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         "\tgo      - start OS";
 189 #endif
 190
 191 U_BOOT_CMD(
 192         bootm,  CONFIG_SYS_MAXARGS,     1,      do_bootm,
 193         "boot application image from memory", bootm_help_text
 194 );
 195
 196 /*******************************************************************/
 197 /* bootd - boot default image */
 198 /*******************************************************************/
 199 #if defined(CONFIG_CMD_BOOTD)
 200 int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 201 {
 202         return run_command(getenv("bootcmd"), flag);
 203 }
 204
 205 U_BOOT_CMD(
 206         boot,   1,      1,      do_bootd,
 207         "boot default, i.e., run 'bootcmd'",
 208         ""
 209 );
 210
 211 /* keep old command name "bootd" for backward compatibility */
 212 U_BOOT_CMD(
 213         bootd, 1,       1,      do_bootd,
 214         "boot default, i.e., run 'bootcmd'",
 215         ""
 216 );
 217
 218 #endif
 219
 220
 221 /*******************************************************************/
 222 /* iminfo - print header info for a requested image */
 223 /*******************************************************************/
 224 #if defined(CONFIG_CMD_IMI)
 225 static int do_iminfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 226 {
 227         int     arg;
 228         ulong   addr;
 229         int     rcode = 0;
 230
 231         if (argc < 2) {
 232                 return image_info(load_addr);
 233         }
 234
 235         for (arg = 1; arg < argc; ++arg) {
 236                 addr = simple_strtoul(argv[arg], NULL, 16);
 237                 if (image_info(addr) != 0)
 238                         rcode = 1;
 239         }
 240         return rcode;
 241 }
 242
 243 static int image_info(ulong addr)
 244 {
 245         void *hdr = (void *)addr;
 246
 247         printf("\n## Checking Image at %08lx ...\n", addr);
 248
 249         switch (genimg_get_format(hdr)) {
 250 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 251         case IMAGE_FORMAT_LEGACY:
 252                 puts("   Legacy image found\n");
 253                 if (!image_check_magic(hdr)) {
 254                         puts("   Bad Magic Number\n");
 255                         return 1;
 256                 }
 257
 258                 if (!image_check_hcrc(hdr)) {
 259                         puts("   Bad Header Checksum\n");
 260                         return 1;
 261                 }
 262
 263                 image_print_contents(hdr);
 264
 265                 puts("   Verifying Checksum ... ");
 266                 if (!image_check_dcrc(hdr)) {
 267                         puts("   Bad Data CRC\n");
 268                         return 1;
 269                 }
 270                 puts("OK\n");
 271                 return 0;
 272 #endif
 273 #if defined(CONFIG_FIT)
 274         case IMAGE_FORMAT_FIT:
 275                 puts("   FIT image found\n");
 276
 277                 if (!fit_check_format(hdr)) {
 278                         puts("Bad FIT image format!\n");
 279                         return 1;
 280                 }
 281
 282                 fit_print_contents(hdr);
 283
 284                 if (!fit_all_image_verify(hdr)) {
 285                         puts("Bad hash in FIT image!\n");
 286                         return 1;
 287                 }
 288
 289                 return 0;
 290 #endif
 291         default:
 292                 puts("Unknown image format!\n");
 293                 break;
 294         }
 295
 296         return 1;
 297 }
 298
 299 U_BOOT_CMD(
 300         iminfo, CONFIG_SYS_MAXARGS,     1,      do_iminfo,
 301         "print header information for application image",
 302         "addr [addr ...]\n"
 303         "    - print header information for application image starting at\n"
 304         "      address 'addr' in memory; this includes verification of the\n"
 305         "      image contents (magic number, header and payload checksums)"
