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 false);
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 false);
47 if (destfd < 0) {
48 ret = -EIO;
49 goto err_keydest;
50 }
51 destfd_size = dest_sbuf.st_size;
52 }
53
54 /* for first image creation, add a timestamp at offset 0 i.e., root */
55 if (params->datafile) {
56 time_t time = imagetool_get_source_date(params->cmdname,
57 sbuf.st_mtime);
58 ret = fit_set_timestamp(ptr, 0, time);
59 }
60
61 if (!ret) {
62 ret = fit_cipher_data(params->keydir, dest_blob, ptr,
63 params->comment,
64 params->require_keys,
65 params->engine_id,
66 params->cmdname);
67 }
68
69 if (!ret) {
70 ret = fit_add_verification_data(params->keydir, dest_blob, ptr,
71 params->comment,
72 params->require_keys,
73 params->engine_id,
74 params->cmdname);
75 }
76
77 if (dest_blob) {
78 munmap(dest_blob, destfd_size);
79 close(destfd);
80 }
81
82 err_keydest:
83 munmap(ptr, sbuf.st_size);
84 close(tfd);
85 return ret;
86 }
87
88 /**
89 * fit_calc_size() - Calculate the approximate size of the FIT we will generate
90 */
fit_calc_size(struct image_tool_params * params)91 static int fit_calc_size(struct image_tool_params *params)
92 {
93 struct content_info *cont;
94 int size, total_size;
95
96 size = imagetool_get_filesize(params, params->datafile);
97 if (size < 0)
98 return -1;
99 total_size = size;
100
101 if (params->fit_ramdisk) {
102 size = imagetool_get_filesize(params, params->fit_ramdisk);
103 if (size < 0)
104 return -1;
105 total_size += size;
106 }
107
108 for (cont = params->content_head; cont; cont = cont->next) {
109 size = imagetool_get_filesize(params, cont->fname);
110 if (size < 0)
111 return -1;
112
113 /* Add space for properties */
114 total_size += size + 300;
115 }
116
117 /* Add plenty of space for headers, properties, nodes, etc. */
118 total_size += 4096;
119
120 return total_size;
121 }
122
fdt_property_file(struct image_tool_params * params,void * fdt,const char * name,const char * fname)123 static int fdt_property_file(struct image_tool_params *params,
124 void *fdt, const char *name, const char *fname)
125 {
126 struct stat sbuf;
127 void *ptr;
128 int ret;
129 int fd;
130
131 fd = open(fname, O_RDWR | O_BINARY);
132 if (fd < 0) {
133 fprintf(stderr, "%s: Can't open %s: %s\n",
134 params->cmdname, fname, strerror(errno));
135 return -1;
136 }
137
138 if (fstat(fd, &sbuf) < 0) {
139 fprintf(stderr, "%s: Can't stat %s: %s\n",
140 params->cmdname, fname, strerror(errno));
141 goto err;
142 }
143
144 ret = fdt_property_placeholder(fdt, "data", sbuf.st_size, &ptr);
145 if (ret)
146 goto err;
147 ret = read(fd, ptr, sbuf.st_size);
148 if (ret != sbuf.st_size) {
149 fprintf(stderr, "%s: Can't read %s: %s\n",
150 params->cmdname, fname, strerror(errno));
151 goto err;
152 }
153 close(fd);
154
155 return 0;
156 err:
157 close(fd);
158 return -1;
159 }
160
fdt_property_strf(void * fdt,const char * name,const char * fmt,...)161 static int fdt_property_strf(void *fdt, const char *name, const char *fmt, ...)
162 {
163 char str[100];
164 va_list ptr;
165
166 va_start(ptr, fmt);
167 vsnprintf(str, sizeof(str), fmt, ptr);
168 va_end(ptr);
169 return fdt_property_string(fdt, name, str);
170 }
171
get_basename(char * str,int size,const char * fname)172 static void get_basename(char *str, int size, const char *fname)
173 {
174 const char *p, *start, *end;
175 int len;
176
177 /*
178 * Use the base name as the 'name' field. So for example:
179 *
180 * "arch/arm/dts/sun7i-a20-bananapro.dtb"
181 * becomes "sun7i-a20-bananapro"
182 */
183 p = strrchr(fname, '/');
184 start = p ? p + 1 : fname;
185 p = strrchr(fname, '.');
186 end = p ? p : fname + strlen(fname);
187 len = end - start;
188 if (len >= size)
189 len = size - 1;
190 memcpy(str, start, len);
191 str[len] = '\0';
192 }
193
194 /**
195 * fit_write_images() - Write out a list of images to the FIT
196 *
197 * We always include the main image (params->datafile). If there are device
198 * tree files, we include an fdt- node for each of those too.
