/*
* 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__ */
