common/cmd_bootm.c

   1 /*
   2  * (C) Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24
  25 /*
  26  * Boot support
  27  */
  28 #include <common.h>
  29 #include <watchdog.h>
  30 #include <command.h>
  31 #include <image.h>
  32 #include <malloc.h>
  33 #include <u-boot/zlib.h>
  34 #include <bzlib.h>
  35 #include <environment.h>
  36 #include <lmb.h>
  37 #include <linux/ctype.h>
  38 #include <asm/byteorder.h>
  39 #include <linux/compiler.h>
  40
  41 #if defined(CONFIG_CMD_USB)
  42 #include <usb.h>
  43 #endif
  44
  45 #ifdef CONFIG_SYS_HUSH_PARSER
  46 #include <hush.h>
  47 #endif
  48
  49 #if defined(CONFIG_OF_LIBFDT)
  50 #include <fdt.h>
  51 #include <libfdt.h>
  52 #include <fdt_support.h>
  53 #endif
  54
  55 #ifdef CONFIG_LZMA
  56 #include <lzma/LzmaTypes.h>
  57 #include <lzma/LzmaDec.h>
  58 #include <lzma/LzmaTools.h>
  59 #endif /* CONFIG_LZMA */
  60
  61 #ifdef CONFIG_LZO
  62 #include <linux/lzo.h>
  63 #endif /* CONFIG_LZO */
  64
  65 DECLARE_GLOBAL_DATA_PTR;
  66
  67 #ifndef CONFIG_SYS_BOOTM_LEN
  68 #define CONFIG_SYS_BOOTM_LEN    0x800000        /* use 8MByte as default max gunzip size */
  69 #endif
  70
  71 #ifdef CONFIG_BZIP2
  72 extern void bz_internal_error(int);
  73 #endif
  74
  75 #if defined(CONFIG_CMD_IMI)
  76 static int image_info(unsigned long addr);
  77 #endif
  78
  79 #if defined(CONFIG_CMD_IMLS)
  80 #include <flash.h>
  81 #include <mtd/cfi_flash.h>
  82 extern flash_info_t flash_info[]; /* info for FLASH chips */
  83 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  84 #endif
  85
  86 #ifdef CONFIG_SILENT_CONSOLE
  87 static void fixup_silent_linux(void);
  88 #endif
  89
  90 static image_header_t *image_get_kernel(ulong img_addr, int verify);
  91 #if defined(CONFIG_FIT)
  92 static int fit_check_kernel(const void *fit, int os_noffset, int verify);
  93 #endif
  94
  95 static void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
  96                                 char * const argv[], bootm_headers_t *images,
  97                                 ulong *os_data, ulong *os_len);
  98
  99 /*
 100  *  Continue booting an OS image; caller already has:
 101  *  - copied image header to global variable `header'
 102  *  - checked header magic number, checksums (both header & image),
 103  *  - verified image architecture (PPC) and type (KERNEL or MULTI),
 104  *  - loaded (first part of) image to header load address,
 105  *  - disabled interrupts.
 106  */
 107 typedef int boot_os_fn(int flag, int argc, char * const argv[],
 108                         bootm_headers_t *images); /* pointers to os/initrd/fdt */
 109
 110 #ifdef CONFIG_BOOTM_LINUX
 111 extern boot_os_fn do_bootm_linux;
 112 #endif
 113 #ifdef CONFIG_BOOTM_NETBSD
 114 static boot_os_fn do_bootm_netbsd;
 115 #endif
 116 #if defined(CONFIG_LYNXKDI)
 117 static boot_os_fn do_bootm_lynxkdi;
 118 extern void lynxkdi_boot(image_header_t *);
 119 #endif
 120 #ifdef CONFIG_BOOTM_RTEMS
 121 static boot_os_fn do_bootm_rtems;
 122 #endif
 123 #if defined(CONFIG_BOOTM_OSE)
 124 static boot_os_fn do_bootm_ose;
 125 #endif
 126 #if defined(CONFIG_CMD_ELF)
 127 static boot_os_fn do_bootm_vxworks;
 128 static boot_os_fn do_bootm_qnxelf;
 129 int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 130 int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 131 #endif
 132 #if defined(CONFIG_INTEGRITY)
 133 static boot_os_fn do_bootm_integrity;
 134 #endif
 135
 136 static boot_os_fn *boot_os[] = {
 137 #ifdef CONFIG_BOOTM_LINUX
 138         [IH_OS_LINUX] = do_bootm_linux,
 139 #endif
 140 #ifdef CONFIG_BOOTM_NETBSD
 141         [IH_OS_NETBSD] = do_bootm_netbsd,
 142 #endif
 143 #ifdef CONFIG_LYNXKDI
 144         [IH_OS_LYNXOS] = do_bootm_lynxkdi,
 145 #endif
 146 #ifdef CONFIG_BOOTM_RTEMS
 147         [IH_OS_RTEMS] = do_bootm_rtems,
 148 #endif
 149 #if defined(CONFIG_BOOTM_OSE)
 150         [IH_OS_OSE] = do_bootm_ose,
 151 #endif
 152 #if defined(CONFIG_CMD_ELF)
 153         [IH_OS_VXWORKS] = do_bootm_vxworks,
 154         [IH_OS_QNX] = do_bootm_qnxelf,
 155 #endif
 156 #ifdef CONFIG_INTEGRITY
 157         [IH_OS_INTEGRITY] = do_bootm_integrity,
 158 #endif
 159 };
 160
 161 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
 162
 163 /* Allow for arch specific config before we boot */
 164 void __arch_preboot_os(void)
 165 {
 166         /* please define platform specific arch_preboot_os() */
 167 }
 168 void arch_preboot_os(void) __attribute__((weak, alias("__arch_preboot_os")));
 169
 170 #define IH_INITRD_ARCH IH_ARCH_DEFAULT
 171
 172 #ifdef CONFIG_LMB
 173 static void boot_start_lmb(bootm_headers_t *images)
 174 {
 175         ulong           mem_start;
 176         phys_size_t     mem_size;
 177
 178         lmb_init(&images->lmb);
 179
 180         mem_start = getenv_bootm_low();
 181         mem_size = getenv_bootm_size();
 182
 183         lmb_add(&images->lmb, (phys_addr_t)mem_start, mem_size);
 184
 185         arch_lmb_reserve(&images->lmb);
 186         board_lmb_reserve(&images->lmb);
 187 }
 188 #else
 189 #define lmb_reserve(lmb, base, size)
 190 static inline void boot_start_lmb(bootm_headers_t *images) { }
 191 #endif
 192
 193 static int bootm_start(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 194 {
 195         void            *os_hdr;
 196         int             ret;
 197
 198         memset((void *)&images, 0, sizeof(images));
 199         images.verify = getenv_yesno("verify");
 200
 201         boot_start_lmb(&images);
 202
 203         bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
 204
 205         /* get kernel image header, start address and length */
 206         os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
 207                         &images, &images.os.image_start, &images.os.image_len);
 208         if (images.os.image_len == 0) {
 209                 puts("ERROR: can't get kernel image!\n");
 210                 return 1;
 211         }
 212
 213         /* get image parameters */
 214         switch (genimg_get_format(os_hdr)) {
 215         case IMAGE_FORMAT_LEGACY:
 216                 images.os.type = image_get_type(os_hdr);
 217                 images.os.comp = image_get_comp(os_hdr);
 218                 images.os.os = image_get_os(os_hdr);
 219
 220                 images.os.end = image_get_image_end(os_hdr);
 221                 images.os.load = image_get_load(os_hdr);
