1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2008 Semihalf
5 * (C) Copyright 2000-2004
6 * DENX Software Engineering
10 * FIT image specific code abstracted from mkimage.c
11 * some functions added to address abstraction
13 * All rights reserved.
16 #include "imagetool.h"
17 #include "fit_common.h"
23 #include <u-boot/crc.h>
25 static image_header_t header;
27 static int fit_add_file_data(struct image_tool_params *params, size_t size_inc,
31 void *dest_blob = NULL;
32 off_t destfd_size = 0;
37 tfd = mmap_fdt(params->cmdname, tmpfile, size_inc, &ptr, &sbuf, true,
42 if (params->keydest) {
43 struct stat dest_sbuf;
45 destfd = mmap_fdt(params->cmdname, params->keydest, size_inc,
46 &dest_blob, &dest_sbuf, false,
52 destfd_size = dest_sbuf.st_size;
55 /* for first image creation, add a timestamp at offset 0 i.e., root */
56 if (params->datafile) {
57 time_t time = imagetool_get_source_date(params->cmdname,
59 ret = fit_set_timestamp(ptr, 0, time);
63 ret = fit_cipher_data(params->keydir, dest_blob, ptr,
71 ret = fit_add_verification_data(params->keydir, dest_blob, ptr,
79 munmap(dest_blob, destfd_size);
84 munmap(ptr, sbuf.st_size);
90 * fit_calc_size() - Calculate the approximate size of the FIT we will generate
92 static int fit_calc_size(struct image_tool_params *params)
94 struct content_info *cont;
97 size = imagetool_get_filesize(params, params->datafile);
102 if (params->fit_ramdisk) {
103 size = imagetool_get_filesize(params, params->fit_ramdisk);
109 for (cont = params->content_head; cont; cont = cont->next) {
110 size = imagetool_get_filesize(params, cont->fname);
114 /* Add space for properties */
115 total_size += size + 300;
118 /* Add plenty of space for headers, properties, nodes, etc. */
124 static int fdt_property_file(struct image_tool_params *params,
125 void *fdt, const char *name, const char *fname)
132 fd = open(fname, O_RDWR | O_BINARY);
134 fprintf(stderr, "%s: Can't open %s: %s\n",
135 params->cmdname, fname, strerror(errno));
139 if (fstat(fd, &sbuf) < 0) {
140 fprintf(stderr, "%s: Can't stat %s: %s\n",
141 params->cmdname, fname, strerror(errno));
145 ret = fdt_property_placeholder(fdt, "data", sbuf.st_size, &ptr);
148 ret = read(fd, ptr, sbuf.st_size);
149 if (ret != sbuf.st_size) {
150 fprintf(stderr, "%s: Can't read %s: %s\n",
151 params->cmdname, fname, strerror(errno));
162 static int fdt_property_strf(void *fdt, const char *name, const char *fmt, ...)
168 vsnprintf(str, sizeof(str), fmt, ptr);
170 return fdt_property_string(fdt, name, str);
173 static void get_basename(char *str, int size, const char *fname)
175 const char *p, *start, *end;
179 * Use the base name as the 'name' field. So for example:
181 * "arch/arm/dts/sun7i-a20-bananapro.dtb"
182 * becomes "sun7i-a20-bananapro"
184 p = strrchr(fname, '/');
185 start = p ? p + 1 : fname;
186 p = strrchr(fname, '.');
187 end = p ? p : fname + strlen(fname);
191 memcpy(str, start, len);
196 * fit_write_images() - Write out a list of images to the FIT
198 * We always include the main image (params->datafile). If there are device
199 * tree files, we include an fdt- node for each of those too.
201 static int fit_write_images(struct image_tool_params *params, char *fdt)
203 struct content_info *cont;
204 const char *typename;
209 fdt_begin_node(fdt, "images");
211 /* First the main image */
212 typename = genimg_get_type_short_name(params->fit_image_type);
213 snprintf(str, sizeof(str), "%s-1", typename);
214 fdt_begin_node(fdt, str);
215 fdt_property_string(fdt, FIT_DESC_PROP, params->imagename);
216 fdt_property_string(fdt, FIT_TYPE_PROP, typename);
217 fdt_property_string(fdt, FIT_ARCH_PROP,
218 genimg_get_arch_short_name(params->arch));
219 fdt_property_string(fdt, FIT_OS_PROP,
220 genimg_get_os_short_name(params->os));
221 fdt_property_string(fdt, FIT_COMP_PROP,
222 genimg_get_comp_short_name(params->comp));
223 fdt_property_u32(fdt, FIT_LOAD_PROP, params->addr);
224 fdt_property_u32(fdt, FIT_ENTRY_PROP, params->ep);
227 * Put data last since it is large. SPL may only load the first part
228 * of the DT, so this way it can access all the above fields.
