blob: 0d5c88ca73c6894fded23b5c4e0359c5cb63acdf [file] [log] [blame]
Simon Glass604f23d2013-05-07 06:11:54 +00001/*
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 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02009 * SPDX-License-Identifier: GPL-2.0+
Simon Glass604f23d2013-05-07 06:11:54 +000010 */
11
12#include "mkimage.h"
Simon Glass604f23d2013-05-07 06:11:54 +000013#include <image.h>
Simon Glass56518e72013-06-13 15:10:01 -070014#include <version.h>
Simon Glass604f23d2013-05-07 06:11:54 +000015
16/**
Simon Glassb7260912013-05-07 06:11:56 +000017 * fit_set_hash_value - set hash value in requested has node
18 * @fit: pointer to the FIT format image header
19 * @noffset: hash node offset
20 * @value: hash value to be set
21 * @value_len: hash value length
22 *
23 * fit_set_hash_value() attempts to set hash value in a node at offset
24 * given and returns operation status to the caller.
25 *
26 * returns
27 * 0, on success
28 * -1, on failure
29 */
30static int fit_set_hash_value(void *fit, int noffset, uint8_t *value,
31 int value_len)
32{
33 int ret;
34
35 ret = fdt_setprop(fit, noffset, FIT_VALUE_PROP, value, value_len);
36 if (ret) {
37 printf("Can't set hash '%s' property for '%s' node(%s)\n",
38 FIT_VALUE_PROP, fit_get_name(fit, noffset, NULL),
39 fdt_strerror(ret));
40 return -1;
41 }
42
43 return 0;
44}
45
46/**
Simon Glass94e5fa42013-05-07 06:11:55 +000047 * fit_image_process_hash - Process a single subnode of the images/ node
48 *
49 * Check each subnode and process accordingly. For hash nodes we generate
50 * a hash of the supplised data and store it in the node.
51 *
52 * @fit: pointer to the FIT format image header
53 * @image_name: name of image being processes (used to display errors)
54 * @noffset: subnode offset
55 * @data: data to process
56 * @size: size of data in bytes
57 * @return 0 if ok, -1 on error
58 */
59static int fit_image_process_hash(void *fit, const char *image_name,
60 int noffset, const void *data, size_t size)
61{
62 uint8_t value[FIT_MAX_HASH_LEN];
Simon Glassbbb467d2013-05-07 06:12:01 +000063 const char *node_name;
Simon Glass94e5fa42013-05-07 06:11:55 +000064 int value_len;
65 char *algo;
66
Simon Glassbbb467d2013-05-07 06:12:01 +000067 node_name = fit_get_name(fit, noffset, NULL);
Simon Glass94e5fa42013-05-07 06:11:55 +000068
69 if (fit_image_hash_get_algo(fit, noffset, &algo)) {
70 printf("Can't get hash algo property for '%s' hash node in '%s' image node\n",
Simon Glassbbb467d2013-05-07 06:12:01 +000071 node_name, image_name);
Simon Glass94e5fa42013-05-07 06:11:55 +000072 return -1;
73 }
74
75 if (calculate_hash(data, size, algo, value, &value_len)) {
76 printf("Unsupported hash algorithm (%s) for '%s' hash node in '%s' image node\n",
Simon Glassbbb467d2013-05-07 06:12:01 +000077 algo, node_name, image_name);
Simon Glass94e5fa42013-05-07 06:11:55 +000078 return -1;
79 }
80
Simon Glassb7260912013-05-07 06:11:56 +000081 if (fit_set_hash_value(fit, noffset, value, value_len)) {
Simon Glass94e5fa42013-05-07 06:11:55 +000082 printf("Can't set hash value for '%s' hash node in '%s' image node\n",
Simon Glassbbb467d2013-05-07 06:12:01 +000083 node_name, image_name);
Simon Glass94e5fa42013-05-07 06:11:55 +000084 return -1;
85 }
86
87 return 0;
88}
89
90/**
Simon Glass56518e72013-06-13 15:10:01 -070091 * fit_image_write_sig() - write the signature to a FIT
Simon Glass604f23d2013-05-07 06:11:54 +000092 *
Simon Glass56518e72013-06-13 15:10:01 -070093 * This writes the signature and signer data to the FIT.
