tools/fit_image.c

   1 /*
   2  * (C) Copyright 2008 Semihalf
   3  *
   4  * (C) Copyright 2000-2004
   5  * DENX Software Engineering
   6  * Wolfgang Denk, wd@denx.de
   7  *
   8  * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
   9  *              FIT image specific code abstracted from mkimage.c
  10  *              some functions added to address abstraction
  11  *
  12  * All rights reserved.
  13  *
  14  * SPDX-License-Identifier:     GPL-2.0+
  15  */
  16
  17 #include "imagetool.h"
  18 #include "fit_common.h"
  19 #include "mkimage.h"
  20 #include <image.h>
  21 #include <stdarg.h>
  22 #include <version.h>
  23 #include <u-boot/crc.h>
  24
  25 static image_header_t header;
  26
  27 static int fit_add_file_data(struct image_tool_params *params, size_t size_inc,
  28                              const char *tmpfile)
  29 {
  30         int tfd, destfd = 0;
  31         void *dest_blob = NULL;
  32         off_t destfd_size = 0;
  33         struct stat sbuf;
  34         void *ptr;
  35         int ret = 0;
  36
  37         tfd = mmap_fdt(params->cmdname, tmpfile, size_inc, &ptr, &sbuf, true);
  38         if (tfd < 0)
  39                 return -EIO;
  40
  41         if (params->keydest) {
  42                 struct stat dest_sbuf;
  43
  44                 destfd = mmap_fdt(params->cmdname, params->keydest, size_inc,
  45                                   &dest_blob, &dest_sbuf, false);
  46                 if (destfd < 0) {
  47                         ret = -EIO;
  48                         goto err_keydest;
  49                 }
  50                 destfd_size = dest_sbuf.st_size;
  51         }
  52
  53         /* for first image creation, add a timestamp at offset 0 i.e., root  */
  54         if (params->datafile) {
  55                 time_t time = imagetool_get_source_date(params, sbuf.st_mtime);
  56                 ret = fit_set_timestamp(ptr, 0, time);
  57         }
  58
  59         if (!ret) {
  60                 ret = fit_add_verification_data(params->keydir, dest_blob, ptr,
  61                                                 params->comment,
  62                                                 params->require_keys,
  63                                                 params->engine_id);
  64         }
  65
  66         if (dest_blob) {
  67                 munmap(dest_blob, destfd_size);
  68                 close(destfd);
  69         }
  70
  71 err_keydest:
  72         munmap(ptr, sbuf.st_size);
  73         close(tfd);
  74
  75         return ret;
  76 }
  77
  78 /**
  79  * fit_calc_size() - Calculate the approximate size of the FIT we will generate
  80  */
  81 static int fit_calc_size(struct image_tool_params *params)
  82 {
  83         struct content_info *cont;
  84         int size, total_size;
  85
  86         size = imagetool_get_filesize(params, params->datafile);
  87         if (size < 0)
  88                 return -1;
  89         total_size = size;
  90
  91         if (params->fit_ramdisk) {
  92                 size = imagetool_get_filesize(params, params->fit_ramdisk);
  93                 if (size < 0)
  94                         return -1;
  95                 total_size += size;
  96         }
  97
  98         for (cont = params->content_head; cont; cont = cont->next) {
  99                 size = imagetool_get_filesize(params, cont->fname);
 100                 if (size < 0)
 101                         return -1;
 102
 103                 /* Add space for properties */
 104                 total_size += size + 300;
 105         }
 106
 107         /* Add plenty of space for headers, properties, nodes, etc. */
 108         total_size += 4096;
 109
 110         return total_size;
 111 }
 112
 113 static int fdt_property_file(struct image_tool_params *params,
 114                              void *fdt, const char *name, const char *fname)
 115 {
 116         struct stat sbuf;
 117         void *ptr;
 118         int ret;
 119         int fd;
 120
 121         fd = open(fname, O_RDWR | O_BINARY);
 122         if (fd < 0) {
 123                 fprintf(stderr, "%s: Can't open %s: %s\n",
 124                         params->cmdname, fname, strerror(errno));
 125                 return -1;
 126         }
 127
 128         if (fstat(fd, &sbuf) < 0) {
 129                 fprintf(stderr, "%s: Can't stat %s: %s\n",
 130                         params->cmdname, fname, strerror(errno));
 131                 goto err;
 132         }
 133
 134         ret = fdt_property_placeholder(fdt, "data", sbuf.st_size, &ptr);
 135         if (ret)
 136                 goto err;
 137         ret = read(fd, ptr, sbuf.st_size);
 138         if (ret != sbuf.st_size) {
 139                 fprintf(stderr, "%s: Can't read %s: %s\n",
 140                         params->cmdname, fname, strerror(errno));
 141                 goto err;
 142         }
 143         close(fd);
 144
 145         return 0;
 146 err:
 147         close(fd);
 148         return -1;
 149 }
 150
 151 static int fdt_property_strf(void *fdt, const char *name, const char *fmt, ...)
