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 <mapmem.h>
  20 #include <nand.h>
  21 #include <asm/byteorder.h>
  22 #include <linux/compiler.h>
  23 #include <linux/ctype.h>
  24 #include <linux/err.h>
  25 #include <u-boot/zlib.h>
  26
  27 DECLARE_GLOBAL_DATA_PTR;
  28
  29 #if defined(CONFIG_CMD_IMI)
  30 static int image_info(unsigned long addr);
  31 #endif
  32
  33 #if defined(CONFIG_CMD_IMLS)
  34 #include <flash.h>
  35 #include <mtd/cfi_flash.h>
  36 extern flash_info_t flash_info[]; /* info for FLASH chips */
  37 #endif
  38
  39 #if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
  40 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  41 #endif
  42
  43 bootm_headers_t images;         /* pointers to os/initrd/fdt images */
  44
  45 /* we overload the cmd field with our state machine info instead of a
  46  * function pointer */
  47 static cmd_tbl_t cmd_bootm_sub[] = {
  48         U_BOOT_CMD_MKENT(start, 0, 1, (void *)BOOTM_STATE_START, "", ""),
  49         U_BOOT_CMD_MKENT(loados, 0, 1, (void *)BOOTM_STATE_LOADOS, "", ""),
  50 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  51         U_BOOT_CMD_MKENT(ramdisk, 0, 1, (void *)BOOTM_STATE_RAMDISK, "", ""),
  52 #endif
  53 #ifdef CONFIG_OF_LIBFDT
  54         U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
  55 #endif
  56         U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
  57         U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
  58         U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
  59         U_BOOT_CMD_MKENT(fake, 0, 1, (void *)BOOTM_STATE_OS_FAKE_GO, "", ""),
  60         U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
  61 };
  62
  63 static int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc,
  64                         char * const argv[])
  65 {
  66         int ret = 0;
  67         long state;
  68         cmd_tbl_t *c;
  69
  70         c = find_cmd_tbl(argv[0], &cmd_bootm_sub[0], ARRAY_SIZE(cmd_bootm_sub));
  71         argc--; argv++;
  72
  73         if (c) {
  74                 state = (long)c->cmd;
  75                 if (state == BOOTM_STATE_START)
  76                         state |= BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER;
  77         } else {
  78                 /* Unrecognized command */
  79                 return CMD_RET_USAGE;
  80         }
  81
  82         if (((state & BOOTM_STATE_START) != BOOTM_STATE_START) &&
  83             images.state >= state) {
  84                 printf("Trying to execute a command out of order\n");
  85                 return CMD_RET_USAGE;
  86         }
  87
  88         ret = do_bootm_states(cmdtp, flag, argc, argv, state, &images, 0);
  89
  90         return ret;
  91 }
  92
  93 /*******************************************************************/
  94 /* bootm - boot application image from image in memory */
  95 /*******************************************************************/
  96
  97 int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  98 {
  99 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 100         static int relocated = 0;
 101
 102         if (!relocated) {
 103                 int i;
 104
 105                 /* relocate names of sub-command table */
 106                 for (i = 0; i < ARRAY_SIZE(cmd_bootm_sub); i++)
 107                         cmd_bootm_sub[i].name += gd->reloc_off;
 108
 109                 relocated = 1;
 110         }
 111 #endif
 112
 113         /* determine if we have a sub command */
 114         argc--; argv++;
 115         if (argc > 0) {
 116                 char *endp;
 117
 118                 simple_strtoul(argv[0], &endp, 16);
 119                 /* endp pointing to NULL means that argv[0] was just a
 120                  * valid number, pass it along to the normal bootm processing
 121                  *
 122                  * If endp is ':' or '#' assume a FIT identifier so pass
 123                  * along for normal processing.
