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Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +05301/*
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 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 * MA 02111-1307 USA
28 */
29
30#include "mkimage.h"
31#include <image.h>
32#include <u-boot/crc.h>
33
34static image_header_t header;
35
36static int fit_verify_header (unsigned char *ptr, int image_size,
37 struct mkimage_params *params)
38{
39 return fdt_check_header ((void *)ptr);
40}
41
42static int fit_check_image_types (uint8_t type)
43{
44 if (type == IH_TYPE_FLATDT)
45 return EXIT_SUCCESS;
46 else
47 return EXIT_FAILURE;
48}
49
50/**
51 * fit_handle_file - main FIT file processing function
52 *
53 * fit_handle_file() runs dtc to convert .its to .itb, includes
54 * binary data, updates timestamp property and calculates hashes.
55 *
56 * datafile - .its file
57 * imagefile - .itb file
58 *
59 * returns:
60 * only on success, otherwise calls exit (EXIT_FAILURE);
61 */
62static int fit_handle_file (struct mkimage_params *params)
63{
64 char tmpfile[MKIMAGE_MAX_TMPFILE_LEN];
65 char cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN];
66 int tfd;
67 struct stat sbuf;
68 unsigned char *ptr;
69
70 /* Flattened Image Tree (FIT) format handling */
71 debug ("FIT format handling\n");
72
73 /* call dtc to include binary properties into the tmp file */
74 if (strlen (params->imagefile) +
75 strlen (MKIMAGE_TMPFILE_SUFFIX) + 1 > sizeof (tmpfile)) {
76 fprintf (stderr, "%s: Image file name (%s) too long, "
77 "can't create tmpfile",
78 params->imagefile, params->cmdname);
79 return (EXIT_FAILURE);
80 }
81 sprintf (tmpfile, "%s%s", params->imagefile, MKIMAGE_TMPFILE_SUFFIX);
82
Lars Rasmussonee7c0fc2012-12-11 11:11:52 +010083 /* dtc -I dts -O dtb -p 500 datafile > tmpfile */
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053084 sprintf (cmd, "%s %s %s > %s",
85 MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
86 debug ("Trying to execute \"%s\"\n", cmd);
87 if (system (cmd) == -1) {
88 fprintf (stderr, "%s: system(%s) failed: %s\n",
89 params->cmdname, cmd, strerror(errno));
90 unlink (tmpfile);
91 return (EXIT_FAILURE);
92 }
93
94 /* load FIT blob into memory */
95 tfd = open (tmpfile, O_RDWR|O_BINARY);
96
97 if (tfd < 0) {
98 fprintf (stderr, "%s: Can't open %s: %s\n",
99 params->cmdname, tmpfile, strerror(errno));
100 unlink (tmpfile);
101 return (EXIT_FAILURE);
102 }
103
104 if (fstat (tfd, &sbuf) < 0) {
105 fprintf (stderr, "%s: Can't stat %s: %s\n",
106 params->cmdname, tmpfile, strerror(errno));
107 unlink (tmpfile);
108 return (EXIT_FAILURE);
109 }
110
111 ptr = mmap (0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED,
112 tfd, 0);
113 if (ptr == MAP_FAILED) {
114 fprintf (stderr, "%s: Can't read %s: %s\n",
115 params->cmdname, tmpfile, strerror(errno));
116 unlink (tmpfile);
117 return (EXIT_FAILURE);
118 }
119
120 /* check if ptr has a valid blob */
121 if (fdt_check_header (ptr)) {
122 fprintf (stderr, "%s: Invalid FIT blob\n", params->cmdname);
123 unlink (tmpfile);
124 return (EXIT_FAILURE);
125 }
126
127 /* set hashes for images in the blob */
128 if (fit_set_hashes (ptr)) {
129 fprintf (stderr, "%s Can't add hashes to FIT blob",
130 params->cmdname);
131 unlink (tmpfile);
132 return (EXIT_FAILURE);
133 }
134
135 /* add a timestamp at offset 0 i.e., root */
136 if (fit_set_timestamp (ptr, 0, sbuf.st_mtime)) {
137 fprintf (stderr, "%s: Can't add image timestamp\n",
138 params->cmdname);
139 unlink (tmpfile);
140 return (EXIT_FAILURE);
141 }
142 debug ("Added timestamp successfully\n");
143
144 munmap ((void *)ptr, sbuf.st_size);
145 close (tfd);
146
147 if (rename (tmpfile, params->imagefile) == -1) {
148 fprintf (stderr, "%s: Can't rename %s to %s: %s\n",
149 params->cmdname, tmpfile, params->imagefile,
150 strerror (errno));
151 unlink (tmpfile);
152 unlink (params->imagefile);
153 return (EXIT_FAILURE);
154 }
155 return (EXIT_SUCCESS);
156}
157
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530158static int fit_check_params (struct mkimage_params *params)
159{
160 return ((params->dflag && (params->fflag || params->lflag)) ||
161 (params->fflag && (params->dflag || params->lflag)) ||
162 (params->lflag && (params->dflag || params->fflag)));
163}
164
165static 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,
Peter Tyser8e1c8962009-11-24 16:42:09 -0600173 .set_header = NULL, /* FIT images use DTB header */
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530174 .check_params = fit_check_params,
175};
176
177void init_fit_image_type (void)
178{
179 mkimage_register (&fitimage_params);
180}