 152 {
 153         char str[100];
 154         va_list ptr;
 155
 156         va_start(ptr, fmt);
 157         vsnprintf(str, sizeof(str), fmt, ptr);
 158         va_end(ptr);
 159         return fdt_property_string(fdt, name, str);
 160 }
 161
 162 static void get_basename(char *str, int size, const char *fname)
 163 {
 164         const char *p, *start, *end;
 165         int len;
 166
 167         /*
 168          * Use the base name as the 'name' field. So for example:
 169          *
 170          * "arch/arm/dts/sun7i-a20-bananapro.dtb"
 171          * becomes "sun7i-a20-bananapro"
 172          */
 173         p = strrchr(fname, '/');
 174         start = p ? p + 1 : fname;
 175         p = strrchr(fname, '.');
 176         end = p ? p : fname + strlen(fname);
 177         len = end - start;
 178         if (len >= size)
 179                 len = size - 1;
 180         memcpy(str, start, len);
 181         str[len] = '\0';
 182 }
 183
 184 /**
 185  * fit_write_images() - Write out a list of images to the FIT
 186  *
 187  * We always include the main image (params->datafile). If there are device
 188  * tree files, we include an fdt- node for each of those too.
 189  */
 190 static int fit_write_images(struct image_tool_params *params, char *fdt)
 191 {
 192         struct content_info *cont;
 193         const char *typename;
 194         char str[100];
 195         int upto;
 196         int ret;
 197
 198         fdt_begin_node(fdt, "images");
 199
 200         /* First the main image */
 201         typename = genimg_get_type_short_name(params->fit_image_type);
 202         snprintf(str, sizeof(str), "%s-1", typename);
 203         fdt_begin_node(fdt, str);
 204         fdt_property_string(fdt, "description", params->imagename);
 205         fdt_property_string(fdt, "type", typename);
 206         fdt_property_string(fdt, "arch",
 207                             genimg_get_arch_short_name(params->arch));
 208         fdt_property_string(fdt, "os", genimg_get_os_short_name(params->os));
 209         fdt_property_string(fdt, "compression",
 210                             genimg_get_comp_short_name(params->comp));
 211         fdt_property_u32(fdt, "load", params->addr);
 212         fdt_property_u32(fdt, "entry", params->ep);
 213
 214         /*
 215          * Put data last since it is large. SPL may only load the first part
 216          * of the DT, so this way it can access all the above fields.