 124                  *
 125                  * Right now we assume the first arg should never be '-'
 126                  */
 127                 if ((*endp != 0) && (*endp != ':') && (*endp != '#'))
 128                         return do_bootm_subcommand(cmdtp, flag, argc, argv);
 129         }
 130
 131         return do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START |
 132                 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER |
 133                 BOOTM_STATE_LOADOS |
 134 #if defined(CONFIG_PPC) || defined(CONFIG_MIPS)
 135                 BOOTM_STATE_OS_CMDLINE |
 136 #endif
 137                 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 138                 BOOTM_STATE_OS_GO, &images, 1);
 139 }
 140
 141 int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
 142 {
 143         const char *ep = getenv("autostart");
 144
 145         if (ep && !strcmp(ep, "yes")) {
 146                 char *local_args[2];
 147                 local_args[0] = (char *)cmd;
 148                 local_args[1] = NULL;
 149                 printf("Automatic boot of image at addr 0x%08lX ...\n", load_addr);
 150                 return do_bootm(cmdtp, 0, 1, local_args);
 151         }
 152
 153         return 0;
 154 }
 155
 156 #ifdef CONFIG_SYS_LONGHELP
 157 static char bootm_help_text[] =
 158         "[addr [arg ...]]\n    - boot application image stored in memory\n"
 159         "\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
 160         "\t'arg' can be the address of an initrd image\n"
 161 #if defined(CONFIG_OF_LIBFDT)
 162         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
 163         "\ta third argument is required which is the address of the\n"
 164         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
 165         "\tuse a '-' for the second argument. If you do not pass a third\n"
 166         "\ta bd_info struct will be passed instead\n"
 167 #endif
 168 #if defined(CONFIG_FIT)
 169         "\t\nFor the new multi component uImage format (FIT) addresses\n"
 170         "\tmust be extened to include component or configuration unit name:\n"
 171         "\taddr:<subimg_uname> - direct component image specification\n"
 172         "\taddr#<conf_uname>   - configuration specification\n"
 173         "\tUse iminfo command to get the list of existing component\n"
 174         "\timages and configurations.\n"
 175 #endif
 176         "\nSub-commands to do part of the bootm sequence.  The sub-commands "
 177         "must be\n"
 178         "issued in the order below (it's ok to not issue all sub-commands):\n"
 179         "\tstart [addr [arg ...]]\n"
 180         "\tloados  - load OS image\n"
 181 #if defined(CONFIG_SYS_BOOT_RAMDISK_HIGH)
 182         "\tramdisk - relocate initrd, set env initrd_start/initrd_end\n"
 183 #endif
 184 #if defined(CONFIG_OF_LIBFDT)
 185         "\tfdt     - relocate flat device tree\n"
 186 #endif
 187         "\tcmdline - OS specific command line processing/setup\n"
 188         "\tbdt     - OS specific bd_t processing\n"
 189         "\tprep    - OS specific prep before relocation or go\n"
 190 #if defined(CONFIG_TRACE)
 191         "\tfake    - OS specific fake start without go\n"
 192 #endif
 193         "\tgo      - start OS";
 194 #endif
 195
 196 U_BOOT_CMD(
 197         bootm,  CONFIG_SYS_MAXARGS,     1,      do_bootm,
 198         "boot application image from memory", bootm_help_text
 199 );
 200
 201 /*******************************************************************/
 202 /* bootd - boot default image */
 203 /*******************************************************************/
 204 #if defined(CONFIG_CMD_BOOTD)
 205 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 206 {
 207         return run_command(getenv("bootcmd"), flag);
 208 }
 209
 210 U_BOOT_CMD(
 211         boot,   1,      1,      do_bootd,
 212         "boot default, i.e., run 'bootcmd'",
 213         ""
 214 );
 215
 216 /* keep old command name "bootd" for backward compatibility */
 217 U_BOOT_CMD(
 218         bootd, 1,       1,      do_bootd,
 219         "boot default, i.e., run 'bootcmd'",
 220         ""
 221 );
 222
 223 #endif
 224
 225
 226 /*******************************************************************/
 227 /* iminfo - print header info for a requested image */
 228 /*******************************************************************/
 229 #if defined(CONFIG_CMD_IMI)
 230 static int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 231 {
 232         int     arg;
 233         ulong   addr;
 234         int     rcode = 0;
 235
 236         if (argc < 2) {
 237                 return image_info(load_addr);
 238         }
 239
 240         for (arg = 1; arg < argc; ++arg) {
 241                 addr = simple_strtoul(argv[arg], NULL, 16);
 242                 if (image_info(addr) != 0)
 243                         rcode = 1;
 244         }
 245         return rcode;
 246 }
 247
 248 static int image_info(ulong addr)
 249 {
 250         void *hdr = (void *)addr;
