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  * Boot support
  10  */
  11 #include <common.h>
  12 #include <bootm.h>
  13 #include <command.h>
  14 #include <environment.h>
  15 #include <errno.h>
  16 #include <image.h>
  17 #include <lmb.h>
  18 #include <malloc.h>
  19 #include <nand.h>
  20 #include <asm/byteorder.h>
  21 #include <linux/compiler.h>
  22 #include <linux/ctype.h>
  23 #include <linux/err.h>
  24 #include <u-boot/zlib.h>
  25
  26 DECLARE_GLOBAL_DATA_PTR;
  27
  28 #if defined(CONFIG_CMD_IMI)
  29 static int image_info(unsigned long addr);
  30 #endif
  31
  32 #if defined(CONFIG_CMD_IMLS)
  33 #include <flash.h>
  34 #include <mtd/cfi_flash.h>
  35 extern flash_info_t flash_info[]; /* info for FLASH chips */
  36 #endif
  37
  38 #if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
  39 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  40 #endif
  41
  42 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
  43
  44 /* we overload the cmd field with our state machine info instead of a
  45  * function pointer */
  46 static cmd_tbl_t cmd_bootm_sub[] = {
  47         U_BOOT_CMD_MKENT(start, 0, 1, (void *)BOOTM_STATE_START, "", ""),
  48         U_BOOT_CMD_MKENT(loados, 0, 1, (void *)BOOTM_STATE_LOADOS, "", ""),
  49 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  50         U_BOOT_CMD_MKENT(ramdisk, 0, 1, (void *)BOOTM_STATE_RAMDISK, "", ""),
  51 #endif
  52 #ifdef CONFIG_OF_LIBFDT
  53         U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
  54 #endif
  55         U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
  56         U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
  57         U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
  58         U_BOOT_CMD_MKENT(fake, 0, 1, (void *)BOOTM_STATE_OS_FAKE_GO, "", ""),
  59         U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
  60 };
  61
  62 static int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc,
  63                         char * const argv[])
  64 {
  65         int ret = 0;
  66         long state;
  67         cmd_tbl_t *c;
  68
  69         c = find_cmd_tbl(argv[0], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));
  70         argc--; argv++;
  71
  72         if (c) {
  73                 state = (long)c->cmd;
  74                 if (state == BOOTM_STATE_START)
  75                         state |= BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER;
  76         } else {
  77                 /* Unrecognized command */
  78                 return CMD_RET_USAGE;
  79         }
  80
  81         if (state != BOOTM_STATE_START && images.state >= state) {
  82                 printf("Trying to execute a command out of order\n");
  83                 return CMD_RET_USAGE;
  84         }
  85
  86         ret = do_bootm_states(cmdtp, flag, argc, argv, state, &images, 0);
  87
  88         return ret;
  89 }
  90
  91 /*******************************************************************/
  92 /* bootm - boot application image from image in memory */
  93 /*******************************************************************/
  94
  95 int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  96 {
  97 #ifdef CONFIG_NEEDS_MANUAL_RELOC
  98         static int relocated = 0;
  99
 100         if (!relocated) {
 101                 int i;
 102
 103                 /* relocate names of sub-command table */
 104                 for (i = 0; i < ARRAY_SIZE(cmd_bootm_sub); i++)
 105                         cmd_bootm_sub[i].name += gd->reloc_off;
 106
 107                 relocated = 1;
 108         }
 109 #endif
 110
 111         /* determine if we have a sub command */
 112         argc--; argv++;
 113         if (argc > 0) {
 114                 char *endp;
 115
 116                 simple_strtoul(argv[0], &endp, 16);
 117                 /* endp pointing to NULL means that argv[0] was just a
 118                  * valid number, pass it along to the normal bootm processing
 119                  *
 120                  * If endp is ':' or '#' assume a FIT identifier so pass
 121                  * along for normal processing.
