1 /*
2 * (C) Copyright 2008 Semihalf
3 *
4 * (C) Copyright 2000-2004
5 * DENX Software Engineering
6 * Wolfgang Denk, wd@denx.de
7 *
8 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
9 * FIT image specific code abstracted from mkimage.c
10 * some functions added to address abstraction
11 *
12 * All rights reserved.
13 *
14 * SPDX-License-Identifier: GPL-2.0+
15 */
16
17 #include "imagetool.h"
18 #include "fit_common.h"
19 #include "mkimage.h"
20 #include <image.h>
21 #include <stdarg.h>
22 #include <version.h>
23 #include <u-boot/crc.h>
24
25 static image_header_t header;
26
27 #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
28
29 /* Resize the fdt to its actual size + a bit of padding */
fdt_shrink_to_minimum(void * blob,uint extrasize)30 static int fdt_shrink_to_minimum(void *blob, uint extrasize)
31 {
32 uint64_t addr, size;
33 uint actualsize;
34 int total, ret;
35 int i;
36
37 if (!blob)
38 return 0;
39
40 total = fdt_num_mem_rsv(blob);
41 for (i = 0; i < total; i++) {
42 fdt_get_mem_rsv(blob, i, &addr, &size);
43 if (addr == (uintptr_t)blob) {
44 fdt_del_mem_rsv(blob, i);
45 break;
46 }
47 }
48
49 /*
50 * Calculate the actual size of the fdt
51 * plus the size needed for 5 fdt_add_mem_rsv, one
52 * for the fdt itself and 4 for a possible initrd
53 * ((initrd-start + initrd-end) * 2 (name & value))
54 */
55 actualsize = fdt_off_dt_strings(blob) +
56 fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry);
57
58 actualsize += extrasize;
59 actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x200);
60 actualsize = actualsize - ((uintptr_t)blob & 0xfff);
61
62 /* Change the fdt header to reflect the correct size */
63 fdt_set_totalsize(blob, actualsize);
64
65 /* Add the new reservation */
66 ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize);
67 if (ret < 0)
68 return ret;
69
70 return actualsize;
71 }
72
fit_add_file_data(struct image_tool_params * params,size_t size_inc,const char * tmpfile)73 static int fit_add_file_data(struct image_tool_params *params, size_t size_inc,
74 const char *tmpfile)
75 {
76 int tfd, destfd = 0;
77 void *dest_blob = NULL;
78 off_t destfd_size = 0;
79 struct stat sbuf;
80 void *ptr;
81 int ret = 0;
82
83 tfd = mmap_fdt(params->cmdname, tmpfile, size_inc, &ptr, &sbuf, true);
84 if (tfd < 0)
85 return -EIO;
86
87 if (params->keydest) {
88 struct stat dest_sbuf;
89
90 destfd = mmap_fdt(params->cmdname, params->keydest, size_inc,
91 &dest_blob, &dest_sbuf, false);
92 if (destfd < 0) {
93 ret = -EIO;
94 goto err_keydest;
95 }
96 destfd_size = dest_sbuf.st_size;
97 }
98
99 /* for first image creation, add a timestamp at offset 0 i.e., root */
100 if (params->datafile) {
101 time_t time = imagetool_get_source_date(params, sbuf.st_mtime);
102 ret = fit_set_timestamp(ptr, 0, time);
103 ret |= fit_set_totalsize(ptr, 0, sbuf.st_size);
104 if (params->vflag > 0)
105 ret |= fit_set_version(ptr, 0, params->vflag);
106 else
107 ret |= fit_set_version(ptr, 0, 0);
108 }
109
110 if (!ret) {
111 ret = fit_add_verification_data(params->keydir, dest_blob, ptr,
112 params->comment,
113 params->require_keys,
114 params->engine_id);
115 }
116
117 /* Remove external data size from fdt totalsize */
118 if (params->external_offset) {
119 fdt_shrink_to_minimum(ptr, 0);
120 if (params->external_offset < fdt_totalsize(ptr)) {
121 ret = -EINVAL;
