tools/image-host.c

   1 /*
   2  * Copyright (c) 2013, Google Inc.
   3  *
   4  * (C) Copyright 2008 Semihalf
   5  *
   6  * (C) Copyright 2000-2006
   7  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include "mkimage.h"
  13 #include <bootm.h>
  14 #include <image.h>
  15 #include <version.h>
  16
  17 /**
  18  * fit_set_hash_value - set hash value in requested has node
  19  * @fit: pointer to the FIT format image header
  20  * @noffset: hash node offset
  21  * @value: hash value to be set
  22  * @value_len: hash value length
  23  *
  24  * fit_set_hash_value() attempts to set hash value in a node at offset
  25  * given and returns operation status to the caller.
  26  *
  27  * returns
  28  *     0, on success
  29  *     -1, on failure
  30  */
  31 static int fit_set_hash_value(void *fit, int noffset, uint8_t *value,
  32                                 int value_len)
  33 {
  34         int ret;
  35
  36         ret = fdt_setprop(fit, noffset, FIT_VALUE_PROP, value, value_len);
  37         if (ret) {
  38                 printf("Can't set hash '%s' property for '%s' node(%s)\n",
  39                        FIT_VALUE_PROP, fit_get_name(fit, noffset, NULL),
  40                        fdt_strerror(ret));
  41                 return ret == -FDT_ERR_NOSPACE ? -ENOSPC : -EIO;
  42         }
  43
  44         return 0;
  45 }
  46
  47 /**
  48  * fit_image_process_hash - Process a single subnode of the images/ node
  49  *
  50  * Check each subnode and process accordingly. For hash nodes we generate
  51  * a hash of the supplised data and store it in the node.
  52  *
  53  * @fit:        pointer to the FIT format image header
  54  * @image_name: name of image being processes (used to display errors)
  55  * @noffset:    subnode offset
  56  * @data:       data to process
  57  * @size:       size of data in bytes
  58  * @return 0 if ok, -1 on error
  59  */
  60 static int fit_image_process_hash(void *fit, const char *image_name,
  61                 int noffset, const void *data, size_t size)
  62 {
  63         uint8_t value[FIT_MAX_HASH_LEN];
  64         const char *node_name;
  65         int value_len;
  66         char *algo;
  67         int ret;
  68
  69         node_name = fit_get_name(fit, noffset, NULL);
  70
  71         if (fit_image_hash_get_algo(fit, noffset, &algo)) {
  72                 printf("Can't get hash algo property for '%s' hash node in '%s' image node\n",
  73                        node_name, image_name);
  74                 return -ENOENT;
  75         }
  76
  77         if (calculate_hash(data, size, algo, value, &value_len)) {
  78                 printf("Unsupported hash algorithm (%s) for '%s' hash node in '%s' image node\n",
  79                        algo, node_name, image_name);
  80                 return -EPROTONOSUPPORT;
  81         }
  82
  83         ret = fit_set_hash_value(fit, noffset, value, value_len);
  84         if (ret) {
  85                 printf("Can't set hash value for '%s' hash node in '%s' image node\n",
  86                        node_name, image_name);
  87                 return ret;
  88         }
  89
  90         return 0;
  91 }
  92
  93 /**
  94  * fit_image_write_sig() - write the signature to a FIT
  95  *
  96  * This writes the signature and signer data to the FIT.
