]> git.sur5r.net Git - u-boot/blob - tools/default_image.c
Merge branch 'master' of git://git.denx.de/u-boot-blackfin
[u-boot] / tools / default_image.c
1 /*
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
34 static image_header_t header;
35
36 static int image_check_image_types (uint8_t type)
37 {
38         if ((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT))
39                 return EXIT_SUCCESS;
40         else
41                 return EXIT_FAILURE;
42 }
43
44 static int image_check_params (struct mkimage_params *params)
45 {
46         return  ((params->dflag && (params->fflag || params->lflag)) ||
47                 (params->fflag && (params->dflag || params->lflag)) ||
48                 (params->lflag && (params->dflag || params->fflag)));
49 }
50
51 static int image_verify_header (unsigned char *ptr, int image_size,
52                         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          */
65         memcpy (hdr, ptr, sizeof(image_header_t));
66
67         if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
68                 fprintf (stderr,
69                         "%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
80         if (crc32 (0, data, len) != checksum) {
81                 fprintf (stderr,
82                         "%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);
91         if (crc32 (0, data, len) != checksum) {
92                 fprintf (stderr,
93                         "%s: ERROR: \"%s\" has corrupted data!\n",
94                         params->cmdname, params->imagefile);
95                 return -FDT_ERR_BADSTRUCTURE;
96         }
97         return 0;
98 }
99
100 static void image_set_header (void *ptr, struct stat *sbuf, int ifd,
101                                 struct mkimage_params *params)
102 {
103         uint32_t checksum;
104
105         image_header_t * hdr = (image_header_t *)ptr;
106
107         checksum = crc32 (0,
108                         (const unsigned char *)(ptr +
109                                 sizeof(image_header_t)),
110                         sbuf->st_size - sizeof(image_header_t));
111
112         /* Build new header */
113         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);
123
124         image_set_name (hdr, params->imagename);
125
126         checksum = crc32 (0, (const unsigned char *)hdr,
127                                 sizeof(image_header_t));
128
129         image_set_hcrc (hdr, checksum);
130 }
131
132 /*
133  * Default image type parameters definition
134  */
135 static 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
146 void init_default_image_type (void)
147 {
148         mkimage_register (&defimage_params);
149 }