 122                  *
 123                  * Right now we assume the first arg should never be '-'
 124                  */
 125                 if ((*endp != 0) && (*endp != ':') && (*endp != '#'))
 126                         return do_bootm_subcommand(cmdtp, flag, argc, argv);
 127         }
 128
 129         return do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START |
 130                 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER |
 131                 BOOTM_STATE_LOADOS |
 132 #if defined(CONFIG_PPC) || defined(CONFIG_MIPS)
 133                 BOOTM_STATE_OS_CMDLINE |
 134 #endif
 135                 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 136                 BOOTM_STATE_OS_GO, &images, 1);
 137 }
 138
 139 int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
 140 {
 141         const char *ep = getenv("autostart");
 142
 143         if (ep && !strcmp(ep, "yes")) {
 144                 char *local_args[2];
 145                 local_args[0] = (char *)cmd;
 146                 local_args[1] = NULL;
 147                 printf("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
 148                 return do_bootm(cmdtp, 0, 1, local_args);
 149         }
 150
 151         return 0;
 152 }
 153
 154 #ifdef CONFIG_SYS_LONGHELP
 155 static char bootm_help_text[] =
 156         "[addr [arg ...]]\n    - boot application image stored in memory\n"
 157         "\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
 158         "\t'arg' can be the address of an initrd image\n"
 159 #if defined(CONFIG_OF_LIBFDT)
 160         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
 161         "\ta third argument is required which is the address of the\n"
 162         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
 163         "\tuse a '-' for the second argument. If you do not pass a third\n"
 164         "\ta bd_info struct will be passed instead\n"
 165 #endif
 166 #if defined(CONFIG_FIT)
 167         "\t\nFor the new multi component uImage format (FIT) addresses\n"
 168         "\tmust be extened to include component or configuration unit name:\n"
 169         "\taddr:<subimg_uname> - direct component image specification\n"
 170         "\taddr#<conf_uname>   - configuration specification\n"
 171         "\tUse iminfo command to get the list of existing component\n"
 172         "\timages and configurations.\n"
 173 #endif
 174         "\nSub-commands to do part of the bootm sequence.  The sub-commands "
 175         "must be\n"
 176         "issued in the order below (it's ok to not issue all sub-commands):\n"
 177         "\tstart [addr [arg ...]]\n"
 178         "\tloados  - load OS image\n"
 179 #if defined(CONFIG_SYS_BOOT_RAMDISK_HIGH)
 180         "\tramdisk - relocate initrd, set env initrd_start/initrd_end\n"
 181 #endif
 182 #if defined(CONFIG_OF_LIBFDT)
 183         "\tfdt     - relocate flat device tree\n"
 184 #endif
 185         "\tcmdline - OS specific command line processing/setup\n"
 186         "\tbdt     - OS specific bd_t processing\n"
 187         "\tprep    - OS specific prep before relocation or go\n"
 188 #if defined(CONFIG_TRACE)
 189         "\tfake    - OS specific fake start without go\n"
 190 #endif
 191         "\tgo      - start OS";
 192 #endif
 193
 194 U_BOOT_CMD(
 195         bootm,  CONFIG_SYS_MAXARGS,     1,      do_bootm,
 196         "boot application image from memory", bootm_help_text
 197 );
 198
 199 /*******************************************************************/
 200 /* bootd - boot default image */
 201 /*******************************************************************/
 202 #if defined(CONFIG_CMD_BOOTD)
 203 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 204 {
 205         return run_command(getenv("bootcmd"), flag);
 206 }
 207
 208 U_BOOT_CMD(
 209         boot,   1,      1,      do_bootd,
 210         "boot default, i.e., run 'bootcmd'",
 211         ""
 212 );
 213
 214 /* keep old command name "bootd" for backward compatibility */
 215 U_BOOT_CMD(
 216         bootd, 1,       1,      do_bootd,
 217         "boot default, i.e., run 'bootcmd'",
 218         ""
 219 );
 220
 221 #endif
 222
 223
 224 /*******************************************************************/
 225 /* iminfo - print header info for a requested image */
 226 /*******************************************************************/
 227 #if defined(CONFIG_CMD_IMI)
 228 static int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 229 {
 230         int     arg;
 231         ulong   addr;
 232         int     rcode = 0;
 233
 234         if (argc < 2) {
 235                 return image_info(load_addr);
 236         }
 237
 238         for (arg = 1; arg < argc; ++arg) {
 239                 addr = simple_strtoul(argv[arg], NULL, 16);
 240                 if (image_info(addr) != 0)
 241                         rcode = 1;
 242         }
 243         return rcode;
 244 }
 245
 246 static int image_info(ulong addr)
 247 {
 248         void *hdr = (void *)addr;
 249