  97  *
  98  * @fit: pointer to the FIT format image header
  99  * @noffset: hash node offset
 100  * @value: signature value to be set
 101  * @value_len: signature value length
 102  * @comment: Text comment to write (NULL for none)
 103  *
 104  * returns
 105  *     0, on success
 106  *     -FDT_ERR_..., on failure
 107  */
 108 static int fit_image_write_sig(void *fit, int noffset, uint8_t *value,
 109                 int value_len, const char *comment, const char *region_prop,
 110                 int region_proplen)
 111 {
 112         int string_size;
 113         int ret;
 114
 115         /*
 116          * Get the current string size, before we update the FIT and add
 117          * more
 118          */
 119         string_size = fdt_size_dt_strings(fit);
 120
 121         ret = fdt_setprop(fit, noffset, FIT_VALUE_PROP, value, value_len);
 122         if (!ret) {
 123                 ret = fdt_setprop_string(fit, noffset, "signer-name",
 124                                          "mkimage");
 125         }
 126         if (!ret) {
 127                 ret = fdt_setprop_string(fit, noffset, "signer-version",
 128                                   PLAIN_VERSION);
 129         }
 130         if (comment && !ret)
 131                 ret = fdt_setprop_string(fit, noffset, "comment", comment);
 132         if (!ret)
 133                 ret = fit_set_timestamp(fit, noffset, time(NULL));
 134         if (region_prop && !ret) {
 135                 uint32_t strdata[2];
 136
 137                 ret = fdt_setprop(fit, noffset, "hashed-nodes",
 138                                    region_prop, region_proplen);
 139                 strdata[0] = 0;
 140                 strdata[1] = cpu_to_fdt32(string_size);
 141                 if (!ret) {
 142                         ret = fdt_setprop(fit, noffset, "hashed-strings",
 143                                           strdata, sizeof(strdata));
 144                 }
 145         }
 146
 147         return ret;
 148 }
 149
 150 static int fit_image_setup_sig(struct image_sign_info *info,
 151                 const char *keydir, void *fit, const char *image_name,
 152                 int noffset, const char *require_keys)
 153 {
 154         const char *node_name;
 155         char *algo_name;
 156
 157         node_name = fit_get_name(fit, noffset, NULL);
 158         if (fit_image_hash_get_algo(fit, noffset, &algo_name)) {
 159                 printf("Can't get algo property for '%s' signature node in '%s' image node\n",
 160                        node_name, image_name);
 161                 return -1;
 162         }
 163
 164         memset(info, '\0', sizeof(*info));
 165         info->keydir = keydir;
 166         info->keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
 167         info->fit = fit;
 168         info->node_offset = noffset;
 169         info->algo = image_get_sig_algo(algo_name);
 170         info->require_keys = require_keys;
 171         if (!info->algo) {
 172                 printf("Unsupported signature algorithm (%s) for '%s' signature node in '%s' image node\n",
 173                        algo_name, node_name, image_name);
 174                 return -1;
 175         }
 176
 177         return 0;
 178 }
 179
 180 /**
 181  * fit_image_process_sig- Process a single subnode of the images/ node
 182  *
 183  * Check each subnode and process accordingly. For signature nodes we
 184  * generate a signed hash of the supplised data and store it in the node.
 185  *
 186  * @keydir:     Directory containing keys to use for signing
 187  * @keydest:    Destination FDT blob to write public keys into
 188  * @fit:        pointer to the FIT format image header
 189  * @image_name: name of image being processes (used to display errors)
 190  * @noffset:    subnode offset
 191  * @data:       data to process
 192  * @size:       size of data in bytes
 193  * @comment:    Comment to add to signature nodes
 194  * @require_keys: Mark all keys as 'required'
 195  * @return 0 if ok, -1 on error
 196  */
 197 static int fit_image_process_sig(const char *keydir, void *keydest,
 198                 void *fit, const char *image_name,
 199                 int noffset, const void *data, size_t size,
 200                 const char *comment, int require_keys)
 201 {
 202         struct image_sign_info info;
 203         struct image_region region;
 204         const char *node_name;
 205         uint8_t *value;
 206         uint value_len;
 207         int ret;
 208
 209         if (fit_image_setup_sig(&info, keydir, fit, image_name, noffset,
 210                                 require_keys ? "image" : NULL))
 211                 return -1;
 212
 213         node_name = fit_get_name(fit, noffset, NULL);
 214         region.data = data;
 215         region.size = size;
 216         ret = info.algo->sign(&info, &region, 1, &value, &value_len);
 217         if (ret) {
 218                 printf("Failed to sign '%s' signature node in '%s' image node: %d\n",
 219                        node_name, image_name, ret);
 220
 221                 /* We allow keys to be missing */
 222                 if (ret == -ENOENT)
 223                         return 0;
 224                 return -1;
 225         }
 226
 227         ret = fit_image_write_sig(fit, noffset, value, value_len, comment,
 228                         NULL, 0);
 229         if (ret) {
 230                 if (ret == -FDT_ERR_NOSPACE)
 231                         return -ENOSPC;
 232                 printf("Can't write signature for '%s' signature node in '%s' conf node: %s\n",
 233                        node_name, image_name, fdt_strerror(ret));
 234                 return -1;
 235         }
 236         free(value);
 237
 238         /* Get keyname again, as FDT has changed and invalidated our pointer */
 239         info.keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
 240
 241         if (keydest)
 242                 ret = info.algo->add_verify_data(&info, keydest);
 243         else
 244                 return -1;
 245
 246         /*
 247          * Write the public key into the supplied FDT file; this might fail
 248          * several times, since we try signing with successively increasing
 249          * size values
 250          */
 251         if (keydest && ret)
 252                 return ret;
 253
 254         return 0;
 255 }
 256
 257 /**
 258  * fit_image_add_verification_data() - calculate/set verig. data for image node
 259  *
 260  * This adds hash and signature values for an component image node.