122 printf("Failed: external offset 0x%x overlaps FIT length 0x%x\n",
123 params->external_offset, fdt_totalsize(ptr));
124 }
125 }
126
127 if (dest_blob) {
128 munmap(dest_blob, destfd_size);
129 close(destfd);
130 }
131
132 err_keydest:
133 munmap(ptr, sbuf.st_size);
134 close(tfd);
135
136 return ret;
137 }
138
139 /**
140 * fit_calc_size() - Calculate the approximate size of the FIT we will generate
141 */
fit_calc_size(struct image_tool_params * params)142 static int fit_calc_size(struct image_tool_params *params)
143 {
144 struct content_info *cont;
145 int size, total_size;
146
147 size = imagetool_get_filesize(params, params->datafile);
148 if (size < 0)
149 return -1;
150 total_size = size;
151
152 if (params->fit_ramdisk) {
153 size = imagetool_get_filesize(params, params->fit_ramdisk);
154 if (size < 0)
155 return -1;
156 total_size += size;
157 }
158
159 for (cont = params->content_head; cont; cont = cont->next) {
160 size = imagetool_get_filesize(params, cont->fname);
161 if (size < 0)
162 return -1;
163
164 /* Add space for properties */
165 total_size += size + 300;
166 }
167
168 /* Add plenty of space for headers, properties, nodes, etc. */
169 total_size += 4096;
170
171 return total_size;
172 }
173
fdt_property_file(struct image_tool_params * params,void * fdt,const char * name,const char * fname)174 static int fdt_property_file(struct image_tool_params *params,
175 void *fdt, const char *name, const char *fname)
176 {
177 struct stat sbuf;
178 void *ptr;
179 int ret;
180 int fd;
181
182 fd = open(fname, O_RDWR | O_BINARY);
183 if (fd < 0) {
184 fprintf(stderr, "%s: Can't open %s: %s\n",
185 params->cmdname, fname, strerror(errno));
186 return -1;
187 }
188
189 if (fstat(fd, &sbuf) < 0) {
190 fprintf(stderr, "%s: Can't stat %s: %s\n",
191 params->cmdname, fname, strerror(errno));
192 goto err;
193 }
194
195 ret = fdt_property_placeholder(fdt, "data", sbuf.st_size, &ptr);
196 if (ret)
197 goto err;
198 ret = read(fd, ptr, sbuf.st_size);
199 if (ret != sbuf.st_size) {
200 fprintf(stderr, "%s: Can't read %s: %s\n",
201 params->cmdname, fname, strerror(errno));
202 goto err;
203 }
204 close(fd);
205
206 return 0;
207 err:
208 close(fd);
209 return -1;
210 }
211
fdt_property_strf(void * fdt,const char * name,const char * fmt,...)212 static int fdt_property_strf(void *fdt, const char *name, const char *fmt, ...)
213 {
214 char str[100];
215 va_list ptr;
216
217 va_start(ptr, fmt);
218 vsnprintf(str, sizeof(str), fmt, ptr);
219 va_end(ptr);
220 return fdt_property_string(fdt, name, str);
221 }
222
get_basename(char * str,int size,const char * fname)223 static void get_basename(char *str, int size, const char *fname)
224 {
225 const char *p, *start, *end;
226 int len;
227
228 /*
229 * Use the base name as the 'name' field. So for example:
230 *
231 * "arch/arm/dts/sun7i-a20-bananapro.dtb"
232 * becomes "sun7i-a20-bananapro"
233 */
234 p = strrchr(fname, '/');
235 start = p ? p + 1 : fname;
236 p = strrchr(fname, '.');
237 end = p ? p : fname + strlen(fname);
238 len = end - start;
239 if (len >= size)
240 len = size - 1;
241 memcpy(str, start, len);
242 str[len] = '\0';
243 }
244
245 /**
246 * fit_write_images() - Write out a list of images to the FIT
247 *
248 * We always include the main image (params->datafile). If there are device
249 * tree files, we include an fdt@ node for each of those too.
