185 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
 186
 187 #ifdef CONFIG_LMB
 188 static void boot_start_lmb(bootm_headers_t *images)
 189 {
 190         ulong           mem_start;
 191         phys_size_t     mem_size;
 192
 193         lmb_init(&images->lmb);
 194
 195         mem_start = getenv_bootm_low();
 196         mem_size = getenv_bootm_size();
 197
 198         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
 199
 200         arch_lmb_reserve(&images->lmb);
 201         board_lmb_reserve(&images->lmb);
 202 }
 203 #else
 204 #define lmb_reserve(lmb, base, size)
 205 static inline void boot_start_lmb(bootm_headers_t *images) { }
 206 #endif
 207
 208 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 209 {
 210         memset((void *)&images, 0, sizeof(images));
 211         images.verify = getenv_yesno("verify");
 212
 213         boot_start_lmb(&images);
 214
 215         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
 216         images.state = BOOTM_STATE_START;
 217
 218         return 0;
 219 }
 220
 221 static int bootm_find_os(cmd_tbl_t *cmdtp, int flag, int argc,
 222                          char * const argv[])
 223 {
 224         const void *os_hdr;
 225         bool ep_found = false;
 226
 227         /* get kernel image header, start address and length */
 228         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
 229                         &images, &images.os.image_start, &images.os.image_len);
 230         if (images.os.image_len == 0) {
 231                 puts("ERROR: can't get kernel image!\n");
 232                 return 1;
 233         }
 234
 235         /* get image parameters */
 236         switch (genimg_get_format(os_hdr)) {
 237         case IMAGE_FORMAT_LEGACY:
 238                 images.os.type = image_get_type(os_hdr);
 239                 images.os.comp = image_get_comp(os_hdr);
 240                 images.os.os = image_get_os(os_hdr);
 241
 242                 images.os.end = image_get_image_end(os_hdr);
 243                 images.os.load = image_get_load(os_hdr);
 244                 break;
 245 #if defined(CONFIG_FIT)
 246         case IMAGE_FORMAT_FIT:
 247                 if (fit_image_get_type(images.fit_hdr_os,
 248                                         images.fit_noffset_os, &images.os.type)) {
 249                         puts("Can't get image type!\n");
 250                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 251                         return 1;
 252                 }
 253
 254                 if (fit_image_get_comp(images.fit_hdr_os,
 255                                         images.fit_noffset_os, &images.os.comp)) {
 256                         puts("Can't get image compression!\n");
 257                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 258                         return 1;
 259                 }
 260
 261                 if (fit_image_get_os(images.fit_hdr_os,
 262                                         images.fit_noffset_os, &images.os.os)) {
 263                         puts("Can't get image OS!\n");
 264                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 265                         return 1;
 266                 }
 267
 268                 images.os.end = fit_get_end(images.fit_hdr_os);
 269
 270                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 271                                         &images.os.load)) {
 272                         puts("Can't get image load address!\n");
 273                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 274                         return 1;
 275                 }
 276                 break;
 277 #endif
 278 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 279         case IMAGE_FORMAT_ANDROID:
 280                 images.os.type = IH_TYPE_KERNEL;
 281                 images.os.comp = IH_COMP_NONE;
 282                 images.os.os = IH_OS_LINUX;
 283                 images.ep = images.os.load;
 284                 ep_found = true;
 285
 286                 images.os.end = android_image_get_end(os_hdr);
 287                 images.os.load = android_image_get_kload(os_hdr);
 288                 break;
 289 #endif
 290         default:
 291                 puts("ERROR: unknown image format type!\n");
 292                 return 1;
 293         }
 294
 295         /* find kernel entry point */
 296         if (images.legacy_hdr_valid) {
 297                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 298 #if defined(CONFIG_FIT)
 299         } else if (images.fit_uname_os) {
 300                 int ret;
 301
 302                 ret = fit_image_get_entry(images.fit_hdr_os,
 303                                           images.fit_noffset_os, &images.ep);
 304                 if (ret) {
 305                         puts("Can't get entry point property!\n");
 306                         return 1;
 307                 }
 308 #endif
 309         } else if (!ep_found) {
 310                 puts("Could not find kernel entry point!\n");
 311                 return 1;
 312         }
 313
 314         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 315                 images.os.load = images.os.image_start;
 316                 images.ep += images.os.load;
 317         }
 318
 319         images.os.start = (ulong)os_hdr;
 320
 321         return 0;
 322 }
 323
 324 static int bootm_find_ramdisk(int flag, int argc, char * const argv[])
 325 {
 326         int ret;
 327
 328         /* find ramdisk */
 329         ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 330                                &images.rd_start, &images.rd_end);
 331         if (ret) {
 332                 puts("Ramdisk image is corrupt or invalid\n");
 333                 return 1;
 334         }
 335
 336         return 0;
 337 }
 338
 339 #if defined(CONFIG_OF_LIBFDT)
 340 static int bootm_find_fdt(int flag, int argc, char * const argv[])
 341 {
 342         int ret;
 343
 344         /* find flattened device tree */
 345         ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
 346                            &images.ft_addr, &images.ft_len);
 347         if (ret) {
 348                 puts("Could not find a valid device tree\n");
 349                 return 1;
 350         }
 351
 352         set_working_fdt_addr(images.ft_addr);
 353
 354         return 0;
 355 }
 356 #endif
 357
 358 static int bootm_find_other(cmd_tbl_t *cmdtp, int flag, int argc,
 359                             char * const argv[])
 360 {
 361         if (((images.os.type == IH_TYPE_KERNEL) ||
 362              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 363              (images.os.type == IH_TYPE_MULTI)) &&
 364             (images.os.os == IH_OS_LINUX ||
 365                  images.os.os == IH_OS_VXWORKS)) {
 366                 if (bootm_find_ramdisk(flag, argc, argv))
 367                         return 1;
 368
 369 #if defined(CONFIG_OF_LIBFDT)
 370                 if (bootm_find_fdt(flag, argc, argv))
 371                         return 1;
 372 #endif
 373         }
 374
 375         return 0;
 376 }
 377
 378 #define BOOTM_ERR_RESET         -1
 379 #define BOOTM_ERR_OVERLAP       -2
 380 #define BOOTM_ERR_UNIMPLEMENTED -3
 381 static int bootm_load_os(bootm_headers_t *images, unsigned long *load_end,
 382                 int boot_progress)
 383 {
 384         image_info_t os = images->os;
 385         uint8_t comp = os.comp;
 386         ulong load = os.load;
 387         ulong blob_start = os.start;
 388         ulong blob_end = os.end;
 389         ulong image_start = os.image_start;
 390         ulong image_len = os.image_len;
 391         __maybe_unused uint unc_len = CONFIG_SYS_BOOTM_LEN;
 392         int no_overlap = 0;
 393         void *load_buf, *image_buf;
 394 #if defined(CONFIG_LZMA) || defined(CONFIG_LZO)
 395         int ret;
 396 #endif /* defined(CONFIG_LZMA) || defined(CONFIG_LZO) */
 397
 398         const char *type_name = genimg_get_type_name(os.type);
 399
 400         load_buf = map_sysmem(load, unc_len);
 401         image_buf = map_sysmem(image_start, image_len);
 402         switch (comp) {
 403         case IH_COMP_NONE:
 404                 if (load == blob_start || load == image_start) {
 405                         printf("   XIP %s ... ", type_name);
 406                         no_overlap = 1;
 407                 } else {
 408                         printf("   Loading %s ... ", type_name);
 409                         memmove_wd(load_buf, image_buf, image_len, CHUNKSZ);
 410                 }
 411                 *load_end = load + image_len;
 412                 break;
 413 #ifdef CONFIG_GZIP
 414         case IH_COMP_GZIP:
 415                 printf("   Uncompressing %s ... ", type_name);
 416                 if (gunzip(load_buf, unc_len, image_buf, &image_len) != 0) {
 417                         puts("GUNZIP: uncompress, out-of-mem or overwrite "
 418                                 "error - must RESET board to recover\n");
 419                         if (boot_progress)
 420                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 421                         return BOOTM_ERR_RESET;
 422                 }
 423
 424                 *load_end = load + image_len;
 425                 break;
 426 #endif /* CONFIG_GZIP */
 427 #ifdef CONFIG_BZIP2
 428         case IH_COMP_BZIP2:
 429                 printf("   Uncompressing %s ... ", type_name);
 430                 /*
 431                  * If we've got less than 4 MB of malloc() space,
 432                  * use slower decompression algorithm which requires
 433                  * at most 2300 KB of memory.
