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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
amsinfo - a tool for examining AMS firmware files
Copyright (C) Dave Chapman 2007
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; either version 2 of the License, or
(at your option) any later version.
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
/* Win32 compatibility */
#ifndef O_BINARY
#define O_BINARY 0
#endif
#define PAD_TO_BOUNDARY(x) ((x) + 0x1ff) & ~0x1ff;
static off_t filesize(int fd) {
struct stat buf;
if (fstat(fd,&buf) < 0) {
perror("[ERR] Checking filesize of input file");
return -1;
} else {
return(buf.st_size);
}
}
static uint32_t get_uint32le(unsigned char* p)
{
return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
}
static uint16_t get_uint16le(unsigned char* p)
{
return p[0] | (p[1] << 8);
}
static int calc_checksum(unsigned char* buf, int n)
{
int sum = 0;
int i;
for (i=0;i<n;i+=4)
sum += get_uint32le(buf + 0x400 + i);
return sum;
}
static void dump_header(unsigned char* buf, int i)
{
printf("0x%08x:\n",i);
printf(" HEADER: 0x%08x\n",i);
printf(" FirmwareHeaderIndex: 0x%08x\n",get_uint32le(&buf[i]));
printf(" FirmwareChecksum: 0x%08x\n",get_uint32le(&buf[i+0x04]));
printf(" CodeBlockSizeMultiplier: 0x%08x\n",get_uint32le(&buf[i+0x08]));
printf(" FirmwareSize: 0x%08x\n",get_uint32le(&buf[i+0x0c]));
printf(" Unknown1: 0x%08x\n",get_uint32le(&buf[i+0x10]));
printf(" ModelID: 0x%04x\n",get_uint16le(&buf[i+0x14]));
printf(" Unknown2: 0x%04x\n",get_uint16le(&buf[i+0x16]));
}
static int dump_lib(unsigned char* buf, int i)
{
int export_count;
int size;
int unknown1;
int baseaddr, endaddr;
baseaddr = get_uint32le(&buf[i+0x04]);
endaddr = get_uint32le(&buf[i+0x08]);
size = get_uint32le(&buf[i+0x0c]);
unknown1 = get_uint32le(&buf[i+0x10]);
export_count = get_uint32le(&buf[i+0x14]);
printf("0x%08x: \"%s\" 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",i, buf + i + get_uint32le(&buf[i]),baseaddr,endaddr,size,unknown1,export_count);
#if 0
if (export_count > 1) {
for (j=0;j<export_count;j++) {
printf(" Exports[%02d]: 0x%08x\n",j,get_uint32le(&buf[i+0x18+4*j]));
}
}
#endif
return PAD_TO_BOUNDARY(size);
}
int main(int argc, char* argv[])
{
int fd;
off_t len;
int n;
unsigned char* buf;
int firmware_size;
int i;
if (argc != 2) {
fprintf(stderr,"USAGE: amsinfo firmware.bin\n");
return 1;
}
fd = open(argv[1],O_RDONLY|O_BINARY);
if ((len = filesize(fd)) < 0)
return 1;
if ((buf = malloc(len)) == NULL) {
fprintf(stderr,"[ERR] Could not allocate buffer for input file (%d bytes)\n",(int)len);
return 1;
}
n = read(fd, buf, len);
if (n != len) {
fprintf(stderr,"[ERR] Could not read file\n");
return 1;
}
close(fd);
/* Now we dump the firmware structure */
dump_header(buf,0); /* First copy of header block */
// dump_header(buf,0x200); /* Second copy of header block */
firmware_size = get_uint32le(&buf[0x0c]);
printf("Calculated firmware checksum: 0x%08x\n",calc_checksum(buf,firmware_size));
/* Round size up to next multiple of 0x200 */
firmware_size = PAD_TO_BOUNDARY(firmware_size);
i = firmware_size + 0x400;
printf("LIBRARY BLOCKS:\n");
printf("Offset Name BaseAddr EndAddr BlockSize Unknown1 EntryCount\n");
while (get_uint32le(&buf[i]) != 0xffffffff)
{
i += dump_lib(buf,i);
while (get_uint32le(&buf[i]) == 0xefbeadde)
i+=4;
}
printf("0x%08x: PADDING BLOCK\n",i);
return 0;
}
|