94 *
95 * @fit: pointer to the FIT format image header
96 * @noffset: hash node offset
97 * @value: signature value to be set
98 * @value_len: signature value length
99 * @comment: Text comment to write (NULL for none)
100 *
101 * returns
102 * 0, on success
103 * -FDT_ERR_..., on failure
104 */
105static int fit_image_write_sig(void *fit, int noffset, uint8_t *value,
106 int value_len, const char *comment, const char *region_prop,
107 int region_proplen)
108{
109 int string_size;
110 int ret;
111
112 /*
113 * Get the current string size, before we update the FIT and add
114 * more
115 */
116 string_size = fdt_size_dt_strings(fit);
117
118 ret = fdt_setprop(fit, noffset, FIT_VALUE_PROP, value, value_len);
119 if (!ret) {
120 ret = fdt_setprop_string(fit, noffset, "signer-name",
121 "mkimage");
122 }
123 if (!ret) {
124 ret = fdt_setprop_string(fit, noffset, "signer-version",
125 PLAIN_VERSION);
126 }
127 if (comment && !ret)
128 ret = fdt_setprop_string(fit, noffset, "comment", comment);
129 if (!ret)
130 ret = fit_set_timestamp(fit, noffset, time(NULL));
131 if (region_prop && !ret) {
132 uint32_t strdata[2];
133
134 ret = fdt_setprop(fit, noffset, "hashed-nodes",
135 region_prop, region_proplen);
136 strdata[0] = 0;
137 strdata[1] = cpu_to_fdt32(string_size);
138 if (!ret) {
139 ret = fdt_setprop(fit, noffset, "hashed-strings",
140 strdata, sizeof(strdata));
141 }
142 }
143
144 return ret;
145}
146
147static int fit_image_setup_sig(struct image_sign_info *info,
148 const char *keydir, void *fit, const char *image_name,
149 int noffset, const char *require_keys)
150{
151 const char *node_name;
152 char *algo_name;
153
154 node_name = fit_get_name(fit, noffset, NULL);
155 if (fit_image_hash_get_algo(fit, noffset, &algo_name)) {
156 printf("Can't get algo property for '%s' signature node in '%s' image node\n",
157 node_name, image_name);
158 return -1;
159 }
160
161 memset(info, '\0', sizeof(*info));
162 info->keydir = keydir;
163 info->keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
164 info->fit = fit;
165 info->node_offset = noffset;
166 info->algo = image_get_sig_algo(algo_name);
167 info->require_keys = require_keys;
168 if (!info->algo) {
169 printf("Unsupported signature algorithm (%s) for '%s' signature node in '%s' image node\n",
170 algo_name, node_name, image_name);
171 return -1;
172 }
173
174 return 0;
175}
176
177/**
178 * fit_image_process_sig- Process a single subnode of the images/ node
179 *
180 * Check each subnode and process accordingly. For signature nodes we
181 * generate a signed hash of the supplised data and store it in the node.
182 *
183 * @keydir: Directory containing keys to use for signing
184 * @keydest: Destination FDT blob to write public keys into
185 * @fit: pointer to the FIT format image header
186 * @image_name: name of image being processes (used to display errors)
187 * @noffset: subnode offset
188 * @data: data to process
189 * @size: size of data in bytes
190 * @comment: Comment to add to signature nodes
191 * @require_keys: Mark all keys as 'required'
192 * @return 0 if ok, -1 on error
193 */
194static int fit_image_process_sig(const char *keydir, void *keydest,
195 void *fit, const char *image_name,
196 int noffset, const void *data, size_t size,
197 const char *comment, int require_keys)
198{
199 struct image_sign_info info;
200 struct image_region region;
201 const char *node_name;
202 uint8_t *value;
203 uint value_len;
204 int ret;
205
206 if (fit_image_setup_sig(&info, keydir, fit, image_name, noffset,
207 require_keys ? "image" : NULL))
208 return -1;
209
210 node_name = fit_get_name(fit, noffset, NULL);
211 region.data = data;
212 region.size = size;
213 ret = info.algo->sign(&info, &region, 1, &value, &value_len);
214 if (ret) {
215 printf("Failed to sign '%s' signature node in '%s' image node: %d\n",
216 node_name, image_name, ret);
217
218 /* We allow keys to be missing */
219 if (ret == -ENOENT)
220 return 0;
221 return -1;
222 }
223
224 ret = fit_image_write_sig(fit, noffset, value, value_len, comment,
225 NULL, 0);
226 if (ret) {
227 printf("Can't write signature for '%s' signature node in '%s' image node: %s\n",
228 node_name, image_name, fdt_strerror(ret));
229 return -1;
230 }
231 free(value);
232
233 /* Get keyname again, as FDT has changed and invalidated our pointer */
234 info.keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
235
236 /* Write the public key into the supplied FDT file */
237 if (keydest && info.algo->add_verify_data(&info, keydest)) {
238 printf("Failed to add verification data for '%s' signature node in '%s' image node\n",
239 node_name, image_name);
240 return -1;
241 }
242
243 return 0;
244}
245
246/**
247 * fit_image_add_verification_data() - calculate/set verig. data for image node
248 *
249 * This adds hash and signature values for an component image node.