250 */
fit_write_images(struct image_tool_params * params,char * fdt)251 static int fit_write_images(struct image_tool_params *params, char *fdt)
252 {
253 struct content_info *cont;
254 const char *typename;
255 char str[100];
256 int upto;
257 int ret;
258
259 fdt_begin_node(fdt, "images");
260
261 /* First the main image */
262 typename = genimg_get_type_short_name(params->fit_image_type);
263 snprintf(str, sizeof(str), "%s@1", typename);
264 fdt_begin_node(fdt, str);
265 fdt_property_string(fdt, "description", params->imagename);
266 fdt_property_string(fdt, "type", typename);
267 fdt_property_string(fdt, "arch",
268 genimg_get_arch_short_name(params->arch));
269 fdt_property_string(fdt, "os", genimg_get_os_short_name(params->os));
270 fdt_property_string(fdt, "compression",
271 genimg_get_comp_short_name(params->comp));
272 fdt_property_u32(fdt, "load", params->addr);
273 fdt_property_u32(fdt, "entry", params->ep);
274
275 /*
276 * Put data last since it is large. SPL may only load the first part
277 * of the DT, so this way it can access all the above fields.
278 */
279 ret = fdt_property_file(params, fdt, "data", params->datafile);
280 if (ret)
281 return ret;
282 fdt_end_node(fdt);
283
284 /* Now the device tree files if available */
285 upto = 0;
286 for (cont = params->content_head; cont; cont = cont->next) {
287 if (cont->type != IH_TYPE_FLATDT)
288 continue;
289 snprintf(str, sizeof(str), "%s@%d", FIT_FDT_PROP, ++upto);
290 fdt_begin_node(fdt, str);
291
292 get_basename(str, sizeof(str), cont->fname);
293 fdt_property_string(fdt, "description", str);
294 ret = fdt_property_file(params, fdt, "data", cont->fname);
295 if (ret)
296 return ret;
297 fdt_property_string(fdt, "type", typename);
298 fdt_property_string(fdt, "arch",
299 genimg_get_arch_short_name(params->arch));
300 fdt_property_string(fdt, "compression",
301 genimg_get_comp_short_name(IH_COMP_NONE));
302 fdt_end_node(fdt);
303 }
304
305 /* And a ramdisk file if available */
306 if (params->fit_ramdisk) {
307 fdt_begin_node(fdt, FIT_RAMDISK_PROP "@1");
308
309 fdt_property_string(fdt, "type", FIT_RAMDISK_PROP);
310 fdt_property_string(fdt, "os", genimg_get_os_short_name(params->os));
311
312 ret = fdt_property_file(params, fdt, "data", params->fit_ramdisk);
313 if (ret)
314 return ret;
315
316 fdt_end_node(fdt);
317 }
318
319 fdt_end_node(fdt);
320
321 return 0;
322 }
323
324 /**
325 * fit_write_configs() - Write out a list of configurations to the FIT
326 *
327 * If there are device tree files, we include a configuration for each, which
328 * selects the main image (params->datafile) and its corresponding device
329 * tree file.
330 *
331 * Otherwise we just create a configuration with the main image in it.
332 */
fit_write_configs(struct image_tool_params * params,char * fdt)333 static void fit_write_configs(struct image_tool_params *params, char *fdt)
334 {
335 struct content_info *cont;
336 const char *typename;
337 char str[100];
338 int upto;
339
340 fdt_begin_node(fdt, "configurations");
341 fdt_property_string(fdt, "default", "conf@1");
342
343 upto = 0;
344 for (cont = params->content_head; cont; cont = cont->next) {
345 if (cont->type != IH_TYPE_FLATDT)
346 continue;
347 typename = genimg_get_type_short_name(cont->type);
348 snprintf(str, sizeof(str), "conf@%d", ++upto);
349 fdt_begin_node(fdt, str);
350
351 get_basename(str, sizeof(str), cont->fname);
352 fdt_property_string(fdt, "description", str);
353
354 typename = genimg_get_type_short_name(params->fit_image_type);
355 snprintf(str, sizeof(str), "%s@1", typename);
356 fdt_property_string(fdt, typename, str);
357
358 if (params->fit_ramdisk)
359 fdt_property_string(fdt, FIT_RAMDISK_PROP,