 222                 break;
 223 #if defined(CONFIG_FIT)
 224         case IMAGE_FORMAT_FIT:
 225                 if (fit_image_get_type(images.fit_hdr_os,
 226                                         images.fit_noffset_os, &images.os.type)) {
 227                         puts("Can't get image type!\n");
 228                         bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
 229                         return 1;
 230                 }
 231
 232                 if (fit_image_get_comp(images.fit_hdr_os,
 233                                         images.fit_noffset_os, &images.os.comp)) {
 234                         puts("Can't get image compression!\n");
 235                         bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
 236                         return 1;
 237                 }
 238
 239                 if (fit_image_get_os(images.fit_hdr_os,
 240                                         images.fit_noffset_os, &images.os.os)) {
 241                         puts("Can't get image OS!\n");
 242                         bootstage_error(BOOTSTAGE_ID_FIT_OS);
 243                         return 1;
 244                 }
 245
 246                 images.os.end = fit_get_end(images.fit_hdr_os);
 247
 248                 if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
 249                                         &images.os.load)) {
 250                         puts("Can't get image load address!\n");
 251                         bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
 252                         return 1;
 253                 }
 254                 break;
 255 #endif
 256         default:
 257                 puts("ERROR: unknown image format type!\n");
 258                 return 1;
 259         }
 260
 261         /* find kernel entry point */
 262         if (images.legacy_hdr_valid) {
 263                 images.ep = image_get_ep(&images.legacy_hdr_os_copy);
 264 #if defined(CONFIG_FIT)
 265         } else if (images.fit_uname_os) {
 266                 ret = fit_image_get_entry(images.fit_hdr_os,
 267                                 images.fit_noffset_os, &images.ep);
 268                 if (ret) {
 269                         puts("Can't get entry point property!\n");
 270                         return 1;
 271                 }
 272 #endif
 273         } else {
 274                 puts("Could not find kernel entry point!\n");
 275                 return 1;
 276         }
 277
 278         if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
 279                 images.os.load = images.os.image_start;
 280                 images.ep += images.os.load;
 281         }
 282
 283         if (((images.os.type == IH_TYPE_KERNEL) ||
 284              (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
 285              (images.os.type == IH_TYPE_MULTI)) &&
 286             (images.os.os == IH_OS_LINUX)) {
 287                 /* find ramdisk */
 288                 ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
 289                                 &images.rd_start, &images.rd_end);
 290                 if (ret) {
 291                         puts("Ramdisk image is corrupt or invalid\n");
 292                         return 1;
 293                 }
 294
 295 #if defined(CONFIG_OF_LIBFDT)
 296                 /* find flattened device tree */
 297                 ret = boot_get_fdt(flag, argc, argv, &images,
 298                                    &images.ft_addr, &images.ft_len);
 299                 if (ret) {
 300                         puts("Could not find a valid device tree\n");
 301                         return 1;
 302                 }
 303
 304                 set_working_fdt_addr(images.ft_addr);
 305 #endif
 306         }
 307
 308         images.os.start = (ulong)os_hdr;
 309         images.state = BOOTM_STATE_START;
 310
 311         return 0;
 312 }
 313
 314 #define BOOTM_ERR_RESET         -1
 315 #define BOOTM_ERR_OVERLAP       -2
 316 #define BOOTM_ERR_UNIMPLEMENTED -3
 317 static int bootm_load_os(image_info_t os, ulong *load_end, int boot_progress)
 318 {
 319         uint8_t comp = os.comp;
 320         ulong load = os.load;
 321         ulong blob_start = os.start;
 322         ulong blob_end = os.end;
 323         ulong image_start = os.image_start;
 324         ulong image_len = os.image_len;
 325         __maybe_unused uint unc_len = CONFIG_SYS_BOOTM_LEN;
 326         int no_overlap = 0;
 327 #if defined(CONFIG_LZMA) || defined(CONFIG_LZO)
 328         int ret;
 329 #endif /* defined(CONFIG_LZMA) || defined(CONFIG_LZO) */
 330
 331         const char *type_name = genimg_get_type_name(os.type);
 332
 333         switch (comp) {
 334         case IH_COMP_NONE:
 335                 if (load == blob_start || load == image_start) {
 336                         printf("   XIP %s ... ", type_name);
 337                         no_overlap = 1;
 338                 } else {
 339                         printf("   Loading %s ... ", type_name);
 340                         memmove_wd((void *)load, (void *)image_start,
 341                                         image_len, CHUNKSZ);
 342                 }
 343                 *load_end = load + image_len;
 344                 puts("OK\n");
 345                 break;
 346 #ifdef CONFIG_GZIP
 347         case IH_COMP_GZIP:
 348                 printf("   Uncompressing %s ... ", type_name);
 349                 if (gunzip((void *)load, unc_len,
 350                                 (uchar *)image_start, &image_len) != 0) {
 351                         puts("GUNZIP: uncompress, out-of-mem or overwrite "
 352                                 "error - must RESET board to recover\n");
 353                         if (boot_progress)
 354                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 355                         return BOOTM_ERR_RESET;
 356                 }
 357
 358                 *load_end = load + image_len;
 359                 break;
 360 #endif /* CONFIG_GZIP */
 361 #ifdef CONFIG_BZIP2
 362         case IH_COMP_BZIP2:
 363                 printf("   Uncompressing %s ... ", type_name);
 364                 /*
 365                  * If we've got less than 4 MB of malloc() space,
 366                  * use slower decompression algorithm which requires
 367                  * at most 2300 KB of memory.