 250         printf("\n## Checking Image at %08lx ...\n", addr);
 251
 252         switch (genimg_get_format(hdr)) {
 253 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 254         case IMAGE_FORMAT_LEGACY:
 255                 puts("   Legacy image found\n");
 256                 if (!image_check_magic(hdr)) {
 257                         puts("   Bad Magic Number\n");
 258                         return 1;
 259                 }
 260
 261                 if (!image_check_hcrc(hdr)) {
 262                         puts("   Bad Header Checksum\n");
 263                         return 1;
 264                 }
 265
 266                 image_print_contents(hdr);
 267
 268                 puts("   Verifying Checksum ... ");
 269                 if (!image_check_dcrc(hdr)) {
 270                         puts("   Bad Data CRC\n");
 271                         return 1;
 272                 }
 273                 puts("OK\n");
 274                 return 0;
 275 #endif
 276 #if defined(CONFIG_FIT)
 277         case IMAGE_FORMAT_FIT:
 278                 puts("   FIT image found\n");
 279
 280                 if (!fit_check_format(hdr)) {
 281                         puts("Bad FIT image format!\n");
 282                         return 1;
 283                 }
 284
 285                 fit_print_contents(hdr);
 286
 287                 if (!fit_all_image_verify(hdr)) {
 288                         puts("Bad hash in FIT image!\n");
 289                         return 1;
 290                 }
 291
 292                 return 0;
 293 #endif
 294         default:
 295                 puts("Unknown image format!\n");
 296                 break;
 297         }
 298
 299         return 1;
 300 }
 301
 302 U_BOOT_CMD(
 303         iminfo, CONFIG_SYS_MAXARGS,     1,      do_iminfo,
 304         "print header information for application image",
 305         "addr [addr ...]\n"
 306         "    - print header information for application image starting at\n"
 307         "      address 'addr' in memory; this includes verification of the\n"
 308         "      image contents (magic number, header and payload checksums)"
 309 );
 310 #endif
 311
 312
 313 /*******************************************************************/
 314 /* imls - list all images found in flash */
 315 /*******************************************************************/
 316 #if defined(CONFIG_CMD_IMLS)
 317 static int do_imls_nor(void)
 318 {
 319         flash_info_t *info;
 320         int i, j;
 321         void *hdr;
 322
 323         for (i = 0, info = &flash_info[0];
 324                 i < CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
 325
 326                 if (info->flash_id == FLASH_UNKNOWN)
 327                         goto next_bank;
 328                 for (j = 0; j < info->sector_count; ++j) {
 329
 330                         hdr = (void *)info->start[j];
 331                         if (!hdr)
 332                                 goto next_sector;
 333
 334                         switch (genimg_get_format(hdr)) {
 335 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 336                         case IMAGE_FORMAT_LEGACY:
 337                                 if (!image_check_hcrc(hdr))
 338                                         goto next_sector;
 339
 340                                 printf("Legacy Image at %08lX:\n", (ulong)hdr);
 341                                 image_print_contents(hdr);
 342
 343                                 puts("   Verifying Checksum ... ");
 344                                 if (!image_check_dcrc(hdr)) {
 345                                         puts("Bad Data CRC\n");
 346                                 } else {
 347                                         puts("OK\n");
 348                                 }
 349                                 break;
 350 #endif
 351 #if defined(CONFIG_FIT)
 352                         case IMAGE_FORMAT_FIT:
 353                                 if (!fit_check_format(hdr))
 354                                         goto next_sector;
 355
 356                                 printf("FIT Image at %08lX:\n", (ulong)hdr);
 357                                 fit_print_contents(hdr);
 358                                 break;
 359 #endif
 360                         default:
 361                                 goto next_sector;
 362                         }
 363
 364 next_sector:            ;
 365                 }
 366 next_bank:      ;
 367         }
 368         return 0;
 369 }
 370 #endif
 371
 372 #if defined(CONFIG_CMD_IMLS_NAND)
 373 static int nand_imls_legacyimage(nand_info_t *nand, int nand_dev, loff_t off,
 374                 size_t len)
 375 {
 376         void *imgdata;
 377         int ret;
 378
 379         imgdata = malloc(len);
 380         if (!imgdata) {
 381                 printf("May be a Legacy Image at NAND device %d offset %08llX:\n",
 382                                 nand_dev, off);
 383                 printf("   Low memory(cannot allocate memory for image)\n");