360 FIT_RAMDISK_PROP "@1");
361
362 snprintf(str, sizeof(str), FIT_FDT_PROP "@%d", upto);
363 fdt_property_string(fdt, FIT_FDT_PROP, str);
364 fdt_end_node(fdt);
365 }
366
367 if (!upto) {
368 fdt_begin_node(fdt, "conf@1");
369 typename = genimg_get_type_short_name(params->fit_image_type);
370 snprintf(str, sizeof(str), "%s@1", typename);
371 fdt_property_string(fdt, typename, str);
372
373 if (params->fit_ramdisk)
374 fdt_property_string(fdt, FIT_RAMDISK_PROP,
375 FIT_RAMDISK_PROP "@1");
376
377 fdt_end_node(fdt);
378 }
379
380 fdt_end_node(fdt);
381 }
382
fit_build_fdt(struct image_tool_params * params,char * fdt,int size)383 static int fit_build_fdt(struct image_tool_params *params, char *fdt, int size)
384 {
385 int ret;
386
387 ret = fdt_create(fdt, size);
388 if (ret)
389 return ret;
390 fdt_finish_reservemap(fdt);
391 fdt_begin_node(fdt, "");
392 fdt_property_strf(fdt, "description",
393 "%s image with one or more FDT blobs",
394 genimg_get_type_name(params->fit_image_type));
395 fdt_property_strf(fdt, "creator", "U-Boot mkimage %s", PLAIN_VERSION);
396 fdt_property_u32(fdt, "#address-cells", 1);
397 ret = fit_write_images(params, fdt);
398 if (ret)
399 return ret;
400 fit_write_configs(params, fdt);
401 fdt_end_node(fdt);
402 ret = fdt_finish(fdt);
403 if (ret)
404 return ret;
405
406 return fdt_totalsize(fdt);
407 }
408
fit_build(struct image_tool_params * params,const char * fname)409 static int fit_build(struct image_tool_params *params, const char *fname)
410 {
411 char *buf;
412 int size;
413 int ret;
414 int fd;
415
416 size = fit_calc_size(params);
417 if (size < 0)
418 return -1;
419 buf = malloc(size);
420 if (!buf) {
421 fprintf(stderr, "%s: Out of memory (%d bytes)\n",
422 params->cmdname, size);
423 return -1;
424 }
425 ret = fit_build_fdt(params, buf, size);
426 if (ret < 0) {
427 fprintf(stderr, "%s: Failed to build FIT image\n",
428 params->cmdname);
429 goto err_buf;
430 }
431 size = ret;
432 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
433 if (fd < 0) {
434 fprintf(stderr, "%s: Can't open %s: %s\n",
435 params->cmdname, fname, strerror(errno));
436 goto err_buf;
437 }
438 ret = write(fd, buf, size);
439 if (ret != size) {
440 fprintf(stderr, "%s: Can't write %s: %s\n",
441 params->cmdname, fname, strerror(errno));
442 goto err;
443 }
444 close(fd);
445 free(buf);
446
447 return 0;
448 err:
449 close(fd);
450 err_buf:
451 free(buf);
452 return -1;
453 }
454
455 /**
456 * fit_extract_data() - Move all data outside the FIT
457 *
458 * This takes a normal FIT file and removes all the 'data' properties from it.
459 * The data is placed in an area after the FIT so that it can be accessed
460 * using an offset into that area. The 'data' properties turn into
461 * 'data-offset' properties.
462 *
463 * This function cannot cope with FITs with 'data-offset' properties. All
464 * data must be in 'data' properties on entry.
465 */
fit_extract_data(struct image_tool_params * params,const char * fname)466 static int fit_extract_data(struct image_tool_params *params, const char *fname)
467 {
468 void *buf;
469 int buf_ptr;
470 int fit_size, new_size;
471 int fd;
472 struct stat sbuf;
473 void *fdt;
474 int ret;
475 int images;
476 int node;
477
478 fd = mmap_fdt(params->cmdname, fname, 0x400, &fdt, &sbuf, false);
479 if (fd < 0)
480 return -EIO;
481 fit_size = fdt_totalsize(fdt);
482
483 /* Allocate space to hold the image data we will extract */
484 buf = malloc(fit_size);
485 if (!buf) {
486 ret = -ENOMEM;
487 goto err_munmap;
488 }
489 buf_ptr = 0;
490
491 images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
492 if (images < 0) {
493 debug("%s: Cannot find /images node: %d\n", __func__, images);