 368                  */
 369                 int i = BZ2_bzBuffToBuffDecompress((char *)load,
 370                                         &unc_len, (char *)image_start, image_len,
 371                                         CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
 372                 if (i != BZ_OK) {
 373                         printf("BUNZIP2: uncompress or overwrite error %d "
 374                                 "- must RESET board to recover\n", i);
 375                         if (boot_progress)
 376                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 377                         return BOOTM_ERR_RESET;
 378                 }
 379
 380                 *load_end = load + unc_len;
 381                 break;
 382 #endif /* CONFIG_BZIP2 */
 383 #ifdef CONFIG_LZMA
 384         case IH_COMP_LZMA: {
 385                 SizeT lzma_len = unc_len;
 386                 printf("   Uncompressing %s ... ", type_name);
 387
 388                 ret = lzmaBuffToBuffDecompress(
 389                         (unsigned char *)load, &lzma_len,
 390                         (unsigned char *)image_start, image_len);
 391                 unc_len = lzma_len;
 392                 if (ret != SZ_OK) {
 393                         printf("LZMA: uncompress or overwrite error %d "
 394                                 "- must RESET board to recover\n", ret);
 395                         bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 396                         return BOOTM_ERR_RESET;
 397                 }
 398                 *load_end = load + unc_len;
 399                 break;
 400         }
 401 #endif /* CONFIG_LZMA */
 402 #ifdef CONFIG_LZO
 403         case IH_COMP_LZO:
 404                 printf("   Uncompressing %s ... ", type_name);
 405
 406                 ret = lzop_decompress((const unsigned char *)image_start,
 407                                           image_len, (unsigned char *)load,
 408                                           &unc_len);
 409                 if (ret != LZO_E_OK) {
 410                         printf("LZO: uncompress or overwrite error %d "
 411                               "- must RESET board to recover\n", ret);
 412                         if (boot_progress)
 413                                 bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
 414                         return BOOTM_ERR_RESET;
 415                 }
 416
 417                 *load_end = load + unc_len;
 418                 break;
 419 #endif /* CONFIG_LZO */
 420         default:
 421                 printf("Unimplemented compression type %d\n", comp);
 422                 return BOOTM_ERR_UNIMPLEMENTED;
 423         }
 424
 425         flush_cache(load, (*load_end - load) * sizeof(ulong));
 426
 427         puts("OK\n");
 428         debug("   kernel loaded at 0x%08lx, end = 0x%08lx\n", load, *load_end);
 429         bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
 430
 431         if (!no_overlap && (load < blob_end) && (*load_end > blob_start)) {
 432                 debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
 433                         blob_start, blob_end);
 434                 debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
 435                         *load_end);
 436
 437                 return BOOTM_ERR_OVERLAP;
 438         }
 439
 440         return 0;
 441 }
 442
 443 static int bootm_start_standalone(ulong iflag, int argc, char * const argv[])
 444 {
 445         char  *s;
 446         int   (*appl)(int, char * const []);
 447
 448         /* Don't start if "autostart" is set to "no" */
 449         if (((s = getenv("autostart")) != NULL) && (strcmp(s, "no") == 0)) {
 450                 char buf[32];
 451                 sprintf(buf, "%lX", images.os.image_len);
 452                 setenv("filesize", buf);
 453                 return 0;
 454         }
 455         appl = (int (*)(int, char * const []))(ulong)ntohl(images.ep);
 456         (*appl)(argc-1, &argv[1]);
 457         return 0;
 458 }
 459
 460 /* we overload the cmd field with our state machine info instead of a
 461  * function pointer */
 462 static cmd_tbl_t cmd_bootm_sub[] = {
 463         U_BOOT_CMD_MKENT(start, 0, 1, (void *)BOOTM_STATE_START, "", ""),
 464         U_BOOT_CMD_MKENT(loados, 0, 1, (void *)BOOTM_STATE_LOADOS, "", ""),
 465 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 466         U_BOOT_CMD_MKENT(ramdisk, 0, 1, (void *)BOOTM_STATE_RAMDISK, "", ""),
 467 #endif
 468 #ifdef CONFIG_OF_LIBFDT
 469         U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
 470 #endif
 471         U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
 472         U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
 473         U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
 474         U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
 475 };
 476
 477 int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc,
 478                         char * const argv[])
 479 {
 480         int ret = 0;
 481         long state;
 482         cmd_tbl_t *c;
 483         boot_os_fn *boot_fn;
 484
 485         c = find_cmd_tbl(argv[1], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));
 486
 487         if (c) {
 488                 state = (long)c->cmd;
 489
 490                 /* treat start special since it resets the state machine */
 491                 if (state == BOOTM_STATE_START) {
 492                         argc--;
 493                         argv++;
 494                         return bootm_start(cmdtp, flag, argc, argv);
 495                 }
 496         } else {
 497                 /* Unrecognized command */
 498                 return CMD_RET_USAGE;
 499         }
 500
 501         if (images.state >= state) {
 502                 printf("Trying to execute a command out of order\n");
 503                 return CMD_RET_USAGE;
 504         }
 505
 506         images.state |= state;
 507         boot_fn = boot_os[images.os.os];
 508
 509         switch (state) {
 510                 ulong load_end;
 511                 case BOOTM_STATE_START:
 512                         /* should never occur */
 513                         break;
 514                 case BOOTM_STATE_LOADOS:
 515                         ret = bootm_load_os(images.os, &load_end, 0);
 516                         if (ret)
 517                                 return ret;
 518
 519                         lmb_reserve(&images.lmb, images.os.load,
 520                                         (load_end - images.os.load));
 521                         break;
 522 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
 523                 case BOOTM_STATE_RAMDISK:
 524                 {
 525                         ulong rd_len = images.rd_end - images.rd_start;
 526                         char str[17];
 527
 528                         ret = boot_ramdisk_high(&images.lmb, images.rd_start,
 529                                 rd_len, &images.initrd_start, &images.initrd_end);
 530                         if (ret)
 531                                 return ret;
 532
 533                         sprintf(str, "%lx", images.initrd_start);
 534                         setenv("initrd_start", str);
 535                         sprintf(str, "%lx", images.initrd_end);
 536                         setenv("initrd_end", str);
 537                 }
 538                         break;
 539 #endif
 540 #if defined(CONFIG_OF_LIBFDT)
 541                 case BOOTM_STATE_FDT:
 542                 {
 543                         boot_fdt_add_mem_rsv_regions(&images.lmb,
 544                                                      images.ft_addr);
 545                         ret = boot_relocate_fdt(&images.lmb,
 546                                 &images.ft_addr, &images.ft_len);
 547                         break;
 548                 }
 549 #endif
 550                 case BOOTM_STATE_OS_CMDLINE:
 551                         ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, &images);
 552                         if (ret)
 553                                 printf("cmdline subcommand not supported\n");
 554                         break;
 555                 case BOOTM_STATE_OS_BD_T:
 556                         ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, &images);
 557                         if (ret)
 558                                 printf("bdt subcommand not supported\n");
 559                         break;
 560                 case BOOTM_STATE_OS_PREP:
 561                         ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, &images);
 562                         if (ret)
 563                                 printf("prep subcommand not supported\n");
 564                         break;
 565                 case BOOTM_STATE_OS_GO:
 566                         disable_interrupts();
 567                         arch_preboot_os();
 568                         boot_fn(BOOTM_STATE_OS_GO, argc, argv, &images);
 569                         break;
 570         }
 571
 572         return ret;
 573 }
 574
 575 /*******************************************************************/
 576 /* bootm - boot application image from image in memory */
 577 /*******************************************************************/
 578
 579 int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 580 {
 581         ulong           iflag;
 582         ulong           load_end = 0;
 583         int             ret;
 584         boot_os_fn      *boot_fn;
 585 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 586         static int relocated = 0;
 587
 588         /* relocate boot function table */
 589         if (!relocated) {
 590                 int i;
 591                 for (i = 0; i < ARRAY_SIZE(boot_os); i++)
 592                         if (boot_os[i] != NULL)
 593                                 boot_os[i] += gd->reloc_off;
 594                 relocated = 1;
 595         }
 596 #endif
 597
 598         /* determine if we have a sub command */
 599         if (argc > 1) {
 600                 char *endp;
 601
 602                 simple_strtoul(argv[1], &endp, 16);
 603                 /* endp pointing to NULL means that argv[1] was just a
 604                  * valid number, pass it along to the normal bootm processing
 605                  *
 606                  * If endp is ':' or '#' assume a FIT identifier so pass
 607                  * along for normal processing.