 217          */
 218         ret = fdt_property_file(params, fdt, "data", params->datafile);
 219         if (ret)
 220                 return ret;
 221         fdt_end_node(fdt);
 222
 223         /* Now the device tree files if available */
 224         upto = 0;
 225         for (cont = params->content_head; cont; cont = cont->next) {
 226                 if (cont->type != IH_TYPE_FLATDT)
 227                         continue;
 228                 snprintf(str, sizeof(str), "%s-%d", FIT_FDT_PROP, ++upto);
 229                 fdt_begin_node(fdt, str);
 230
 231                 get_basename(str, sizeof(str), cont->fname);
 232                 fdt_property_string(fdt, "description", str);
 233                 ret = fdt_property_file(params, fdt, "data", cont->fname);
 234                 if (ret)
 235                         return ret;
 236                 fdt_property_string(fdt, "type", typename);
 237                 fdt_property_string(fdt, "arch",
 238                                     genimg_get_arch_short_name(params->arch));
 239                 fdt_property_string(fdt, "compression",
 240                                     genimg_get_comp_short_name(IH_COMP_NONE));
 241                 fdt_end_node(fdt);
 242         }
 243
 244         /* And a ramdisk file if available */
 245         if (params->fit_ramdisk) {
 246                 fdt_begin_node(fdt, FIT_RAMDISK_PROP "-1");
 247
 248                 fdt_property_string(fdt, "type", FIT_RAMDISK_PROP);
 249                 fdt_property_string(fdt, "os", genimg_get_os_short_name(params->os));
 250
 251                 ret = fdt_property_file(params, fdt, "data", params->fit_ramdisk);
 252                 if (ret)
 253                         return ret;
 254
 255                 fdt_end_node(fdt);
 256         }
 257
 258         fdt_end_node(fdt);
 259
 260         return 0;
 261 }
 262
 263 /**
 264  * fit_write_configs() - Write out a list of configurations to the FIT
 265  *
 266  * If there are device tree files, we include a configuration for each, which
 267  * selects the main image (params->datafile) and its corresponding device
 268  * tree file.
 269  *
 270  * Otherwise we just create a configuration with the main image in it.
 271  */
 272 static void fit_write_configs(struct image_tool_params *params, char *fdt)
 273 {
 274         struct content_info *cont;
 275         const char *typename;
 276         char str[100];
 277         int upto;
 278
 279         fdt_begin_node(fdt, "configurations");
 280         fdt_property_string(fdt, "default", "conf-1");
 281
 282         upto = 0;
 283         for (cont = params->content_head; cont; cont = cont->next) {
 284                 if (cont->type != IH_TYPE_FLATDT)
 285                         continue;
 286                 typename = genimg_get_type_short_name(cont->type);
 287                 snprintf(str, sizeof(str), "conf-%d", ++upto);
 288                 fdt_begin_node(fdt, str);
 289
 290                 get_basename(str, sizeof(str), cont->fname);
 291                 fdt_property_string(fdt, "description", str);
 292
 293                 typename = genimg_get_type_short_name(params->fit_image_type);
 294                 snprintf(str, sizeof(str), "%s-1", typename);
 295                 fdt_property_string(fdt, typename, str);
 296
 297                 if (params->fit_ramdisk)
 298                         fdt_property_string(fdt, FIT_RAMDISK_PROP,
 299                                             FIT_RAMDISK_PROP "-1");
 300
 301                 snprintf(str, sizeof(str), FIT_FDT_PROP "-%d", upto);
 302                 fdt_property_string(fdt, FIT_FDT_PROP, str);
 303                 fdt_end_node(fdt);
 304         }
 305
 306         if (!upto) {
 307                 fdt_begin_node(fdt, "conf-1");
 308                 typename = genimg_get_type_short_name(params->fit_image_type);
 309                 snprintf(str, sizeof(str), "%s-1", typename);
 310                 fdt_property_string(fdt, typename, str);
 311
 312                 if (params->fit_ramdisk)
 313                         fdt_property_string(fdt, FIT_RAMDISK_PROP,
 314                                             FIT_RAMDISK_PROP "-1");
 315
 316                 fdt_end_node(fdt);
 317         }
 318
 319         fdt_end_node(fdt);
 320 }
 321
 322 static int fit_build_fdt(struct image_tool_params *params, char *fdt, int size)
 323 {
 324         int ret;
 325
 326         ret = fdt_create(fdt, size);
 327         if (ret)
 328                 return ret;
 329         fdt_finish_reservemap(fdt);
 330         fdt_begin_node(fdt, "");
 331         fdt_property_strf(fdt, "description",
 332                           "%s image with one or more FDT blobs",
 333                           genimg_get_type_name(params->fit_image_type));
 334         fdt_property_strf(fdt, "creator", "U-Boot mkimage %s", PLAIN_VERSION);
 335         fdt_property_u32(fdt, "#address-cells", 1);
 336         ret = fit_write_images(params, fdt);
 337         if (ret)
 338                 return ret;