 434                  */
 435                 int i = BZ2_bzBuffToBuffDecompress(load_buf, &unc_len,
 436                         image_buf, image_len,
 437                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 438                 if (i != BZ_OK) {
 439                         printf("BUNZIP2: uncompress or overwrite error %d "
 440                                 "- must RESET board to recover\n", i);
 441                         if (boot_progress)
 442                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 443                         return BOOTM_ERR_RESET;
 444                 }
 445
 446                 *load_end = load + unc_len;
 447                 break;
 448 #endif /* CONFIG_BZIP2 */
 449 #ifdef CONFIG_LZMA
 450         case IH_COMP_LZMA: {
 451                 SizeT lzma_len = unc_len;
 452                 printf("   Uncompressing %s ... ", type_name);
 453
 454                 ret = lzmaBuffToBuffDecompress(load_buf, &lzma_len,
 455                                                image_buf, image_len);
 456                 unc_len = lzma_len;
 457                 if (ret != SZ_OK) {
 458                         printf("LZMA: uncompress or overwrite error %d "
 459                                 "- must RESET board to recover\n", ret);
 460                         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 461                         return BOOTM_ERR_RESET;
 462                 }
 463                 *load_end = load + unc_len;
 464                 break;
 465         }
 466 #endif /* CONFIG_LZMA */
 467 #ifdef CONFIG_LZO
 468         case IH_COMP_LZO: {
 469                 size_t size = unc_len;
 470
 471                 printf("   Uncompressing %s ... ", type_name);
 472
 473                 ret = lzop_decompress(image_buf, image_len, load_buf, &size);
 474                 if (ret != LZO_E_OK) {
 475                         printf("LZO: uncompress or overwrite error %d "
 476                               "- must RESET board to recover\n", ret);
 477                         if (boot_progress)
 478                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 479                         return BOOTM_ERR_RESET;
 480                 }
 481
 482                 *load_end = load + size;
 483                 break;
 484         }
 485 #endif /* CONFIG_LZO */
 486         default:
 487                 printf("Unimplemented compression type %d\n", comp);
 488                 return BOOTM_ERR_UNIMPLEMENTED;
 489         }
 490
 491         flush_cache(load, (*load_end - load) * sizeof(ulong));
 492
 493         puts("OK\n");
 494         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 495         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 496
 497         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
 498                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 499                         blob_start, blob_end);
 500                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 501                         *load_end);
 502
 503                 /* Check what type of image this is. */
 504                 if (images->legacy_hdr_valid) {
 505                         if (image_get_type(&images->legacy_hdr_os_copy)
 506                                         == IH_TYPE_MULTI)
 507                                 puts("WARNING: legacy format multi component image overwritten\n");
 508                         return BOOTM_ERR_OVERLAP;
 509                 } else {
 510                         puts("ERROR: new format image overwritten - must RESET the board to recover\n");
 511                         bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 512                         return BOOTM_ERR_RESET;
 513                 }
 514         }
 515
 516         return 0;
 517 }
 518
 519 static int do_bootm_standalone(int flag, int argc, char * const argv[],
 520                                bootm_headers_t *images)
 521 {
 522         char  *s;
 523         int   (*appl)(int, char * const []);
 524
 525         /* Don't start if "autostart" is set to "no" */
 526         if (((s = getenv("autostart")) != NULL) && (strcmp(s, "no") == 0)) {
 527                 setenv_hex("filesize", images->os.image_len);
 528                 return 0;
 529         }
 530         appl = (int (*)(int, char * const []))images->ep;
 531         appl(argc, argv);
 532         return 0;
 533 }
 534
 535 /* we overload the cmd field with our state machine info instead of a
 536  * function pointer */
 537 static cmd_tbl_t cmd_bootm_sub[] = {
 538         U_BOOT_CMD_MKENT(start, 0, 1, (void *)BOOTM_STATE_START, "", ""),
 539         U_BOOT_CMD_MKENT(loados, 0, 1, (void *)BOOTM_STATE_LOADOS, "", ""),
 540 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 541         U_BOOT_CMD_MKENT(ramdisk, 0, 1, (void *)BOOTM_STATE_RAMDISK, "", ""),
 542 #endif
 543 #ifdef CONFIG_OF_LIBFDT
 544         U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
 545 #endif
 546         U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
 547         U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
 548         U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
 549         U_BOOT_CMD_MKENT(fake, 0, 1, (void *)BOOTM_STATE_OS_FAKE_GO, "", ""),
 550         U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
 551 };
 552
 553 static int boot_selected_os(int argc, char * const argv[], int state,
 554                 bootm_headers_t *images, boot_os_fn *boot_fn)
 555 {
 556         arch_preboot_os();
 557         boot_fn(state, argc, argv, images);
 558
 559         /* Stand-alone may return when 'autostart' is 'no' */
 560         if (images->os.type == IH_TYPE_STANDALONE ||
 561             state == BOOTM_STATE_OS_FAKE_GO) /* We expect to return */
 562                 return 0;
 563         bootstage_error(BOOTSTAGE_ID_BOOT_OS_RETURNED);
 564 #ifdef DEBUG
 565         puts("\n## Control returned to monitor - resetting...\n");
 566 #endif
 567         return BOOTM_ERR_RESET;
 568 }
 569
 570 /**
 571  * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
 572  *
 573  * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
 574  *      enabled)
 575  */
 576 static ulong bootm_disable_interrupts(void)
 577 {
 578         ulong iflag;
 579
 580         /*
 581          * We have reached the point of no return: we are going to
 582          * overwrite all exception vector code, so we cannot easily
 583          * recover from any failures any more...
 584          */
 585         iflag = disable_interrupts();
 586 #ifdef CONFIG_NETCONSOLE
 587         /* Stop the ethernet stack if NetConsole could have left it up */
 588         eth_halt();
 589         eth_unregister(eth_get_dev());
 590 #endif
 591
 592 #if defined(CONFIG_CMD_USB)
 593         /*
 594          * turn off USB to prevent the host controller from writing to the
 595          * SDRAM while Linux is booting. This could happen (at least for OHCI
 596          * controller), because the HCCA (Host Controller Communication Area)
 597          * lies within the SDRAM and the host controller writes continously to
 598          * this area (as busmaster!). The HccaFrameNumber is for example
 599          * updated every 1 ms within the HCCA structure in SDRAM! For more
 600          * details see the OpenHCI specification.