494 ret = -EINVAL;
495 goto err_munmap;
496 }
497
498 for (node = fdt_first_subnode(fdt, images);
499 node >= 0;
500 node = fdt_next_subnode(fdt, node)) {
501 const char *data;
502 int len;
503
504 data = fdt_getprop(fdt, node, "data", &len);
505 if (!data)
506 continue;
507 memcpy(buf + buf_ptr, data, len);
508 debug("Extracting data size %x\n", len);
509
510 ret = fdt_delprop(fdt, node, "data");
511 if (ret) {
512 ret = -EPERM;
513 goto err_munmap;
514 }
515 if (params->external_offset > 0) {
516 /* An external offset positions the data absolutely. */
517 fdt_setprop_u32(fdt, node, "data-position",
518 params->external_offset + buf_ptr);
519 } else {
520 fdt_setprop_u32(fdt, node, "data-offset", buf_ptr);
521 }
522 fdt_setprop_u32(fdt, node, "data-size", len);
523
524 buf_ptr += FIT_ALIGN(len);
525 }
526
527 /* Pack the FDT and place the data after it */
528 fdt_pack(fdt);
529
530 debug("Size reduced from %x to %x\n", fit_size, fdt_totalsize(fdt));
531 debug("External data size %x\n", buf_ptr);
532 new_size = fdt_totalsize(fdt);
533 new_size = FIT_ALIGN(new_size);
534 munmap(fdt, sbuf.st_size);
535
536 if (ftruncate(fd, new_size)) {
537 debug("%s: Failed to truncate file: %s\n", __func__,
538 strerror(errno));
539 ret = -EIO;
540 goto err;
541 }
542
543 /* Check if an offset for the external data was set. */
544 if (params->external_offset > 0) {
545 if (params->external_offset < new_size) {
546 printf("Failed: external offset 0x%x overlaps FIT length 0x%x\n",
547 params->external_offset, new_size);
548 ret = -EINVAL;
549 goto err;
550 }
551 new_size = params->external_offset;
552 }
553 if (lseek(fd, new_size, SEEK_SET) < 0) {
554 debug("%s: Failed to seek to end of file: %s\n", __func__,
555 strerror(errno));
556 ret = -EIO;
557 goto err;
558 }
559 if (write(fd, buf, buf_ptr) != buf_ptr) {
560 debug("%s: Failed to write external data to file %s\n",
561 __func__, strerror(errno));
562 ret = -EIO;
563 goto err;
564 }
565 free(buf);
566 close(fd);
567 return 0;
568
569 err_munmap:
570 munmap(fdt, sbuf.st_size);
571 err:
572 if (buf)
573 free(buf);
574 close(fd);
575 return ret;
576 }
577
fit_import_data(struct image_tool_params * params,const char * fname)578 static int fit_import_data(struct image_tool_params *params, const char *fname)
579 {
580 void *fdt, *old_fdt;
581 int fit_size, new_size, size, data_base;
582 int fd;
583 struct stat sbuf;
584 int ret;
585 int images;
586 int node;
587
588 fd = mmap_fdt(params->cmdname, fname, 0, &old_fdt, &sbuf, false);
589 if (fd < 0)
590 return -EIO;
591 fit_size = fdt_totalsize(old_fdt);
592 data_base = FIT_ALIGN(fit_size);
593
594 /* Allocate space to hold the new FIT */
595 size = sbuf.st_size + 16384;
596 fdt = malloc(size);
597 if (!fdt) {
598 fprintf(stderr, "%s: Failed to allocate memory (%d bytes)\n",
599 __func__, size);
600 ret = -ENOMEM;
601 goto err_has_fd;
602 }
603 ret = fdt_open_into(old_fdt, fdt, size);
604 if (ret) {
605 debug("%s: Failed to expand FIT: %s\n", __func__,
606 fdt_strerror(errno));
607 ret = -EINVAL;
608 goto err_has_fd;
609 }
610
611 images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
612 if (images < 0) {
613 debug("%s: Cannot find /images node: %d\n", __func__, images);
614 ret = -EINVAL;
615 goto err_has_fd;
616 }
617
618 for (node = fdt_first_subnode(fdt, images);
619 node >= 0;
620 node = fdt_next_subnode(fdt, node)) {
621 int buf_ptr;
622 int len;
623
624 buf_ptr = fdtdec_get_int(fdt, node, "data-offset", -1);
625 len = fdtdec_get_int(fdt, node, "data-size", -1);
626 if (buf_ptr == -1 || len == -1)
627 continue;
628 debug("Importing data size %x\n", len);
629
630 ret = fdt_setprop(fdt, node, "data", fdt + data_base + buf_ptr,
631 len);
