/* * 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__ */