230 ret = fdt_property_file(params, fdt, FIT_DATA_PROP, params->datafile);
235 /* Now the device tree files if available */
237 for (cont = params->content_head; cont; cont = cont->next) {
238 if (cont->type != IH_TYPE_FLATDT)
240 typename = genimg_get_type_short_name(cont->type);
241 snprintf(str, sizeof(str), "%s-%d", FIT_FDT_PROP, ++upto);
242 fdt_begin_node(fdt, str);
244 get_basename(str, sizeof(str), cont->fname);
245 fdt_property_string(fdt, FIT_DESC_PROP, str);
246 ret = fdt_property_file(params, fdt, FIT_DATA_PROP,
250 fdt_property_string(fdt, FIT_TYPE_PROP, typename);
251 fdt_property_string(fdt, FIT_ARCH_PROP,
252 genimg_get_arch_short_name(params->arch));
253 fdt_property_string(fdt, FIT_COMP_PROP,
254 genimg_get_comp_short_name(IH_COMP_NONE));
258 /* And a ramdisk file if available */
259 if (params->fit_ramdisk) {
260 fdt_begin_node(fdt, FIT_RAMDISK_PROP "-1");
262 fdt_property_string(fdt, FIT_TYPE_PROP, FIT_RAMDISK_PROP);
263 fdt_property_string(fdt, FIT_OS_PROP,
264 genimg_get_os_short_name(params->os));
265 fdt_property_string(fdt, FIT_ARCH_PROP,
266 genimg_get_arch_short_name(params->arch));
268 ret = fdt_property_file(params, fdt, FIT_DATA_PROP,
269 params->fit_ramdisk);
282 * fit_write_configs() - Write out a list of configurations to the FIT
284 * If there are device tree files, we include a configuration for each, which
285 * selects the main image (params->datafile) and its corresponding device
288 * Otherwise we just create a configuration with the main image in it.
290 static void fit_write_configs(struct image_tool_params *params, char *fdt)
292 struct content_info *cont;
293 const char *typename;
297 fdt_begin_node(fdt, "configurations");
298 fdt_property_string(fdt, FIT_DEFAULT_PROP, "conf-1");
301 for (cont = params->content_head; cont; cont = cont->next) {
302 if (cont->type != IH_TYPE_FLATDT)
304 typename = genimg_get_type_short_name(cont->type);
305 snprintf(str, sizeof(str), "conf-%d", ++upto);
306 fdt_begin_node(fdt, str);
308 get_basename(str, sizeof(str), cont->fname);
309 fdt_property_string(fdt, FIT_DESC_PROP, str);
311 typename = genimg_get_type_short_name(params->fit_image_type);
312 snprintf(str, sizeof(str), "%s-1", typename);
313 fdt_property_string(fdt, typename, str);
314 fdt_property_string(fdt, FIT_LOADABLE_PROP, str);
316 if (params->fit_ramdisk)
317 fdt_property_string(fdt, FIT_RAMDISK_PROP,
318 FIT_RAMDISK_PROP "-1");
320 snprintf(str, sizeof(str), FIT_FDT_PROP "-%d", upto);
321 fdt_property_string(fdt, FIT_FDT_PROP, str);
326 fdt_begin_node(fdt, "conf-1");
327 typename = genimg_get_type_short_name(params->fit_image_type);
328 snprintf(str, sizeof(str), "%s-1", typename);
329 fdt_property_string(fdt, typename, str);
331 if (params->fit_ramdisk)
332 fdt_property_string(fdt, FIT_RAMDISK_PROP,
333 FIT_RAMDISK_PROP "-1");
341 static int fit_build_fdt(struct image_tool_params *params, char *fdt, int size)
345 ret = fdt_create(fdt, size);
348 fdt_finish_reservemap(fdt);
349 fdt_begin_node(fdt, "");
350 fdt_property_strf(fdt, FIT_DESC_PROP,
351 "%s image with one or more FDT blobs",
352 genimg_get_type_name(params->fit_image_type));
353 fdt_property_strf(fdt, "creator", "U-Boot mkimage %s", PLAIN_VERSION);
354 fdt_property_u32(fdt, "#address-cells", 1);
355 ret = fit_write_images(params, fdt);
358 fit_write_configs(params, fdt);
360 ret = fdt_finish(fdt);
364 return fdt_totalsize(fdt);
367 static int fit_build(struct image_tool_params *params, const char *fname)
374 size = fit_calc_size(params);
379 fprintf(stderr, "%s: Out of memory (%d bytes)\n",
380 params->cmdname, size);
383 ret = fit_build_fdt(params, buf, size);
385 fprintf(stderr, "%s: Failed to build FIT image\n",
390 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
392 fprintf(stderr, "%s: Can't open %s: %s\n",
393 params->cmdname, fname, strerror(errno));
396 ret = write(fd, buf, size);
398 fprintf(stderr, "%s: Can't write %s: %s\n",
399 params->cmdname, fname, strerror(errno));
414 * fit_extract_data() - Move all data outside the FIT
416 * This takes a normal FIT file and removes all the 'data' properties from it.