 601          */
 602         usb_stop();
 603 #endif
 604         return iflag;
 605 }
 606
 607 /**
 608  * Execute selected states of the bootm command.
 609  *
 610  * Note the arguments to this state must be the first argument, Any 'bootm'
 611  * or sub-command arguments must have already been taken.
 612  *
 613  * Note that if states contains more than one flag it MUST contain
 614  * BOOTM_STATE_START, since this handles and consumes the command line args.
 615  *
 616  * Also note that aside from boot_os_fn functions and bootm_load_os no other
 617  * functions we store the return value of in 'ret' may use a negative return
 618  * value, without special handling.
 619  *
 620  * @param cmdtp         Pointer to bootm command table entry
 621  * @param flag          Command flags (CMD_FLAG_...)
 622  * @param argc          Number of subcommand arguments (0 = no arguments)
 623  * @param argv          Arguments
 624  * @param states        Mask containing states to run (BOOTM_STATE_...)
 625  * @param images        Image header information
 626  * @param boot_progress 1 to show boot progress, 0 to not do this
 627  * @return 0 if ok, something else on error. Some errors will cause this
 628  *      function to perform a reboot! If states contains BOOTM_STATE_OS_GO
 629  *      then the intent is to boot an OS, so this function will not return
 630  *      unless the image type is standalone.
 631  */
 632 static int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc,
 633                 char * const argv[], int states, bootm_headers_t *images,
 634                 int boot_progress)
 635 {
 636         boot_os_fn *boot_fn;
 637         ulong iflag = 0;
 638         int ret = 0, need_boot_fn;
 639
 640         images->state |= states;
 641
 642         /*
 643          * Work through the states and see how far we get. We stop on
 644          * any error.
 645          */
 646         if (states & BOOTM_STATE_START)
 647                 ret = bootm_start(cmdtp, flag, argc, argv);
 648
 649         if (!ret && (states & BOOTM_STATE_FINDOS))
 650                 ret = bootm_find_os(cmdtp, flag, argc, argv);
 651
 652         if (!ret && (states & BOOTM_STATE_FINDOTHER)) {
 653                 ret = bootm_find_other(cmdtp, flag, argc, argv);
 654                 argc = 0;       /* consume the args */
 655         }
 656
 657         /* Load the OS */
 658         if (!ret && (states & BOOTM_STATE_LOADOS)) {
 659                 ulong load_end;
 660
 661                 iflag = bootm_disable_interrupts();
 662                 ret = bootm_load_os(images, &load_end, 0);
 663                 if (ret == 0)
 664                         lmb_reserve(&images->lmb, images->os.load,
 665                                     (load_end - images->os.load));
 666                 else if (ret && ret != BOOTM_ERR_OVERLAP)
 667                         goto err;
 668                 else if (ret == BOOTM_ERR_OVERLAP)
 669                         ret = 0;
 670 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
 671                 if (images->os.os == IH_OS_LINUX)
 672                         fixup_silent_linux();
 673 #endif
 674         }
 675
 676         /* Relocate the ramdisk */
 677 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 678         if (!ret && (states & BOOTM_STATE_RAMDISK)) {
 679                 ulong rd_len = images->rd_end - images->rd_start;
 680
 681                 ret = boot_ramdisk_high(&images->lmb, images->rd_start,
 682                         rd_len, &images->initrd_start, &images->initrd_end);
 683                 if (!ret) {
 684                         setenv_hex("initrd_start", images->initrd_start);
 685                         setenv_hex("initrd_end", images->initrd_end);
 686                 }
 687         }
 688 #endif
 689 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_LMB)
 690         if (!ret && (states & BOOTM_STATE_FDT)) {
 691                 boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
 692                 ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
 693                                         &images->ft_len);
 694         }
 695 #endif
 696
 697         /* From now on, we need the OS boot function */
 698         if (ret)
 699                 return ret;
 700         boot_fn = boot_os[images->os.os];
 701         need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
 702                         BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
 703                         BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
 704         if (boot_fn == NULL && need_boot_fn) {
 705                 if (iflag)
 706                         enable_interrupts();
 707                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 708                        genimg_get_os_name(images->os.os), images->os.os);
 709                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 710                 return 1;
 711         }
 712
 713         /* Call various other states that are not generally used */
 714         if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
 715                 ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
 716         if (!ret && (states & BOOTM_STATE_OS_BD_T))
 717                 ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
 718         if (!ret && (states & BOOTM_STATE_OS_PREP))
 719                 ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
 720
 721 #ifdef CONFIG_TRACE
 722         /* Pretend to run the OS, then run a user command */
 723         if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
 724                 char *cmd_list = getenv("fakegocmd");
 725
 726                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
 727                                 images, boot_fn);
 728                 if (!ret && cmd_list)
 729                         ret = run_command_list(cmd_list, -1, flag);
 730         }
 731 #endif
 732
 733         /* Check for unsupported subcommand. */
 734         if (ret) {
 735                 puts("subcommand not supported\n");
 736                 return ret;
 737         }
 738
 739         /* Now run the OS! We hope this doesn't return */
 740         if (!ret && (states & BOOTM_STATE_OS_GO))
 741                 ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
 742                                 images, boot_fn);
 743
 744         /* Deal with any fallout */
 745 err:
 746         if (iflag)
 747                 enable_interrupts();
 748
 749         if (ret == BOOTM_ERR_UNIMPLEMENTED)
 750                 bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 751         else if (ret == BOOTM_ERR_RESET)
 752                 do_reset(cmdtp, flag, argc, argv);
 753
 754         return ret;
 755 }
 756
 757 static int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc,
 758                         char * const argv[])
 759 {
 760         int ret = 0;
 761         long state;
 762         cmd_tbl_t *c;
 763
 764         c = find_cmd_tbl(argv[0], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));
 765         argc--; argv++;
 766
 767         if (c) {
 768                 state = (long)c->cmd;
 769                 if (state == BOOTM_STATE_START)
 770                         state |= BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER;
 771         } else {
 772                 /* Unrecognized command */
 773                 return CMD_RET_USAGE;
 774         }
 775
 776         if (state != BOOTM_STATE_START && images.state >= state) {
 777                 printf("Trying to execute a command out of order\n");
 778                 return CMD_RET_USAGE;
 779         }
 780
 781         ret = do_bootm_states(cmdtp, flag, argc, argv, state, &images, 0);
 782
 783         return ret;
 784 }
 785
 786 /*******************************************************************/
 787 /* bootm - boot application image from image in memory */
 788 /*******************************************************************/
 789
 790 int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 791 {
 792 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 793         static int relocated = 0;
 794
 795         if (!relocated) {
 796                 int i;
 797
 798                 /* relocate boot function table */
 799                 for (i = 0; i < ARRAY_SIZE(boot_os); i++)
 800                         if (boot_os[i] != NULL)
 801                                 boot_os[i] += gd->reloc_off;
 802
 803                 /* relocate names of sub-command table */
 804                 for (i = 0; i < ARRAY_SIZE(cmd_bootm_sub); i++)
 805                         cmd_bootm_sub[i].name += gd->reloc_off;
 806
 807                 relocated = 1;
 808         }
 809 #endif
 810
 811         /* determine if we have a sub command */
 812         argc--; argv++;
 813         if (argc > 0) {
 814                 char *endp;
 815
 816                 simple_strtoul(argv[0], &endp, 16);
 817                 /* endp pointing to NULL means that argv[0] was just a
 818                  * valid number, pass it along to the normal bootm processing
 819                  *
 820                  * If endp is ':' or '#' assume a FIT identifier so pass
 821                  * along for normal processing.