199 */
fit_write_images(struct image_tool_params * params,char * fdt)200 static int fit_write_images(struct image_tool_params *params, char *fdt)
201 {
202 struct content_info *cont;
203 const char *typename;
204 char str[100];
205 int upto;
206 int ret;
207
208 fdt_begin_node(fdt, "images");
209
210 /* First the main image */
211 typename = genimg_get_type_short_name(params->fit_image_type);
212 snprintf(str, sizeof(str), "%s-1", typename);
213 fdt_begin_node(fdt, str);
214 fdt_property_string(fdt, FIT_DESC_PROP, params->imagename);
215 fdt_property_string(fdt, FIT_TYPE_PROP, typename);
216 fdt_property_string(fdt, FIT_ARCH_PROP,
217 genimg_get_arch_short_name(params->arch));
218 fdt_property_string(fdt, FIT_OS_PROP,
219 genimg_get_os_short_name(params->os));
220 fdt_property_string(fdt, FIT_COMP_PROP,
221 genimg_get_comp_short_name(params->comp));
222 fdt_property_u32(fdt, FIT_LOAD_PROP, params->addr);
223 fdt_property_u32(fdt, FIT_ENTRY_PROP, params->ep);
224
225 /*
226 * Put data last since it is large. SPL may only load the first part
227 * of the DT, so this way it can access all the above fields.
228 */
229 ret = fdt_property_file(params, fdt, FIT_DATA_PROP, params->datafile);
230 if (ret)
231 return ret;
232 fdt_end_node(fdt);
233
234 /* Now the device tree files if available */
235 upto = 0;
236 for (cont = params->content_head; cont; cont = cont->next) {
237 if (cont->type != IH_TYPE_FLATDT)
238 continue;
239 typename = genimg_get_type_short_name(cont->type);
240 snprintf(str, sizeof(str), "%s-%d", FIT_FDT_PROP, ++upto);
241 fdt_begin_node(fdt, str);
242
243 get_basename(str, sizeof(str), cont->fname);
244 fdt_property_string(fdt, FIT_DESC_PROP, str);
245 ret = fdt_property_file(params, fdt, FIT_DATA_PROP,
246 cont->fname);
247 if (ret)
248 return ret;
249 fdt_property_string(fdt, FIT_TYPE_PROP, typename);
250 fdt_property_string(fdt, FIT_ARCH_PROP,
251 genimg_get_arch_short_name(params->arch));
252 fdt_property_string(fdt, FIT_COMP_PROP,
253 genimg_get_comp_short_name(IH_COMP_NONE));
254 fdt_end_node(fdt);
255 }
256
257 /* And a ramdisk file if available */
258 if (params->fit_ramdisk) {
259 fdt_begin_node(fdt, FIT_RAMDISK_PROP "-1");
260
261 fdt_property_string(fdt, FIT_TYPE_PROP, FIT_RAMDISK_PROP);
262 fdt_property_string(fdt, FIT_OS_PROP,
263 genimg_get_os_short_name(params->os));
264 fdt_property_string(fdt, FIT_ARCH_PROP,
265 genimg_get_arch_short_name(params->arch));
266
267 ret = fdt_property_file(params, fdt, FIT_DATA_PROP,
268 params->fit_ramdisk);
269 if (ret)
270 return ret;
271
272 fdt_end_node(fdt);
273 }
274
275 fdt_end_node(fdt);
276
277 return 0;
278 }
279
280 /**
281 * fit_write_configs() - Write out a list of configurations to the FIT
282 *
283 * If there are device tree files, we include a configuration for each, which
284 * selects the main image (params->datafile) and its corresponding device
285 * tree file.
286 *
287 * Otherwise we just create a configuration with the main image in it.