 251
 252         printf("\n## Checking Image at %08lx ...\n", addr);
 253
 254         switch (genimg_get_format(hdr)) {
 255 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 256         case IMAGE_FORMAT_LEGACY:
 257                 puts("   Legacy image found\n");
 258                 if (!image_check_magic(hdr)) {
 259                         puts("   Bad Magic Number\n");
 260                         return 1;
 261                 }
 262
 263                 if (!image_check_hcrc(hdr)) {
 264                         puts("   Bad Header Checksum\n");
 265                         return 1;
 266                 }
 267
 268                 image_print_contents(hdr);
 269
 270                 puts("   Verifying Checksum ... ");
 271                 if (!image_check_dcrc(hdr)) {
 272                         puts("   Bad Data CRC\n");
 273                         return 1;
 274                 }
 275                 puts("OK\n");
 276                 return 0;
 277 #endif
 278 #if defined(CONFIG_FIT)
 279         case IMAGE_FORMAT_FIT:
 280                 puts("   FIT image found\n");
 281
 282                 if (!fit_check_format(hdr)) {
 283                         puts("Bad FIT image format!\n");
 284                         return 1;
 285                 }
 286
 287                 fit_print_contents(hdr);
 288
 289                 if (!fit_all_image_verify(hdr)) {
 290                         puts("Bad hash in FIT image!\n");
 291                         return 1;
 292                 }
 293
 294                 return 0;
 295 #endif
 296         default:
 297                 puts("Unknown image format!\n");
 298                 break;
 299         }
 300
 301         return 1;
 302 }
 303
 304 U_BOOT_CMD(
 305         iminfo, CONFIG_SYS_MAXARGS,     1,      do_iminfo,
 306         "print header information for application image",
 307         "addr [addr ...]\n"
 308         "    - print header information for application image starting at\n"
 309         "      address 'addr' in memory; this includes verification of the\n"
 310         "      image contents (magic number, header and payload checksums)"
 311 );
 312 #endif
 313
 314
 315 /*******************************************************************/
 316 /* imls - list all images found in flash */
 317 /*******************************************************************/
 318 #if defined(CONFIG_CMD_IMLS)
 319 static int do_imls_nor(void)
 320 {
 321         flash_info_t *info;
 322         int i, j;
 323         void *hdr;
 324
 325         for (i = 0, info = &flash_info[0];
 326                 i < CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
 327
 328                 if (info->flash_id == FLASH_UNKNOWN)
 329                         goto next_bank;
 330                 for (j = 0; j < info->sector_count; ++j) {
 331
 332                         hdr = (void *)info->start[j];
 333                         if (!hdr)
 334                                 goto next_sector;
 335
 336                         switch (genimg_get_format(hdr)) {
 337 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 338                         case IMAGE_FORMAT_LEGACY:
 339                                 if (!image_check_hcrc(hdr))
 340                                         goto next_sector;
 341
 342                                 printf("Legacy Image at %08lX:\n", (ulong)hdr);
 343                                 image_print_contents(hdr);
 344
 345                                 puts("   Verifying Checksum ... ");
 346                                 if (!image_check_dcrc(hdr)) {
 347                                         puts("Bad Data CRC\n");
 348                                 } else {
 349                                         puts("OK\n");
 350                                 }
 351                                 break;
 352 #endif
 353 #if defined(CONFIG_FIT)
 354                         case IMAGE_FORMAT_FIT:
 355                                 if (!fit_check_format(hdr))
 356                                         goto next_sector;
 357
 358                                 printf("FIT Image at %08lX:\n", (ulong)hdr);
 359                                 fit_print_contents(hdr);
 360                                 break;
 361 #endif
 362                         default:
 363                                 goto next_sector;
 364                         }
 365
 366 next_sector:            ;
 367                 }
 368 next_bank:      ;
 369         }
 370         return 0;
 371 }
 372 #endif
 373
 374 #if defined(CONFIG_CMD_IMLS_NAND)
 375 static int nand_imls_legacyimage(nand_info_t *nand, int nand_dev, loff_t off,
 376                 size_t len)
 377 {
 378         void *imgdata;
 379         int ret;
 380
 381         imgdata = malloc(len);
 382         if (!imgdata) {
 383                 printf("May be a Legacy Image at NAND device %d offset %08llX:\n",
 384                                 nand_dev, off);
 385                 printf("   Low memory(cannot allocate memory for image)\n");