 822                  *
 823                  * Right now we assume the first arg should never be '-'
 824                  */
 825                 if ((*endp != 0) && (*endp != ':') && (*endp != '#'))
 826                         return do_bootm_subcommand(cmdtp, flag, argc, argv);
 827         }
 828
 829         return do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START |
 830                 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER |
 831                 BOOTM_STATE_LOADOS |
 832 #if defined(CONFIG_PPC) || defined(CONFIG_MIPS)
 833                 BOOTM_STATE_OS_CMDLINE |
 834 #endif
 835                 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 836                 BOOTM_STATE_OS_GO, &images, 1);
 837 }
 838
 839 int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
 840 {
 841         const char *ep = getenv("autostart");
 842
 843         if (ep && !strcmp(ep, "yes")) {
 844                 char *local_args[2];
 845                 local_args[0] = (char *)cmd;
 846                 local_args[1] = NULL;
 847                 printf("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
 848                 return do_bootm(cmdtp, 0, 1, local_args);
 849         }
 850
 851         return 0;
 852 }
 853
 854 /**
 855  * image_get_kernel - verify legacy format kernel image
 856  * @img_addr: in RAM address of the legacy format image to be verified
 857  * @verify: data CRC verification flag
 858  *
 859  * image_get_kernel() verifies legacy image integrity and returns pointer to
 860  * legacy image header if image verification was completed successfully.
 861  *
 862  * returns:
 863  *     pointer to a legacy image header if valid image was found
 864  *     otherwise return NULL
 865  */
 866 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 867 {
 868         image_header_t *hdr = (image_header_t *)img_addr;
 869
 870         if (!image_check_magic(hdr)) {
 871                 puts("Bad Magic Number\n");
 872                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 873                 return NULL;
 874         }
 875         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 876
 877         if (!image_check_hcrc(hdr)) {
 878                 puts("Bad Header Checksum\n");
 879                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 880                 return NULL;
 881         }
 882
 883         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 884         image_print_contents(hdr);
 885
 886         if (verify) {
 887                 puts("   Verifying Checksum ... ");
 888                 if (!image_check_dcrc(hdr)) {
 889                         printf("Bad Data CRC\n");
 890                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 891                         return NULL;
 892                 }
 893                 puts("OK\n");
 894         }
 895         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 896
 897         if (!image_check_target_arch(hdr)) {
 898                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 899                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 900                 return NULL;
 901         }
 902         return hdr;
 903 }
 904
 905 /**
 906  * boot_get_kernel - find kernel image
 907  * @os_data: pointer to a ulong variable, will hold os data start address
 908  * @os_len: pointer to a ulong variable, will hold os data length
 909  *
 910  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 911  * and locates kernel data.
 912  *
 913  * returns:
 914  *     pointer to image header if valid image was found, plus kernel start
 915  *     address and length, otherwise NULL
 916  */
 917 static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 918                 char * const argv[], bootm_headers_t *images, ulong *os_data,
 919                 ulong *os_len)
 920 {
 921         image_header_t  *hdr;
 922         ulong           img_addr;
 923         const void *buf;
 924 #if defined(CONFIG_FIT)
 925         const char      *fit_uname_config = NULL;
 926         const char      *fit_uname_kernel = NULL;
 927         int             os_noffset;
 928 #endif
 929
 930         /* find out kernel image address */
 931         if (argc < 1) {
 932                 img_addr = load_addr;
 933                 debug("*  kernel: default image load address = 0x%08lx\n",
 934                                 load_addr);
 935 #if defined(CONFIG_FIT)
 936         } else if (fit_parse_conf(argv[0], load_addr, &img_addr,
 937                                                         &fit_uname_config)) {
 938                 debug("*  kernel: config '%s' from image at 0x%08lx\n",
 939                                 fit_uname_config, img_addr);
 940         } else if (fit_parse_subimage(argv[0], load_addr, &img_addr,
 941                                                         &fit_uname_kernel)) {
 942                 debug("*  kernel: subimage '%s' from image at 0x%08lx\n",
 943                                 fit_uname_kernel, img_addr);
 944 #endif
 945         } else {
 946                 img_addr = simple_strtoul(argv[0], NULL, 16);
 947                 debug("*  kernel: cmdline image address = 0x%08lx\n", img_addr);
 948         }
 949
 950         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 951
 952         /* copy from dataflash if needed */
 953         img_addr = genimg_get_image(img_addr);
 954
 955         /* check image type, for FIT images get FIT kernel node */
 956         *os_data = *os_len = 0;
 957         buf = map_sysmem(img_addr, 0);
 958         switch (genimg_get_format(buf)) {
 959         case IMAGE_FORMAT_LEGACY:
 960                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 961                                 img_addr);
 962                 hdr = image_get_kernel(img_addr, images->verify);
 963                 if (!hdr)
 964                         return NULL;
 965                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 966
 967                 /* get os_data and os_len */
 968                 switch (image_get_type(hdr)) {
 969                 case IH_TYPE_KERNEL:
 970                 case IH_TYPE_KERNEL_NOLOAD:
 971                         *os_data = image_get_data(hdr);
 972                         *os_len = image_get_data_size(hdr);
 973                         break;
 974                 case IH_TYPE_MULTI:
 975                         image_multi_getimg(hdr, 0, os_data, os_len);
 976                         break;
 977                 case IH_TYPE_STANDALONE:
 978                         *os_data = image_get_data(hdr);
 979                         *os_len = image_get_data_size(hdr);
 980                         break;
 981                 default:
 982                         printf("Wrong Image Type for %s command\n",
 983                                 cmdtp->name);
 984                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 985                         return NULL;
 986                 }
 987
 988                 /*
 989                  * copy image header to allow for image overwrites during
 990                  * kernel decompression.