 384                 return -ENOMEM;
 385         }
 386
 387         ret = nand_read_skip_bad(nand, off, &len,
 388                         imgdata);
 389         if (ret < 0 && ret != -EUCLEAN) {
 390                 free(imgdata);
 391                 return ret;
 392         }
 393
 394         if (!image_check_hcrc(imgdata)) {
 395                 free(imgdata);
 396                 return 0;
 397         }
 398
 399         printf("Legacy Image at NAND device %d offset %08llX:\n",
 400                         nand_dev, off);
 401         image_print_contents(imgdata);
 402
 403         puts("   Verifying Checksum ... ");
 404         if (!image_check_dcrc(imgdata))
 405                 puts("Bad Data CRC\n");
 406         else
 407                 puts("OK\n");
 408
 409         free(imgdata);
 410
 411         return 0;
 412 }
 413
 414 static int nand_imls_fitimage(nand_info_t *nand, int nand_dev, loff_t off,
 415                 size_t len)
 416 {
 417         void *imgdata;
 418         int ret;
 419
 420         imgdata = malloc(len);
 421         if (!imgdata) {
 422                 printf("May be a FIT Image at NAND device %d offset %08llX:\n",
 423                                 nand_dev, off);
 424                 printf("   Low memory(cannot allocate memory for image)\n");
 425                 return -ENOMEM;
 426         }
 427
 428         ret = nand_read_skip_bad(nand, off, &len,
 429                         imgdata);
 430         if (ret < 0 && ret != -EUCLEAN) {
 431                 free(imgdata);
 432                 return ret;
 433         }
 434
 435         if (!fit_check_format(imgdata)) {
 436                 free(imgdata);
 437                 return 0;
 438         }
 439
 440         printf("FIT Image at NAND device %d offset %08llX:\n", nand_dev, off);
 441
 442         fit_print_contents(imgdata);
 443         free(imgdata);
 444
 445         return 0;
 446 }
 447
 448 static int do_imls_nand(void)
 449 {
 450         nand_info_t *nand;
 451         int nand_dev = nand_curr_device;
 452         size_t len;
 453         loff_t off;
 454         u32 buffer[16];
 455
 456         if (nand_dev < 0 || nand_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
 457                 puts("\nNo NAND devices available\n");
 458                 return -ENODEV;
 459         }
 460
 461         printf("\n");
 462
 463         for (nand_dev = 0; nand_dev < CONFIG_SYS_MAX_NAND_DEVICE; nand_dev++) {
 464                 nand = &nand_info[nand_dev];
 465                 if (!nand->name || !nand->size)
 466                         continue;
 467
 468                 for (off = 0; off < nand->size; off += nand->erasesize) {
 469                         const image_header_t *header;
 470                         int ret;
 471
 472                         if (nand_block_isbad(nand, off))
 473                                 continue;
 474
 475                         len = sizeof(buffer);
 476
 477                         ret = nand_read(nand, off, &len, (u8 *)buffer);
 478                         if (ret < 0 && ret != -EUCLEAN) {
 479                                 printf("NAND read error %d at offset %08llX\n",
 480                                                 ret, off);
 481                                 continue;
 482                         }
 483
 484                         switch (genimg_get_format(buffer)) {
 485 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 486                         case IMAGE_FORMAT_LEGACY:
 487                                 header = (const image_header_t *)buffer;
 488
 489                                 len = image_get_image_size(header);
 490                                 nand_imls_legacyimage(nand, nand_dev, off, len);
 491                                 break;
 492 #endif
 493 #if defined(CONFIG_FIT)
 494                         case IMAGE_FORMAT_FIT:
 495                                 len = fit_get_size(buffer);
 496                                 nand_imls_fitimage(nand, nand_dev, off, len);
 497                                 break;
 498 #endif
 499                         }
 500                 }
 501         }
 502
 503         return 0;
 504 }
 505 #endif
 506
 507 #if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
 508 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 509 {
 510         int ret_nor = 0, ret_nand = 0;
 511
 512 #if defined(CONFIG_CMD_IMLS)
 513         ret_nor = do_imls_nor();
 514 #endif
 515
 516 #if defined(CONFIG_CMD_IMLS_NAND)
 517         ret_nand = do_imls_nand();
 518 #endif
 519
 520         if (ret_nor)
 521                 return ret_nor;
 522
 523         if (ret_nand)
 524                 return ret_nand;
 525
 526         return (0);
 527 }
 528
 529 U_BOOT_CMD(
 530         imls,   1,              1,      do_imls,
 531         "list all images found in flash",
 532         "\n"
 533         "    - Prints information about all images found at sector/block\n"
 534         "      boundaries in nor/nand flash."