 386                 return -ENOMEM;
 387         }
 388
 389         ret = nand_read_skip_bad(nand, off, &len,
 390                         imgdata);
 391         if (ret < 0 && ret != -EUCLEAN) {
 392                 free(imgdata);
 393                 return ret;
 394         }
 395
 396         if (!image_check_hcrc(imgdata)) {
 397                 free(imgdata);
 398                 return 0;
 399         }
 400
 401         printf("Legacy Image at NAND device %d offset %08llX:\n",
 402                         nand_dev, off);
 403         image_print_contents(imgdata);
 404
 405         puts("   Verifying Checksum ... ");
 406         if (!image_check_dcrc(imgdata))
 407                 puts("Bad Data CRC\n");
 408         else
 409                 puts("OK\n");
 410
 411         free(imgdata);
 412
 413         return 0;
 414 }
 415
 416 static int nand_imls_fitimage(nand_info_t *nand, int nand_dev, loff_t off,
 417                 size_t len)
 418 {
 419         void *imgdata;
 420         int ret;
 421
 422         imgdata = malloc(len);
 423         if (!imgdata) {
 424                 printf("May be a FIT Image at NAND device %d offset %08llX:\n",
 425                                 nand_dev, off);
 426                 printf("   Low memory(cannot allocate memory for image)\n");
 427                 return -ENOMEM;
 428         }
 429
 430         ret = nand_read_skip_bad(nand, off, &len,
 431                         imgdata);
 432         if (ret < 0 && ret != -EUCLEAN) {
 433                 free(imgdata);
 434                 return ret;
 435         }
 436
 437         if (!fit_check_format(imgdata)) {
 438                 free(imgdata);
 439                 return 0;
 440         }
 441
 442         printf("FIT Image at NAND device %d offset %08llX:\n", nand_dev, off);
 443
 444         fit_print_contents(imgdata);
 445         free(imgdata);
 446
 447         return 0;
 448 }
 449
 450 static int do_imls_nand(void)
 451 {
 452         nand_info_t *nand;
 453         int nand_dev = nand_curr_device;
 454         size_t len;
 455         loff_t off;
 456         u32 buffer[16];
 457
 458         if (nand_dev < 0 || nand_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
 459                 puts("\nNo NAND devices available\n");
 460                 return -ENODEV;
 461         }
 462
 463         printf("\n");
 464
 465         for (nand_dev = 0; nand_dev < CONFIG_SYS_MAX_NAND_DEVICE; nand_dev++) {
 466                 nand = &nand_info[nand_dev];
 467                 if (!nand->name || !nand->size)
 468                         continue;
 469
 470                 for (off = 0; off < nand->size; off += nand->erasesize) {
 471                         const image_header_t *header;
 472                         int ret;
 473
 474                         if (nand_block_isbad(nand, off))
 475                                 continue;
 476
 477                         len = sizeof(buffer);
 478
 479                         ret = nand_read(nand, off, &len, (u8 *)buffer);
 480                         if (ret < 0 && ret != -EUCLEAN) {
 481                                 printf("NAND read error %d at offset %08llX\n",
 482                                                 ret, off);
 483                                 continue;
 484                         }
 485
 486                         switch (genimg_get_format(buffer)) {
 487 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 488                         case IMAGE_FORMAT_LEGACY:
 489                                 header = (const image_header_t *)buffer;
 490
 491                                 len = image_get_image_size(header);
 492                                 nand_imls_legacyimage(nand, nand_dev, off, len);
 493                                 break;
 494 #endif
 495 #if defined(CONFIG_FIT)
 496                         case IMAGE_FORMAT_FIT:
 497                                 len = fit_get_size(buffer);
 498                                 nand_imls_fitimage(nand, nand_dev, off, len);
 499                                 break;
 500 #endif
 501                         }
 502                 }
 503         }
 504
 505         return 0;
 506 }
 507 #endif
 508
 509 #if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
 510 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 511 {
 512         int ret_nor = 0, ret_nand = 0;
 513
 514 #if defined(CONFIG_CMD_IMLS)
 515         ret_nor = do_imls_nor();
 516 #endif
 517
 518 #if defined(CONFIG_CMD_IMLS_NAND)
 519         ret_nand = do_imls_nand();
 520 #endif
 521
 522         if (ret_nor)
 523                 return ret_nor;
 524
 525         if (ret_nand)
 526                 return ret_nand;
 527
 528         return (0);
 529 }
 530
 531 U_BOOT_CMD(
 532         imls,   1,              1,      do_imls,
 533         "list all images found in flash",
 534         "\n"
 535         "    - Prints information about all images found at sector/block\n"
 536         "      boundaries in nor/nand flash."