 339         fit_write_configs(params, fdt);
 340         fdt_end_node(fdt);
 341         ret = fdt_finish(fdt);
 342         if (ret)
 343                 return ret;
 344
 345         return fdt_totalsize(fdt);
 346 }
 347
 348 static int fit_build(struct image_tool_params *params, const char *fname)
 349 {
 350         char *buf;
 351         int size;
 352         int ret;
 353         int fd;
 354
 355         size = fit_calc_size(params);
 356         if (size < 0)
 357                 return -1;
 358         buf = malloc(size);
 359         if (!buf) {
 360                 fprintf(stderr, "%s: Out of memory (%d bytes)\n",
 361                         params->cmdname, size);
 362                 return -1;
 363         }
 364         ret = fit_build_fdt(params, buf, size);
 365         if (ret < 0) {
 366                 fprintf(stderr, "%s: Failed to build FIT image\n",
 367                         params->cmdname);
 368                 goto err_buf;
 369         }
 370         size = ret;
 371         fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
 372         if (fd < 0) {
 373                 fprintf(stderr, "%s: Can't open %s: %s\n",
 374                         params->cmdname, fname, strerror(errno));
 375                 goto err_buf;
 376         }
 377         ret = write(fd, buf, size);
 378         if (ret != size) {
 379                 fprintf(stderr, "%s: Can't write %s: %s\n",
 380                         params->cmdname, fname, strerror(errno));
 381                 goto err;
 382         }
 383         close(fd);
 384         free(buf);
 385
 386         return 0;
 387 err:
 388         close(fd);
 389 err_buf:
 390         free(buf);
 391         return -1;
 392 }
 393
 394 /**
 395  * fit_extract_data() - Move all data outside the FIT
 396  *
 397  * This takes a normal FIT file and removes all the 'data' properties from it.
 398  * The data is placed in an area after the FIT so that it can be accessed
 399  * using an offset into that area. The 'data' properties turn into
 400  * 'data-offset' properties.
 401  *
 402  * This function cannot cope with FITs with 'data-offset' properties. All
 403  * data must be in 'data' properties on entry.
 404  */
 405 static int fit_extract_data(struct image_tool_params *params, const char *fname)
 406 {
 407         void *buf;
 408         int buf_ptr;
 409         int fit_size, new_size;
 410         int fd;
 411         struct stat sbuf;
 412         void *fdt;
 413         int ret;
 414         int images;
 415         int node;
 416
 417         fd = mmap_fdt(params->cmdname, fname, 0, &fdt, &sbuf, false);
 418         if (fd < 0)
 419                 return -EIO;
 420         fit_size = fdt_totalsize(fdt);
 421
 422         /* Allocate space to hold the image data we will extract */
 423         buf = malloc(fit_size);
 424         if (!buf) {
 425                 ret = -ENOMEM;
 426                 goto err_munmap;
 427         }
 428         buf_ptr = 0;
 429
 430         images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
 431         if (images < 0) {
 432                 debug("%s: Cannot find /images node: %d\n", __func__, images);
 433                 ret = -EINVAL;
 434                 goto err_munmap;
 435         }
 436
 437         for (node = fdt_first_subnode(fdt, images);
 438              node >= 0;
 439              node = fdt_next_subnode(fdt, node)) {
 440                 const char *data;
 441                 int len;
 442
 443                 data = fdt_getprop(fdt, node, "data", &len);
 444                 if (!data)
 445                         continue;
 446                 memcpy(buf + buf_ptr, data, len);
 447                 debug("Extracting data size %x\n", len);
 448
 449                 ret = fdt_delprop(fdt, node, "data");
 450                 if (ret) {
 451                         ret = -EPERM;
 452                         goto err_munmap;
 453                 }
 454                 if (params->external_offset > 0) {
 455                         /* An external offset positions the data absolutely. */
 456                         fdt_setprop_u32(fdt, node, "data-position",
 457                                         params->external_offset + buf_ptr);
 458                 } else {
 459                         fdt_setprop_u32(fdt, node, "data-offset", buf_ptr);
 460                 }
 461                 fdt_setprop_u32(fdt, node, "data-size", len);
 462
 463                 buf_ptr += (len + 3) & ~3;
 464         }
 465
 466         /* Pack the FDT and place the data after it */
 467         fdt_pack(fdt);
 468
 469         debug("Size reduced from %x to %x\n", fit_size, fdt_totalsize(fdt));
 470         debug("External data size %x\n", buf_ptr);
 471         new_size = fdt_totalsize(fdt);
 472         new_size = (new_size + 3) & ~3;
 473         munmap(fdt, sbuf.st_size);
 474
 475         if (ftruncate(fd, new_size)) {
 476                 debug("%s: Failed to truncate file: %s\n", __func__,
 477                       strerror(errno));
 478                 ret = -EIO;