288 */
fit_write_configs(struct image_tool_params * params,char * fdt)289 static void fit_write_configs(struct image_tool_params *params, char *fdt)
290 {
291 struct content_info *cont;
292 const char *typename;
293 char str[100];
294 int upto;
295
296 fdt_begin_node(fdt, "configurations");
297 fdt_property_string(fdt, FIT_DEFAULT_PROP, "conf-1");
298
299 upto = 0;
300 for (cont = params->content_head; cont; cont = cont->next) {
301 if (cont->type != IH_TYPE_FLATDT)
302 continue;
303 typename = genimg_get_type_short_name(cont->type);
304 snprintf(str, sizeof(str), "conf-%d", ++upto);
305 fdt_begin_node(fdt, str);
306
307 get_basename(str, sizeof(str), cont->fname);
308 fdt_property_string(fdt, FIT_DESC_PROP, str);
309
310 typename = genimg_get_type_short_name(params->fit_image_type);
311 snprintf(str, sizeof(str), "%s-1", typename);
312 fdt_property_string(fdt, typename, str);
313 fdt_property_string(fdt, FIT_LOADABLE_PROP, str);
314
315 if (params->fit_ramdisk)
316 fdt_property_string(fdt, FIT_RAMDISK_PROP,
317 FIT_RAMDISK_PROP "-1");
318
319 snprintf(str, sizeof(str), FIT_FDT_PROP "-%d", upto);
320 fdt_property_string(fdt, FIT_FDT_PROP, str);
321 fdt_end_node(fdt);
322 }
323
324 if (!upto) {
325 fdt_begin_node(fdt, "conf-1");
326 typename = genimg_get_type_short_name(params->fit_image_type);
327 snprintf(str, sizeof(str), "%s-1", typename);
328 fdt_property_string(fdt, typename, str);
329
330 if (params->fit_ramdisk)
331 fdt_property_string(fdt, FIT_RAMDISK_PROP,
332 FIT_RAMDISK_PROP "-1");
333
334 fdt_end_node(fdt);
335 }
336
337 fdt_end_node(fdt);
338 }
339
fit_build_fdt(struct image_tool_params * params,char * fdt,int size)340 static int fit_build_fdt(struct image_tool_params *params, char *fdt, int size)
341 {
342 int ret;
343
344 ret = fdt_create(fdt, size);
345 if (ret)
346 return ret;
347 fdt_finish_reservemap(fdt);
348 fdt_begin_node(fdt, "");
349 fdt_property_strf(fdt, FIT_DESC_PROP,
350 "%s image with one or more FDT blobs",
351 genimg_get_type_name(params->fit_image_type));
352 fdt_property_strf(fdt, "creator", "U-Boot mkimage %s", PLAIN_VERSION);
353 fdt_property_u32(fdt, "#address-cells", 1);
354 ret = fit_write_images(params, fdt);
355 if (ret)
356 return ret;
357 fit_write_configs(params, fdt);
358 fdt_end_node(fdt);
359 ret = fdt_finish(fdt);
360 if (ret)
361 return ret;
362
363 return fdt_totalsize(fdt);
364 }
365
fit_build(struct image_tool_params * params,const char * fname)366 static int fit_build(struct image_tool_params *params, const char *fname)
367 {
368 char *buf;
369 int size;
370 int ret;
371 int fd;
372
373 size = fit_calc_size(params);
374 if (size < 0)
375 return -1;
376 buf = malloc(size);
377 if (!buf) {
378 fprintf(stderr, "%s: Out of memory (%d bytes)\n",
379 params->cmdname, size);
380 return -1;
381 }
382 ret = fit_build_fdt(params, buf, size);
383 if (ret < 0) {
384 fprintf(stderr, "%s: Failed to build FIT image\n",
385 params->cmdname);
386 goto err_buf;
387 }
388 size = ret;
389 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
390 if (fd < 0) {
391 fprintf(stderr, "%s: Can't open %s: %s\n",
392 params->cmdname, fname, strerror(errno));
393 goto err_buf;
394 }
395 ret = write(fd, buf, size);
396 if (ret != size) {
397 fprintf(stderr, "%s: Can't write %s: %s\n",
398 params->cmdname, fname, strerror(errno));
399 goto err;
400 }
401 close(fd);
402 free(buf);
403
404 return 0;
405 err:
406 close(fd);
407 err_buf:
408 free(buf);
409 return -1;
410 }
411
412 /**
413 * fit_extract_data() - Move all data outside the FIT
414 *
415 * This takes a normal FIT file and removes all the 'data' properties from it.