 537 );
 538 #endif
 539
 540 #ifdef CONFIG_CMD_BOOTZ
 541
 542 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
 543 {
 544         /* Please define bootz_setup() for your platform */
 545
 546         puts("Your platform's zImage format isn't supported yet!\n");
 547         return -1;
 548 }
 549
 550 /*
 551  * zImage booting support
 552  */
 553 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
 554                         char * const argv[], bootm_headers_t *images)
 555 {
 556         int ret;
 557         ulong zi_start, zi_end;
 558
 559         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
 560                               images, 1);
 561
 562         /* Setup Linux kernel zImage entry point */
 563         if (!argc) {
 564                 images->ep = load_addr;
 565                 debug("*  kernel: default image load address = 0x%08lx\n",
 566                                 load_addr);
 567         } else {
 568                 images->ep = simple_strtoul(argv[0], NULL, 16);
 569                 debug("*  kernel: cmdline image address = 0x%08lx\n",
 570                         images->ep);
 571         }
 572
 573         ret = bootz_setup(images->ep, &zi_start, &zi_end);
 574         if (ret != 0)
 575                 return 1;
 576
 577         lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
 578
 579         /*
 580          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
 581          * have a header that provide this informaiton.
 582          */
 583         if (bootm_find_images(flag, argc, argv))
 584                 return 1;
 585
 586         return 0;
 587 }
 588
 589 int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 590 {
 591         int ret;
 592
 593         /* Consume 'bootz' */
 594         argc--; argv++;
 595
 596         if (bootz_start(cmdtp, flag, argc, argv, &images))
 597                 return 1;
 598
 599         /*
 600          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 601          * disable interrupts ourselves
 602          */
 603         bootm_disable_interrupts();
 604
 605         images.os.os = IH_OS_LINUX;
 606         ret = do_bootm_states(cmdtp, flag, argc, argv,
 607                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 608                               BOOTM_STATE_OS_GO,
 609                               &images, 1);
 610
 611         return ret;
 612 }
 613
 614 #ifdef CONFIG_SYS_LONGHELP
 615 static char bootz_help_text[] =
 616         "[addr [initrd[:size]] [fdt]]\n"
 617         "    - boot Linux zImage stored in memory\n"
 618         "\tThe argument 'initrd' is optional and specifies the address\n"
 619         "\tof the initrd in memory. The optional argument ':size' allows\n"
 620         "\tspecifying the size of RAW initrd.\n"
 621 #if defined(CONFIG_OF_LIBFDT)
 622         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
 623         "\ta third argument is required which is the address of the\n"
 624         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
 625         "\tuse a '-' for the second argument. If you do not pass a third\n"
 626         "\ta bd_info struct will be passed instead\n"
 627 #endif
 628         "";
 629 #endif
 630
 631 U_BOOT_CMD(
 632         bootz,  CONFIG_SYS_MAXARGS,     1,      do_bootz,
 633         "boot Linux zImage image from memory", bootz_help_text
 634 );
 635 #endif  /* CONFIG_CMD_BOOTZ */
 636
 637 #ifdef CONFIG_CMD_BOOTI
 638 /* See Documentation/arm64/booting.txt in the Linux kernel */
 639 struct Image_header {
 640         uint32_t        code0;          /* Executable code */
 641         uint32_t        code1;          /* Executable code */
 642         uint64_t        text_offset;    /* Image load offset, LE */
 643         uint64_t        image_size;     /* Effective Image size, LE */
 644         uint64_t        res1;           /* reserved */
 645         uint64_t        res2;           /* reserved */
 646         uint64_t        res3;           /* reserved */
 647         uint64_t        res4;           /* reserved */
 648         uint32_t        magic;          /* Magic number */
 649         uint32_t        res5;
 650 };
 651
 652 #define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
 653
 654 static int booti_setup(bootm_headers_t *images)
 655 {
 656         struct Image_header *ih;
 657         uint64_t dst;
 658
 659         ih = (struct Image_header *)map_sysmem(images->ep, 0);
 660
 661         if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
 662                 puts("Bad Linux ARM64 Image magic!\n");
 663                 return 1;
 664         }
 665
 666         if (ih->image_size == 0) {
 667                 puts("Image lacks image_size field, assuming 16MiB\n");
 668                 ih->image_size = (16 << 20);
 669         }
 670
 671         /*
 672          * If we are not at the correct run-time location, set the new
 673          * correct location and then move the image there.