 479                 goto err;
 480         }
 481
 482         /* Check if an offset for the external data was set. */
 483         if (params->external_offset > 0) {
 484                 if (params->external_offset < new_size) {
 485                         debug("External offset %x overlaps FIT length %x",
 486                               params->external_offset, new_size);
 487                         ret = -EINVAL;
 488                         goto err;
 489                 }
 490                 new_size = params->external_offset;
 491         }
 492         if (lseek(fd, new_size, SEEK_SET) < 0) {
 493                 debug("%s: Failed to seek to end of file: %s\n", __func__,
 494                       strerror(errno));
 495                 ret = -EIO;
 496                 goto err;
 497         }
 498         if (write(fd, buf, buf_ptr) != buf_ptr) {
 499                 debug("%s: Failed to write external data to file %s\n",
 500                       __func__, strerror(errno));
 501                 ret = -EIO;
 502                 goto err;
 503         }
 504         free(buf);
 505         close(fd);
 506         return 0;
 507
 508 err_munmap:
 509         munmap(fdt, sbuf.st_size);
 510 err:
 511         if (buf)
 512                 free(buf);
 513         close(fd);
 514         return ret;
 515 }
 516
 517 static int fit_import_data(struct image_tool_params *params, const char *fname)
 518 {
 519         void *fdt, *old_fdt;
 520         int fit_size, new_size, size, data_base;
 521         int fd;
 522         struct stat sbuf;
 523         int ret;
 524         int images;
 525         int node;
 526
 527         fd = mmap_fdt(params->cmdname, fname, 0, &old_fdt, &sbuf, false);
 528         if (fd < 0)
 529                 return -EIO;
 530         fit_size = fdt_totalsize(old_fdt);
 531         data_base = (fit_size + 3) & ~3;
 532
 533         /* Allocate space to hold the new FIT */
 534         size = sbuf.st_size + 16384;
 535         fdt = malloc(size);
 536         if (!fdt) {
 537                 fprintf(stderr, "%s: Failed to allocate memory (%d bytes)\n",
 538                         __func__, size);
 539                 ret = -ENOMEM;
 540                 goto err_has_fd;
 541         }
 542         ret = fdt_open_into(old_fdt, fdt, size);
 543         if (ret) {
 544                 debug("%s: Failed to expand FIT: %s\n", __func__,
 545                       fdt_strerror(errno));
 546                 ret = -EINVAL;
 547                 goto err_has_fd;
 548         }
 549
 550         images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
 551         if (images < 0) {
 552                 debug("%s: Cannot find /images node: %d\n", __func__, images);
 553                 ret = -EINVAL;
 554                 goto err_has_fd;
 555         }
 556
 557         for (node = fdt_first_subnode(fdt, images);
 558              node >= 0;
 559              node = fdt_next_subnode(fdt, node)) {
 560                 int buf_ptr;
 561                 int len;
 562
 563                 buf_ptr = fdtdec_get_int(fdt, node, "data-offset", -1);
 564                 len = fdtdec_get_int(fdt, node, "data-size", -1);
 565                 if (buf_ptr == -1 || len == -1)
 566                         continue;
 567                 debug("Importing data size %x\n", len);
 568
 569                 ret = fdt_setprop(fdt, node, "data", fdt + data_base + buf_ptr,
 570                                   len);
 571                 if (ret) {
 572                         debug("%s: Failed to write property: %s\n", __func__,
 573                               fdt_strerror(ret));
 574                         ret = -EINVAL;
 575                         goto err_has_fd;
 576                 }
 577         }
 578
 579         /* Close the old fd so we can re-use it. */
 580         close(fd);
 581
 582         /* Pack the FDT and place the data after it */
 583         fdt_pack(fdt);
 584
 585         new_size = fdt_totalsize(fdt);
 586         debug("Size expanded from %x to %x\n", fit_size, new_size);
 587
 588         fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
 589         if (fd < 0) {
 590                 fprintf(stderr, "%s: Can't open %s: %s\n",
 591                         params->cmdname, fname, strerror(errno));
 592                 ret = -EIO;
 593                 goto err_no_fd;
 594         }
 595         if (write(fd, fdt, new_size) != new_size) {
 596                 debug("%s: Failed to write external data to file %s\n",
 597                       __func__, strerror(errno));
 598                 ret = -EIO;
 599                 goto err_has_fd;
 600         }
 601
 602         ret = 0;
 603
 604 err_has_fd:
 605         close(fd);
 606 err_no_fd:
 607         munmap(old_fdt, sbuf.st_size);
 608         free(fdt);
 609         return ret;
 610 }
 611
 612 /**
 613  * fit_handle_file - main FIT file processing function
 614  *
 615  * fit_handle_file() runs dtc to convert .its to .itb, includes
 616  * binary data, updates timestamp property and calculates hashes.