417 * The data is placed in an area after the FIT so that it can be accessed
418 * using an offset into that area. The 'data' properties turn into
419 * 'data-offset' properties.
421 * This function cannot cope with FITs with 'data-offset' properties. All
422 * data must be in 'data' properties on entry.
424 static int fit_extract_data(struct image_tool_params *params, const char *fname)
428 int fit_size, new_size;
438 align_size = params->bl_len ? params->bl_len : 4;
439 fd = mmap_fdt(params->cmdname, fname, 0, &fdt, &sbuf, false, false);
442 fit_size = fdt_totalsize(fdt);
444 images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
446 debug("%s: Cannot find /images node: %d\n", __func__, images);
450 image_number = fdtdec_get_child_count(fdt, images);
453 * Allocate space to hold the image data we will extract,
454 * extral space allocate for image alignment to prevent overflow.
456 buf = malloc(fit_size + (align_size * image_number));
463 for (node = fdt_first_subnode(fdt, images);
465 node = fdt_next_subnode(fdt, node)) {
469 data = fdt_getprop(fdt, node, FIT_DATA_PROP, &len);
472 memcpy(buf + buf_ptr, data, len);
473 debug("Extracting data size %x\n", len);
475 ret = fdt_delprop(fdt, node, FIT_DATA_PROP);
480 if (params->external_offset > 0) {
481 /* An external offset positions the data absolutely. */
482 fdt_setprop_u32(fdt, node, FIT_DATA_POSITION_PROP,
483 params->external_offset + buf_ptr);
485 fdt_setprop_u32(fdt, node, FIT_DATA_OFFSET_PROP,
488 fdt_setprop_u32(fdt, node, FIT_DATA_SIZE_PROP, len);
489 buf_ptr += ALIGN(len, align_size);
492 /* Pack the FDT and place the data after it */
495 new_size = fdt_totalsize(fdt);
496 new_size = ALIGN(new_size, align_size);
497 fdt_set_totalsize(fdt, new_size);
498 debug("Size reduced from %x to %x\n", fit_size, fdt_totalsize(fdt));
499 debug("External data size %x\n", buf_ptr);
500 munmap(fdt, sbuf.st_size);
502 if (ftruncate(fd, new_size)) {
503 debug("%s: Failed to truncate file: %s\n", __func__,
509 /* Check if an offset for the external data was set. */
510 if (params->external_offset > 0) {
511 if (params->external_offset < new_size) {
512 debug("External offset %x overlaps FIT length %x",
513 params->external_offset, new_size);
517 new_size = params->external_offset;
519 if (lseek(fd, new_size, SEEK_SET) < 0) {
520 debug("%s: Failed to seek to end of file: %s\n", __func__,
525 if (write(fd, buf, buf_ptr) != buf_ptr) {
526 debug("%s: Failed to write external data to file %s\n",
527 __func__, strerror(errno));
536 munmap(fdt, sbuf.st_size);
543 static int fit_import_data(struct image_tool_params *params, const char *fname)
546 int fit_size, new_size, size, data_base;
553 fd = mmap_fdt(params->cmdname, fname, 0, &old_fdt, &sbuf, false, false);
556 fit_size = fdt_totalsize(old_fdt);
557 data_base = ALIGN(fit_size, 4);
559 /* Allocate space to hold the new FIT */
560 size = sbuf.st_size + 16384;
563 fprintf(stderr, "%s: Failed to allocate memory (%d bytes)\n",
568 ret = fdt_open_into(old_fdt, fdt, size);
570 debug("%s: Failed to expand FIT: %s\n", __func__,
571 fdt_strerror(errno));
576 images = fdt_path_offset(fdt, FIT_IMAGES_PATH);
578 debug("%s: Cannot find /images node: %d\n", __func__, images);
583 for (node = fdt_first_subnode(fdt, images);
585 node = fdt_next_subnode(fdt, node)) {
589 buf_ptr = fdtdec_get_int(fdt, node, "data-offset", -1);
590 len = fdtdec_get_int(fdt, node, "data-size", -1);
591 if (buf_ptr == -1 || len == -1)
593 debug("Importing data size %x\n", len);