Simon Glassbbb467d2013-05-07 06:12:01 +0000250 *
251 * All existing hash subnodes are checked, if algorithm property is set to
252 * one of the supported hash algorithms, hash value is computed and
253 * corresponding hash node property is set, for example:
Simon Glass604f23d2013-05-07 06:11:54 +0000254 *
255 * Input component image node structure:
256 *
257 * o image@1 (at image_noffset)
258 * | - data = [binary data]
259 * o hash@1
260 * |- algo = "sha1"
261 *
262 * Output component image node structure:
263 *
264 * o image@1 (at image_noffset)
265 * | - data = [binary data]
266 * o hash@1
267 * |- algo = "sha1"
268 * |- value = sha1(data)
269 *
Simon Glassbbb467d2013-05-07 06:12:01 +0000270 * For signature details, please see doc/uImage.FIT/signature.txt
271 *
Simon Glass56518e72013-06-13 15:10:01 -0700272 * @keydir Directory containing *.key and *.crt files (or NULL)
273 * @keydest FDT Blob to write public keys into (NULL if none)
Simon Glassbbb467d2013-05-07 06:12:01 +0000274 * @fit: Pointer to the FIT format image header
275 * @image_noffset: Requested component image node
Simon Glass56518e72013-06-13 15:10:01 -0700276 * @comment: Comment to add to signature nodes
277 * @require_keys: Mark all keys as 'required'
Simon Glassbbb467d2013-05-07 06:12:01 +0000278 * @return: 0 on success, <0 on failure
Simon Glass604f23d2013-05-07 06:11:54 +0000279 */
Simon Glass56518e72013-06-13 15:10:01 -0700280int fit_image_add_verification_data(const char *keydir, void *keydest,
281 void *fit, int image_noffset, const char *comment,
282 int require_keys)
Simon Glass604f23d2013-05-07 06:11:54 +0000283{
Simon Glassbbb467d2013-05-07 06:12:01 +0000284 const char *image_name;
Simon Glass604f23d2013-05-07 06:11:54 +0000285 const void *data;
286 size_t size;
Simon Glass604f23d2013-05-07 06:11:54 +0000287 int noffset;
Simon Glass604f23d2013-05-07 06:11:54 +0000288
289 /* Get image data and data length */
290 if (fit_image_get_data(fit, image_noffset, &data, &size)) {
291 printf("Can't get image data/size\n");
292 return -1;
293 }
294
Simon Glass94e5fa42013-05-07 06:11:55 +0000295 image_name = fit_get_name(fit, image_noffset, NULL);
296
Simon Glass604f23d2013-05-07 06:11:54 +0000297 /* Process all hash subnodes of the component image node */
Simon Glassbbb467d2013-05-07 06:12:01 +0000298 for (noffset = fdt_first_subnode(fit, image_noffset);
299 noffset >= 0;
300 noffset = fdt_next_subnode(fit, noffset)) {
301 const char *node_name;
302 int ret = 0;
303
304 /*
305 * Check subnode name, must be equal to "hash" or "signature".
306 * Multiple hash nodes require unique unit node
307 * names, e.g. hash@1, hash@2, signature@1, etc.
