source: SVN/rincon/u-boot/board/netstar/crcit.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.2 KB
Line 
1/*
2 * (C) Copyright 2005
3 * 2N Telekomunikace, Ladislav Michl <michl@2n.cz>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <stdio.h>
25#include <stdlib.h>
26#include <stdint.h>
27#include <fcntl.h>
28#include <string.h>
29#include <unistd.h>
30#include <sys/types.h>
31#include <sys/stat.h>
32#include "crcek.h"
33
34extern unsigned long crc32(unsigned long, const unsigned char *, unsigned int);
35
36uint32_t data[LOADER_SIZE/4 + 3];
37
38int doit(char *path, unsigned version)
39{
40        uint32_t *p;
41        ssize_t size;
42        int fd;
43
44        fd = open(path, O_RDONLY);
45        if (fd == -1) {
46                perror("Error opening file");
47                return EXIT_FAILURE;
48        }
49        p = data + 2;
50        size = read(fd, p, LOADER_SIZE + 4);
51        if (size == -1) {
52                perror("Error reading file");
53                return EXIT_FAILURE;
54        }
55        if (size > LOADER_SIZE) {
56                fprintf(stderr, "File too large\n");
57                return EXIT_FAILURE;
58        }
59        size = (((size - 1) >> 2) + 1) << 2;
60        data[0] = size + 4;     /* add size of version field */
61        data[1] = version;
62        data[(size >> 2) + 2] = crc32(0, (unsigned char *)(data + 1), data[0]);
63        close(fd);
64
65        if (write(STDOUT_FILENO, data, size + 3*4) == -1) {
66                perror("Error writing file");
67                return EXIT_FAILURE;
68        }
69
70        return EXIT_SUCCESS;
71}
72
73int main(int argc, char **argv)
74{
75        if (argc == 2) {
76                return doit(argv[1], 0);
77        } else if ((argc == 4) && (strcmp(argv[1], "-v") == 0)) {
78                char *endptr, *nptr = argv[2];
79                unsigned ver = strtoul(nptr, &endptr, 0);
80                if (*nptr != '\0' && *endptr == '\0')
81                        return doit(argv[3], ver);
82        }
83        fprintf(stderr, "Usage: crcit [-v version] <image>\n");
84
85        return EXIT_FAILURE;
86}
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