 608                  *
 609                  * Right now we assume the first arg should never be '-'
 610                  */
 611                 if ((*endp != 0) && (*endp != ':') && (*endp != '#'))
 612                         return do_bootm_subcommand(cmdtp, flag, argc, argv);
 613         }
 614
 615         if (bootm_start(cmdtp, flag, argc, argv))
 616                 return 1;
 617
 618         /*
 619          * We have reached the point of no return: we are going to
 620          * overwrite all exception vector code, so we cannot easily
 621          * recover from any failures any more...
 622          */
 623         iflag = disable_interrupts();
 624
 625 #if defined(CONFIG_CMD_USB)
 626         /*
 627          * turn off USB to prevent the host controller from writing to the
 628          * SDRAM while Linux is booting. This could happen (at least for OHCI
 629          * controller), because the HCCA (Host Controller Communication Area)
 630          * lies within the SDRAM and the host controller writes continously to
 631          * this area (as busmaster!). The HccaFrameNumber is for example
 632          * updated every 1 ms within the HCCA structure in SDRAM! For more
 633          * details see the OpenHCI specification.
 634          */
 635         usb_stop();
 636 #endif
 637
 638         ret = bootm_load_os(images.os, &load_end, 1);
 639
 640         if (ret < 0) {
 641                 if (ret == BOOTM_ERR_RESET)
 642                         do_reset(cmdtp, flag, argc, argv);
 643                 if (ret == BOOTM_ERR_OVERLAP) {
 644                         if (images.legacy_hdr_valid) {
 645                                 image_header_t *hdr;
 646                                 hdr = &images.legacy_hdr_os_copy;
 647                                 if (image_get_type(hdr) == IH_TYPE_MULTI)
 648                                         puts("WARNING: legacy format multi "
 649                                                 "component image "
 650                                                 "overwritten\n");
 651                         } else {
 652                                 puts("ERROR: new format image overwritten - "
 653                                         "must RESET the board to recover\n");
 654                                 bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
 655                                 do_reset(cmdtp, flag, argc, argv);
 656                         }
 657                 }
 658                 if (ret == BOOTM_ERR_UNIMPLEMENTED) {
 659                         if (iflag)
 660                                 enable_interrupts();
 661                         bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
 662                         return 1;
 663                 }
 664         }
 665
 666         lmb_reserve(&images.lmb, images.os.load, (load_end - images.os.load));
 667
 668         if (images.os.type == IH_TYPE_STANDALONE) {
 669                 if (iflag)
 670                         enable_interrupts();
 671                 /* This may return when 'autostart' is 'no' */
 672                 bootm_start_standalone(iflag, argc, argv);
 673                 return 0;
 674         }
 675
 676         bootstage_mark(BOOTSTAGE_ID_CHECK_BOOT_OS);
 677
 678 #ifdef CONFIG_SILENT_CONSOLE
 679         if (images.os.os == IH_OS_LINUX)
 680                 fixup_silent_linux();
 681 #endif
 682
 683         boot_fn = boot_os[images.os.os];
 684
 685         if (boot_fn == NULL) {
 686                 if (iflag)
 687                         enable_interrupts();
 688                 printf("ERROR: booting os '%s' (%d) is not supported\n",
 689                         genimg_get_os_name(images.os.os), images.os.os);
 690                 bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
 691                 return 1;
 692         }
 693
 694         arch_preboot_os();
 695
 696         boot_fn(0, argc, argv, &images);
 697
 698         bootstage_error(BOOTSTAGE_ID_BOOT_OS_RETURNED);
 699 #ifdef DEBUG
 700         puts("\n## Control returned to monitor - resetting...\n");
 701 #endif
 702         do_reset(cmdtp, flag, argc, argv);
 703
 704         return 1;
 705 }
 706
 707 int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
 708 {
 709         const char *ep = getenv("autostart");
 710
 711         if (ep && !strcmp(ep, "yes")) {
 712                 char *local_args[2];
 713                 local_args[0] = (char *)cmd;
 714                 local_args[1] = NULL;
 715                 printf("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
 716                 return do_bootm(cmdtp, 0, 1, local_args);
 717         }
 718
 719         return 0;
 720 }
 721
 722 /**
 723  * image_get_kernel - verify legacy format kernel image
 724  * @img_addr: in RAM address of the legacy format image to be verified
 725  * @verify: data CRC verification flag
 726  *
 727  * image_get_kernel() verifies legacy image integrity and returns pointer to
 728  * legacy image header if image verification was completed successfully.
 729  *
 730  * returns:
 731  *     pointer to a legacy image header if valid image was found
 732  *     otherwise return NULL
 733  */
 734 static image_header_t *image_get_kernel(ulong img_addr, int verify)
 735 {
 736         image_header_t *hdr = (image_header_t *)img_addr;
 737
 738         if (!image_check_magic(hdr)) {
 739                 puts("Bad Magic Number\n");
 740                 bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
 741                 return NULL;
 742         }
 743         bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
 744
 745         if (!image_check_hcrc(hdr)) {
 746                 puts("Bad Header Checksum\n");
 747                 bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
 748                 return NULL;
 749         }
 750
 751         bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
 752         image_print_contents(hdr);
 753
 754         if (verify) {
 755                 puts("   Verifying Checksum ... ");
 756                 if (!image_check_dcrc(hdr)) {
 757                         printf("Bad Data CRC\n");
 758                         bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
 759                         return NULL;
 760                 }
 761                 puts("OK\n");
 762         }
 763         bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
 764
 765         if (!image_check_target_arch(hdr)) {
 766                 printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
 767                 bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
 768                 return NULL;
 769         }
 770         return hdr;
 771 }
 772
 773 /**
 774  * fit_check_kernel - verify FIT format kernel subimage
 775  * @fit_hdr: pointer to the FIT image header
 776  * os_noffset: kernel subimage node offset within FIT image
 777  * @verify: data CRC verification flag
 778  *
 779  * fit_check_kernel() verifies integrity of the kernel subimage and from
 780  * specified FIT image.
 781  *
 782  * returns:
 783  *     1, on success
 784  *     0, on failure
 785  */
 786 #if defined(CONFIG_FIT)
 787 static int fit_check_kernel(const void *fit, int os_noffset, int verify)
 788 {
 789         fit_image_print(fit, os_noffset, "   ");
 790
 791         if (verify) {
 792                 puts("   Verifying Hash Integrity ... ");
 793                 if (!fit_image_check_hashes(fit, os_noffset)) {
 794                         puts("Bad Data Hash\n");
 795                         bootstage_error(BOOTSTAGE_ID_FIT_CHECK_HASH);
 796                         return 0;
 797                 }
 798                 puts("OK\n");
 799         }
 800         bootstage_mark(BOOTSTAGE_ID_FIT_CHECK_ARCH);
 801
 802         if (!fit_image_check_target_arch(fit, os_noffset)) {
 803                 puts("Unsupported Architecture\n");
 804                 bootstage_error(BOOTSTAGE_ID_FIT_CHECK_ARCH);
 805                 return 0;
 806         }
 807
 808         bootstage_mark(BOOTSTAGE_ID_FIT_CHECK_KERNEL);
 809         if (!fit_image_check_type(fit, os_noffset, IH_TYPE_KERNEL) &&
 810             !fit_image_check_type(fit, os_noffset, IH_TYPE_KERNEL_NOLOAD)) {
 811                 puts("Not a kernel image\n");
 812                 bootstage_error(BOOTSTAGE_ID_FIT_CHECK_KERNEL);
 813                 return 0;
 814         }
 815
 816         bootstage_mark(BOOTSTAGE_ID_FIT_CHECKED);
 817         return 1;
 818 }
 819 #endif /* CONFIG_FIT */
 820
 821 /**
 822  * boot_get_kernel - find kernel image
 823  * @os_data: pointer to a ulong variable, will hold os data start address
 824  * @os_len: pointer to a ulong variable, will hold os data length
 825  *
 826  * boot_get_kernel() tries to find a kernel image, verifies its integrity
 827  * and locates kernel data.
