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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 * default_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
Stephen Warren712fbcf2011-10-18 11:11:49 +000036static int image_check_image_types(uint8_t type)
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053037{
38 if ((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT))
39 return EXIT_SUCCESS;
40 else
41 return EXIT_FAILURE;
42}
43
Stephen Warren712fbcf2011-10-18 11:11:49 +000044static int image_check_params(struct mkimage_params *params)
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053045{
46 return ((params->dflag && (params->fflag || params->lflag)) ||
47 (params->fflag && (params->dflag || params->lflag)) ||
48 (params->lflag && (params->dflag || params->fflag)));
49}
50
Stephen Warren712fbcf2011-10-18 11:11:49 +000051static int image_verify_header(unsigned char *ptr, int image_size,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053052 struct mkimage_params *params)
53{
54 uint32_t len;
55 const unsigned char *data;
56 uint32_t checksum;
57 image_header_t header;
58 image_header_t *hdr = &header;
59
60 /*
61 * create copy of header so that we can blank out the
62 * checksum field for checking - this can't be done
63 * on the PROT_READ mapped data.
64 */
Stephen Warren712fbcf2011-10-18 11:11:49 +000065 memcpy(hdr, ptr, sizeof(image_header_t));
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053066
67 if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
Stephen Warren712fbcf2011-10-18 11:11:49 +000068 fprintf(stderr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053069 "%s: Bad Magic Number: \"%s\" is no valid image\n",
70 params->cmdname, params->imagefile);
71 return -FDT_ERR_BADMAGIC;
72 }
73
74 data = (const unsigned char *)hdr;
75 len = sizeof(image_header_t);
76
77 checksum = be32_to_cpu(hdr->ih_hcrc);
78 hdr->ih_hcrc = cpu_to_be32(0); /* clear for re-calculation */
79
Stephen Warren712fbcf2011-10-18 11:11:49 +000080 if (crc32(0, data, len) != checksum) {
81 fprintf(stderr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053082 "%s: ERROR: \"%s\" has bad header checksum!\n",
83 params->cmdname, params->imagefile);
84 return -FDT_ERR_BADSTATE;
85 }
86
87 data = (const unsigned char *)ptr + sizeof(image_header_t);
88 len = image_size - sizeof(image_header_t) ;
89
90 checksum = be32_to_cpu(hdr->ih_dcrc);
Stephen Warren712fbcf2011-10-18 11:11:49 +000091 if (crc32(0, data, len) != checksum) {
92 fprintf(stderr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +053093 "%s: ERROR: \"%s\" has corrupted data!\n",
94 params->cmdname, params->imagefile);
95 return -FDT_ERR_BADSTRUCTURE;
96 }
97 return 0;
98}
99
Stephen Warren712fbcf2011-10-18 11:11:49 +0000100static void image_set_header(void *ptr, struct stat *sbuf, int ifd,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530101 struct mkimage_params *params)
102{
103 uint32_t checksum;
104
105 image_header_t * hdr = (image_header_t *)ptr;
106
Stephen Warren712fbcf2011-10-18 11:11:49 +0000107 checksum = crc32(0,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530108 (const unsigned char *)(ptr +
109 sizeof(image_header_t)),
110 sbuf->st_size - sizeof(image_header_t));
111
112 /* Build new header */
Stephen Warren712fbcf2011-10-18 11:11:49 +0000113 image_set_magic(hdr, IH_MAGIC);
114 image_set_time(hdr, sbuf->st_mtime);
115 image_set_size(hdr, sbuf->st_size - sizeof(image_header_t));
116 image_set_load(hdr, params->addr);
117 image_set_ep(hdr, params->ep);
118 image_set_dcrc(hdr, checksum);
119 image_set_os(hdr, params->os);
120 image_set_arch(hdr, params->arch);
121 image_set_type(hdr, params->type);
122 image_set_comp(hdr, params->comp);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530123
Stephen Warren712fbcf2011-10-18 11:11:49 +0000124 image_set_name(hdr, params->imagename);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530125
Stephen Warren712fbcf2011-10-18 11:11:49 +0000126 checksum = crc32(0, (const unsigned char *)hdr,
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530127 sizeof(image_header_t));
128
Stephen Warren712fbcf2011-10-18 11:11:49 +0000129 image_set_hcrc(hdr, checksum);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530130}
131
132/*
133 * Default image type parameters definition
134 */
135static struct image_type_params defimage_params = {
136 .name = "Default Image support",
137 .header_size = sizeof(image_header_t),
138 .hdr = (void*)&header,
139 .check_image_type = image_check_image_types,
140 .verify_header = image_verify_header,
141 .print_header = image_print_contents,
142 .set_header = image_set_header,
143 .check_params = image_check_params,
144};
145
Stephen Warren712fbcf2011-10-18 11:11:49 +0000146void init_default_image_type(void)
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530147{
Stephen Warren712fbcf2011-10-18 11:11:49 +0000148 mkimage_register(&defimage_params);
Prafulla Wadaskar89a4d6b2009-08-19 17:36:46 +0530149}