 306 );
 307 #endif
 308
 309
 310 /*******************************************************************/
 311 /* imls - list all images found in flash */
 312 /*******************************************************************/
 313 #if defined(CONFIG_CMD_IMLS)
 314 static int do_imls_nor(void)
 315 {
 316         flash_info_t *info;
 317         int i, j;
 318         void *hdr;
 319
 320         for (i = 0, info = &flash_info[0];
 321                 i < CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
 322
 323                 if (info->flash_id == FLASH_UNKNOWN)
 324                         goto next_bank;
 325                 for (j = 0; j < info->sector_count; ++j) {
 326
 327                         hdr = (void *)info->start[j];
 328                         if (!hdr)
 329                                 goto next_sector;
 330
 331                         switch (genimg_get_format(hdr)) {
 332 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 333                         case IMAGE_FORMAT_LEGACY:
 334                                 if (!image_check_hcrc(hdr))
 335                                         goto next_sector;
 336
 337                                 printf("Legacy Image at %08lX:\n", (ulong)hdr);
 338                                 image_print_contents(hdr);
 339
 340                                 puts("   Verifying Checksum ... ");
 341                                 if (!image_check_dcrc(hdr)) {
 342                                         puts("Bad Data CRC\n");
 343                                 } else {
 344                                         puts("OK\n");
 345                                 }
 346                                 break;
 347 #endif
 348 #if defined(CONFIG_FIT)
 349                         case IMAGE_FORMAT_FIT:
 350                                 if (!fit_check_format(hdr))
 351                                         goto next_sector;
 352
 353                                 printf("FIT Image at %08lX:\n", (ulong)hdr);
 354                                 fit_print_contents(hdr);
 355                                 break;
 356 #endif
 357                         default:
 358                                 goto next_sector;
 359                         }
 360
 361 next_sector:            ;
 362                 }
 363 next_bank:      ;
 364         }
 365         return 0;
 366 }
 367 #endif
 368
 369 #if defined(CONFIG_CMD_IMLS_NAND)
 370 static int nand_imls_legacyimage(nand_info_t *nand, int nand_dev, loff_t off,
 371                 size_t len)
 372 {
 373         void *imgdata;
 374         int ret;
 375
 376         imgdata = malloc(len);
 377         if (!imgdata) {
 378                 printf("May be a Legacy Image at NAND device %d offset %08llX:\n",
 379                                 nand_dev, off);
 380                 printf("   Low memory(cannot allocate memory for image)\n");
 381                 return -ENOMEM;
 382         }
 383
 384         ret = nand_read_skip_bad(nand, off, &len,
 385                         imgdata);
 386         if (ret < 0 && ret != -EUCLEAN) {
 387                 free(imgdata);
 388                 return ret;
 389         }
 390
 391         if (!image_check_hcrc(imgdata)) {
 392                 free(imgdata);
 393                 return 0;
 394         }
 395
 396         printf("Legacy Image at NAND device %d offset %08llX:\n",
 397                         nand_dev, off);
 398         image_print_contents(imgdata);
 399
 400         puts("   Verifying Checksum ... ");
 401         if (!image_check_dcrc(imgdata))
 402                 puts("Bad Data CRC\n");
 403         else
 404                 puts("OK\n");
 405
 406         free(imgdata);
 407
 408         return 0;
 409 }
 410
 411 static int nand_imls_fitimage(nand_info_t *nand, int nand_dev, loff_t off,
 412                 size_t len)
 413 {
 414         void *imgdata;
 415         int ret;
 416
 417         imgdata = malloc(len);