 617  *
 618  * datafile  - .its file
 619  * imagefile - .itb file
 620  *
 621  * returns:
 622  *     only on success, otherwise calls exit (EXIT_FAILURE);
 623  */
 624 static int fit_handle_file(struct image_tool_params *params)
 625 {
 626         char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
 627         char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
 628         size_t size_inc;
 629         int ret;
 630
 631         /* Flattened Image Tree (FIT) format  handling */
 632         debug ("FIT format handling\n");
 633
 634         /* call dtc to include binary properties into the tmp file */
 635         if (strlen (params->imagefile) +
 636                 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
 637                 fprintf (stderr, "%s: Image file name (%s) too long, "
 638                                 "can't create tmpfile",
 639                                 params->imagefile, params->cmdname);
 640                 return (EXIT_FAILURE);
 641         }
 642         sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
 643
 644         /* We either compile the source file, or use the existing FIT image */
 645         if (params->auto_its) {
 646                 if (fit_build(params, tmpfile)) {
 647                         fprintf(stderr, "%s: failed to build FIT\n",
 648                                 params->cmdname);
 649                         return EXIT_FAILURE;
 650                 }
 651                 *cmd = '\0';
 652         } else if (params->datafile) {
 653                 /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
 654                 snprintf(cmd, sizeof(cmd), "%s %s \"%s\" > \"%s\"",
 655                          MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
 656                 debug("Trying to execute \"%s\"\n", cmd);
 657         } else {
 658                 snprintf(cmd, sizeof(cmd), "cp \"%s\" \"%s\"",
 659                          params->imagefile, tmpfile);
 660         }
 661         if (*cmd && system(cmd) == -1) {
 662                 fprintf (stderr, "%s: system(%s) failed: %s\n",
 663                                 params->cmdname, cmd, strerror(errno));
 664                 goto err_system;
 665         }
 666
 667         /* Move the data so it is internal to the FIT, if needed */
 668         ret = fit_import_data(params, tmpfile);
 669         if (ret)
 670                 goto err_system;
 671
 672         /*
 673          * Set hashes for images in the blob. Unfortunately we may need more
 674          * space in either FDT, so keep trying until we succeed.
 675          *
 676          * Note: this is pretty inefficient for signing, since we must
 677          * calculate the signature every time. It would be better to calculate
 678          * all the data and then store it in a separate step. However, this
 679          * would be considerably more complex to implement. Generally a few
 680          * steps of this loop is enough to sign with several keys.
 681          */
 682         for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) {
 683                 ret = fit_add_file_data(params, size_inc, tmpfile);
 684                 if (!ret || ret != -ENOSPC)
 685                         break;
 686         }
 687
 688         if (ret) {
 689                 fprintf(stderr, "%s Can't add hashes to FIT blob: %d\n",
 690                         params->cmdname, ret);
 691                 goto err_system;
 692         }
 693
 694         /* Move the data so it is external to the FIT, if requested */
 695         if (params->external_data) {
 696                 ret = fit_extract_data(params, tmpfile);
 697                 if (ret)
 698                         goto err_system;
 699         }
 700
 701         if (rename (tmpfile, params->imagefile) == -1) {
 702                 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
 703                                 params->cmdname, tmpfile, params->imagefile,
 704                                 strerror (errno));
 705                 unlink (tmpfile);
 706                 unlink (params->imagefile);
 707                 return EXIT_FAILURE;
 708         }
 709         return EXIT_SUCCESS;
 710
 711 err_system:
 712         unlink(tmpfile);
 713         return -1;
 714 }
 715
 716 /**
 717  * fit_image_extract - extract a FIT component image
 718  * @fit: pointer to the FIT format image header
 719  * @image_noffset: offset of the component image node
 720  * @file_name: name of the file to store the FIT sub-image
 721  *
 722  * returns:
 723  *     zero in case of success or a negative value if fail.