 991                  */
 992                 memmove(&images->legacy_hdr_os_copy, hdr,
 993                         sizeof(image_header_t));
 994
 995                 /* save pointer to image header */
 996                 images->legacy_hdr_os = hdr;
 997
 998                 images->legacy_hdr_valid = 1;
 999                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
1000                 break;
1001 #if defined(CONFIG_FIT)
1002         case IMAGE_FORMAT_FIT:
1003                 os_noffset = fit_image_load(images, FIT_KERNEL_PROP,
1004                                 img_addr,
1005                                 &fit_uname_kernel, &fit_uname_config,
1006                                 IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
1007                                 BOOTSTAGE_ID_FIT_KERNEL_START,
1008                                 FIT_LOAD_IGNORED, os_data, os_len);
1009                 if (os_noffset < 0)
1010                         return NULL;
1011
1012                 images->fit_hdr_os = map_sysmem(img_addr, 0);
1013                 images->fit_uname_os = fit_uname_kernel;
1014                 images->fit_uname_cfg = fit_uname_config;
1015                 images->fit_noffset_os = os_noffset;
1016                 break;
1017 #endif
1018 #ifdef CONFIG_ANDROID_BOOT_IMAGE
1019         case IMAGE_FORMAT_ANDROID:
1020                 printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
1021                 if (android_image_get_kernel((void *)img_addr, images->verify,
1022                                              os_data, os_len))
1023                         return NULL;
1024                 break;
1025 #endif
1026         default:
1027                 printf("Wrong Image Format for %s command\n", cmdtp->name);
1028                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
1029                 return NULL;
1030         }
1031
1032         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
1033                         *os_data, *os_len, *os_len);
1034
1035         return buf;
1036 }
1037
1038 #ifdef CONFIG_SYS_LONGHELP
1039 static char bootm_help_text[] =
1040         "[addr [arg ...]]\n    - boot application image stored in memory\n"
1041         "\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
1042         "\t'arg' can be the address of an initrd image\n"
1043 #if defined(CONFIG_OF_LIBFDT)
1044         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
1045         "\ta third argument is required which is the address of the\n"
1046         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
1047         "\tuse a '-' for the second argument. If you do not pass a third\n"
1048         "\ta bd_info struct will be passed instead\n"
1049 #endif
1050 #if defined(CONFIG_FIT)
1051         "\t\nFor the new multi component uImage format (FIT) addresses\n"
1052         "\tmust be extened to include component or configuration unit name:\n"
1053         "\taddr:<subimg_uname> - direct component image specification\n"
1054         "\taddr#<conf_uname>   - configuration specification\n"
1055         "\tUse iminfo command to get the list of existing component\n"
1056         "\timages and configurations.\n"
1057 #endif
1058         "\nSub-commands to do part of the bootm sequence.  The sub-commands "
1059         "must be\n"
1060         "issued in the order below (it's ok to not issue all sub-commands):\n"
1061         "\tstart [addr [arg ...]]\n"
1062         "\tloados  - load OS image\n"
1063 #if defined(CONFIG_SYS_BOOT_RAMDISK_HIGH)
1064         "\tramdisk - relocate initrd, set env initrd_start/initrd_end\n"
1065 #endif
1066 #if defined(CONFIG_OF_LIBFDT)
1067         "\tfdt     - relocate flat device tree\n"
1068 #endif
1069         "\tcmdline - OS specific command line processing/setup\n"
1070         "\tbdt     - OS specific bd_t processing\n"
1071         "\tprep    - OS specific prep before relocation or go\n"
1072         "\tgo      - start OS";
1073 #endif
1074
1075 U_BOOT_CMD(
1076         bootm,  CONFIG_SYS_MAXARGS,     1,      do_bootm,
1077         "boot application image from memory", bootm_help_text
1078 );
1079
1080 /*******************************************************************/
1081 /* bootd - boot default image */
1082 /*******************************************************************/
1083 #if defined(CONFIG_CMD_BOOTD)
1084 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1085 {
1086         int rcode = 0;
1087
1088         if (run_command(getenv("bootcmd"), flag) < 0)
1089                 rcode = 1;
1090         return rcode;
1091 }
1092
1093 U_BOOT_CMD(
1094         boot,   1,      1,      do_bootd,
1095         "boot default, i.e., run 'bootcmd'",
1096         ""
1097 );
1098
1099 /* keep old command name "bootd" for backward compatibility */
1100 U_BOOT_CMD(
1101         bootd, 1,       1,      do_bootd,
1102         "boot default, i.e., run 'bootcmd'",
1103         ""
1104 );
1105
1106 #endif
1107
1108
1109 /*******************************************************************/
1110 /* iminfo - print header info for a requested image */
1111 /*******************************************************************/
1112 #if defined(CONFIG_CMD_IMI)
1113 static int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1114 {
1115         int     arg;
1116         ulong   addr;
1117         int     rcode = 0;
1118
1119         if (argc < 2) {
1120                 return image_info(load_addr);
1121         }
1122
1123         for (arg = 1; arg < argc; ++arg) {
1124                 addr = simple_strtoul(argv[arg], NULL, 16);
1125                 if (image_info(addr) != 0)
1126                         rcode = 1;
1127         }
1128         return rcode;
1129 }
1130
1131 static int image_info(ulong addr)
1132 {
1133         void *hdr = (void *)addr;
1134
1135         printf("\n## Checking Image at %08lx ...\n", addr);
1136
1137         switch (genimg_get_format(hdr)) {
1138         case IMAGE_FORMAT_LEGACY:
1139                 puts("   Legacy image found\n");
1140                 if (!image_check_magic(hdr)) {
1141                         puts("   Bad Magic Number\n");
1142                         return 1;
1143                 }
1144
1145                 if (!image_check_hcrc(hdr)) {
1146                         puts("   Bad Header Checksum\n");
1147                         return 1;
1148                 }
1149
1150                 image_print_contents(hdr);
1151
1152                 puts("   Verifying Checksum ... ");
1153                 if (!image_check_dcrc(hdr)) {
1154                         puts("   Bad Data CRC\n");
1155                         return 1;
1156                 }
1157                 puts("OK\n");
1158                 return 0;
1159 #if defined(CONFIG_FIT)
1160         case IMAGE_FORMAT_FIT:
1161                 puts("   FIT image found\n");
1162
1163                 if (!fit_check_format(hdr)) {
1164                         puts("Bad FIT image format!\n");
1165                         return 1;
1166                 }
1167
1168                 fit_print_contents(hdr);
1169
1170                 if (!fit_all_image_verify(hdr)) {
1171                         puts("Bad hash in FIT image!\n");
1172                         return 1;
1173                 }
1174
1175                 return 0;
1176 #endif
1177         default:
1178                 puts("Unknown image format!\n");
1179                 break;
1180         }
1181
1182         return 1;
1183 }
1184
1185 U_BOOT_CMD(
1186         iminfo, CONFIG_SYS_MAXARGS,     1,      do_iminfo,
1187         "print header information for application image",
1188         "addr [addr ...]\n"
1189         "    - print header information for application image starting at\n"
1190         "      address 'addr' in memory; this includes verification of the\n"
1191         "      image contents (magic number, header and payload checksums)"
1192 );
1193 #endif
1194
1195
1196 /*******************************************************************/
1197 /* imls - list all images found in flash */
1198 /*******************************************************************/
1199 #if defined(CONFIG_CMD_IMLS)
1200 static int do_imls_nor(void)
1201 {
1202         flash_info_t *info;
1203         int i, j;
1204         void *hdr;
1205
1206         for (i = 0, info = &flash_info[0];
1207                 i < CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
1208
1209                 if (info->flash_id == FLASH_UNKNOWN)
1210                         goto next_bank;
1211                 for (j = 0; j < info->sector_count; ++j) {
1212
1213                         hdr = (void *)info->start[j];
1214                         if (!hdr)
1215                                 goto next_sector;
1216
1217                         switch (genimg_get_format(hdr)) {
1218                         case IMAGE_FORMAT_LEGACY:
1219                                 if (!image_check_hcrc(hdr))
1220                                         goto next_sector;
1221
1222                                 printf("Legacy Image at %08lX:\n", (ulong)hdr);
1223                                 image_print_contents(hdr);
1224
1225                                 puts("   Verifying Checksum ... ");
1226                                 if (!image_check_dcrc(hdr)) {
1227                                         puts("Bad Data CRC\n");
1228                                 } else {
1229                                         puts("OK\n");
1230                                 }
1231                                 break;
1232 #if defined(CONFIG_FIT)
1233                         case IMAGE_FORMAT_FIT:
1234                                 if (!fit_check_format(hdr))
1235                                         goto next_sector;
1236
1237                                 printf("FIT Image at %08lX:\n", (ulong)hdr);
1238                                 fit_print_contents(hdr);
1239                                 break;
1240 #endif
1241                         default:
1242                                 goto next_sector;