 418         if (!imgdata) {
 419                 printf("May be a FIT Image at NAND device %d offset %08llX:\n",
 420                                 nand_dev, off);
 421                 printf("   Low memory(cannot allocate memory for image)\n");
 422                 return -ENOMEM;
 423         }
 424
 425         ret = nand_read_skip_bad(nand, off, &len,
 426                         imgdata);
 427         if (ret < 0 && ret != -EUCLEAN) {
 428                 free(imgdata);
 429                 return ret;
 430         }
 431
 432         if (!fit_check_format(imgdata)) {
 433                 free(imgdata);
 434                 return 0;
 435         }
 436
 437         printf("FIT Image at NAND device %d offset %08llX:\n", nand_dev, off);
 438
 439         fit_print_contents(imgdata);
 440         free(imgdata);
 441
 442         return 0;
 443 }
 444
 445 static int do_imls_nand(void)
 446 {
 447         nand_info_t *nand;
 448         int nand_dev = nand_curr_device;
 449         size_t len;
 450         loff_t off;
 451         u32 buffer[16];
 452
 453         if (nand_dev < 0 || nand_dev >= CONFIG_SYS_MAX_NAND_DEVICE) {
 454                 puts("\nNo NAND devices available\n");
 455                 return -ENODEV;
 456         }
 457
 458         printf("\n");
 459
 460         for (nand_dev = 0; nand_dev < CONFIG_SYS_MAX_NAND_DEVICE; nand_dev++) {
 461                 nand = &nand_info[nand_dev];
 462                 if (!nand->name || !nand->size)
 463                         continue;
 464
 465                 for (off = 0; off < nand->size; off += nand->erasesize) {
 466                         const image_header_t *header;
 467                         int ret;
 468
 469                         if (nand_block_isbad(nand, off))
 470                                 continue;
 471
 472                         len = sizeof(buffer);
 473
 474                         ret = nand_read(nand, off, &len, (u8 *)buffer);
 475                         if (ret < 0 && ret != -EUCLEAN) {
 476                                 printf("NAND read error %d at offset %08llX\n",
 477                                                 ret, off);
 478                                 continue;
 479                         }
 480
 481                         switch (genimg_get_format(buffer)) {
 482 #if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 483                         case IMAGE_FORMAT_LEGACY:
 484                                 header = (const image_header_t *)buffer;
 485
 486                                 len = image_get_image_size(header);
 487                                 nand_imls_legacyimage(nand, nand_dev, off, len);
 488                                 break;
 489 #endif
 490 #if defined(CONFIG_FIT)
 491                         case IMAGE_FORMAT_FIT:
 492                                 len = fit_get_size(buffer);
 493                                 nand_imls_fitimage(nand, nand_dev, off, len);
 494                                 break;
 495 #endif
 496                         }
 497                 }
 498         }
 499
 500         return 0;
 501 }
 502 #endif
 503
 504 #if defined(CONFIG_CMD_IMLS) || defined(CONFIG_CMD_IMLS_NAND)
 505 static int do_imls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 506 {
 507         int ret_nor = 0, ret_nand = 0;
 508
 509 #if defined(CONFIG_CMD_IMLS)
 510         ret_nor = do_imls_nor();
 511 #endif
 512
 513 #if defined(CONFIG_CMD_IMLS_NAND)
 514         ret_nand = do_imls_nand();
 515 #endif
 516
 517         if (ret_nor)
 518                 return ret_nor;
 519
 520         if (ret_nand)
 521                 return ret_nand;
 522
 523         return (0);
 524 }
 525
 526 U_BOOT_CMD(
 527         imls,   1,              1,      do_imls,
 528         "list all images found in flash",
 529         "\n"
 530         "    - Prints information about all images found at sector/block\n"
 531         "      boundaries in nor/nand flash."