632 if (ret) {
633 debug("%s: Failed to write property: %s\n", __func__,
634 fdt_strerror(ret));
635 ret = -EINVAL;
636 goto err_has_fd;
637 }
638 }
639
640 /* Close the old fd so we can re-use it. */
641 close(fd);
642
643 /* Pack the FDT and place the data after it */
644 fdt_pack(fdt);
645
646 new_size = fdt_totalsize(fdt);
647 debug("Size expanded from %x to %x\n", fit_size, new_size);
648
649 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
650 if (fd < 0) {
651 fprintf(stderr, "%s: Can't open %s: %s\n",
652 params->cmdname, fname, strerror(errno));
653 ret = -EIO;
654 goto err_no_fd;
655 }
656 if (write(fd, fdt, new_size) != new_size) {
657 debug("%s: Failed to write external data to file %s\n",
658 __func__, strerror(errno));
659 ret = -EIO;
660 goto err_has_fd;
661 }
662
663 ret = 0;
664
665 err_has_fd:
666 close(fd);
667 err_no_fd:
668 munmap(old_fdt, sbuf.st_size);
669 free(fdt);
670 return ret;
671 }
672
673 /**
674 * fit_handle_file - main FIT file processing function
675 *
676 * fit_handle_file() runs dtc to convert .its to .itb, includes
677 * binary data, updates timestamp property and calculates hashes.
678 *
679 * datafile - .its file
680 * imagefile - .itb file
681 *
682 * returns:
683 * only on success, otherwise calls exit (EXIT_FAILURE);
684 */
fit_handle_file(struct image_tool_params * params)685 static int fit_handle_file(struct image_tool_params *params)
686 {
687 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
688 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
689 size_t size_inc;
690 int ret;
691
692 /* Flattened Image Tree (FIT) format handling */
693 debug ("FIT format handling\n");
694
695 /* call dtc to include binary properties into the tmp file */
696 if (strlen (params->imagefile) +
697 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
698 fprintf (stderr, "%s: Image file name (%s) too long, "
699 "can't create tmpfile",
700 params->imagefile, params->cmdname);
701 return (EXIT_FAILURE);
702 }
703 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
704
705 /* We either compile the source file, or use the existing FIT image */
706 if (params->auto_its) {
707 if (fit_build(params, tmpfile)) {
708 fprintf(stderr, "%s: failed to build FIT\n",
709 params->cmdname);
710 return EXIT_FAILURE;
711 }
712 *cmd = '\0';
713 } else if (params->datafile) {
714 /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
715 snprintf(cmd, sizeof(cmd), "%s %s \"%s\" > \"%s\"",
716 MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
717 debug("Trying to execute \"%s\"\n", cmd);
718 } else {
719 snprintf(cmd, sizeof(cmd), "cp \"%s\" \"%s\"",
720 params->imagefile, tmpfile);
721 }
722 if (*cmd && system(cmd) == -1) {
723 fprintf (stderr, "%s: system(%s) failed: %s\n",
724 params->cmdname, cmd, strerror(errno));
725 goto err_system;
726 }
727
728 /* Move the data so it is internal to the FIT, if needed */
729 ret = fit_import_data(params, tmpfile);
730 if (ret)
731 goto err_system;
732
733 /* Args "-E -p": move the data so it is external to the FIT, if requested */
734 if (params->external_data && params->external_offset) {
735 ret = fit_extract_data(params, tmpfile);
736 if (ret)
737 goto err_system;
738 }
739
740 /*
741 * Set hashes for images in the blob. Unfortunately we may need more
742 * space in either FDT, so keep trying until we succeed.
743 *
744 * Note: this is pretty inefficient for signing, since we must
745 * calculate the signature every time. It would be better to calculate
746 * all the data and then store it in a separate step. However, this
747 * would be considerably more complex to implement. Generally a few
748 * steps of this loop is enough to sign with several keys.