 674          */
 675         dst = gd->bd->bi_dram[0].start + le32_to_cpu(ih->text_offset);
 676         if (images->ep != dst) {
 677                 void *src;
 678
 679                 debug("Moving Image from 0x%lx to 0x%llx\n", images->ep, dst);
 680
 681                 src = (void *)images->ep;
 682                 images->ep = dst;
 683                 memmove((void *)dst, src, le32_to_cpu(ih->image_size));
 684         }
 685
 686         return 0;
 687 }
 688
 689 /*
 690  * Image booting support
 691  */
 692 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
 693                         char * const argv[], bootm_headers_t *images)
 694 {
 695         int ret;
 696         struct Image_header *ih;
 697
 698         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
 699                               images, 1);
 700
 701         /* Setup Linux kernel Image entry point */
 702         if (!argc) {
 703                 images->ep = load_addr;
 704                 debug("*  kernel: default image load address = 0x%08lx\n",
 705                                 load_addr);
 706         } else {
 707                 images->ep = simple_strtoul(argv[0], NULL, 16);
 708                 debug("*  kernel: cmdline image address = 0x%08lx\n",
 709                         images->ep);
 710         }
 711
 712         ret = booti_setup(images);
 713         if (ret != 0)
 714                 return 1;
 715
 716         ih = (struct Image_header *)map_sysmem(images->ep, 0);
 717
 718         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(ih->image_size));
 719
 720         /*
 721          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
 722          * have a header that provide this informaiton.
 723          */
 724         if (bootm_find_images(flag, argc, argv))
 725                 return 1;
 726
 727         return 0;
 728 }
 729
 730 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 731 {
 732         int ret;
 733
 734         /* Consume 'booti' */
 735         argc--; argv++;
 736
 737         if (booti_start(cmdtp, flag, argc, argv, &images))
 738                 return 1;
 739
 740         /*
 741          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 742          * disable interrupts ourselves
 743          */
 744         bootm_disable_interrupts();
 745
 746         images.os.os = IH_OS_LINUX;
 747         ret = do_bootm_states(cmdtp, flag, argc, argv,
 748                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 749                               BOOTM_STATE_OS_GO,
 750                               &images, 1);
 751
 752         return ret;
 753 }
 754
 755 #ifdef CONFIG_SYS_LONGHELP
 756 static char booti_help_text[] =
 757         "[addr [initrd[:size]] [fdt]]\n"
 758         "    - boot arm64 Linux Image stored in memory\n"
 759         "\tThe argument 'initrd' is optional and specifies the address\n"
 760         "\tof an initrd in memory. The optional parameter ':size' allows\n"
 761         "\tspecifying the size of a RAW initrd.\n"
 762 #if defined(CONFIG_OF_LIBFDT)
 763         "\tSince booting a Linux kernel requires a flat device-tree, a\n"
 764         "\tthird argument providing the address of the device-tree blob\n"
 765         "\tis required. To boot a kernel with a device-tree blob but\n"
 766         "\twithout an initrd image, use a '-' for the initrd argument.\n"
 767 #endif
 768         "";
 769 #endif
 770
 771 U_BOOT_CMD(
 772         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 773         "boot arm64 Linux Image image from memory", booti_help_text
 774 );
 775 #endif  /* CONFIG_CMD_BOOTI */