 532 );
 533 #endif
 534
 535 #ifdef CONFIG_CMD_BOOTZ
 536
 537 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
 538 {
 539         /* Please define bootz_setup() for your platform */
 540
 541         puts("Your platform's zImage format isn't supported yet!\n");
 542         return -1;
 543 }
 544
 545 /*
 546  * zImage booting support
 547  */
 548 static int bootz_start(cmd_tbl_t *cmdtp, int flag, int argc,
 549                         char * const argv[], bootm_headers_t *images)
 550 {
 551         int ret;
 552         ulong zi_start, zi_end;
 553
 554         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
 555                               images, 1);
 556
 557         /* Setup Linux kernel zImage entry point */
 558         if (!argc) {
 559                 images->ep = load_addr;
 560                 debug("*  kernel: default image load address = 0x%08lx\n",
 561                                 load_addr);
 562         } else {
 563                 images->ep = simple_strtoul(argv[0], NULL, 16);
 564                 debug("*  kernel: cmdline image address = 0x%08lx\n",
 565                         images->ep);
 566         }
 567
 568         ret = bootz_setup(images->ep, &zi_start, &zi_end);
 569         if (ret != 0)
 570                 return 1;
 571
 572         lmb_reserve(&images->lmb, images->ep, zi_end - zi_start);
 573
 574         /*
 575          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
 576          * have a header that provide this informaiton.
 577          */
 578         if (bootm_find_ramdisk_fdt(flag, argc, argv))
 579                 return 1;
 580
 581         return 0;
 582 }
 583
 584 int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 585 {
 586         int ret;
 587
 588         /* Consume 'bootz' */
 589         argc--; argv++;
 590
 591         if (bootz_start(cmdtp, flag, argc, argv, &images))
 592                 return 1;
 593
 594         /*
 595          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 596          * disable interrupts ourselves
 597          */
 598         bootm_disable_interrupts();
 599
 600         images.os.os = IH_OS_LINUX;
 601         ret = do_bootm_states(cmdtp, flag, argc, argv,
 602                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 603                               BOOTM_STATE_OS_GO,
 604                               &images, 1);
 605
 606         return ret;
 607 }
 608
 609 #ifdef CONFIG_SYS_LONGHELP
 610 static char bootz_help_text[] =
 611         "[addr [initrd[:size]] [fdt]]\n"
 612         "    - boot Linux zImage stored in memory\n"
 613         "\tThe argument 'initrd' is optional and specifies the address\n"
 614         "\tof the initrd in memory. The optional argument ':size' allows\n"
 615         "\tspecifying the size of RAW initrd.\n"
 616 #if defined(CONFIG_OF_LIBFDT)
 617         "\tWhen booting a Linux kernel which requires a flat device-tree\n"
 618         "\ta third argument is required which is the address of the\n"
 619         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
 620         "\tuse a '-' for the second argument. If you do not pass a third\n"
 621         "\ta bd_info struct will be passed instead\n"
 622 #endif
 623         "";
 624 #endif
 625
 626 U_BOOT_CMD(
 627         bootz,  CONFIG_SYS_MAXARGS,     1,      do_bootz,
 628         "boot Linux zImage image from memory", bootz_help_text
 629 );
 630 #endif  /* CONFIG_CMD_BOOTZ */
 631
 632 #ifdef CONFIG_CMD_BOOTI
 633 /* See Documentation/arm64/booting.txt in the Linux kernel */
 634 struct Image_header {
 635         uint32_t        code0;          /* Executable code */
 636         uint32_t        code1;          /* Executable code */
 637         uint64_t        text_offset;    /* Image load offset, LE */
 638         uint64_t        image_size;     /* Effective Image size, LE */
 639         uint64_t        res1;           /* reserved */
 640         uint64_t        res2;           /* reserved */
 641         uint64_t        res3;           /* reserved */
 642         uint64_t        res4;           /* reserved */
 643         uint32_t        magic;          /* Magic number */
 644         uint32_t        res5;
 645 };
 646
 647 #define LINUX_ARM64_IMAGE_MAGIC 0x644d5241
 648
 649 static int booti_setup(bootm_headers_t *images)
 650 {
 651         struct Image_header *ih;
 652         uint64_t dst;
 653
 654         ih = (struct Image_header *)map_sysmem(images->ep, 0);
 655
 656         if (ih->magic != le32_to_cpu(LINUX_ARM64_IMAGE_MAGIC)) {
 657                 puts("Bad Linux ARM64 Image magic!\n");
 658                 return 1;
 659         }
 660
 661         if (ih->image_size == 0) {
 662                 puts("Image lacks image_size field, assuming 16MiB\n");
 663                 ih->image_size = (16 << 20);
 664         }
 665
 666         /*
 667          * If we are not at the correct run-time location, set the new
 668          * correct location and then move the image there.