595 ret = fdt_setprop(fdt, node, "data", fdt + data_base + buf_ptr,
598 debug("%s: Failed to write property: %s\n", __func__,
605 munmap(old_fdt, sbuf.st_size);
607 /* Close the old fd so we can re-use it. */
610 /* Pack the FDT and place the data after it */
613 new_size = fdt_totalsize(fdt);
614 debug("Size expanded from %x to %x\n", fit_size, new_size);
616 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0666);
618 fprintf(stderr, "%s: Can't open %s: %s\n",
619 params->cmdname, fname, strerror(errno));
623 if (write(fd, fdt, new_size) != new_size) {
624 debug("%s: Failed to write external data to file %s\n",
625 __func__, strerror(errno));
635 munmap(old_fdt, sbuf.st_size);
642 static int copyfile(const char *src, const char *dst)
644 int fd_src = -1, fd_dst = -1;
650 fd_src = open(src, O_RDONLY);
652 printf("Can't open file %s (%s)\n", src, strerror(errno));
656 fd_dst = open(dst, O_WRONLY | O_CREAT, 0666);
658 printf("Can't open file %s (%s)\n", dst, strerror(errno));
664 printf("Can't allocate buffer to copy file\n");
669 size = read(fd_src, buf, 512);
671 printf("Can't read file %s\n", src);
678 size = write(fd_dst, buf, count);
680 printf("Can't write file %s\n", dst);
699 * fit_handle_file - main FIT file processing function
701 * fit_handle_file() runs dtc to convert .its to .itb, includes
702 * binary data, updates timestamp property and calculates hashes.
704 * datafile - .its file
705 * imagefile - .itb file
708 * only on success, otherwise calls exit (EXIT_FAILURE);
710 static int fit_handle_file(struct image_tool_params *params)
712 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
713 char bakfile[MKIMAGE_MAX_TMPFILE_LEN + 4] = {0};
714 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
718 /* Flattened Image Tree (FIT) format handling */
719 debug ("FIT format handling\n");
721 /* call dtc to include binary properties into the tmp file */
722 if (strlen (params->imagefile) +
723 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
724 fprintf (stderr, "%s: Image file name (%s) too long, "
725 "can't create tmpfile",
726 params->imagefile, params->cmdname);
727 return (EXIT_FAILURE);
729 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
731 /* We either compile the source file, or use the existing FIT image */
732 if (params->auto_its) {
733 if (fit_build(params, tmpfile)) {
734 fprintf(stderr, "%s: failed to build FIT\n",
739 } else if (params->datafile) {
740 /* dtc -I dts -O dtb -p 500 -o tmpfile datafile */
741 snprintf(cmd, sizeof(cmd), "%s %s -o \"%s\" \"%s\"",
742 MKIMAGE_DTC, params->dtc, tmpfile, params->datafile);
743 debug("Trying to execute \"%s\"\n", cmd);
745 snprintf(cmd, sizeof(cmd), "cp \"%s\" \"%s\"",
746 params->imagefile, tmpfile);
748 if (strlen(cmd) >= MKIMAGE_MAX_DTC_CMDLINE_LEN - 1) {
749 fprintf(stderr, "WARNING: command-line for FIT creation might be truncated and will probably fail.\n");
752 if (*cmd && system(cmd) == -1) {
753 fprintf (stderr, "%s: system(%s) failed: %s\n",
754 params->cmdname, cmd, strerror(errno));
758 /* Move the data so it is internal to the FIT, if needed */
759 ret = fit_import_data(params, tmpfile);
764 * Copy the tmpfile to bakfile, then in the following loop
765 * we copy bakfile to tmpfile. So we always start from the
768 sprintf(bakfile, "%s%s", tmpfile, ".bak");
769 rename(tmpfile, bakfile);
772 * Set hashes for images in the blob. Unfortunately we may need more
773 * space in either FDT, so keep trying until we succeed.