416 * The data is placed in an area after the FIT so that it can be accessed
417 * using an offset into that area. The 'data' properties turn into
418 * 'data-offset' properties.
419 *
420 * This function cannot cope with FITs with 'data-offset' properties. All
421 * data must be in 'data' properties on entry.
422 */
fit_extract_data(struct image_tool_params * params,const char * fname)423 static int fit_extract_data(struct image_tool_params *params, const char *fname)
424 {
425 void *buf;
426 int buf_ptr;
427 int fit_size, new_size;
428 int fd;
429 struct stat sbuf;
430 void *fdt;
431 int ret;
432 int images;
433 int node;
434
435 fd = mmap_fdt(params->cmdname, fname, 0, &fdt, &sbuf, false, false);
436 if (fd < 0)
437 return -EIO;
438 fit_size = fdt_totalsize(fdt);
439
440 /* Allocate space to hold the image data we will extract */
441 buf = malloc(fit_size);
442 if (!buf) {
443 ret = -ENOMEM;
444 goto err_munmap;
445 }
446 buf_ptr = 0;
447
448 images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
449 if (images < 0) {
450 debug("%s: Cannot find /images node: %d\n", __func__, images);
451 ret = -EINVAL;
452 goto err_munmap;
453 }
454
455 for (node = fdt_first_subnode(fdt, images);
456 node >= 0;
457 node = fdt_next_subnode(fdt, node)) {
458 const char *data;
459 int len;
460
461 data = fdt_getprop(fdt, node, FIT_DATA_PROP, &len);
462 if (!data)
463 continue;
464 memcpy(buf + buf_ptr, data, len);
465 debug("Extracting data size %x\n", len);
466
467 ret = fdt_delprop(fdt, node, FIT_DATA_PROP);
468 if (ret) {
469 ret = -EPERM;
470 goto err_munmap;
471 }
472 if (params->external_offset > 0) {
473 /* An external offset positions the data absolutely. */
474 fdt_setprop_u32(fdt, node, FIT_DATA_POSITION_PROP,
475 params->external_offset + buf_ptr);
476 } else {
477 fdt_setprop_u32(fdt, node, FIT_DATA_OFFSET_PROP,
478 buf_ptr);
479 }
480 fdt_setprop_u32(fdt, node, FIT_DATA_SIZE_PROP, len);
481
482 buf_ptr += (len + 3) & ~3;
483 }
484
485 /* Pack the FDT and place the data after it */
486 fdt_pack(fdt);
487
488 debug("Size reduced from %x to %x\n", fit_size, fdt_totalsize(fdt));
489 debug("External data size %x\n", buf_ptr);
490 new_size = fdt_totalsize(fdt);
491 new_size = (new_size + 3) & ~3;
492 munmap(fdt, sbuf.st_size);
493
494 if (ftruncate(fd, new_size)) {
495 debug("%s: Failed to truncate file: %s\n", __func__,
496 strerror(errno));
497 ret = -EIO;
498 goto err;
499 }
500
501 /* Check if an offset for the external data was set. */
502 if (params->external_offset > 0) {
503 if (params->external_offset < new_size) {
504 debug("External offset %x overlaps FIT length %x",
505 params->external_offset, new_size);
506 ret = -EINVAL;
507 goto err;
508 }
509 new_size = params->external_offset;
510 }
511 if (lseek(fd, new_size, SEEK_SET) < 0) {
512 debug("%s: Failed to seek to end of file: %s\n", __func__,
513 strerror(errno));
514 ret = -EIO;
515 goto err;
516 }
517 if (write(fd, buf, buf_ptr) != buf_ptr) {
518 debug("%s: Failed to write external data to file %s\n",
519 __func__, strerror(errno));
520 ret = -EIO;
521 goto err;
522 }
523 free(buf);
524 close(fd);
525 return 0;
526
527 err_munmap:
528 munmap(fdt, sbuf.st_size);
529 err:
530 if (buf)
531 free(buf);
532 close(fd);
533 return ret;
534 }
535
fit_import_data(struct image_tool_params * params,const char * fname)536 static int fit_import_data(struct image_tool_params *params, const char *fname)
537 {
538 void *fdt, *old_fdt;
539 int fit_size, new_size, size, data_base;
540 int fd;
541 struct stat sbuf;
542 int ret;
543 int images;
