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
|
/*
* readutil.c - perform various control ops on the 3c509b bios rom
*
*/
#ifndef __i386__
# error "This program can't compile or run on non-intel computers"
#else
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef __FreeBSD__
#include <fcntl.h>
#include <machine/cpufunc.h>
#define OUTB(data, port) outb(port, data)
#define OUTW(data, port) outw(port, data)
#define OUTL(data, port) outl(port, data)
#else
#include <sys/io.h>
#define OUTB(data, port) outb(data, port)
#define OUTW(data, port) outw(data, port)
#define OUTL(data, port) outl(data, port)
#endif
int main(int argc, char **argv)
{
unsigned int i, j, n;
unsigned int ioaddr;
unsigned long recvrstat;
unsigned char buf[128];
unsigned char b;
if (argc != 3) {
printf("Usage: romid ioaddr [erase|protect|unprotect|id|read >file|prog <file]\n");
exit(-1);
}
#ifdef __FreeBSD__
/* get permissions for in/out{blw} */
open("/dev/io",O_RDONLY,0);
#else
setuid(0); /* if we're setuid, do it really */
if (iopl(3)) {
perror("iopl()");
exit(1);
}
#endif
sscanf(argv[1],"%x",&ioaddr);
/* Set the register window to 3 for the 3c905b */
OUTW(0x803, ioaddr+0xe);
recvrstat = inl(ioaddr); /* save the receiver status */
/* set the receiver type to MII so the full bios rom address space
can be accessed */
OUTL((recvrstat & 0xf00fffff)|0x00600000, ioaddr);
/* Set the register window to 0 for the 3c905b */
OUTW(0x800, ioaddr+0xe);
if (strcmp(argv[2], "erase") == 0) {
/* do the funky chicken to erase the rom contents */
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0x80, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0x10, ioaddr+0x8);
printf("Bios ROM at %04x has been erased\n", ioaddr);
} else if (strcmp(argv[2], "protect") == 0) {
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0xa0, ioaddr+0x8);
printf("Software Data Protection for Bios ROM at %04x has been enabled\n",
ioaddr);
} else if (strcmp(argv[2], "unprotect") == 0) {
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0x80, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0x20, ioaddr+0x8);
printf("Software Data Protection for Bios ROM at %04x has been disabled\n",
ioaddr);
} else if (strcmp(argv[2], "id") == 0) {
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0x90, ioaddr+0x8);
/* 10ms delay needed */
printf("Manufacturer ID - ");
/* manuf. id */
OUTL(0x0000, ioaddr+0x4);
printf("%02x\n", inb(ioaddr+0x8));
/* device id */
OUTL(0x0001, ioaddr+0x4);
printf("Device ID - %02x\n", inb(ioaddr+0x8));
/* undo the funky chicken */
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0xf0, ioaddr+0x8);
} else if (strcmp(argv[2], "read") == 0) {
for (i = 0; i < 65536; i++) {
OUTL(i, ioaddr+0x4);
b = inb(ioaddr+0x8);
write(1, &b, 1);
}
} else if (strcmp(argv[2], "prog") == 0) {
/* program the rom in 128 bute chunks */
for (i = 0, n = 0; i < 65536; i += n) {
n = read(0, buf, 128);
if (n == 0)
break;
if (n < 0) {
perror("File Error");
exit(-3);
}
/* disable SDP temporarily for programming a sector */
OUTL(0x5555, ioaddr+0x4);
OUTB(0xaa, ioaddr+0x8);
OUTL(0x2aaa, ioaddr+0x4);
OUTB(0x55, ioaddr+0x8);
OUTL(0x5555, ioaddr+0x4);
OUTB(0xa0, ioaddr+0x8);
for (j = 0; j < n; j++) {
OUTL(i+j, ioaddr+0x4);
OUTB(buf[j], ioaddr+0x8);
}
/* wait for the programming of this sector to coomplete */
while (inb(ioaddr+0x8) != buf[j-1])
;
}
}
/* Set the register window to 3 for the 3c905b */
OUTW(0x803, ioaddr+0xe);
/* restore the receiver status */
OUTL(recvrstat, ioaddr);
return 0;
}
#endif /* __i386__ */
|