 828  *
 829  * returns:
 830  *     pointer to image header if valid image was found, plus kernel start
 831  *     address and length, otherwise NULL
 832  */
 833 static void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 834                 char * const argv[], bootm_headers_t *images, ulong *os_data,
 835                 ulong *os_len)
 836 {
 837         image_header_t  *hdr;
 838         ulong           img_addr;
 839 #if defined(CONFIG_FIT)
 840         void            *fit_hdr;
 841         const char      *fit_uname_config = NULL;
 842         const char      *fit_uname_kernel = NULL;
 843         const void      *data;
 844         size_t          len;
 845         int             cfg_noffset;
 846         int             os_noffset;
 847 #endif
 848
 849         /* find out kernel image address */
 850         if (argc < 2) {
 851                 img_addr = load_addr;
 852                 debug("*  kernel: default image load address = 0x%08lx\n",
 853                                 load_addr);
 854 #if defined(CONFIG_FIT)
 855         } else if (fit_parse_conf(argv[1], load_addr, &img_addr,
 856                                                         &fit_uname_config)) {
 857                 debug("*  kernel: config '%s' from image at 0x%08lx\n",
 858                                 fit_uname_config, img_addr);
 859         } else if (fit_parse_subimage(argv[1], load_addr, &img_addr,
 860                                                         &fit_uname_kernel)) {
 861                 debug("*  kernel: subimage '%s' from image at 0x%08lx\n",
 862                                 fit_uname_kernel, img_addr);
 863 #endif
 864         } else {
 865                 img_addr = simple_strtoul(argv[1], NULL, 16);
 866                 debug("*  kernel: cmdline image address = 0x%08lx\n", img_addr);
 867         }
 868
 869         bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
 870
 871         /* copy from dataflash if needed */
 872         img_addr = genimg_get_image(img_addr);
 873
 874         /* check image type, for FIT images get FIT kernel node */
 875         *os_data = *os_len = 0;
 876         switch (genimg_get_format((void *)img_addr)) {
 877         case IMAGE_FORMAT_LEGACY:
 878                 printf("## Booting kernel from Legacy Image at %08lx ...\n",
 879                                 img_addr);
 880                 hdr = image_get_kernel(img_addr, images->verify);
 881                 if (!hdr)
 882                         return NULL;
 883                 bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 884
 885                 /* get os_data and os_len */
 886                 switch (image_get_type(hdr)) {
 887                 case IH_TYPE_KERNEL:
 888                 case IH_TYPE_KERNEL_NOLOAD:
 889                         *os_data = image_get_data(hdr);
 890                         *os_len = image_get_data_size(hdr);
 891                         break;
 892                 case IH_TYPE_MULTI:
 893                         image_multi_getimg(hdr, 0, os_data, os_len);
 894                         break;
 895                 case IH_TYPE_STANDALONE:
 896                         *os_data = image_get_data(hdr);
 897                         *os_len = image_get_data_size(hdr);
 898                         break;
 899                 default:
 900                         printf("Wrong Image Type for %s command\n",
 901                                 cmdtp->name);
 902                         bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
 903                         return NULL;
 904                 }
 905
 906                 /*
 907                  * copy image header to allow for image overwrites during
 908                  * kernel decompression.
 909                  */
 910                 memmove(&images->legacy_hdr_os_copy, hdr,
 911                         sizeof(image_header_t));
 912
 913                 /* save pointer to image header */
 914                 images->legacy_hdr_os = hdr;
 915
 916                 images->legacy_hdr_valid = 1;
 917                 bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
 918                 break;
 919 #if defined(CONFIG_FIT)
 920         case IMAGE_FORMAT_FIT:
 921                 fit_hdr = (void *)img_addr;
 922                 printf("## Booting kernel from FIT Image at %08lx ...\n",
 923                                 img_addr);
 924
 925                 if (!fit_check_format(fit_hdr)) {
 926                         puts("Bad FIT kernel image format!\n");
 927                         bootstage_error(BOOTSTAGE_ID_FIT_FORMAT);
 928                         return NULL;
 929                 }
 930                 bootstage_mark(BOOTSTAGE_ID_FIT_FORMAT);
 931
 932                 if (!fit_uname_kernel) {
 933                         /*
 934                          * no kernel image node unit name, try to get config
 935                          * node first. If config unit node name is NULL
 936                          * fit_conf_get_node() will try to find default config
 937                          * node
 938                          */
 939                         bootstage_mark(BOOTSTAGE_ID_FIT_NO_UNIT_NAME);
 940                         cfg_noffset = fit_conf_get_node(fit_hdr,
 941                                                         fit_uname_config);
 942                         if (cfg_noffset < 0) {
 943                                 bootstage_error(BOOTSTAGE_ID_FIT_NO_UNIT_NAME);
 944                                 return NULL;
 945                         }
 946                         /* save configuration uname provided in the first
 947                          * bootm argument
 948                          */
 949                         images->fit_uname_cfg = fdt_get_name(fit_hdr,
 950                                                                 cfg_noffset,
 951                                                                 NULL);
 952                         printf("   Using '%s' configuration\n",
 953                                 images->fit_uname_cfg);
 954                         bootstage_mark(BOOTSTAGE_ID_FIT_CONFIG);
 955
 956                         os_noffset = fit_conf_get_kernel_node(fit_hdr,
 957                                                                 cfg_noffset);
 958                         fit_uname_kernel = fit_get_name(fit_hdr, os_noffset,
 959                                                         NULL);
 960                 } else {
 961                         /* get kernel component image node offset */
 962                         bootstage_mark(BOOTSTAGE_ID_FIT_UNIT_NAME);
 963                         os_noffset = fit_image_get_node(fit_hdr,
 964                                                         fit_uname_kernel);
 965                 }
 966                 if (os_noffset < 0) {
 967                         bootstage_error(BOOTSTAGE_ID_FIT_CONFIG);
 968                         return NULL;
 969                 }
 970
 971                 printf("   Trying '%s' kernel subimage\n", fit_uname_kernel);
 972
 973                 bootstage_mark(BOOTSTAGE_ID_FIT_CHECK_SUBIMAGE);
 974                 if (!fit_check_kernel(fit_hdr, os_noffset, images->verify))
 975                         return NULL;
 976
 977                 /* get kernel image data address and length */
 978                 if (fit_image_get_data(fit_hdr, os_noffset, &data, &len)) {
 979                         puts("Could not find kernel subimage data!\n");
 980                         bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO_ERR);
 981                         return NULL;
 982                 }
 983                 bootstage_mark(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 984
 985                 *os_len = len;
 986                 *os_data = (ulong)data;
 987                 images->fit_hdr_os = fit_hdr;
 988                 images->fit_uname_os = fit_uname_kernel;
 989                 images->fit_noffset_os = os_noffset;
 990                 break;
 991 #endif
 992         default:
 993                 printf("Wrong Image Format for %s command\n", cmdtp->name);
 994                 bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
 995                 return NULL;
 996         }
 997
 998         debug("   kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
 999                         *os_data, *os_len, *os_len);