 535 );
 536 #endif
 537
 538 #ifdef CONFIG_CMD_BOOTZ
 539
 540 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
 541 {
 542         /* Please define bootz_setup() for your platform */
 543
 544         puts("Your platform's zImage format isn't supported yet!\n");
 545         return -1;
 546 }
 547
 548 /*
 549  * zImage booting support
 550  */
 551 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
 552                         char * const argv[], bootm_headers_t *images)
 553 {
 554         int ret;
 555         ulong zi_start, zi_end;
 556
 557         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
 558                               images, 1);
 559
 560         /* Setup Linux kernel zImage entry point */
 561         if (!argc) {
 562                 images->ep = load_addr;
 563                 debug("*  kernel: default image load address = 0x%08lx\n",
 564                                 load_addr);
 565         } else {
 566                 images->ep = simple_strtoul(argv[0], NULL, 16);
 567                 debug("*  kernel: cmdline image address = 0x%08lx\n",
 568                         images->ep);
 569         }
 570
 571         ret = bootz_setup(images->ep, &zi_start, &zi_end);
 572         if (ret != 0)
 573                 return 1;
 574
 575         lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
 576
 577         /*
 578          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
 579          * have a header that provide this informaiton.
 580          */
 581         if (bootm_find_ramdisk_fdt(flag, argc, argv))
 582                 return 1;
 583
 584         return 0;
 585 }
 586
 587 int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 588 {
 589         int ret;
 590
 591         /* Consume 'bootz' */
 592         argc--; argv++;
 593
 594         if (bootz_start(cmdtp, flag, argc, argv, &images))
 595                 return 1;
 596
 597         /*
 598          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 599          * disable interrupts ourselves
 600          */
 601         bootm_disable_interrupts();
 602
 603         images.os.os = IH_OS_LINUX;
 604         ret = do_bootm_states(cmdtp, flag, argc, argv,
 605                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 606                               BOOTM_STATE_OS_GO,
 607                               &images, 1);
 608
 609         return ret;
 610 }
 611
 612 #ifdef CONFIG_SYS_LONGHELP
 613 static char bootz_help_text[] =
 614         "[addr [initrd[:size]] [fdt]]\n"
 615         "    - boot Linux zImage stored in memory\n"
 616         "\tThe argument 'initrd' is optional and specifies the address\n"
 617         "\tof the initrd in memory. The optional argument ':size' allows\n"
 618         "\tspecifying the size of RAW initrd.\n"
 619 #if defined(CONFIG_OF_LIBFDT)
 620         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
 621         "\ta third argument is required which is the address of the\n"
 622         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
 623         "\tuse a '-' for the second argument. If you do not pass a third\n"
 624         "\ta bd_info struct will be passed instead\n"
 625 #endif
 626         "";
 627 #endif
 628
 629 U_BOOT_CMD(
 630         bootz,  CONFIG_SYS_MAXARGS,     1,      do_bootz,
 631         "boot Linux zImage image from memory", bootz_help_text
 632 );
 633 #endif  /* CONFIG_CMD_BOOTZ */
 634
 635 #ifdef CONFIG_CMD_BOOTI
 636 /* See Documentation/arm64/booting.txt in the Linux kernel */
 637 struct Image_header {
 638         uint32_t        code0;          /* Executable code */
 639         uint32_t        code1;          /* Executable code */
 640         uint64_t        text_offset;    /* Image load offset, LE */
 641         uint64_t        image_size;     /* Effective Image size, LE */
 642         uint64_t        res1;           /* reserved */
 643         uint64_t        res2;           /* reserved */
 644         uint64_t        res3;           /* reserved */
 645         uint64_t        res4;           /* reserved */
 646         uint32_t        magic;          /* Magic number */
 647         uint32_t        res5;
 648 };
 649
 650 #define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
 651
 652 static int booti_setup(bootm_headers_t *images)
 653 {
 654         struct Image_header *ih;
 655         uint64_t dst;
 656
 657         ih = (struct Image_header *)map_sysmem(images->ep, 0);
 658
 659         if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
 660                 puts("Bad Linux ARM64 Image magic!\n");
 661                 return 1;
 662         }
 663
 664         if (ih->image_size == 0) {
 665                 puts("Image lacks image_size field, assuming 16MiB\n");
 666                 ih->image_size = (16 << 20);
 667         }
 668
 669         /*
 670          * If we are not at the correct run-time location, set the new
 671          * correct location and then move the image there.
