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
);
158 static int fit_check_params(struct image_tool_params
*params
)
160 return ((params
->dflag
&& (params
->fflag
|| params
->lflag
)) ||
161 (params
->fflag
&& (params
->dflag
|| params
->lflag
)) ||
162 (params
->lflag
&& (params
->dflag
|| params
->fflag
)));
165 static struct image_type_params fitimage_params
= {
166 .name
= "FIT Image support",
167 .header_size
= sizeof(image_header_t
),
168 .hdr
= (void*)&header
,
169 .verify_header
= fit_verify_header
,
170 .print_header
= fit_print_contents
,
171 .check_image_type
= fit_check_image_types
,
172 .fflag_handle
= fit_handle_file
,
173 .set_header
= NULL
, /* FIT images use DTB header */
174 .check_params
= fit_check_params
,
177 void init_fit_image_type (void)
179 register_image_type(&fitimage_params
);