308 */
309 node_name = fit_get_name(fit, noffset, NULL);
310 if (!strncmp(node_name, FIT_HASH_NODENAME,
311 strlen(FIT_HASH_NODENAME))) {
312 ret = fit_image_process_hash(fit, image_name, noffset,
313 data, size);
Simon Glass56518e72013-06-13 15:10:01 -0700314 } else if (IMAGE_ENABLE_SIGN && keydir &&
315 !strncmp(node_name, FIT_SIG_NODENAME,
316 strlen(FIT_SIG_NODENAME))) {
317 ret = fit_image_process_sig(keydir, keydest,
318 fit, image_name, noffset, data, size,
319 comment, require_keys);
Simon Glass604f23d2013-05-07 06:11:54 +0000320 }
Simon Glassbbb467d2013-05-07 06:12:01 +0000321 if (ret)
322 return -1;
323 }
324
325 return 0;
326}
327
Simon Glass4d098522013-06-13 15:10:09 -0700328struct strlist {
329 int count;
330 char **strings;
331};
332
333static void strlist_init(struct strlist *list)
334{
335 memset(list, '\0', sizeof(*list));
336}
337
338static void strlist_free(struct strlist *list)
339{
340 int i;
341
342 for (i = 0; i < list->count; i++)
343 free(list->strings[i]);
344 free(list->strings);
345}
346
347static int strlist_add(struct strlist *list, const char *str)
348{
349 char *dup;
350
351 dup = strdup(str);
352 list->strings = realloc(list->strings,
353 (list->count + 1) * sizeof(char *));
354 if (!list || !str)
355 return -1;
356 list->strings[list->count++] = dup;
357
358 return 0;
359}
360
361static const char *fit_config_get_image_list(void *fit, int noffset,
362 int *lenp, int *allow_missingp)
363{
364 static const char default_list[] = FIT_KERNEL_PROP "\0"
365 FIT_FDT_PROP;
366 const char *prop;
367
368 /* If there is an "image" property, use that */
369 prop = fdt_getprop(fit, noffset, "sign-images", lenp);
370 if (prop) {
371 *allow_missingp = 0;
372 return *lenp ? prop : NULL;
373 }
374
375 /* Default image list */
376 *allow_missingp = 1;
377 *lenp = sizeof(default_list);
378
379 return default_list;
380}
381
382static int fit_config_get_hash_list(void *fit, int conf_noffset,
383 int sig_offset, struct strlist *node_inc)
384{
385 int allow_missing;
386 const char *prop, *iname, *end;
387 const char *conf_name, *sig_name;
388 char name[200], path[200];
389 int image_count;
390 int ret, len;
391
392 conf_name = fit_get_name(fit, conf_noffset, NULL);
393 sig_name = fit_get_name(fit, sig_offset, NULL);
394
395 /*
396 * Build a list of nodes we need to hash. We always need the root
397 * node and the configuration.
398 */
399 strlist_init(node_inc);
400 snprintf(name, sizeof(name), "%s/%s", FIT_CONFS_PATH, conf_name);
401 if (strlist_add(node_inc, "/") ||
402 strlist_add(node_inc, name))
403 goto err_mem;
404
405 /* Get a list of images that we intend to sign */
406 prop = fit_config_get_image_list(fit, conf_noffset, &len,
407 &allow_missing);
408 if (!prop)
409 return 0;
410
411 /* Locate the images */
412 end = prop + len;
413 image_count = 0;
414 for (iname = prop; iname < end; iname += strlen(iname) + 1) {
415 int noffset;
416 int image_noffset;
417 int hash_count;
418
419 image_noffset = fit_conf_get_prop_node(fit, conf_noffset,
420 iname);
421 if (image_noffset < 0) {
422 printf("Failed to find image '%s' in configuration '%s/%s'\n",
423 iname, conf_name, sig_name);
424 if (allow_missing)
425 continue;
426
427 return -ENOENT;
428 }
429
430 ret = fdt_get_path(fit, image_noffset, path, sizeof(path));
431 if (ret < 0)
432 goto err_path;
433 if (strlist_add(node_inc, path))
434 goto err_mem;
435
436 snprintf(name, sizeof(name), "%s/%s", FIT_CONFS_PATH,
437 conf_name);
438
439 /* Add all this image's hashes */
440 hash_count = 0;
441 for (noffset = fdt_first_subnode(fit, image_noffset);
442 noffset >= 0;
443 noffset = fdt_next_subnode(fit, noffset)) {
444 const char *name = fit_get_name(fit, noffset, NULL);
445
446 if (strncmp(name, FIT_HASH_NODENAME,
447 strlen(FIT_HASH_NODENAME)))
448 continue;
449 ret = fdt_get_path(fit, noffset, path, sizeof(path));
