2 * (C) Copyright 2008 Semihalf
4 * (C) Copyright 2000-2004
5 * DENX Software Engineering
6 * Wolfgang Denk, wd@denx.de
8 * Updated-by: Prafulla Wadaskar <prafulla@marvell.com>
9 * FIT image specific code abstracted from mkimage.c
10 * some functions added to address abstraction
12 * All rights reserved.
14 * SPDX-License-Identifier: GPL-2.0+
17 #include "imagetool.h"
18 #include "fit_common.h"
21 #include <u-boot/crc.h>
23 static image_header_t header;
25 static int fit_add_file_data(struct image_tool_params *params, size_t size_inc,
29 void *dest_blob = NULL;
30 off_t destfd_size = 0;
35 tfd = mmap_fdt(params->cmdname, tmpfile, size_inc, &ptr, &sbuf, true);
39 if (params->keydest) {
40 struct stat dest_sbuf;
42 destfd = mmap_fdt(params->cmdname, params->keydest, size_inc,
43 &dest_blob, &dest_sbuf, false);
48 destfd_size = dest_sbuf.st_size;
51 /* for first image creation, add a timestamp at offset 0 i.e., root */
53 ret = fit_set_timestamp(ptr, 0, sbuf.st_mtime);
56 ret = fit_add_verification_data(params->keydir, dest_blob, ptr,
58 params->require_keys);
62 munmap(dest_blob, destfd_size);
67 munmap(ptr, sbuf.st_size);
74 * fit_handle_file - main FIT file processing function
76 * fit_handle_file() runs dtc to convert .its to .itb, includes
77 * binary data, updates timestamp property and calculates hashes.
79 * datafile - .its file
80 * imagefile - .itb file
83 * only on success, otherwise calls exit (EXIT_FAILURE);
85 static int fit_handle_file(struct image_tool_params *params)
87 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
88 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
92 /* Flattened Image Tree (FIT) format handling */
93 debug ("FIT format handling\n");
95 /* call dtc to include binary properties into the tmp file */
96 if (strlen (params->imagefile) +
97 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
98 fprintf (stderr, "%s: Image file name (%s) too long, "
99 "can't create tmpfile",
100 params->imagefile, params->cmdname);
101 return (EXIT_FAILURE);
103 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
105 /* We either compile the source file, or use the existing FIT image */
106 if (params->datafile) {
107 /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
108 snprintf(cmd, sizeof(cmd), "%s %s %s > %s",
109 MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
110 debug("Trying to execute \"%s\"\n", cmd);
112 snprintf(cmd, sizeof(cmd), "cp %s %s",
113 params->imagefile, tmpfile);
115 if (system (cmd) == -1) {
116 fprintf (stderr, "%s: system(%s) failed: %s\n",
117 params->cmdname, cmd, strerror(errno));
122 * Set hashes for images in the blob. Unfortunately we may need more
123 * space in either FDT, so keep trying until we succeed.
125 * Note: this is pretty inefficient for signing, since we must
126 * calculate the signature every time. It would be better to calculate
127 * all the data and then store it in a separate step. However, this
128 * would be considerably more complex to implement. Generally a few
129 * steps of this loop is enough to sign with several keys.
131 for (size_inc = 0; size_inc < 64 * 1024; size_inc += 1024) {
132 ret = fit_add_file_data(params, size_inc, tmpfile);
133 if (!ret || ret != -ENOSPC)
138 fprintf(stderr, "%s Can't add hashes to FIT blob\n",
143 if (rename (tmpfile, params->imagefile) == -1) {
144 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
145 params->cmdname, tmpfile, params->imagefile,
148 unlink (params->imagefile);
159 * fit_image_extract - extract a FIT component image
160 * @fit: pointer to the FIT format image header
161 * @image_noffset: offset of the component image node
162 * @file_name: name of the file to store the FIT sub-image
165 * zero in case of success or a negative value if fail.
167 static int fit_image_extract(
170 const char *file_name)
172 const void *file_data;
173 size_t file_size = 0;
175 /* get the "data" property of component at offset "image_noffset" */
176 fit_image_get_data(fit, image_noffset, &file_data, &file_size);
178 /* save the "file_data" into the file specified by "file_name" */
179 return imagetool_save_subimage(file_name, (ulong) file_data, file_size);
183 * fit_extract_contents - retrieve a sub-image component from the FIT image
184 * @ptr: pointer to the FIT format image header
185 * @params: command line parameters
188 * zero in case of success or a negative value if fail.
190 static int fit_extract_contents(void *ptr, struct image_tool_params *params)
195 const void *fit = ptr;
199 /* Indent string is defined in header image.h */
200 p = IMAGE_INDENT_STRING;
202 if (!fit_check_format(fit)) {
203 printf("Bad FIT image format\n");
207 /* Find images parent node offset */
208 images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
209 if (images_noffset < 0) {
210 printf("Can't find images parent node '%s' (%s)\n",
211 FIT_IMAGES_PATH, fdt_strerror(images_noffset));
215 /* Avoid any overrun */
216 count = fit_get_subimage_count(fit, images_noffset);
217 if ((params->pflag < 0) || (count <= params->pflag)) {
218 printf("No such component at '%d'\n", params->pflag);
222 /* Process its subnodes, extract the desired component from image */
223 for (ndepth = 0, count = 0,
224 noffset = fdt_next_node(fit, images_noffset, &ndepth);
225 (noffset >= 0) && (ndepth > 0);
226 noffset = fdt_next_node(fit, noffset, &ndepth)) {
229 * Direct child node of the images parent node,
230 * i.e. component image node.
232 if (params->pflag == count) {
233 printf("Extracted:\n%s Image %u (%s)\n", p,
234 count, fit_get_name(fit, noffset, NULL));
236 fit_image_print(fit, noffset, p);
238 return fit_image_extract(fit, noffset,
249 static int fit_check_params(struct image_tool_params *params)
251 return ((params->dflag && (params->fflag || params->lflag)) ||
252 (params->fflag && (params->dflag || params->lflag)) ||
253 (params->lflag && (params->dflag || params->fflag)));
259 sizeof(image_header_t),
265 fit_extract_contents,
266 fit_check_image_types,
268 NULL /* FIT images use DTB header */