 261  *
 262  * All existing hash subnodes are checked, if algorithm property is set to
 263  * one of the supported hash algorithms, hash value is computed and
 264  * corresponding hash node property is set, for example:
 265  *
 266  * Input component image node structure:
 267  *
 268  * o image@1 (at image_noffset)
 269  *   | - data = [binary data]
 270  *   o hash@1
 271  *     |- algo = "sha1"
 272  *
 273  * Output component image node structure:
 274  *
 275  * o image@1 (at image_noffset)
 276  *   | - data = [binary data]
 277  *   o hash@1
 278  *     |- algo = "sha1"
 279  *     |- value = sha1(data)
 280  *
 281  * For signature details, please see doc/uImage.FIT/signature.txt
 282  *
 283  * @keydir      Directory containing *.key and *.crt files (or NULL)
 284  * @keydest     FDT Blob to write public keys into (NULL if none)
 285  * @fit:        Pointer to the FIT format image header
 286  * @image_noffset: Requested component image node
 287  * @comment:    Comment to add to signature nodes
 288  * @require_keys: Mark all keys as 'required'
 289  * @return: 0 on success, <0 on failure
 290  */
 291 int fit_image_add_verification_data(const char *keydir, void *keydest,
 292                 void *fit, int image_noffset, const char *comment,
 293                 int require_keys)
 294 {
 295         const char *image_name;
 296         const void *data;
 297         size_t size;
 298         int noffset;
 299
 300         /* Get image data and data length */
 301         if (fit_image_get_data(fit, image_noffset, &data, &size)) {
 302                 printf("Can't get image data/size\n");
 303                 return -1;
 304         }
 305
 306         image_name = fit_get_name(fit, image_noffset, NULL);
 307
 308         /* Process all hash subnodes of the component image node */
 309         for (noffset = fdt_first_subnode(fit, image_noffset);
 310              noffset >= 0;
 311              noffset = fdt_next_subnode(fit, noffset)) {
 312                 const char *node_name;
 313                 int ret = 0;
 314
 315                 /*
 316                  * Check subnode name, must be equal to "hash" or "signature".
 317                  * Multiple hash nodes require unique unit node
 318                  * names, e.g. hash@1, hash@2, signature@1, etc.
 319                  */
 320                 node_name = fit_get_name(fit, noffset, NULL);
 321                 if (!strncmp(node_name, FIT_HASH_NODENAME,
 322                              strlen(FIT_HASH_NODENAME))) {
 323                         ret = fit_image_process_hash(fit, image_name, noffset,
 324                                                 data, size);
 325                 } else if (IMAGE_ENABLE_SIGN && keydir &&
 326                            !strncmp(node_name, FIT_SIG_NODENAME,
 327                                 strlen(FIT_SIG_NODENAME))) {
 328                         ret = fit_image_process_sig(keydir, keydest,
 329                                 fit, image_name, noffset, data, size,
 330                                 comment, require_keys);
 331                 }
 332                 if (ret)
 333                         return ret;
 334         }
 335
 336         return 0;
 337 }
 338
 339 struct strlist {
 340         int count;
 341         char **strings;
 342 };
 343
 344 static void strlist_init(struct strlist *list)
 345 {
 346         memset(list, '\0', sizeof(*list));
 347 }
 348
 349 static void strlist_free(struct strlist *list)
 350 {
 351         int i;
 352
 353         for (i = 0; i < list->count; i++)
 354                 free(list->strings[i]);
 355         free(list->strings);
 356 }
 357
 358 static int strlist_add(struct strlist *list, const char *str)
 359 {
 360         char *dup;
 361
 362         dup = strdup(str);
 363         list->strings = realloc(list->strings,
 364                                 (list->count + 1) * sizeof(char *));
 365         if (!list || !str)
 366                 return -1;
 367         list->strings[list->count++] = dup;
 368
 369         return 0;
 370 }
 371
 372 static const char *fit_config_get_image_list(void *fit, int noffset,
 373                 int *lenp, int *allow_missingp)
 374 {
 375         static const char default_list[] = FIT_KERNEL_PROP "\0"
 376                         FIT_FDT_PROP;
 377         const char *prop;
 378
 379         /* If there is an "image" property, use that */
 380         prop = fdt_getprop(fit, noffset, "sign-images", lenp);
 381         if (prop) {
 382                 *allow_missingp = 0;
 383                 return *lenp ? prop : NULL;
 384         }
 385
 386         /* Default image list */
 387         *allow_missingp = 1;
 388         *lenp = sizeof(default_list);
 389
 390         return default_list;
 391 }
 392
 393 static int fit_config_get_hash_list(void *fit, int conf_noffset,
 394                                     int sig_offset, struct strlist *node_inc)
 395 {
 396         int allow_missing;
 397         const char *prop, *iname, *end;
 398         const char *conf_name, *sig_name;
 399         char name[200], path[200];
 400         int image_count;
 401         int ret, len;
 402
 403         conf_name = fit_get_name(fit, conf_noffset, NULL);
 404         sig_name = fit_get_name(fit, sig_offset, NULL);
 405
 406         /*
 407          * Build a list of nodes we need to hash. We always need the root
 408          * node and the configuration.