450 if (ret < 0)
451 goto err_path;
452 if (strlist_add(node_inc, path))
453 goto err_mem;
454 hash_count++;
455 }
456
457 if (!hash_count) {
458 printf("Failed to find any hash nodes in configuration '%s/%s' image '%s' - without these it is not possible to verify this image\n",
459 conf_name, sig_name, iname);
460 return -ENOMSG;
461 }
462
463 image_count++;
464 }
465
466 if (!image_count) {
467 printf("Failed to find any images for configuration '%s/%s'\n",
468 conf_name, sig_name);
469 return -ENOMSG;
470 }
471
472 return 0;
473
474err_mem:
475 printf("Out of memory processing configuration '%s/%s'\n", conf_name,
476 sig_name);
477 return -ENOMEM;
478
479err_path:
480 printf("Failed to get path for image '%s' in configuration '%s/%s': %s\n",
481 iname, conf_name, sig_name, fdt_strerror(ret));
482 return -ENOENT;
483}
484
485static int fit_config_get_data(void *fit, int conf_noffset, int noffset,
486 struct image_region **regionp, int *region_countp,
487 char **region_propp, int *region_proplen)
488{
489 char * const exc_prop[] = {"data"};
490 struct strlist node_inc;
491 struct image_region *region;
492 struct fdt_region fdt_regions[100];
493 const char *conf_name, *sig_name;
494 char path[200];
495 int count, i;
496 char *region_prop;
497 int ret, len;
498
499 conf_name = fit_get_name(fit, conf_noffset, NULL);
500 sig_name = fit_get_name(fit, conf_noffset, NULL);
501 debug("%s: conf='%s', sig='%s'\n", __func__, conf_name, sig_name);
502
503 /* Get a list of nodes we want to hash */
504 ret = fit_config_get_hash_list(fit, conf_noffset, noffset, &node_inc);
505 if (ret)
506 return ret;
507
508 /* Get a list of regions to hash */
509 count = fdt_find_regions(fit, node_inc.strings, node_inc.count,
510 exc_prop, ARRAY_SIZE(exc_prop),
511 fdt_regions, ARRAY_SIZE(fdt_regions),
512 path, sizeof(path), 1);
513 if (count < 0) {
514 printf("Failed to hash configuration '%s/%s': %s\n", conf_name,
515 sig_name, fdt_strerror(ret));
516 return -EIO;
517 }
518 if (count == 0) {
519 printf("No data to hash for configuration '%s/%s': %s\n",
520 conf_name, sig_name, fdt_strerror(ret));
521 return -EINVAL;
522 }
523
524 /* Build our list of data blocks */
525 region = fit_region_make_list(fit, fdt_regions, count, NULL);
526 if (!region) {
527 printf("Out of memory hashing configuration '%s/%s'\n",
528 conf_name, sig_name);
529 return -ENOMEM;
530 }
531
532 /* Create a list of all hashed properties */
533 debug("Hash nodes:\n");
534 for (i = len = 0; i < node_inc.count; i++) {
535 debug(" %s\n", node_inc.strings[i]);
536 len += strlen(node_inc.strings[i]) + 1;
537 }
538 region_prop = malloc(len);
539 if (!region_prop) {
540 printf("Out of memory setting up regions for configuration '%s/%s'\n",
541 conf_name, sig_name);
542 return -ENOMEM;
543 }
544 for (i = len = 0; i < node_inc.count;
545 len += strlen(node_inc.strings[i]) + 1, i++)
546 strcpy(region_prop + len, node_inc.strings[i]);
547 strlist_free(&node_inc);
548
549 *region_countp = count;
550 *regionp = region;
551 *region_propp = region_prop;
552 *region_proplen = len;
553
554 return 0;
555}
556
557static int fit_config_process_sig(const char *keydir, void *keydest,
558 void *fit, const char *conf_name, int conf_noffset,
559 int noffset, const char *comment, int require_keys)
560{
561 struct image_sign_info info;
562 const char *node_name;
563 struct image_region *region;
564 char *region_prop;
565 int region_proplen;
566 int region_count;
567 uint8_t *value;
568 uint value_len;
569 int ret;
570
571 node_name = fit_get_name(fit, noffset, NULL);
572 if (fit_config_get_data(fit, conf_noffset, noffset, &region,
573 &region_count, &region_prop, &region_proplen))
574 return -1;
575
576 if (fit_image_setup_sig(&info, keydir, fit, conf_name, noffset,
577 require_keys ? "conf" : NULL))
578 return -1;
579
580 ret = info.algo->sign(&info, region, region_count, &value, &value_len);