1243                         }
1244
1245 next_sector:            ;
1246                 }
1247 next_bank:      ;
1248         }
1249         return 0;
1250 }
1251 #endif
1252
1253 #if defined(CONFIG_CMD_IMLS_NAND)
1254 static int nand_imls_legacyimage(nand_info_t *nand, int nand_dev, loff_t off,
1255                 size_t len)
1256 {
1257         void *imgdata;
1258         int ret;
1259
1260         imgdata = malloc(len);
1261         if (!imgdata) {
1262                 printf("May be a Legacy Image at NAND device %d offset %08llX:\n",
1263                                 nand_dev, off);
1264                 printf("   Low memory(cannot allocate memory for image)\n");
1265                 return -ENOMEM;
1266         }
1267
1268         ret = nand_read_skip_bad(nand, off, &len,
1269                         imgdata);
1270         if (ret < 0 && ret != -EUCLEAN) {
1271                 free(imgdata);
1272                 return ret;
1273         }
1274
1275         if (!image_check_hcrc(imgdata)) {
1276                 free(imgdata);
1277                 return 0;
1278         }
1279
1280         printf("Legacy Image at NAND device %d offset %08llX:\n",
1281                         nand_dev, off);
1282         image_print_contents(imgdata);
1283
1284         puts("   Verifying Checksum ... ");
1285         if (!image_check_dcrc(imgdata))
1286                 puts("Bad Data CRC\n");
1287         else
1288                 puts("OK\n");
1289
1290         free(imgdata);
1291
1292         return 0;
1293 }
1294
1295 static int nand_imls_fitimage(nand_info_t *nand, int nand_dev, loff_t off,
1296                 size_t len)
1297 {
1298         void *imgdata;
1299         int ret;
1300
1301         imgdata = malloc(len);
1302         if (!imgdata) {
1303                 printf("May be a FIT Image at NAND device %d offset %08llX:\n",
1304                                 nand_dev, off);
1305                 printf("   Low memory(cannot allocate memory for image)\n");
1306                 return -ENOMEM;
1307         }
1308
1309         ret = nand_read_skip_bad(nand, off, &len,
1310                         imgdata);
1311         if (ret < 0 && ret != -EUCLEAN) {
1312                 free(imgdata);
1313                 return ret;
1314         }
1315
1316         if (!fit_check_format(imgdata)) {
1317                 free(imgdata);
1318                 return 0;
1319         }
1320
1321         printf("FIT Image at NAND device %d offset %08llX:\n", nand_dev, off);
1322
1323         fit_print_contents(imgdata);
1324         free(imgdata);
1325
1326         return 0;
1327 }
1328
1329 static int do_imls_nand(void)
1330 {
1331         nand_info_t *nand;
1332         int nand_dev = nand_curr_device;
1333         size_t len;
1334         loff_t off;
1335         u32 buffer[16];
1336
1337         if (nand_dev < 0 || nand_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
1338                 puts("\nNo NAND devices available\n");
1339                 return -ENODEV;
1340         }
1341
1342         printf("\n");
1343
1344         for (nand_dev = 0; nand_dev < CONFIG_SYS_MAX_NAND_DEVICE; nand_dev++) {
1345                 nand = &nand_info[nand_dev];
1346                 if (!nand->name || !nand->size)
1347                         continue;
1348
1349                 for (off = 0; off < nand->size; off += nand->erasesize) {
1350                         const image_header_t *header;
1351                         int ret;
1352
1353                         if (nand_block_isbad(nand, off))
1354                                 continue;
1355
1356                         len = sizeof(buffer);
1357
1358                         ret = nand_read(nand, off, &len, (u8 *)buffer);
1359                         if (ret < 0 && ret != -EUCLEAN) {
1360                                 printf("NAND read error %d at offset %08llX\n",
1361                                                 ret, off);
1362                                 continue;
1363                         }
1364
1365                         switch (genimg_get_format(buffer)) {
1366                         case IMAGE_FORMAT_LEGACY:
1367                                 header = (const image_header_t *)buffer;
1368
1369                                 len = image_get_image_size(header);
1370                                 nand_imls_legacyimage(nand, nand_dev, off, len);
1371                                 break;
1372 #if defined(CONFIG_FIT)
1373                         case IMAGE_FORMAT_FIT:
1374                                 len = fit_get_size(buffer);
1375                                 nand_imls_fitimage(nand, nand_dev, off, len);
1376                                 break;
1377 #endif
1378                         }
1379                 }
1380         }
1381
1382         return 0;
1383 }
1384 #endif
1385
1386 #if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
1387 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1388 {
1389         int ret_nor = 0, ret_nand = 0;
1390
1391 #if defined(CONFIG_CMD_IMLS)
1392         ret_nor = do_imls_nor();
1393 #endif
1394
1395 #if defined(CONFIG_CMD_IMLS_NAND)
1396         ret_nand = do_imls_nand();
1397 #endif
1398
1399         if (ret_nor)
1400                 return ret_nor;
1401
1402         if (ret_nand)
1403                 return ret_nand;
1404
1405         return (0);
1406 }
1407
1408 U_BOOT_CMD(
1409         imls,   1,              1,      do_imls,
1410         "list all images found in flash",
1411         "\n"
1412         "    - Prints information about all images found at sector/block\n"
1413         "      boundaries in nor/nand flash."
1414 );
1415 #endif
1416
1417 /*******************************************************************/
1418 /* helper routines */
1419 /*******************************************************************/
1420 #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
1421
1422 #define CONSOLE_ARG     "console="
1423 #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
1424
1425 static void fixup_silent_linux(void)
1426 {
1427         char *buf;
1428         const char *env_val;
1429         char *cmdline = getenv("bootargs");
1430         int want_silent;
1431
1432         /*
1433          * Only fix cmdline when requested. The environment variable can be:
1434          *
1435          *      no - we never fixup
1436          *      yes - we always fixup
1437          *      unset - we rely on the console silent flag
1438          */
1439         want_silent = getenv_yesno("silent_linux");
1440         if (want_silent == 0)
1441                 return;
1442         else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
1443                 return;
1444
1445         debug("before silent fix-up: %s\n", cmdline);
1446         if (cmdline && (cmdline[0] != '\0')) {
1447                 char *start = strstr(cmdline, CONSOLE_ARG);
1448
1449                 /* Allocate space for maximum possible new command line */
1450                 buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
1451                 if (!buf) {
1452                         debug("%s: out of memory\n", __func__);
1453                         return;
1454                 }
1455
1456                 if (start) {
1457                         char *end = strchr(start, ' ');
1458                         int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
1459
1460                         strncpy(buf, cmdline, num_start_bytes);
1461                         if (end)
1462                                 strcpy(buf + num_start_bytes, end);
1463                         else
1464                                 buf[num_start_bytes] = '\0';
1465                 } else {
1466                         sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
1467                 }
1468                 env_val = buf;
1469         } else {
1470                 buf = NULL;
1471                 env_val = CONSOLE_ARG;
1472         }
1473
1474         setenv("bootargs", env_val);
1475         debug("after silent fix-up: %s\n", env_val);
1476         free(buf);
1477 }
1478 #endif /* CONFIG_SILENT_CONSOLE */
1479
1480 #if defined(CONFIG_BOOTM_NETBSD) || defined(CONFIG_BOOTM_PLAN9)
1481 static void copy_args(char *dest, int argc, char * const argv[], char delim)
1482 {
1483         int i;
1484
1485         for (i = 0; i < argc; i++) {
1486                 if (i > 0)
1487                         *dest++ = delim;
1488                 strcpy(dest, argv[i]);
1489                 dest += strlen(argv[i]);
1490         }
1491 }
1492 #endif
1493
1494 /*******************************************************************/
1495 /* OS booting routines */
1496 /*******************************************************************/
1497
1498 #ifdef CONFIG_BOOTM_NETBSD
1499 static int do_bootm_netbsd(int flag, int argc, char * const argv[],
1500                             bootm_headers_t *images)
1501 {
1502         void (*loader)(bd_t *, image_header_t *, char *, char *);
1503         image_header_t *os_hdr, *hdr;
1504         ulong kernel_data, kernel_len;
1505         char *consdev;
1506         char *cmdline;
1507
1508         if (flag != BOOTM_STATE_OS_GO)
1509                 return 0;
1510
1511 #if defined(CONFIG_FIT)
1512         if (!images->legacy_hdr_valid) {
1513                 fit_unsupported_reset("NetBSD");
1514                 return 1;
1515         }
1516 #endif
1517         hdr = images->legacy_hdr_os;
1518
1519         /*
1520          * Booting a (NetBSD) kernel image
1521          *
1522          * This process is pretty similar to a standalone application:
1523          * The (first part of an multi-) image must be a stage-2 loader,
1524          * which in turn is responsible for loading & invoking the actual
1525          * kernel.  The only differences are the parameters being passed:
1526          * besides the board info strucure, the loader expects a command
1527          * line, the name of the console device, and (optionally) the
1528          * address of the original image header.