 409          */
 410         strlist_init(node_inc);
 411         snprintf(name, sizeof(name), "%s/%s", FIT_CONFS_PATH, conf_name);
 412         if (strlist_add(node_inc, "/") ||
 413             strlist_add(node_inc, name))
 414                 goto err_mem;
 415
 416         /* Get a list of images that we intend to sign */
 417         prop = fit_config_get_image_list(fit, sig_offset, &len,
 418                                         &allow_missing);
 419         if (!prop)
 420                 return 0;
 421
 422         /* Locate the images */
 423         end = prop + len;
 424         image_count = 0;
 425         for (iname = prop; iname < end; iname += strlen(iname) + 1) {
 426                 int noffset;
 427                 int image_noffset;
 428                 int hash_count;
 429
 430                 image_noffset = fit_conf_get_prop_node(fit, conf_noffset,
 431                                                        iname);
 432                 if (image_noffset < 0) {
 433                         printf("Failed to find image '%s' in  configuration '%s/%s'\n",
 434                                iname, conf_name, sig_name);
 435                         if (allow_missing)
 436                                 continue;
 437
 438                         return -ENOENT;
 439                 }
 440
 441                 ret = fdt_get_path(fit, image_noffset, path, sizeof(path));
 442                 if (ret < 0)
 443                         goto err_path;
 444                 if (strlist_add(node_inc, path))
 445                         goto err_mem;
 446
 447                 snprintf(name, sizeof(name), "%s/%s", FIT_CONFS_PATH,
 448                          conf_name);
 449
 450                 /* Add all this image's hashes */
 451                 hash_count = 0;
 452                 for (noffset = fdt_first_subnode(fit, image_noffset);
 453                      noffset >= 0;
 454                      noffset = fdt_next_subnode(fit, noffset)) {
 455                         const char *name = fit_get_name(fit, noffset, NULL);
 456
 457                         if (strncmp(name, FIT_HASH_NODENAME,
 458                                     strlen(FIT_HASH_NODENAME)))
 459                                 continue;
 460                         ret = fdt_get_path(fit, noffset, path, sizeof(path));
 461                         if (ret < 0)
 462                                 goto err_path;
 463                         if (strlist_add(node_inc, path))
 464                                 goto err_mem;
 465                         hash_count++;
 466                 }
 467
 468                 if (!hash_count) {
 469                         printf("Failed to find any hash nodes in configuration '%s/%s' image '%s' - without these it is not possible to verify this image\n",
 470                                conf_name, sig_name, iname);
 471                         return -ENOMSG;
 472                 }
 473
 474                 image_count++;
 475         }
 476
 477         if (!image_count) {
 478                 printf("Failed to find any images for configuration '%s/%s'\n",
 479                        conf_name, sig_name);
 480                 return -ENOMSG;
 481         }
 482
 483         return 0;
 484
 485 err_mem:
 486         printf("Out of memory processing configuration '%s/%s'\n", conf_name,
 487                sig_name);
 488         return -ENOMEM;
 489
 490 err_path:
 491         printf("Failed to get path for image '%s' in configuration '%s/%s': %s\n",
 492                iname, conf_name, sig_name, fdt_strerror(ret));
 493         return -ENOENT;
 494 }
 495
 496 static int fit_config_get_data(void *fit, int conf_noffset, int noffset,
 497                 struct image_region **regionp, int *region_countp,
 498                 char **region_propp, int *region_proplen)
 499 {
 500         char * const exc_prop[] = {"data"};
 501         struct strlist node_inc;
 502         struct image_region *region;
 503         struct fdt_region fdt_regions[100];
 504         const char *conf_name, *sig_name;
 505         char path[200];
 506         int count, i;
 507         char *region_prop;
 508         int ret, len;
 509
 510         conf_name = fit_get_name(fit, conf_noffset, NULL);
 511         sig_name = fit_get_name(fit, conf_noffset, NULL);
 512         debug("%s: conf='%s', sig='%s'\n", __func__, conf_name, sig_name);
 513
 514         /* Get a list of nodes we want to hash */
 515         ret = fit_config_get_hash_list(fit, conf_noffset, noffset, &node_inc);