581 free(region);
582 if (ret) {
583 printf("Failed to sign '%s' signature node in '%s' conf node\n",
584 node_name, conf_name);
585
586 /* We allow keys to be missing */
587 if (ret == -ENOENT)
588 return 0;
589 return -1;
590 }
591
592 if (fit_image_write_sig(fit, noffset, value, value_len, comment,
593 region_prop, region_proplen)) {
594 printf("Can't write signature for '%s' signature node in '%s' conf node\n",
595 node_name, conf_name);
596 return -1;
597 }
598 free(value);
599 free(region_prop);
600
601 /* Get keyname again, as FDT has changed and invalidated our pointer */
602 info.keyname = fdt_getprop(fit, noffset, "key-name-hint", NULL);
603
604 /* Write the public key into the supplied FDT file */
605 if (keydest && info.algo->add_verify_data(&info, keydest)) {
606 printf("Failed to add verification data for '%s' signature node in '%s' image node\n",
607 node_name, conf_name);
608 return -1;
609 }
610
611 return 0;
612}
613
614static int fit_config_add_verification_data(const char *keydir, void *keydest,
615 void *fit, int conf_noffset, const char *comment,
616 int require_keys)
617{
618 const char *conf_name;
619 int noffset;
620
621 conf_name = fit_get_name(fit, conf_noffset, NULL);
622
623 /* Process all hash subnodes of the configuration node */
624 for (noffset = fdt_first_subnode(fit, conf_noffset);
625 noffset >= 0;
626 noffset = fdt_next_subnode(fit, noffset)) {
627 const char *node_name;
628 int ret = 0;
629
630 node_name = fit_get_name(fit, noffset, NULL);
631 if (!strncmp(node_name, FIT_SIG_NODENAME,
632 strlen(FIT_SIG_NODENAME))) {
633 ret = fit_config_process_sig(keydir, keydest,
634 fit, conf_name, conf_noffset, noffset, comment,
635 require_keys);
636 }
637 if (ret)
638 return ret;
639 }
640
641 return 0;
642}
643
Simon Glass56518e72013-06-13 15:10:01 -0700644int fit_add_verification_data(const char *keydir, void *keydest, void *fit,
645 const char *comment, int require_keys)
Simon Glassbbb467d2013-05-07 06:12:01 +0000646{
Simon Glass4d098522013-06-13 15:10:09 -0700647 int images_noffset, confs_noffset;
Simon Glassbbb467d2013-05-07 06:12:01 +0000648 int noffset;
649 int ret;
650
651 /* Find images parent node offset */
652 images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
653 if (images_noffset < 0) {
654 printf("Can't find images parent node '%s' (%s)\n",
655 FIT_IMAGES_PATH, fdt_strerror(images_noffset));
656 return images_noffset;
657 }
658
659 /* Process its subnodes, print out component images details */
660 for (noffset = fdt_first_subnode(fit, images_noffset);
661 noffset >= 0;
662 noffset = fdt_next_subnode(fit, noffset)) {
663 /*
664 * Direct child node of the images parent node,
665 * i.e. component image node.
666 */
Simon Glass56518e72013-06-13 15:10:01 -0700667 ret = fit_image_add_verification_data(keydir, keydest,
668 fit, noffset, comment, require_keys);
Simon Glassbbb467d2013-05-07 06:12:01 +0000669 if (ret)
670 return ret;
Simon Glass604f23d2013-05-07 06:11:54 +0000671 }
672
Simon Glass4d098522013-06-13 15:10:09 -0700673 /* If there are no keys, we can't sign configurations */
674 if (!IMAGE_ENABLE_SIGN || !keydir)
675 return 0;
676
677 /* Find configurations parent node offset */
678 confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH);
679 if (confs_noffset < 0) {
680 printf("Can't find images parent node '%s' (%s)\n",
681 FIT_IMAGES_PATH, fdt_strerror(confs_noffset));
682 return -ENOENT;
683 }
684
685 /* Process its subnodes, print out component images details */
686 for (noffset = fdt_first_subnode(fit, confs_noffset);
687 noffset >= 0;
688 noffset = fdt_next_subnode(fit, noffset)) {
689 ret = fit_config_add_verification_data(keydir, keydest,
690 fit, noffset, comment,
691 require_keys);
692 if (ret)
693 return ret;
694 }
695
Simon Glass604f23d2013-05-07 06:11:54 +0000696 return 0;
697}