1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Iru Cai <mytbk920423@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdio.h>
#include <stdlib.h>
static void usage(const char *s)
{
printf("%s <rom file> <fw1> <fw2> <fw1 offset> <fw2 offset>\n", s);
exit(1);
}
static void FseekEnd(FILE *fp, long o)
{
if (fseek(fp, o, SEEK_END) != 0) {
puts("fseek() error!\n");
exit(1);
}
}
int main(int argc, char *argv[])
{
if (argc < 6)
usage(argv[0]);
FILE *fp = fopen(argv[1], "rb+");
FILE *fw1 = fopen(argv[2], "rb");
FILE *fw2 = fopen(argv[3], "rb");
long offset1 = strtol(argv[4], NULL, 0);
long offset2 = strtol(argv[5], NULL, 0);
if (fp == NULL || fw1 == NULL || fw2 == NULL) {
puts("Error opening file!");
exit(1);
}
if ((offset1 & 0xff) || (offset2 & 0xff)) {
puts("The offsets must be aligned to 0x100");
exit(1);
}
long romsz;
FseekEnd(fp, -1);
romsz = ftell(fp) + 1;
printf("size of %s: 0x%lx\n", argv[1], romsz);
if (romsz & 0xff) {
puts("The ROM size must be multiple of 0x100");
exit(1);
}
if (offset1 > 0)
offset1 = offset1 - romsz;
if (offset2 > 0)
offset2 = offset2 - romsz;
/* write two offsets to $s-0x100 */
char offs[8];
long os;
os = 0x1000000 + offset1;
offs[0] = os >> 16;
offs[1] = os >> 8;
offs[2] = 0xff - offs[0];
offs[3] = 0xff - offs[1];
os = 0x1000000 + offset2;
offs[4] = os >> 16;
offs[5] = os >> 8;
offs[6] = 0xff - offs[4];
offs[7] = 0xff - offs[5];
for (size_t i = 0; i < 8; i++) {
printf("%02hhx ", offs[i]);
}
puts("");
FseekEnd(fp, -0x100);
printf("writing to 0x%lx\n", ftell(fp));
fwrite(offs, 1, 8, fp);
/* write fw1 and fw2 */
char c;
FseekEnd(fp, offset1);
printf("writing to 0x%lx\n", ftell(fp));
while (fread(&c, 1, 1, fw1) == 1) {
fwrite(&c, 1, 1, fp);
}
FseekEnd(fp, offset2);
printf("writing to 0x%lx\n", ftell(fp));
while (fread(&c, 1, 1, fw2) == 1) {
fwrite(&c, 1, 1, fp);
}
fclose(fp);
fclose(fw1);
fclose(fw2);
return 0;
}
|
