[x86] change default kernel to 2.6.32.8, remove block2mtd patch until it is fixed
[openwrt.git] / target / linux / ar7 / src / adam2patcher.c
1 /*
2 * patcher.c - ADAM2 patcher for Netgear DG834 (and compatible)
3 *
4 * Copyright (C) 2006 Felix Fietkau
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17 #include <stdio.h>
18 #include <stdlib.h>
19 #include <stddef.h>
20 #include <unistd.h>
21 #include <fcntl.h>
22 #include <stdint.h>
23 #include <sys/mman.h>
24 #include <sys/stat.h>
25 #include <string.h>
26
27 #include <sys/ioctl.h>
28
29 int main(int argc, char **argv)
30 {
31 int fd;
32 char *ptr;
33 uint32_t *i;
34
35 if (argc != 2) {
36 fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
37 exit(1);
38 }
39
40 if (((fd = open(argv[1], O_RDWR)) < 0)
41 || ((ptr = mmap(0, 128 * 1024, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1))) {
42 fprintf(stderr, "Can't open file\n");
43 exit(1);
44 }
45
46 i = (uint32_t *) &ptr[0x3944];
47 if (*i == 0x0c000944) {
48 fprintf(stderr, "Unpatched ADAM2 detected. Patching... ");
49 *i = 0x00000000;
50 msync(i, sizeof(*i), MS_SYNC|MS_INVALIDATE);
51 fprintf(stderr, "done!\n");
52 } else if (*i == 0x00000000) {
53 fprintf(stderr, "Patched ADAM2 detected.\n");
54 } else {
55 fprintf(stderr, "Unknown ADAM2 detected. Can't patch!\n");
56 }
57
58 close(fd);
59 }
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