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