mirror of
https://github.com/xcat2/xNBA.git
synced 2024-11-23 01:51:58 +00:00
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/*
|
|
* 3c905cutil.c - perform various control ops on the 3C905C bios rom
|
|
* which we assume to be an AT49BV512
|
|
*
|
|
*/
|
|
|
|
#ifndef __i386__
|
|
# error "This program can't compile or run on non-intel computers"
|
|
#else
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/io.h>
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
unsigned int ioaddr, i, n;
|
|
unsigned char b;
|
|
|
|
setuid(0); /* if we're setuid, do it really */
|
|
if (argc != 3) {
|
|
printf("Usage: romid ioaddr [erase|id|read >file|prog <file]\n");
|
|
exit(-1);
|
|
}
|
|
if (iopl(3)) {
|
|
perror("iopl()");
|
|
exit(1);
|
|
}
|
|
sscanf(argv[1],"%x",&ioaddr);
|
|
|
|
/* Set the register window to 0 for the 3C905C */
|
|
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);
|
|
sleep (1);
|
|
printf("Bios ROM at %04x has been erased\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) {
|
|
for (i = 0; i < 65536; i++) {
|
|
n = read(0, &b, 1);
|
|
if (n == 0)
|
|
break;
|
|
if (n < 0) {
|
|
perror("File Error");
|
|
exit(-3);
|
|
}
|
|
outl(0x5555, ioaddr+0x4);
|
|
outb(0xaa, ioaddr+0x8);
|
|
outl(0x2aaa, ioaddr+0x4);
|
|
outb(0x55, ioaddr+0x8);
|
|
outl(0x5555, ioaddr+0x4);
|
|
outb(0xA0, ioaddr+0x8);
|
|
outl(i, ioaddr+0x4);
|
|
outb(b, ioaddr+0x8);
|
|
while (inb(ioaddr+0x8) != b)
|
|
;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* __i386__ */
|