1529          */
1530         os_hdr = NULL;
1531         if (image_check_type(&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
1532                 image_multi_getimg(hdr, 1, &kernel_data, &kernel_len);
1533                 if (kernel_len)
1534                         os_hdr = hdr;
1535         }
1536
1537         consdev = "";
1538 #if   defined(CONFIG_8xx_CONS_SMC1)
1539         consdev = "smc1";
1540 #elif defined(CONFIG_8xx_CONS_SMC2)
1541         consdev = "smc2";
1542 #elif defined(CONFIG_8xx_CONS_SCC2)
1543         consdev = "scc2";
1544 #elif defined(CONFIG_8xx_CONS_SCC3)
1545         consdev = "scc3";
1546 #endif
1547
1548         if (argc > 0) {
1549                 ulong len;
1550                 int   i;
1551
1552                 for (i = 0, len = 0; i < argc; i += 1)
1553                         len += strlen(argv[i]) + 1;
1554                 cmdline = malloc(len);
1555                 copy_args(cmdline, argc, argv, ' ');
1556         } else if ((cmdline = getenv("bootargs")) == NULL) {
1557                 cmdline = "";
1558         }
1559
1560         loader = (void (*)(bd_t *, image_header_t *, char *, char *))images->ep;
1561
1562         printf("## Transferring control to NetBSD stage-2 loader "
1563                 "(at address %08lx) ...\n",
1564                 (ulong)loader);
1565
1566         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1567
1568         /*
1569          * NetBSD Stage-2 Loader Parameters:
1570          *   arg[0]: pointer to board info data
1571          *   arg[1]: image load address
1572          *   arg[2]: char pointer to the console device to use
1573          *   arg[3]: char pointer to the boot arguments
1574          */
1575         (*loader)(gd->bd, os_hdr, consdev, cmdline);
1576
1577         return 1;
1578 }
1579 #endif /* CONFIG_BOOTM_NETBSD*/
1580
1581 #ifdef CONFIG_LYNXKDI
1582 static int do_bootm_lynxkdi(int flag, int argc, char * const argv[],
1583                              bootm_headers_t *images)
1584 {
1585         image_header_t *hdr = &images->legacy_hdr_os_copy;
1586
1587         if (flag != BOOTM_STATE_OS_GO)
1588                 return 0;
1589
1590 #if defined(CONFIG_FIT)
1591         if (!images->legacy_hdr_valid) {
1592                 fit_unsupported_reset("Lynx");
1593                 return 1;
1594         }
1595 #endif
1596
1597         lynxkdi_boot((image_header_t *)hdr);
1598
1599         return 1;
1600 }
1601 #endif /* CONFIG_LYNXKDI */
1602
1603 #ifdef CONFIG_BOOTM_RTEMS
1604 static int do_bootm_rtems(int flag, int argc, char * const argv[],
1605                            bootm_headers_t *images)
1606 {
1607         void (*entry_point)(bd_t *);
1608
1609         if (flag != BOOTM_STATE_OS_GO)
1610                 return 0;
1611
1612 #if defined(CONFIG_FIT)
1613         if (!images->legacy_hdr_valid) {
1614                 fit_unsupported_reset("RTEMS");
1615                 return 1;
1616         }
1617 #endif
1618
1619         entry_point = (void (*)(bd_t *))images->ep;
1620
1621         printf("## Transferring control to RTEMS (at address %08lx) ...\n",
1622                 (ulong)entry_point);
1623
1624         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1625
1626         /*
1627          * RTEMS Parameters:
1628          *   r3: ptr to board info data
1629          */
1630         (*entry_point)(gd->bd);
1631
1632         return 1;
1633 }
1634 #endif /* CONFIG_BOOTM_RTEMS */
1635
1636 #if defined(CONFIG_BOOTM_OSE)
1637 static int do_bootm_ose(int flag, int argc, char * const argv[],
1638                            bootm_headers_t *images)
1639 {
1640         void (*entry_point)(void);
1641
1642         if (flag != BOOTM_STATE_OS_GO)
1643                 return 0;
1644
1645 #if defined(CONFIG_FIT)
1646         if (!images->legacy_hdr_valid) {
1647                 fit_unsupported_reset("OSE");
1648                 return 1;
1649         }
1650 #endif
1651
1652         entry_point = (void (*)(void))images->ep;
1653
1654         printf("## Transferring control to OSE (at address %08lx) ...\n",
1655                 (ulong)entry_point);
1656
1657         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1658
1659         /*
1660          * OSE Parameters:
1661          *   None
1662          */
1663         (*entry_point)();
1664
1665         return 1;
1666 }
1667 #endif /* CONFIG_BOOTM_OSE */
1668
1669 #if defined(CONFIG_BOOTM_PLAN9)
1670 static int do_bootm_plan9(int flag, int argc, char * const argv[],
1671                            bootm_headers_t *images)
1672 {
1673         void (*entry_point)(void);
1674         char *s;
1675
1676         if (flag != BOOTM_STATE_OS_GO)
1677                 return 0;
1678
1679 #if defined(CONFIG_FIT)
1680         if (!images->legacy_hdr_valid) {
1681                 fit_unsupported_reset("Plan 9");
1682                 return 1;
1683         }
1684 #endif
1685
1686         /* See README.plan9 */
1687         s = getenv("confaddr");
1688         if (s != NULL) {
1689                 char *confaddr = (char *)simple_strtoul(s, NULL, 16);
1690
1691                 if (argc > 0) {
1692                         copy_args(confaddr, argc, argv, '\n');
1693                 } else {
1694                         s = getenv("bootargs");
1695                         if (s != NULL)
1696                                 strcpy(confaddr, s);
1697                 }
1698         }
1699
1700         entry_point = (void (*)(void))images->ep;
1701
1702         printf("## Transferring control to Plan 9 (at address %08lx) ...\n",
1703                 (ulong)entry_point);
1704
1705         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1706
1707         /*
1708          * Plan 9 Parameters:
1709          *   None
1710          */
1711         (*entry_point)();
1712
1713         return 1;
1714 }
1715 #endif /* CONFIG_BOOTM_PLAN9 */
1716
1717 #if defined(CONFIG_BOOTM_VXWORKS) && \
1718         (defined(CONFIG_PPC) || defined(CONFIG_ARM))
1719
1720 void do_bootvx_fdt(bootm_headers_t *images)
1721 {
1722 #if defined(CONFIG_OF_LIBFDT)
1723         int ret;
1724         char *bootline;
1725         ulong of_size = images->ft_len;
1726         char **of_flat_tree = &images->ft_addr;
1727         struct lmb *lmb = &images->lmb;
1728
1729         if (*of_flat_tree) {
1730                 boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
1731
1732                 ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
1733                 if (ret)
1734                         return;
1735
1736                 ret = fdt_add_subnode(*of_flat_tree, 0, "chosen");
1737                 if ((ret >= 0 || ret == -FDT_ERR_EXISTS)) {
1738                         bootline = getenv("bootargs");
1739                         if (bootline) {
1740                                 ret = fdt_find_and_setprop(*of_flat_tree,
1741                                                 "/chosen", "bootargs",
1742                                                 bootline,