 672          */
 673         dst = gd->bd->bi_dram[0].start + le32_to_cpu(ih->text_offset);
 674         if (images->ep != dst) {
 675                 void *src;
 676
 677                 debug("Moving Image from 0x%lx to 0x%llx\n", images->ep, dst);
 678
 679                 src = (void *)images->ep;
 680                 images->ep = dst;
 681                 memmove((void *)dst, src, le32_to_cpu(ih->image_size));
 682         }
 683
 684         return 0;
 685 }
 686
 687 /*
 688  * Image booting support
 689  */
 690 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
 691                         char * const argv[], bootm_headers_t *images)
 692 {
 693         int ret;
 694         struct Image_header *ih;
 695
 696         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
 697                               images, 1);
 698
 699         /* Setup Linux kernel Image entry point */
 700         if (!argc) {
 701                 images->ep = load_addr;
 702                 debug("*  kernel: default image load address = 0x%08lx\n",
 703                                 load_addr);
 704         } else {
 705                 images->ep = simple_strtoul(argv[0], NULL, 16);
 706                 debug("*  kernel: cmdline image address = 0x%08lx\n",
 707                         images->ep);
 708         }
 709
 710         ret = booti_setup(images);
 711         if (ret != 0)
 712                 return 1;
 713
 714         ih = (struct Image_header *)map_sysmem(images->ep, 0);
 715
 716         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(ih->image_size));
 717
 718         /*
 719          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
 720          * have a header that provide this informaiton.
 721          */
 722         if (bootm_find_ramdisk_fdt(flag, argc, argv))
 723                 return 1;
 724
 725         return 0;
 726 }
 727
 728 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 729 {
 730         int ret;
 731
 732         /* Consume 'booti' */
 733         argc--; argv++;
 734
 735         if (booti_start(cmdtp, flag, argc, argv, &images))
 736                 return 1;
 737
 738         /*
 739          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 740          * disable interrupts ourselves
 741          */
 742         bootm_disable_interrupts();
 743
 744         images.os.os = IH_OS_LINUX;
 745         ret = do_bootm_states(cmdtp, flag, argc, argv,
 746                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 747                               BOOTM_STATE_OS_GO,
 748                               &images, 1);
 749
 750         return ret;
 751 }
 752
 753 #ifdef CONFIG_SYS_LONGHELP
 754 static char booti_help_text[] =
 755         "[addr [initrd[:size]] [fdt]]\n"
 756         "    - boot Linux Image stored in memory\n"
 757         "\tThe argument 'initrd' is optional and specifies the address\n"
 758         "\tof the initrd in memory. The optional argument ':size' allows\n"
 759         "\tspecifying the size of RAW initrd.\n"
 760 #if defined(CONFIG_OF_LIBFDT)
 761         "\tSince booting a Linux kernelrequires a flat device-tree\n"
 762         "\ta third argument is required which is the address of the\n"
 763         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
 764         "\tuse a '-' for the second argument.\n"
 765 #endif
 766         "";
 767 #endif
 768
 769 U_BOOT_CMD(
 770         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 771         "boot arm64 Linux Image image from memory", booti_help_text
 772 );
 773 #endif  /* CONFIG_CMD_BOOTI */