544 int node;
545
546 fd = mmap_fdt(params->cmdname, fname, 0, &old_fdt, &sbuf, false, false);
547 if (fd < 0)
548 return -EIO;
549 fit_size = fdt_totalsize(old_fdt);
550 data_base = (fit_size + 3) & ~3;
551
552 /* Allocate space to hold the new FIT */
553 size = sbuf.st_size + 16384;
554 fdt = malloc(size);
555 if (!fdt) {
556 fprintf(stderr, "%s: Failed to allocate memory (%d bytes)\n",
557 __func__, size);
558 ret = -ENOMEM;
559 goto err_has_fd;
560 }
561 ret = fdt_open_into(old_fdt, fdt, size);
562 if (ret) {
563 debug("%s: Failed to expand FIT: %s\n", __func__,
564 fdt_strerror(errno));
565 ret = -EINVAL;
566 goto err_has_fd;
567 }
568
569 images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
570 if (images < 0) {
571 debug("%s: Cannot find /images node: %d\n", __func__, images);
572 ret = -EINVAL;
573 goto err_has_fd;
574 }
575
576 for (node = fdt_first_subnode(fdt, images);
577 node >= 0;
578 node = fdt_next_subnode(fdt, node)) {
579 int buf_ptr;
580 int len;
581
582 buf_ptr = fdtdec_get_int(fdt, node, "data-offset", -1);
583 len = fdtdec_get_int(fdt, node, "data-size", -1);
584 if (buf_ptr == -1 || len == -1)
585 continue;
586 debug("Importing data size %x\n", len);
587
588 ret = fdt_setprop(fdt, node, "data", fdt + data_base + buf_ptr,
589 len);
590 if (ret) {
591 debug("%s: Failed to write property: %s\n", __func__,
592 fdt_strerror(ret));
593 ret = -EINVAL;
594 goto err_has_fd;
595 }
596 }
597
598 /* Close the old fd so we can re-use it. */
599 close(fd);
600
601 /* Pack the FDT and place the data after it */
602 fdt_pack(fdt);
603
604 new_size = fdt_totalsize(fdt);
605 debug("Size expanded from %x to %x\n", fit_size, new_size);
606
607 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
608 if (fd < 0) {
609 fprintf(stderr, "%s: Can't open %s: %s\n",
610 params->cmdname, fname, strerror(errno));
611 ret = -EIO;
612 goto err_no_fd;
613 }
614 if (write(fd, fdt, new_size) != new_size) {
615 debug("%s: Failed to write external data to file %s\n",
616 __func__, strerror(errno));
617 ret = -EIO;
618 goto err_has_fd;
619 }
620
621 ret = 0;
622
623 err_has_fd:
624 close(fd);
625 err_no_fd:
626 munmap(old_fdt, sbuf.st_size);
627 free(fdt);
628 return ret;
629 }
630
copyfile(const char * src,const char * dst)631 static int copyfile(const char *src, const char *dst)
632 {
633 int fd_src = -1, fd_dst = -1;
634 void *buf = NULL;
635 ssize_t size;
636 size_t count;
637 int ret = -1;
638
639 fd_src = open(src, O_RDONLY);
640 if (fd_src < 0) {
641 printf("Can't open file %s (%s)\n", src, strerror(errno));
642 goto out;
643 }
644
645 fd_dst = open(dst, O_WRONLY | O_CREAT, 0700);
646 if (fd_dst < 0) {
647 printf("Can't open file %s (%s)\n", dst, strerror(errno));
648 goto out;
649 }
650
651 buf = malloc(512);
652 if (!buf) {
653 printf("Can't allocate buffer to copy file\n");
654 goto out;
655 }
656
657 while (1) {
658 size = read(fd_src, buf, 512);
659 if (size < 0) {
660 printf("Can't read file %s\n", src);
661 goto out;
662 }
663 if (!size)
664 break;
665
666 count = size;
667 size = write(fd_dst, buf, count);
668 if (size < 0) {
669 printf("Can't write file %s\n", dst);
670 goto out;
671 }
672 }
673
674 ret = 0;
675
676 out:
677 if (fd_src >= 0)
678 close(fd_src);
679 if (fd_dst >= 0)
680 close(fd_dst);
681 if (buf)
682 free(buf);
683
684 return ret;
685 }
686
687 /**
688 * fit_handle_file - main FIT file processing function
689 *
690 * fit_handle_file() runs dtc to convert .its to .itb, includes
691 * binary data, updates timestamp property and calculates hashes.