 669          */
 670         dst = gd->bd->bi_dram[0].start + le32_to_cpu(ih->text_offset);
 671         if (images->ep != dst) {
 672                 void *src;
 673
 674                 debug("Moving Image from 0x%lx to 0x%llx\n", images->ep, dst);
 675
 676                 src = (void *)images->ep;
 677                 images->ep = dst;
 678                 memmove((void *)dst, src, le32_to_cpu(ih->image_size));
 679         }
 680
 681         return 0;
 682 }
 683
 684 /*
 685  * Image booting support
 686  */
 687 static int booti_start(cmd_tbl_t *cmdtp, int flag, int argc,
 688                         char * const argv[], bootm_headers_t *images)
 689 {
 690         int ret;
 691         struct Image_header *ih;
 692
 693         ret = do_bootm_states(cmdtp, flag, argc, argv, BOOTM_STATE_START,
 694                               images, 1);
 695
 696         /* Setup Linux kernel Image entry point */
 697         if (!argc) {
 698                 images->ep = load_addr;
 699                 debug("*  kernel: default image load address = 0x%08lx\n",
 700                                 load_addr);
 701         } else {
 702                 images->ep = simple_strtoul(argv[0], NULL, 16);
 703                 debug("*  kernel: cmdline image address = 0x%08lx\n",
 704                         images->ep);
 705         }
 706
 707         ret = booti_setup(images);
 708         if (ret != 0)
 709                 return 1;
 710
 711         ih = (struct Image_header *)map_sysmem(images->ep, 0);
 712
 713         lmb_reserve(&images->lmb, images->ep, le32_to_cpu(ih->image_size));
 714
 715         /*
 716          * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
 717          * have a header that provide this informaiton.
 718          */
 719         if (bootm_find_ramdisk_fdt(flag, argc, argv))
 720                 return 1;
 721
 722         return 0;
 723 }
 724
 725 int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 726 {
 727         int ret;
 728
 729         /* Consume 'booti' */
 730         argc--; argv++;
 731
 732         if (booti_start(cmdtp, flag, argc, argv, &images))
 733                 return 1;
 734
 735         /*
 736          * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
 737          * disable interrupts ourselves
 738          */
 739         bootm_disable_interrupts();
 740
 741         images.os.os = IH_OS_LINUX;
 742         ret = do_bootm_states(cmdtp, flag, argc, argv,
 743                               BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
 744                               BOOTM_STATE_OS_GO,
 745                               &images, 1);
 746
 747         return ret;
 748 }
 749
 750 #ifdef CONFIG_SYS_LONGHELP
 751 static char booti_help_text[] =
 752         "[addr [initrd[:size]] [fdt]]\n"
 753         "    - boot Linux Image stored in memory\n"
 754         "\tThe argument 'initrd' is optional and specifies the address\n"
 755         "\tof the initrd in memory. The optional argument ':size' allows\n"
 756         "\tspecifying the size of RAW initrd.\n"
 757 #if defined(CONFIG_OF_LIBFDT)
 758         "\tSince booting a Linux kernelrequires a flat device-tree\n"
 759         "\ta third argument is required which is the address of the\n"
 760         "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
 761         "\tuse a '-' for the second argument.\n"
 762 #endif
 763         "";
 764 #endif
 765
 766 U_BOOT_CMD(
 767         booti,  CONFIG_SYS_MAXARGS,     1,      do_booti,
 768         "boot arm64 Linux Image image from memory", booti_help_text
 769 );
 770 #endif  /* CONFIG_CMD_BOOTI */