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89a4d6b1 PW |
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 | ||
712fbcf3 | 36 | static int image_check_image_types(uint8_t type) |
89a4d6b1 | 37 | { |
b9b50e89 SW |
38 | if (((type > IH_TYPE_INVALID) && (type < IH_TYPE_FLATDT)) || |
39 | (type == IH_TYPE_KERNEL_NOLOAD)) | |
89a4d6b1 PW |
40 | return EXIT_SUCCESS; |
41 | else | |
42 | return EXIT_FAILURE; | |
43 | } | |
44 | ||
712fbcf3 | 45 | static int image_check_params(struct mkimage_params *params) |
89a4d6b1 PW |
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 | ||
712fbcf3 | 52 | static int image_verify_header(unsigned char *ptr, int image_size, |
89a4d6b1 PW |
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 | */ | |
712fbcf3 | 66 | memcpy(hdr, ptr, sizeof(image_header_t)); |
89a4d6b1 PW |
67 | |
68 | if (be32_to_cpu(hdr->ih_magic) != IH_MAGIC) { | |
712fbcf3 | 69 | fprintf(stderr, |
89a4d6b1 PW |
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 | ||
712fbcf3 SW |
81 | if (crc32(0, data, len) != checksum) { |
82 | fprintf(stderr, | |
89a4d6b1 PW |
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); | |
712fbcf3 SW |
92 | if (crc32(0, data, len) != checksum) { |
93 | fprintf(stderr, | |
89a4d6b1 PW |
94 | "%s: ERROR: \"%s\" has corrupted data!\n", |
95 | params->cmdname, params->imagefile); | |
96 | return -FDT_ERR_BADSTRUCTURE; | |
97 | } | |
98 | return 0; | |
99 | } | |
100 | ||
712fbcf3 | 101 | static void image_set_header(void *ptr, struct stat *sbuf, int ifd, |
89a4d6b1 PW |
102 | struct mkimage_params *params) |
103 | { | |
104 | uint32_t checksum; | |
105 | ||
106 | image_header_t * hdr = (image_header_t *)ptr; | |
107 | ||
712fbcf3 | 108 | checksum = crc32(0, |
89a4d6b1 PW |
109 | (const unsigned char *)(ptr + |
110 | sizeof(image_header_t)), | |
111 | sbuf->st_size - sizeof(image_header_t)); | |
112 | ||
113 | /* Build new header */ | |
712fbcf3 SW |
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, | |
89a4d6b1 PW |
128 | sizeof(image_header_t)); |
129 | ||
712fbcf3 | 130 | image_set_hcrc(hdr, checksum); |
89a4d6b1 PW |
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 | ||
712fbcf3 | 147 | void init_default_image_type(void) |
89a4d6b1 | 148 | { |
712fbcf3 | 149 | mkimage_register(&defimage_params); |
89a4d6b1 | 150 | } |