692 *
693 * datafile - .its file
694 * imagefile - .itb file
695 *
696 * returns:
697 * only on success, otherwise calls exit (EXIT_FAILURE);
698 */
fit_handle_file(struct image_tool_params * params)699 static int fit_handle_file(struct image_tool_params *params)
700 {
701 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
702 char bakfile[MKIMAGE_MAX_TMPFILE_LEN + 4] = {0};
703 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
704 size_t size_inc;
705 int ret;
706
707 /* Flattened Image Tree (FIT) format handling */
708 debug ("FIT format handling\n");
709
710 /* call dtc to include binary properties into the tmp file */
711 if (strlen (params->imagefile) +
712 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
713 fprintf (stderr, "%s: Image file name (%s) too long, "
714 "can't create tmpfile",
715 params->imagefile, params->cmdname);
716 return (EXIT_FAILURE);
717 }
718 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
719
720 /* We either compile the source file, or use the existing FIT image */
721 if (params->auto_its) {
722 if (fit_build(params, tmpfile)) {
723 fprintf(stderr, "%s: failed to build FIT\n",
724 params->cmdname);
725 return EXIT_FAILURE;
726 }
727 *cmd = '\0';
728 } else if (params->datafile) {
729 /* dtc -I dts -O dtb -p 500 -o tmpfile datafile */
730 snprintf(cmd, sizeof(cmd), "%s %s -o \"%s\" \"%s\"",
731 MKIMAGE_DTC, params->dtc, tmpfile, params->datafile);
732 debug("Trying to execute \"%s\"\n", cmd);
733 } else {
734 snprintf(cmd, sizeof(cmd), "cp \"%s\" \"%s\"",
735 params->imagefile, tmpfile);
736 }
737
738 if (*cmd && system(cmd) == -1) {
739 fprintf (stderr, "%s: system(%s) failed: %s\n",
740 params->cmdname, cmd, strerror(errno));
741 goto err_system;
742 }
743
744 /* Move the data so it is internal to the FIT, if needed */
745 ret = fit_import_data(params, tmpfile);
746 if (ret)
747 goto err_system;
748
749 /*
750 * Copy the tmpfile to bakfile, then in the following loop
751 * we copy bakfile to tmpfile. So we always start from the
752 * beginning.
753 */
754 sprintf(bakfile, "%s%s", tmpfile, ".bak");
755 rename(tmpfile, bakfile);
756
757 /*
758 * Set hashes for images in the blob. Unfortunately we may need more
759 * space in either FDT, so keep trying until we succeed.
760 *
761 * Note: this is pretty inefficient for signing, since we must
762 * calculate the signature every time. It would be better to calculate
763 * all the data and then store it in a separate step. However, this
764 * would be considerably more complex to implement. Generally a few
765 * steps of this loop is enough to sign with several keys.
766 */
767 for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) {
768 if (copyfile(bakfile, tmpfile) < 0) {
769 printf("Can't copy %s to %s\n", bakfile, tmpfile);
770 ret = -EIO;
771 break;
772 }
773 ret = fit_add_file_data(params, size_inc, tmpfile);
774 if (!ret || ret != -ENOSPC)
775 break;
776 }
777
778 if (ret) {
779 fprintf(stderr, "%s Can't add hashes to FIT blob: %d\n",
780 params->cmdname, ret);
781 goto err_system;
782 }
783
784 /* Move the data so it is external to the FIT, if requested */
785 if (params->external_data) {
786 ret = fit_extract_data(params, tmpfile);
787 if (ret)
788 goto err_system;
789 }
790
791 if (rename (tmpfile, params->imagefile) == -1) {
792 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
793 params->cmdname, tmpfile, params->imagefile,
794 strerror (errno));
795 unlink (tmpfile);
796 unlink(bakfile);
797 unlink (params->imagefile);
798 return EXIT_FAILURE;
799 }
800 unlink(bakfile);
801 return EXIT_SUCCESS;
802
803 err_system:
804 unlink(tmpfile);
805 unlink(bakfile);
806 return -1;
807 }
808
809 /**
810 * fit_image_extract - extract a FIT component image
811 * @fit: pointer to the FIT format image header
812 * @image_noffset: offset of the component image node
813 * @file_name: name of the file to store the FIT sub-image
814 *
815 * returns:
816 * zero in case of success or a negative value if fail.