1000
1001         return (void *)img_addr;
1002 }
1003
1004 U_BOOT_CMD(
1005         bootm,  CONFIG_SYS_MAXARGS,     1,      do_bootm,
1006         "boot application image from memory",
1007         "[addr [arg ...]]\n    - boot application image stored in memory\n"
1008         "\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
1009         "\t'arg' can be the address of an initrd image\n"
1010 #if defined(CONFIG_OF_LIBFDT)
1011         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
1012         "\ta third argument is required which is the address of the\n"
1013         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
1014         "\tuse a '-' for the second argument. If you do not pass a third\n"
1015         "\ta bd_info struct will be passed instead\n"
1016 #endif
1017 #if defined(CONFIG_FIT)
1018         "\t\nFor the new multi component uImage format (FIT) addresses\n"
1019         "\tmust be extened to include component or configuration unit name:\n"
1020         "\taddr:<subimg_uname> - direct component image specification\n"
1021         "\taddr#<conf_uname>   - configuration specification\n"
1022         "\tUse iminfo command to get the list of existing component\n"
1023         "\timages and configurations.\n"
1024 #endif
1025         "\nSub-commands to do part of the bootm sequence.  The sub-commands "
1026         "must be\n"
1027         "issued in the order below (it's ok to not issue all sub-commands):\n"
1028         "\tstart [addr [arg ...]]\n"
1029         "\tloados  - load OS image\n"
1030 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SPARC)
1031         "\tramdisk - relocate initrd, set env initrd_start/initrd_end\n"
1032 #endif
1033 #if defined(CONFIG_OF_LIBFDT)
1034         "\tfdt     - relocate flat device tree\n"
1035 #endif
1036         "\tcmdline - OS specific command line processing/setup\n"
1037         "\tbdt     - OS specific bd_t processing\n"
1038         "\tprep    - OS specific prep before relocation or go\n"
1039         "\tgo      - start OS"
1040 );
1041
1042 /*******************************************************************/
1043 /* bootd - boot default image */
1044 /*******************************************************************/
1045 #if defined(CONFIG_CMD_BOOTD)
1046 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1047 {
1048         int rcode = 0;
1049
1050         if (run_command(getenv("bootcmd"), flag) < 0)
1051                 rcode = 1;
1052         return rcode;
1053 }
1054
1055 U_BOOT_CMD(
1056         boot,   1,      1,      do_bootd,
1057         "boot default, i.e., run 'bootcmd'",
1058         ""
1059 );
1060
1061 /* keep old command name "bootd" for backward compatibility */
1062 U_BOOT_CMD(
1063         bootd, 1,       1,      do_bootd,
1064         "boot default, i.e., run 'bootcmd'",
1065         ""
1066 );
1067
1068 #endif
1069
1070
1071 /*******************************************************************/
1072 /* iminfo - print header info for a requested image */
1073 /*******************************************************************/
1074 #if defined(CONFIG_CMD_IMI)
1075 int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1076 {
1077         int     arg;
1078         ulong   addr;
1079         int     rcode = 0;
1080
1081         if (argc < 2) {
1082                 return image_info(load_addr);
1083         }
1084
1085         for (arg = 1; arg < argc; ++arg) {
1086                 addr = simple_strtoul(argv[arg], NULL, 16);
1087                 if (image_info(addr) != 0)
1088                         rcode = 1;
1089         }
1090         return rcode;
1091 }
1092
1093 static int image_info(ulong addr)
1094 {
1095         void *hdr = (void *)addr;
1096
1097         printf("\n## Checking Image at %08lx ...\n", addr);
1098
1099         switch (genimg_get_format(hdr)) {
1100         case IMAGE_FORMAT_LEGACY:
1101                 puts("   Legacy image found\n");
1102                 if (!image_check_magic(hdr)) {
1103                         puts("   Bad Magic Number\n");
1104                         return 1;
1105                 }
1106
1107                 if (!image_check_hcrc(hdr)) {
1108                         puts("   Bad Header Checksum\n");
1109                         return 1;
1110                 }
1111
1112                 image_print_contents(hdr);
1113
1114                 puts("   Verifying Checksum ... ");
1115                 if (!image_check_dcrc(hdr)) {
1116                         puts("   Bad Data CRC\n");
1117                         return 1;
1118                 }
1119                 puts("OK\n");
1120                 return 0;
1121 #if defined(CONFIG_FIT)
1122         case IMAGE_FORMAT_FIT:
1123                 puts("   FIT image found\n");
1124
1125                 if (!fit_check_format(hdr)) {
1126                         puts("Bad FIT image format!\n");
1127                         return 1;
1128                 }
1129
1130                 fit_print_contents(hdr);
1131
1132                 if (!fit_all_image_check_hashes(hdr)) {
1133                         puts("Bad hash in FIT image!\n");
1134                         return 1;
1135                 }
1136
1137                 return 0;
1138 #endif
1139         default:
1140                 puts("Unknown image format!\n");
1141                 break;
1142         }
1143
1144         return 1;
1145 }
1146
1147 U_BOOT_CMD(
1148         iminfo, CONFIG_SYS_MAXARGS,     1,      do_iminfo,
1149         "print header information for application image",
1150         "addr [addr ...]\n"
1151         "    - print header information for application image starting at\n"
1152         "      address 'addr' in memory; this includes verification of the\n"
1153         "      image contents (magic number, header and payload checksums)"
1154 );
1155 #endif
1156
1157
1158 /*******************************************************************/
1159 /* imls - list all images found in flash */
1160 /*******************************************************************/
1161 #if defined(CONFIG_CMD_IMLS)
1162 int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1163 {
1164         flash_info_t *info;
1165         int i, j;
1166         void *hdr;
1167
1168         for (i = 0, info = &flash_info[0];
1169                 i < CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
1170
1171                 if (info->flash_id == FLASH_UNKNOWN)
1172                         goto next_bank;
1173                 for (j = 0; j < info->sector_count; ++j) {
1174
1175                         hdr = (void *)info->start[j];
1176                         if (!hdr)
1177                                 goto next_sector;
1178
1179                         switch (genimg_get_format(hdr)) {
1180                         case IMAGE_FORMAT_LEGACY:
1181                                 if (!image_check_hcrc(hdr))
1182                                         goto next_sector;
1183
1184                                 printf("Legacy Image at %08lX:\n", (ulong)hdr);
1185                                 image_print_contents(hdr);
1186
1187                                 puts("   Verifying Checksum ... ");
1188                                 if (!image_check_dcrc(hdr)) {
1189                                         puts("Bad Data CRC\n");
1190                                 } else {
1191                                         puts("OK\n");
1192                                 }
1193                                 break;
1194 #if defined(CONFIG_FIT)
1195                         case IMAGE_FORMAT_FIT:
1196                                 if (!fit_check_format(hdr))
1197                                         goto next_sector;
1198
1199                                 printf("FIT Image at %08lX:\n", (ulong)hdr);
1200                                 fit_print_contents(hdr);
1201                                 break;
1202 #endif
1203                         default:
1204                                 goto next_sector;
1205                         }
1206
1207 next_sector:            ;
1208                 }
1209 next_bank:      ;
1210         }
1211
1212         return (0);
1213 }
1214
1215 U_BOOT_CMD(
1216         imls,   1,              1,      do_imls,
1217         "list all images found in flash",
1218         "\n"
1219         "    - Prints information about all images found at sector\n"
1220         "      boundaries in flash."