1743                                                 strlen(bootline) + 1, 1);
1744                                 if (ret < 0) {
1745                                         printf("## ERROR: %s : %s\n", __func__,
1746                                                fdt_strerror(ret));
1747                                         return;
1748                                 }
1749                         }
1750                 } else {
1751                         printf("## ERROR: %s : %s\n", __func__,
1752                                fdt_strerror(ret));
1753                         return;
1754                 }
1755         }
1756 #endif
1757
1758         boot_prep_vxworks(images);
1759
1760         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1761
1762 #if defined(CONFIG_OF_LIBFDT)
1763         printf("## Starting vxWorks at 0x%08lx, device tree at 0x%08lx ...\n",
1764                (ulong)images->ep, (ulong)*of_flat_tree);
1765 #else
1766         printf("## Starting vxWorks at 0x%08lx\n", (ulong)images->ep);
1767 #endif
1768
1769         boot_jump_vxworks(images);
1770
1771         puts("## vxWorks terminated\n");
1772 }
1773
1774 static int do_bootm_vxworks(int flag, int argc, char * const argv[],
1775                              bootm_headers_t *images)
1776 {
1777         if (flag != BOOTM_STATE_OS_GO)
1778                 return 0;
1779
1780 #if defined(CONFIG_FIT)
1781         if (!images->legacy_hdr_valid) {
1782                 fit_unsupported_reset("VxWorks");
1783                 return 1;
1784         }
1785 #endif
1786
1787         do_bootvx_fdt(images);
1788
1789         return 1;
1790 }
1791 #endif
1792
1793 #if defined(CONFIG_CMD_ELF)
1794 static int do_bootm_qnxelf(int flag, int argc, char * const argv[],
1795                             bootm_headers_t *images)
1796 {
1797         char *local_args[2];
1798         char str[16];
1799
1800         if (flag != BOOTM_STATE_OS_GO)
1801                 return 0;
1802
1803 #if defined(CONFIG_FIT)
1804         if (!images->legacy_hdr_valid) {
1805                 fit_unsupported_reset("QNX");
1806                 return 1;
1807         }
1808 #endif
1809
1810         sprintf(str, "%lx", images->ep); /* write entry-point into string */
1811         local_args[0] = argv[0];
1812         local_args[1] = str;    /* and provide it via the arguments */
1813         do_bootelf(NULL, 0, 2, local_args);
1814
1815         return 1;
1816 }
1817 #endif
1818
1819 #ifdef CONFIG_INTEGRITY
1820 static int do_bootm_integrity(int flag, int argc, char * const argv[],
1821                            bootm_headers_t *images)
1822 {
1823         void (*entry_point)(void);
1824
1825         if (flag != BOOTM_STATE_OS_GO)
1826                 return 0;
1827
1828 #if defined(CONFIG_FIT)
1829         if (!images->legacy_hdr_valid) {
1830                 fit_unsupported_reset("INTEGRITY");
1831                 return 1;
1832         }
1833 #endif
1834
1835         entry_point = (void (*)(void))images->ep;
1836
1837         printf("## Transferring control to INTEGRITY (at address %08lx) ...\n",
1838                 (ulong)entry_point);
1839
1840         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1841
1842         /*
1843          * INTEGRITY Parameters:
1844          *   None
1845          */
1846         (*entry_point)();
1847
1848         return 1;
1849 }
1850 #endif
1851
1852 #ifdef CONFIG_CMD_BOOTZ
1853
1854 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
1855 {
1856         /* Please define bootz_setup() for your platform */
1857
1858         puts("Your platform's zImage format isn't supported yet!\n");
1859         return -1;
1860 }
1861
1862 /*
1863  * zImage booting support
1864  */
1865 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
1866                         char * const argv[], bootm_headers_t *images)
1867 {
1868         int ret;
1869         ulong zi_start, zi_end;
1870
1871         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
1872                               images, 1);
1873
1874         /* Setup Linux kernel zImage entry point */
1875         if (!argc) {
1876                 images->ep = load_addr;
1877                 debug("*  kernel: default image load address = 0x%08lx\n",
1878                                 load_addr);
1879         } else {
1880                 images->ep = simple_strtoul(argv[0], NULL, 16);
1881                 debug("*  kernel: cmdline image address = 0x%08lx\n",
1882                         images->ep);
1883         }
1884
1885         ret = bootz_setup(images->ep, &zi_start, &zi_end);
1886         if (ret != 0)
1887                 return 1;
1888
1889         lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
1890
1891         /*
1892          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
1893          * have a header that provide this informaiton.
1894          */
1895         if (bootm_find_ramdisk(flag, argc, argv))
1896                 return 1;
1897
1898 #if defined(CONFIG_OF_LIBFDT)
1899         if (bootm_find_fdt(flag, argc, argv))
1900                 return 1;
1901 #endif
1902
1903         return 0;
1904 }
1905
1906 int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1907 {
1908         int ret;
1909
1910         /* Consume 'bootz' */
1911         argc--; argv++;
1912
1913         if (bootz_start(cmdtp, flag, argc, argv, &images))
1914                 return 1;
1915
1916         /*
1917          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
1918          * disable interrupts ourselves
1919          */
1920         bootm_disable_interrupts();
1921
1922         images.os.os = IH_OS_LINUX;
1923         ret = do_bootm_states(cmdtp, flag, argc, argv,
1924                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
1925                               BOOTM_STATE_OS_GO,
1926                               &images, 1);
1927
1928         return ret;
1929 }
1930
1931 #ifdef CONFIG_SYS_LONGHELP
1932 static char bootz_help_text[] =
1933         "[addr [initrd[:size]] [fdt]]\n"
1934         "    - boot Linux zImage stored in memory\n"
1935         "\tThe argument 'initrd' is optional and specifies the address\n"
1936         "\tof the initrd in memory. The optional argument ':size' allows\n"
1937         "\tspecifying the size of RAW initrd.\n"
1938 #if defined(CONFIG_OF_LIBFDT)
1939         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
1940         "\ta third argument is required which is the address of the\n"
1941         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
1942         "\tuse a '-' for the second argument. If you do not pass a third\n"
1943         "\ta bd_info struct will be passed instead\n"
1944 #endif
1945         "";
1946 #endif
1947
1948 U_BOOT_CMD(
1949         bootz,  CONFIG_SYS_MAXARGS,     1,      do_bootz,
1950         "boot Linux zImage image from memory", bootz_help_text
1951 );
1952 #endif  /* CONFIG_CMD_BOOTZ */