817 */
fit_image_extract(const void * fit,int image_noffset,const char * file_name)818 static int fit_image_extract(
819 const void *fit,
820 int image_noffset,
821 const char *file_name)
822 {
823 const void *file_data;
824 size_t file_size = 0;
825
826 /* get the "data" property of component at offset "image_noffset" */
827 fit_image_get_data(fit, image_noffset, &file_data, &file_size);
828
829 /* save the "file_data" into the file specified by "file_name" */
830 return imagetool_save_subimage(file_name, (ulong) file_data, file_size);
831 }
832
833 /**
834 * fit_extract_contents - retrieve a sub-image component from the FIT image
835 * @ptr: pointer to the FIT format image header
836 * @params: command line parameters
837 *
838 * returns:
839 * zero in case of success or a negative value if fail.
840 */
fit_extract_contents(void * ptr,struct image_tool_params * params)841 static int fit_extract_contents(void *ptr, struct image_tool_params *params)
842 {
843 int images_noffset;
844 int noffset;
845 int ndepth;
846 const void *fit = ptr;
847 int count = 0;
848 const char *p;
849
850 /* Indent string is defined in header image.h */
851 p = IMAGE_INDENT_STRING;
852
853 if (fit_check_format(fit, IMAGE_SIZE_INVAL)) {
854 printf("Bad FIT image format\n");
855 return -1;
856 }
857
858 /* Find images parent node offset */
859 images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
860 if (images_noffset < 0) {
861 printf("Can't find images parent node '%s' (%s)\n",
862 FIT_IMAGES_PATH, fdt_strerror(images_noffset));
863 return -1;
864 }
865
866 /* Avoid any overrun */
867 count = fit_get_subimage_count(fit, images_noffset);
868 if ((params->pflag < 0) || (count <= params->pflag)) {
869 printf("No such component at '%d'\n", params->pflag);
870 return -1;
871 }
872
873 /* Process its subnodes, extract the desired component from image */
874 for (ndepth = 0, count = 0,
875 noffset = fdt_next_node(fit, images_noffset, &ndepth);
876 (noffset >= 0) && (ndepth > 0);
877 noffset = fdt_next_node(fit, noffset, &ndepth)) {
878 if (ndepth == 1) {
879 /*
880 * Direct child node of the images parent node,
881 * i.e. component image node.
882 */
883 if (params->pflag == count) {
884 printf("Extracted:\n%s Image %u (%s)\n", p,
885 count, fit_get_name(fit, noffset, NULL));
886
887 fit_image_print(fit, noffset, p);
888
889 return fit_image_extract(fit, noffset,
890 params->outfile);
891 }
892
893 count++;
894 }
895 }
896
897 return 0;
898 }
899
fit_check_params(struct image_tool_params * params)900 static int fit_check_params(struct image_tool_params *params)
901 {
902 if (params->auto_its)
903 return 0;
904 return ((params->dflag && (params->fflag || params->lflag)) ||
905 (params->fflag && (params->dflag || params->lflag)) ||
906 (params->lflag && (params->dflag || params->fflag)));
907 }
908
909 U_BOOT_IMAGE_TYPE(
910 fitimage,
911 "FIT Image support",
912 sizeof(image_header_t),
913 (void *)&header,
914 fit_check_params,
915 fit_verify_header,
916 fit_print_contents,
917 NULL,
918 fit_extract_contents,
919 fit_check_image_types,
920 fit_handle_file,
921 NULL /* FIT images use DTB header */
922 );
923