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48abe7bf WD |
1 | /* |
2 | * (C) Copyright 2000-2004 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * (C) Copyright 2003 | |
6 | * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de> | |
7 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
fd9bcaa3 | 27 | #if defined(CONFIG_CMD_XIMG) |
48abe7bf WD |
28 | |
29 | /* | |
30 | * Multi Image extract | |
31 | */ | |
32 | #include <common.h> | |
33 | #include <command.h> | |
34 | #include <image.h> | |
35 | #include <asm/byteorder.h> | |
36 | ||
37 | int | |
38 | do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
39 | { | |
40 | ulong addr = load_addr, dest = 0; | |
41 | ulong data, len, checksum; | |
42 | ulong *len_ptr; | |
43 | int i, verify, part = 0; | |
44 | char pbuf[10], *s; | |
45 | image_header_t header; | |
46 | ||
47 | s = getenv("verify"); | |
48 | verify = (s && (*s == 'n')) ? 0 : 1; | |
49 | ||
50 | if (argc > 1) { | |
51 | addr = simple_strtoul(argv[1], NULL, 16); | |
52 | } | |
53 | if (argc > 2) { | |
54 | part = simple_strtoul(argv[2], NULL, 16); | |
55 | } | |
56 | if (argc > 3) { | |
57 | dest = simple_strtoul(argv[3], NULL, 16); | |
58 | } | |
59 | ||
60 | printf("## Copying from image at %08lx ...\n", addr); | |
61 | ||
62 | /* Copy header so we can blank CRC field for re-calculation */ | |
63 | memmove(&header, (char *) addr, sizeof (image_header_t)); | |
64 | ||
65 | if (ntohl(header.ih_magic) != IH_MAGIC) { | |
66 | printf("Bad Magic Number\n"); | |
67 | return 1; | |
68 | } | |
69 | ||
70 | data = (ulong) & header; | |
71 | len = sizeof (image_header_t); | |
72 | ||
73 | checksum = ntohl(header.ih_hcrc); | |
74 | header.ih_hcrc = 0; | |
75 | ||
76 | if (crc32(0, (char *) data, len) != checksum) { | |
77 | printf("Bad Header Checksum\n"); | |
78 | return 1; | |
79 | } | |
80 | #ifdef DEBUG | |
81 | print_image_hdr((image_header_t *) addr); | |
82 | #endif | |
83 | ||
84 | data = addr + sizeof (image_header_t); | |
85 | len = ntohl(header.ih_size); | |
86 | ||
87 | if (header.ih_type != IH_TYPE_MULTI) { | |
88 | printf("Wrong Image Type for %s command\n", cmdtp->name); | |
89 | return 1; | |
90 | } | |
91 | ||
92 | if (header.ih_comp != IH_COMP_NONE) { | |
93 | printf("Wrong Compression Type for %s command\n", cmdtp->name); | |
94 | return 1; | |
95 | } | |
96 | ||
97 | if (verify) { | |
98 | printf(" Verifying Checksum ... "); | |
99 | if (crc32(0, (char *) data, len) != ntohl(header.ih_dcrc)) { | |
100 | printf("Bad Data CRC\n"); | |
101 | return 1; | |
102 | } | |
103 | printf("OK\n"); | |
104 | } | |
105 | ||
106 | len_ptr = (ulong *) data; | |
107 | ||
108 | data += 4; /* terminator */ | |
109 | for (i = 0; len_ptr[i]; ++i) { | |
110 | data += 4; | |
111 | if (argc > 2 && part > i) { | |
112 | u_long tail; | |
113 | len = ntohl(len_ptr[i]); | |
114 | tail = len % 4; | |
115 | data += len; | |
116 | if (tail) { | |
117 | data += 4 - tail; | |
118 | } | |
119 | } | |
120 | } | |
121 | if (argc > 2 && part >= i) { | |
122 | printf("Bad Image Part\n"); | |
123 | return 1; | |
124 | } | |
125 | len = ntohl(len_ptr[part]); | |
126 | ||
127 | if (argc > 3) { | |
128 | memcpy((char *) dest, (char *) data, len); | |
129 | } | |
130 | ||
131 | sprintf(pbuf, "%8lx", data); | |
132 | setenv("fileaddr", pbuf); | |
133 | sprintf(pbuf, "%8lx", len); | |
134 | setenv("filesize", pbuf); | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | U_BOOT_CMD(imxtract, 4, 1, do_imgextract, | |
140 | "imxtract- extract a part of a multi-image\n", | |
141 | "addr part [dest]\n" | |
142 | " - extract <part> from image at <addr> and copy to <dest>\n"); | |
143 | ||
fd9bcaa3 | 144 | #endif |