775 * Note: this is pretty inefficient for signing, since we must
776 * calculate the signature every time. It would be better to calculate
777 * all the data and then store it in a separate step. However, this
778 * would be considerably more complex to implement. Generally a few
779 * steps of this loop is enough to sign with several keys.
781 for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) {
782 if (copyfile(bakfile, tmpfile) < 0) {
783 printf("Can't copy %s to %s\n", bakfile, tmpfile);
787 ret = fit_add_file_data(params, size_inc, tmpfile);
788 if (!ret || ret != -ENOSPC)
793 fprintf(stderr, "%s Can't add hashes to FIT blob: %d\n",
794 params->cmdname, ret);
798 /* Move the data so it is external to the FIT, if requested */
799 if (params->external_data) {
800 ret = fit_extract_data(params, tmpfile);
805 if (rename (tmpfile, params->imagefile) == -1) {
806 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
807 params->cmdname, tmpfile, params->imagefile,
811 unlink (params->imagefile);
824 * fit_image_extract - extract a FIT component image
825 * @fit: pointer to the FIT format image header
826 * @image_noffset: offset of the component image node
827 * @file_name: name of the file to store the FIT sub-image
830 * zero in case of success or a negative value if fail.
832 static int fit_image_extract(
835 const char *file_name)
837 const void *file_data;
838 size_t file_size = 0;
841 /* get the data address and size of component at offset "image_noffset" */
842 ret = fit_image_get_data_and_size(fit, image_noffset, &file_data, &file_size);
844 fprintf(stderr, "Could not get component information\n");
848 /* save the "file_data" into the file specified by "file_name" */
849 return imagetool_save_subimage(file_name, (ulong) file_data, file_size);
853 * fit_extract_contents - retrieve a sub-image component from the FIT image
854 * @ptr: pointer to the FIT format image header
855 * @params: command line parameters
858 * zero in case of success or a negative value if fail.
860 static int fit_extract_contents(void *ptr, struct image_tool_params *params)
865 const void *fit = ptr;
869 /* Indent string is defined in header image.h */
870 p = IMAGE_INDENT_STRING;
872 if (!fit_check_format(fit)) {
873 printf("Bad FIT image format\n");
877 /* Find images parent node offset */
878 images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
879 if (images_noffset < 0) {
880 printf("Can't find images parent node '%s' (%s)\n",
881 FIT_IMAGES_PATH, fdt_strerror(images_noffset));
885 /* Avoid any overrun */
886 count = fit_get_subimage_count(fit, images_noffset);
887 if ((params->pflag < 0) || (count <= params->pflag)) {
888 printf("No such component at '%d'\n", params->pflag);
892 /* Process its subnodes, extract the desired component from image */
893 for (ndepth = 0, count = 0,
894 noffset = fdt_next_node(fit, images_noffset, &ndepth);
895 (noffset >= 0) && (ndepth > 0);
896 noffset = fdt_next_node(fit, noffset, &ndepth)) {
899 * Direct child node of the images parent node,
900 * i.e. component image node.
902 if (params->pflag == count) {
903 printf("Extracted:\n%s Image %u (%s)\n", p,
904 count, fit_get_name(fit, noffset, NULL));
906 fit_image_print(fit, noffset, p);
908 return fit_image_extract(fit, noffset,
919 static int fit_check_params(struct image_tool_params *params)
921 if (params->auto_its)
923 return ((params->dflag && params->fflag) ||
924 (params->fflag && params->lflag) ||
925 (params->lflag && params->dflag));
931 sizeof(image_header_t),
937 fit_extract_contents,
938 fit_check_image_types,
940 NULL /* FIT images use DTB header */