 724  */
 725 static int fit_image_extract(
 726         const void *fit,
 727         int image_noffset,
 728         const char *file_name)
 729 {
 730         const void *file_data;
 731         size_t file_size = 0;
 732
 733         /* get the "data" property of component at offset "image_noffset" */
 734         fit_image_get_data(fit, image_noffset, &file_data, &file_size);
 735
 736         /* save the "file_data" into the file specified by "file_name" */
 737         return imagetool_save_subimage(file_name, (ulong) file_data, file_size);
 738 }
 739
 740 /**
 741  * fit_extract_contents - retrieve a sub-image component from the FIT image
 742  * @ptr: pointer to the FIT format image header
 743  * @params: command line parameters
 744  *
 745  * returns:
 746  *     zero in case of success or a negative value if fail.
 747  */
 748 static int fit_extract_contents(void *ptr, struct image_tool_params *params)
 749 {
 750         int images_noffset;
 751         int noffset;
 752         int ndepth;
 753         const void *fit = ptr;
 754         int count = 0;
 755         const char *p;
 756
 757         /* Indent string is defined in header image.h */
 758         p = IMAGE_INDENT_STRING;
 759
 760         if (!fit_check_format(fit)) {
 761                 printf("Bad FIT image format\n");
 762                 return -1;
 763         }
 764
 765         /* Find images parent node offset */
 766         images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
 767         if (images_noffset < 0) {
 768                 printf("Can't find images parent node '%s' (%s)\n",
 769                        FIT_IMAGES_PATH, fdt_strerror(images_noffset));
 770                 return -1;
 771         }
 772
 773         /* Avoid any overrun */
 774         count = fit_get_subimage_count(fit, images_noffset);
 775         if ((params->pflag < 0) || (count <= params->pflag)) {
 776                 printf("No such component at '%d'\n", params->pflag);
 777                 return -1;
 778         }
 779
 780         /* Process its subnodes, extract the desired component from image */
 781         for (ndepth = 0, count = 0,
 782                 noffset = fdt_next_node(fit, images_noffset, &ndepth);
 783                 (noffset >= 0) && (ndepth > 0);
 784                 noffset = fdt_next_node(fit, noffset, &ndepth)) {
 785                 if (ndepth == 1) {
 786                         /*
 787                          * Direct child node of the images parent node,
 788                          * i.e. component image node.
 789                          */
 790                         if (params->pflag == count) {
 791                                 printf("Extracted:\n%s Image %u (%s)\n", p,
 792                                        count, fit_get_name(fit, noffset, NULL));
 793
 794                                 fit_image_print(fit, noffset, p);
 795
 796                                 return fit_image_extract(fit, noffset,
 797                                                 params->outfile);
 798                         }
 799
 800                         count++;
 801                 }
 802         }
 803
 804         return 0;
 805 }
 806
 807 static int fit_check_params(struct image_tool_params *params)
 808 {
 809         if (params->auto_its)
 810                 return 0;
 811         return  ((params->dflag && (params->fflag || params->lflag)) ||
 812                 (params->fflag && (params->dflag || params->lflag)) ||
 813                 (params->lflag && (params->dflag || params->fflag)));
 814 }
 815
 816 U_BOOT_IMAGE_TYPE(
 817         fitimage,
 818         "FIT Image support",
 819         sizeof(image_header_t),
 820         (void *)&header,
 821         fit_check_params,
 822         fit_verify_header,
 823         fit_print_contents,
 824         NULL,
 825         fit_extract_contents,
 826         fit_check_image_types,
 827         fit_handle_file,
 828         NULL /* FIT images use DTB header */
 829 );