 516         if (ret)
 517                 return ret;
 518
 519         /* Get a list of regions to hash */
 520         count = fdt_find_regions(fit, node_inc.strings, node_inc.count,
 521                         exc_prop, ARRAY_SIZE(exc_prop),
 522                         fdt_regions, ARRAY_SIZE(fdt_regions),
 523                         path, sizeof(path), 1);
 524         if (count < 0) {
 525                 printf("Failed to hash configuration '%s/%s': %s\n", conf_name,
 526                        sig_name, fdt_strerror(ret));
 527                 return -EIO;
 528         }
 529         if (count == 0) {
 530                 printf("No data to hash for configuration '%s/%s': %s\n",
 531                        conf_name, sig_name, fdt_strerror(ret));
 532                 return -EINVAL;
 533         }
 534
 535         /* Build our list of data blocks */
 536         region = fit_region_make_list(fit, fdt_regions, count, NULL);
 537         if (!region) {
 538                 printf("Out of memory hashing configuration '%s/%s'\n",
 539                        conf_name, sig_name);
 540                 return -ENOMEM;
 541         }
 542
 543         /* Create a list of all hashed properties */
 544         debug("Hash nodes:\n");
 545         for (i = len = 0; i < node_inc.count; i++) {
 546                 debug("   %s\n", node_inc.strings[i]);
 547                 len += strlen(node_inc.strings[i]) + 1;
 548         }
 549         region_prop = malloc(len);
 550         if (!region_prop) {
 551                 printf("Out of memory setting up regions for configuration '%s/%s'\n",
 552                        conf_name, sig_name);
 553                 return -ENOMEM;
 554         }
 555         for (i = len = 0; i < node_inc.count;
 556              len += strlen(node_inc.strings[i]) + 1, i++)
 557                 strcpy(region_prop + len, node_inc.strings[i]);
 558         strlist_free(&node_inc);
 559
 560         *region_countp = count;
 561         *regionp = region;
 562         *region_propp = region_prop;
 563         *region_proplen = len;
 564
 565         return 0;
 566 }
 567
 568 static int fit_config_process_sig(const char *keydir, void *keydest,
 569                 void *fit, const char *conf_name, int conf_noffset,
 570                 int noffset, const char *comment, int require_keys)
 571 {
 572         struct image_sign_info info;
 573         const char *node_name;
 574         struct image_region *region;
 575         char *region_prop;
 576         int region_proplen;
 577         int region_count;
 578         uint8_t *value;
 579         uint value_len;
 580         int ret;
 581
 582         node_name = fit_get_name(fit, noffset, NULL);
 583         if (fit_config_get_data(fit, conf_noffset, noffset, &region,
 584                                 &region_count, &region_prop, &region_proplen))
 585                 return -1;
 586
 587         if (fit_image_setup_sig(&info, keydir, fit, conf_name, noffset,
 588                                 require_keys ? "conf" : NULL))
 589                 return -1;
 590
 591         ret = info.algo->sign(&info, region, region_count, &value, &value_len);
 592         free(region);
 593         if (ret) {
 594                 printf("Failed to sign '%s' signature node in '%s' conf node\n",
 595                        node_name, conf_name);
 596
 597                 /* We allow keys to be missing */
 598                 if (ret == -ENOENT)
 599                         return 0;
 600                 return -1;
 601         }
 602
 603         ret = fit_image_write_sig(fit, noffset, value, value_len, comment,
 604                                 region_prop, region_proplen);
 605         if (ret) {
 606                 if (ret == -FDT_ERR_NOSPACE)
 607                         return -ENOSPC;
 608                 printf("Can't write signature for '%s' signature node in '%s' conf node: %s\n",
 609                        node_name, conf_name, fdt_strerror(ret));
 610                 return -1;
 611         }
 612         free(value);
 613         free(region_prop);
 614
 615         /* Get keyname again, as FDT has changed and invalidated our pointer */
 616         info.keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
 617
 618         /* Write the public key into the supplied FDT file */
 619         if (keydest) {
 620                 ret = info.algo->add_verify_data(&info, keydest);
 621                 if (ret == -ENOSPC)