749 */
750 for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) {
751 ret = fit_add_file_data(params, size_inc, tmpfile);
752 if (!ret || ret != -ENOSPC)
753 break;
754 }
755
756 if (ret) {
757 fprintf(stderr, "%s Can't add hashes to FIT blob: %d\n",
758 params->cmdname, ret);
759 goto err_system;
760 }
761
762 /* Args "-E": move the data so it is external to the FIT, if requested */
763 if (params->external_data && !params->external_offset) {
764 ret = fit_extract_data(params, tmpfile);
765 if (ret)
766 goto err_system;
767 }
768
769 if (rename (tmpfile, params->imagefile) == -1) {
770 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
771 params->cmdname, tmpfile, params->imagefile,
772 strerror (errno));
773 unlink (tmpfile);
774 unlink (params->imagefile);
775 return EXIT_FAILURE;
776 }
777 return EXIT_SUCCESS;
778
779 err_system:
780 unlink(tmpfile);
781 return -1;
782 }
783
784 /**
785 * fit_image_extract - extract a FIT component image
786 * @fit: pointer to the FIT format image header
787 * @image_noffset: offset of the component image node
788 * @file_name: name of the file to store the FIT sub-image
789 *
790 * returns:
791 * zero in case of success or a negative value if fail.
792 */
fit_image_extract(const void * fit,int image_noffset,const char * file_name)793 static int fit_image_extract(
794 const void *fit,
795 int image_noffset,
796 const char *file_name)
797 {
798 const void *file_data;
799 size_t file_size = 0;
800
801 /* get the "data" property of component at offset "image_noffset" */
802 fit_image_get_data(fit, image_noffset, &file_data, &file_size);
803
804 /* save the "file_data" into the file specified by "file_name" */
805 return imagetool_save_subimage(file_name, (ulong) file_data, file_size);
806 }
807
808 /**
809 * fit_extract_contents - retrieve a sub-image component from the FIT image
810 * @ptr: pointer to the FIT format image header
811 * @params: command line parameters
812 *
813 * returns:
814 * zero in case of success or a negative value if fail.
815 */
fit_extract_contents(void * ptr,struct image_tool_params * params)816 static int fit_extract_contents(void *ptr, struct image_tool_params *params)
817 {
818 int images_noffset;
819 int noffset;
820 int ndepth;
821 const void *fit = ptr;
822 int count = 0;
823 const char *p;
824
825 /* Indent string is defined in header image.h */
826 p = IMAGE_INDENT_STRING;
827
828 if (!fit_check_format(fit)) {
829 printf("Bad FIT image format\n");
830 return -1;
831 }
832
833 /* Find images parent node offset */
834 images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
835 if (images_noffset < 0) {
836 printf("Can't find images parent node '%s' (%s)\n",
837 FIT_IMAGES_PATH, fdt_strerror(images_noffset));
838 return -1;
839 }
840
841 /* Avoid any overrun */
842 count = fit_get_subimage_count(fit, images_noffset);
843 if ((params->pflag < 0) || (count <= params->pflag)) {
844 printf("No such component at '%d'\n", params->pflag);
845 return -1;
846 }
847
848 /* Process its subnodes, extract the desired component from image */
849 for (ndepth = 0, count = 0,
850 noffset = fdt_next_node(fit, images_noffset, &ndepth);
851 (noffset >= 0) && (ndepth > 0);
852 noffset = fdt_next_node(fit, noffset, &ndepth)) {
853 if (ndepth == 1) {
854 /*
855 * Direct child node of the images parent node,
856 * i.e. component image node.
857 */
858 if (params->pflag == count) {
859 printf("Extracted:\n%s Image %u (%s)\n", p,
860 count, fit_get_name(fit, noffset, NULL));
861
862 fit_image_print(fit, noffset, p);
863
864 return fit_image_extract(fit, noffset,
865 params->outfile);
866 }
867
868 count++;
869 }
870 }
871
872 return 0;
873 }
874
fit_check_params(struct image_tool_params * params)875 static int fit_check_params(struct image_tool_params *params)
876 {
877 if (params->auto_its)
878 return 0;
879 return ((params->dflag && (params->fflag || params->lflag)) ||
880 (params->fflag && (params->dflag || params->lflag)) ||
881 (params->lflag && (params->dflag || params->fflag)));
882 }
883
884 U_BOOT_IMAGE_TYPE(
885 fitimage,
886 "FIT Image support",
887 sizeof(image_header_t),
888 (void *)&header,
889 fit_check_params,
890 fit_verify_header,
891 fit_print_contents,
892 NULL,
893 fit_extract_contents,
894 fit_check_image_types,
895 fit_handle_file,
896 NULL /* FIT images use DTB header */
897 );
898