Merge branch 'sr@denx.de' of git://git.denx.de/u-boot-staging
[platform/kernel/u-boot.git] / 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             (type == IH_TYPE_KERNEL_NOLOAD))
40                 return EXIT_SUCCESS;
41         else
42                 return EXIT_FAILURE;
43 }
44
45 static int image_check_params(struct mkimage_params *params)
46 {
47         return  ((params->dflag && (params->fflag || params->lflag)) ||
48                 (params->fflag && (params->dflag || params->lflag)) ||
49                 (params->lflag && (params->dflag || params->fflag)));
50 }
51
52 static int image_verify_header(unsigned char *ptr, int image_size,
53                         struct mkimage_params *params)
54 {
55         uint32_t len;
56         const unsigned char *data;
57         uint32_t checksum;
58         image_header_t header;
59         image_header_t *hdr = &header;
60
61         /*
62          * create copy of header so that we can blank out the
63          * checksum field for checking - this can't be done
64          * on the PROT_READ mapped data.
65          */
66         memcpy(hdr, ptr, sizeof(image_header_t));
67
68         if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) {
69                 fprintf(stderr,
70                         "%s: Bad Magic Number: \"%s\" is no valid image\n",
71                         params->cmdname, params->imagefile);
72                 return -FDT_ERR_BADMAGIC;
73         }
74
75         data = (const unsigned char *)hdr;
76         len  = sizeof(image_header_t);
77
78         checksum = be32_to_cpu(hdr->ih_hcrc);
79         hdr->ih_hcrc = cpu_to_be32(0);  /* clear for re-calculation */
80
81         if (crc32(0, data, len) != checksum) {
82                 fprintf(stderr,
83                         "%s: ERROR: \"%s\" has bad header checksum!\n",
84                         params->cmdname, params->imagefile);
85                 return -FDT_ERR_BADSTATE;
86         }
87
88         data = (const unsigned char *)ptr + sizeof(image_header_t);
89         len  = image_size - sizeof(image_header_t) ;
90
91         checksum = be32_to_cpu(hdr->ih_dcrc);
92         if (crc32(0, data, len) != checksum) {
93                 fprintf(stderr,
94                         "%s: ERROR: \"%s\" has corrupted data!\n",
95                         params->cmdname, params->imagefile);
96                 return -FDT_ERR_BADSTRUCTURE;
97         }
98         return 0;
99 }
100
101 static void image_set_header(void *ptr, struct stat *sbuf, int ifd,
102                                 struct mkimage_params *params)
103 {
104         uint32_t checksum;
105
106         image_header_t * hdr = (image_header_t *)ptr;
107
108         checksum = crc32(0,
109                         (const unsigned char *)(ptr +
110                                 sizeof(image_header_t)),
111                         sbuf->st_size - sizeof(image_header_t));
112
113         /* Build new header */
114         image_set_magic(hdr, IH_MAGIC);
115         image_set_time(hdr, sbuf->st_mtime);
116         image_set_size(hdr, sbuf->st_size - sizeof(image_header_t));
117         image_set_load(hdr, params->addr);
118         image_set_ep(hdr, params->ep);
119         image_set_dcrc(hdr, checksum);
120         image_set_os(hdr, params->os);
121         image_set_arch(hdr, params->arch);
122         image_set_type(hdr, params->type);
123         image_set_comp(hdr, params->comp);
124
125         image_set_name(hdr, params->imagename);
126
127         checksum = crc32(0, (const unsigned char *)hdr,
128                                 sizeof(image_header_t));
129
130         image_set_hcrc(hdr, checksum);
131 }
132
133 /*
134  * Default image type parameters definition
135  */
136 static struct image_type_params defimage_params = {
137         .name = "Default Image support",
138         .header_size = sizeof(image_header_t),
139         .hdr = (void*)&header,
140         .check_image_type = image_check_image_types,
141         .verify_header = image_verify_header,
142         .print_header = image_print_contents,
143         .set_header = image_set_header,
144         .check_params = image_check_params,
145 };
146
147 void init_default_image_type(void)
148 {
149         mkimage_register(&defimage_params);
150 }