 622                         return -ENOSPC;
 623                 if (ret) {
 624                         printf("Failed to add verification data for '%s' signature node in '%s' image node\n",
 625                                node_name, conf_name);
 626                 }
 627                 return ret;
 628         }
 629
 630         return 0;
 631 }
 632
 633 static int fit_config_add_verification_data(const char *keydir, void *keydest,
 634                 void *fit, int conf_noffset, const char *comment,
 635                 int require_keys)
 636 {
 637         const char *conf_name;
 638         int noffset;
 639
 640         conf_name = fit_get_name(fit, conf_noffset, NULL);
 641
 642         /* Process all hash subnodes of the configuration node */
 643         for (noffset = fdt_first_subnode(fit, conf_noffset);
 644              noffset >= 0;
 645              noffset = fdt_next_subnode(fit, noffset)) {
 646                 const char *node_name;
 647                 int ret = 0;
 648
 649                 node_name = fit_get_name(fit, noffset, NULL);
 650                 if (!strncmp(node_name, FIT_SIG_NODENAME,
 651                              strlen(FIT_SIG_NODENAME))) {
 652                         ret = fit_config_process_sig(keydir, keydest,
 653                                 fit, conf_name, conf_noffset, noffset, comment,
 654                                 require_keys);
 655                 }
 656                 if (ret)
 657                         return ret;
 658         }
 659
 660         return 0;
 661 }
 662
 663 int fit_add_verification_data(const char *keydir, void *keydest, void *fit,
 664                               const char *comment, int require_keys)
 665 {
 666         int images_noffset, confs_noffset;
 667         int noffset;
 668         int ret;
 669
 670         /* Find images parent node offset */
 671         images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
 672         if (images_noffset < 0) {
 673                 printf("Can't find images parent node '%s' (%s)\n",
 674                        FIT_IMAGES_PATH, fdt_strerror(images_noffset));
 675                 return images_noffset;
 676         }
 677
 678         /* Process its subnodes, print out component images details */
 679         for (noffset = fdt_first_subnode(fit, images_noffset);
 680              noffset >= 0;
 681              noffset = fdt_next_subnode(fit, noffset)) {
 682                 /*
 683                  * Direct child node of the images parent node,
 684                  * i.e. component image node.
 685                  */
 686                 ret = fit_image_add_verification_data(keydir, keydest,
 687                                 fit, noffset, comment, require_keys);
 688                 if (ret)
 689                         return ret;
 690         }
 691
 692         /* If there are no keys, we can't sign configurations */
 693         if (!IMAGE_ENABLE_SIGN || !keydir)
 694                 return 0;
 695
 696         /* Find configurations parent node offset */
 697         confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH);
 698         if (confs_noffset < 0) {
 699                 printf("Can't find images parent node '%s' (%s)\n",
 700                        FIT_CONFS_PATH, fdt_strerror(confs_noffset));
 701                 return -ENOENT;
 702         }
 703
 704         /* Process its subnodes, print out component images details */
 705         for (noffset = fdt_first_subnode(fit, confs_noffset);
 706              noffset >= 0;
 707              noffset = fdt_next_subnode(fit, noffset)) {
 708                 ret = fit_config_add_verification_data(keydir, keydest,
 709                                                        fit, noffset, comment,
 710                                                        require_keys);
 711                 if (ret)
 712                         return ret;
 713         }
 714
 715         return 0;
 716 }
 717
 718 #ifdef CONFIG_FIT_SIGNATURE
 719 int fit_check_sign(const void *fit, const void *key)
 720 {
 721         int cfg_noffset;
 722         int ret;
 723
 724         cfg_noffset = fit_conf_get_node(fit, NULL);
 725         if (!cfg_noffset)
 726                 return -1;
 727
 728         printf("Verifying Hash Integrity ... ");
 729         ret = fit_config_verify(fit, cfg_noffset);
 730         if (ret)
 731                 return ret;
 732         ret = bootm_host_load_images(fit, cfg_noffset);
 733
 734         return ret;
 735 }
 736 #endif