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"
20 #include <u-boot/crc.h>
22 static image_header_t header;
24 static int fit_verify_header (unsigned char *ptr, int image_size,
25 struct image_tool_params *params)
27 return fdt_check_header(ptr);
30 static int fit_check_image_types (uint8_t type)
32 if (type == IH_TYPE_FLATDT)
38 int mmap_fdt(struct image_tool_params *params, const char *fname, void **blobp,
44 /* Load FIT blob into memory (we need to write hashes/signatures) */
45 fd = open(fname, O_RDWR | O_BINARY);
48 fprintf(stderr, "%s: Can't open %s: %s\n",
49 params->cmdname, fname, strerror(errno));
54 if (fstat(fd, sbuf) < 0) {
55 fprintf(stderr, "%s: Can't stat %s: %s\n",
56 params->cmdname, fname, strerror(errno));
61 ptr = mmap(0, sbuf->st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
62 if (ptr == MAP_FAILED) {
63 fprintf(stderr, "%s: Can't read %s: %s\n",
64 params->cmdname, fname, strerror(errno));
69 /* check if ptr has a valid blob */
70 if (fdt_check_header(ptr)) {
71 fprintf(stderr, "%s: Invalid FIT blob\n", params->cmdname);
81 * fit_handle_file - main FIT file processing function
83 * fit_handle_file() runs dtc to convert .its to .itb, includes
84 * binary data, updates timestamp property and calculates hashes.
86 * datafile - .its file
87 * imagefile - .itb file
90 * only on success, otherwise calls exit (EXIT_FAILURE);
92 static int fit_handle_file(struct image_tool_params *params)
94 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
95 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
97 void *dest_blob = NULL;
100 off_t destfd_size = 0;
102 /* Flattened Image Tree (FIT) format handling */
103 debug ("FIT format handling\n");
105 /* call dtc to include binary properties into the tmp file */
106 if (strlen (params->imagefile) +
107 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
108 fprintf (stderr, "%s: Image file name (%s) too long, "
109 "can't create tmpfile",
110 params->imagefile, params->cmdname);
111 return (EXIT_FAILURE);
113 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
115 /* We either compile the source file, or use the existing FIT image */
116 if (params->datafile) {
117 /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
118 snprintf(cmd, sizeof(cmd), "%s %s %s > %s",
119 MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
120 debug("Trying to execute \"%s\"\n", cmd);
122 snprintf(cmd, sizeof(cmd), "cp %s %s",
123 params->imagefile, tmpfile);
125 if (system (cmd) == -1) {
126 fprintf (stderr, "%s: system(%s) failed: %s\n",
127 params->cmdname, cmd, strerror(errno));
131 if (params->keydest) {
132 destfd = mmap_fdt(params, params->keydest, &dest_blob, &sbuf);
135 destfd_size = sbuf.st_size;
138 tfd = mmap_fdt(params, tmpfile, &ptr, &sbuf);
142 /* set hashes for images in the blob */
143 if (fit_add_verification_data(params->keydir,
144 dest_blob, ptr, params->comment,
145 params->require_keys)) {
146 fprintf(stderr, "%s Can't add hashes to FIT blob\n",
151 /* for first image creation, add a timestamp at offset 0 i.e., root */
152 if (params->datafile && fit_set_timestamp(ptr, 0, sbuf.st_mtime)) {
153 fprintf (stderr, "%s: Can't add image timestamp\n",
155 goto err_add_timestamp;
157 debug ("Added timestamp successfully\n");
159 munmap ((void *)ptr, sbuf.st_size);
162 munmap(dest_blob, destfd_size);
166 if (rename (tmpfile, params->imagefile) == -1) {
167 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
168 params->cmdname, tmpfile, params->imagefile,
171 unlink (params->imagefile);
172 return (EXIT_FAILURE);
174 return (EXIT_SUCCESS);
178 munmap(ptr, sbuf.st_size);
181 munmap(dest_blob, destfd_size);
188 static int fit_check_params(struct image_tool_params *params)
190 return ((params->dflag && (params->fflag || params->lflag)) ||
191 (params->fflag && (params->dflag || params->lflag)) ||
192 (params->lflag && (params->dflag || params->fflag)));
195 static struct image_type_params fitimage_params = {
196 .name = "FIT Image support",
197 .header_size = sizeof(image_header_t),
198 .hdr = (void*)&header,
199 .verify_header = fit_verify_header,
200 .print_header = fit_print_contents,
201 .check_image_type = fit_check_image_types,
202 .fflag_handle = fit_handle_file,
203 .set_header = NULL, /* FIT images use DTB header */
204 .check_params = fit_check_params,
207 void init_fit_image_type (void)
209 register_image_type(&fitimage_params);