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