1221 );
1222 #endif
1223
1224 /*******************************************************************/
1225 /* helper routines */
1226 /*******************************************************************/
1227 #ifdef CONFIG_SILENT_CONSOLE
1228 static void fixup_silent_linux(void)
1229 {
1230         char buf[256], *start, *end;
1231         char *cmdline = getenv("bootargs");
1232
1233         /* Only fix cmdline when requested */
1234         if (!(gd->flags & GD_FLG_SILENT))
1235                 return;
1236
1237         debug("before silent fix-up: %s\n", cmdline);
1238         if (cmdline) {
1239                 start = strstr(cmdline, "console=");
1240                 if (start) {
1241                         end = strchr(start, ' ');
1242                         strncpy(buf, cmdline, (start - cmdline + 8));
1243                         if (end)
1244                                 strcpy(buf + (start - cmdline + 8), end);
1245                         else
1246                                 buf[start - cmdline + 8] = '\0';
1247                 } else {
1248                         strcpy(buf, cmdline);
1249                         strcat(buf, " console=");
1250                 }
1251         } else {
1252                 strcpy(buf, "console=");
1253         }
1254
1255         setenv("bootargs", buf);
1256         debug("after silent fix-up: %s\n", buf);
1257 }
1258 #endif /* CONFIG_SILENT_CONSOLE */
1259
1260
1261 /*******************************************************************/
1262 /* OS booting routines */
1263 /*******************************************************************/
1264
1265 #ifdef CONFIG_BOOTM_NETBSD
1266 static int do_bootm_netbsd(int flag, int argc, char * const argv[],
1267                             bootm_headers_t *images)
1268 {
1269         void (*loader)(bd_t *, image_header_t *, char *, char *);
1270         image_header_t *os_hdr, *hdr;
1271         ulong kernel_data, kernel_len;
1272         char *consdev;
1273         char *cmdline;
1274
1275         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1276                 return 1;
1277
1278 #if defined(CONFIG_FIT)
1279         if (!images->legacy_hdr_valid) {
1280                 fit_unsupported_reset("NetBSD");
1281                 return 1;
1282         }
1283 #endif
1284         hdr = images->legacy_hdr_os;
1285
1286         /*
1287          * Booting a (NetBSD) kernel image
1288          *
1289          * This process is pretty similar to a standalone application:
1290          * The (first part of an multi-) image must be a stage-2 loader,
1291          * which in turn is responsible for loading & invoking the actual
1292          * kernel.  The only differences are the parameters being passed:
1293          * besides the board info strucure, the loader expects a command
1294          * line, the name of the console device, and (optionally) the
1295          * address of the original image header.
1296          */
1297         os_hdr = NULL;
1298         if (image_check_type(&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
1299                 image_multi_getimg(hdr, 1, &kernel_data, &kernel_len);
1300                 if (kernel_len)
1301                         os_hdr = hdr;
1302         }
1303
1304         consdev = "";
1305 #if   defined(CONFIG_8xx_CONS_SMC1)
1306         consdev = "smc1";
1307 #elif defined(CONFIG_8xx_CONS_SMC2)
1308         consdev = "smc2";
1309 #elif defined(CONFIG_8xx_CONS_SCC2)
1310         consdev = "scc2";
1311 #elif defined(CONFIG_8xx_CONS_SCC3)
1312         consdev = "scc3";
1313 #endif
1314
1315         if (argc > 2) {
1316                 ulong len;
1317                 int   i;
1318
1319                 for (i = 2, len = 0; i < argc; i += 1)
1320                         len += strlen(argv[i]) + 1;
1321                 cmdline = malloc(len);
1322
1323                 for (i = 2, len = 0; i < argc; i += 1) {
1324                         if (i > 2)
1325                                 cmdline[len++] = ' ';
1326                         strcpy(&cmdline[len], argv[i]);
1327                         len += strlen(argv[i]);
1328                 }
1329         } else if ((cmdline = getenv("bootargs")) == NULL) {
1330                 cmdline = "";
1331         }
1332
1333         loader = (void (*)(bd_t *, image_header_t *, char *, char *))images->ep;
1334
1335         printf("## Transferring control to NetBSD stage-2 loader "
1336                 "(at address %08lx) ...\n",
1337                 (ulong)loader);
1338
1339         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1340
1341         /*
1342          * NetBSD Stage-2 Loader Parameters:
1343          *   r3: ptr to board info data
1344          *   r4: image address
1345          *   r5: console device
1346          *   r6: boot args string
1347          */
1348         (*loader)(gd->bd, os_hdr, consdev, cmdline);
1349
1350         return 1;
1351 }
1352 #endif /* CONFIG_BOOTM_NETBSD*/
1353
1354 #ifdef CONFIG_LYNXKDI
1355 static int do_bootm_lynxkdi(int flag, int argc, char * const argv[],
1356                              bootm_headers_t *images)
1357 {
1358         image_header_t *hdr = &images->legacy_hdr_os_copy;
1359
1360         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1361                 return 1;
1362
1363 #if defined(CONFIG_FIT)
1364         if (!images->legacy_hdr_valid) {
1365                 fit_unsupported_reset("Lynx");
1366                 return 1;
1367         }
1368 #endif
1369
1370         lynxkdi_boot((image_header_t *)hdr);
1371
1372         return 1;
1373 }
1374 #endif /* CONFIG_LYNXKDI */
1375
1376 #ifdef CONFIG_BOOTM_RTEMS
1377 static int do_bootm_rtems(int flag, int argc, char * const argv[],
1378                            bootm_headers_t *images)
1379 {
1380         void (*entry_point)(bd_t *);
1381
1382         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1383                 return 1;
1384
1385 #if defined(CONFIG_FIT)
1386         if (!images->legacy_hdr_valid) {
1387                 fit_unsupported_reset("RTEMS");
1388                 return 1;
1389         }
1390 #endif
1391
1392         entry_point = (void (*)(bd_t *))images->ep;
1393
1394         printf("## Transferring control to RTEMS (at address %08lx) ...\n",
1395                 (ulong)entry_point);
1396
1397         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1398
1399         /*
1400          * RTEMS Parameters:
1401          *   r3: ptr to board info data
1402          */
1403         (*entry_point)(gd->bd);
1404
1405         return 1;
1406 }
1407 #endif /* CONFIG_BOOTM_RTEMS */
1408
1409 #if defined(CONFIG_BOOTM_OSE)
1410 static int do_bootm_ose(int flag, int argc, char * const argv[],
1411                            bootm_headers_t *images)
1412 {
1413         void (*entry_point)(void);
1414
1415         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1416                 return 1;
1417
1418 #if defined(CONFIG_FIT)
1419         if (!images->legacy_hdr_valid) {
1420                 fit_unsupported_reset("OSE");
1421                 return 1;
1422         }
1423 #endif
1424
1425         entry_point = (void (*)(void))images->ep;
1426
1427         printf("## Transferring control to OSE (at address %08lx) ...\n",
1428                 (ulong)entry_point);
1429
1430         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1431
1432         /*
1433          * OSE Parameters:
1434          *   None
1435          */
1436         (*entry_point)();
1437
1438         return 1;
1439 }
1440 #endif /* CONFIG_BOOTM_OSE */
1441
1442 #if defined(CONFIG_CMD_ELF)
1443 static int do_bootm_vxworks(int flag, int argc, char * const argv[],
1444                              bootm_headers_t *images)
1445 {
1446         char str[80];
1447
1448         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1449                 return 1;
1450
1451 #if defined(CONFIG_FIT)
1452         if (!images->legacy_hdr_valid) {
1453                 fit_unsupported_reset("VxWorks");
1454                 return 1;
1455         }
1456 #endif
1457
1458         sprintf(str, "%lx", images->ep); /* write entry-point into string */
1459         setenv("loadaddr", str);
1460         do_bootvx(NULL, 0, 0, NULL);
1461
1462         return 1;
1463 }
1464
1465 static int do_bootm_qnxelf(int flag, int argc, char * const argv[],
1466                             bootm_headers_t *images)
1467 {
1468         char *local_args[2];
1469         char str[16];
1470
1471         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1472                 return 1;
1473
1474 #if defined(CONFIG_FIT)
1475         if (!images->legacy_hdr_valid) {
1476                 fit_unsupported_reset("QNX");
1477                 return 1;
1478         }
1479 #endif
1480
1481         sprintf(str, "%lx", images->ep); /* write entry-point into string */
1482         local_args[0] = argv[0];
1483         local_args[1] = str;    /* and provide it via the arguments */
1484         do_bootelf(NULL, 0, 2, local_args);
1485
1486         return 1;
1487 }
1488 #endif
1489
1490 #ifdef CONFIG_INTEGRITY
1491 static int do_bootm_integrity(int flag, int argc, char * const argv[],
1492                            bootm_headers_t *images)
1493 {
1494         void (*entry_point)(void);
1495
1496         if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
1497                 return 1;
1498
1499 #if defined(CONFIG_FIT)
1500         if (!images->legacy_hdr_valid) {
1501                 fit_unsupported_reset("INTEGRITY");
1502                 return 1;
1503         }
1504 #endif
1505
1506         entry_point = (void (*)(void))images->ep;
1507
1508         printf("## Transferring control to INTEGRITY (at address %08lx) ...\n",
1509                 (ulong)entry_point);
1510
1511         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
1512
1513         /*
1514          * INTEGRITY Parameters:
1515          *   None
1516          */
1517         (*entry_point)();
1518
1519         return 1;
1520 }
1521 #endif
1522
1523 #ifdef CONFIG_CMD_BOOTZ
1524
1525 static int __bootz_setup(void *image, void **start, void **end)
1526 {
1527         /* Please define bootz_setup() for your platform */
1528
1529         puts("Your platform's zImage format isn't supported yet!\n");
1530         return -1;
1531 }
1532 int bootz_setup(void *image, void **start, void **end)
1533         __attribute__((weak, alias("__bootz_setup")));
1534
1535 /*
1536  * zImage booting support
1537  */
1538 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
1539                         char * const argv[], bootm_headers_t *images)
1540 {
1541         int ret;
1542         void *zi_start, *zi_end;
1543
1544         memset(images, 0, sizeof(bootm_headers_t));
1545
1546         boot_start_lmb(images);
1547
1548         /* Setup Linux kernel zImage entry point */
1549         if (argc < 2) {
1550                 images->ep = load_addr;
1551                 debug("*  kernel: default image load address = 0x%08lx\n",
1552                                 load_addr);
1553         } else {
1554                 images->ep = simple_strtoul(argv[1], NULL, 16);
1555                 debug("*  kernel: cmdline image address = 0x%08lx\n",
1556                         images->ep);
1557         }
1558
1559         ret = bootz_setup((void *)images->ep, &zi_start, &zi_end);
1560         if (ret != 0)
1561                 return 1;
1562
1563         lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
1564
1565         /* Find ramdisk */
1566         ret = boot_get_ramdisk(argc, argv, images, IH_INITRD_ARCH,
1567                         &images->rd_start, &images->rd_end);
1568         if (ret) {
1569                 puts("Ramdisk image is corrupt or invalid\n");
1570                 return 1;
1571         }
1572
1573 #if defined(CONFIG_OF_LIBFDT)
1574         /* find flattened device tree */
1575         ret = boot_get_fdt(flag, argc, argv, images,
1576                            &images->ft_addr, &images->ft_len);
1577         if (ret) {
1578                 puts("Could not find a valid device tree\n");
1579                 return 1;
1580         }
1581
1582         set_working_fdt_addr(images->ft_addr);
1583 #endif
1584
1585         return 0;
1586 }
1587
1588 static int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1589 {
1590         ulong           iflag;
1591         bootm_headers_t images;
1592
1593         if (bootz_start(cmdtp, flag, argc, argv, &images))
1594                 return 1;
1595
1596         /*
1597          * We have reached the point of no return: we are going to
1598          * overwrite all exception vector code, so we cannot easily
1599          * recover from any failures any more...
1600          */
1601         iflag = disable_interrupts();
1602
1603 #if defined(CONFIG_CMD_USB)
1604         /*
1605          * turn off USB to prevent the host controller from writing to the
1606          * SDRAM while Linux is booting. This could happen (at least for OHCI
1607          * controller), because the HCCA (Host Controller Communication Area)
1608          * lies within the SDRAM and the host controller writes continously to
1609          * this area (as busmaster!). The HccaFrameNumber is for example
1610          * updated every 1 ms within the HCCA structure in SDRAM! For more
1611          * details see the OpenHCI specification.
1612          */
1613         usb_stop();
1614 #endif
1615
1616 #ifdef CONFIG_SILENT_CONSOLE
1617         fixup_silent_linux();
1618 #endif
1619         arch_preboot_os();
1620
1621         do_bootm_linux(0, argc, argv, &images);
1622 #ifdef DEBUG
1623         puts("\n## Control returned to monitor - resetting...\n");
1624 #endif
1625         do_reset(cmdtp, flag, argc, argv);
1626
1627         return 1;
1628 }
1629
1630 U_BOOT_CMD(
1631         bootz,  CONFIG_SYS_MAXARGS,     1,      do_bootz,
1632         "boot Linux zImage image from memory",
1633         "[addr [initrd[:size]] [fdt]]\n"
1634         "    - boot Linux zImage stored in memory\n"
1635         "\tThe argument 'initrd' is optional and specifies the address\n"
1636         "\tof the initrd in memory. The optional argument ':size' allows\n"
1637         "\tspecifying the size of RAW initrd.\n"
1638 #if defined(CONFIG_OF_LIBFDT)
1639         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
1640         "\ta third argument is required which is the address of the\n"
1641         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
1642         "\tuse a '-' for the second argument. If you do not pass a third\n"
1643         "\ta bd_info struct will be passed instead\n"
1644 #endif
1645 );
1646 #endif  /* CONFIG_CMD_BOOTZ */