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/* This little program is my try to provide information about the
EtherBoot rom via environment variables to a batch file. This
could be done better, I think, but it works...
The program compiles with Borland C 3.1; other versions not tested.
The C code for setting the environment variables I got from an
archive, it was written by Richard Marks <rmarks@KSP.unisys.COM>.
ROMID is written by Guenter Knauf <eflash@gmx.net>
*/
#define VERSION "0.6"
#define VDATE "2003-08-24"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define ROMSTART 0xC8000
#define ROMEND 0xE8000
#define ROMINCREMENT 0x00800
#define ROMMASK 0x03FFF
int verbose = 0;
int settheenv(char *symbol, char *val);
static int rom_scan(const unsigned char huge *rom,long offset,long len) {
long size,i,j;
char symbol[16];
char val[64];
char romid[64];
char *rptr;
if (rom[offset] != 0x55 || rom[offset+1] != 0xAA)
return 0;
size = (long)rom[offset+2]*512L;
if (verbose) {
printf("Found ROM header at %04lX:0000; announces %ldk image\n", offset/16,(size+512)/1024);
if (offset & ROMMASK)
printf(" This is a unusual position; not all BIOSs might find it.\n"
" Try to move to a 16kB boundary.\n");
if (size > len) {
printf(" This image extends beyond %04X:0000. It clashes with the system BIOS\n", ROMEND/16);
size = len;
}
}
for (i=0; i<64; i++) {
if (rom[offset+size-3-i] == 0xff)
break;
}
if (20<i && i<63) {
i--;
for (j=0; j<i; j++)
val[j] = rom[offset+size-3-i+j];
val[i] = 0;
} else
return 0;
if (strstr(val, "therboot") == NULL)
return 0;
if (verbose)
printf("ROM Signature '%s'\n", val);
if ((rptr = strstr(val, "rom")) != NULL) {
for (i=1; i<4; i++) {
rptr--;
if (rptr[0] == 0x2E)
break;
}
i = 0;
while (!(rptr[0] == 0x20 || rptr < val)) {
i++;
rptr--;
}
rptr++;
i--;
strncpy(romid, rptr, i);
romid[i] = 0;
if (verbose)
printf("ROM Driver ID '%s'\n", romid);
strcpy(symbol, "ROMID");
if (settheenv(symbol, romid))
printf("Error setting evironment var %s with value %s\n", symbol, romid);
} else {
if (verbose)
printf("Couldnt find driver name!\n");
return 0;
}
if (rom[offset+0x1C] == 'P' && rom[offset+0x1D] == 'C' && rom[offset+0x1E] == 'I') {
sprintf(val, "%02X%02X:%02X%02X", rom[offset+0x21], rom[offset+0x20],
rom[offset+0x23], rom[offset+0x22]);
if (verbose)
printf("ROM Vendor ID '%s'\n", val);
strcpy(symbol, "PCIID");
if (settheenv(symbol, val))
printf("Error setting evironment var %s with value %s\n", symbol, val);
}
return 1;
}
/* **************** main stuff **************** */
int main (int argc, char *argv[]) {
long i;
printf("\nROM-ID for Etherboot v%s (c) G. Knauf %s\n", VERSION, VDATE);
if (argc > 1) {
/* parse input parameters */
for (argc--, argv++; *argv; argc--, argv++) {
if ((strnicmp (*argv, "-", 1) == 0) || (strnicmp (*argv, "/", 1) == 0)) {
if ((strnicmp (*argv, "-V", 2) == 0) || (strnicmp (*argv, "/V", 2) == 0)) {
verbose = 1;
} else {
printf("Usage: %s [-v]\n");
}
}
}
}
for (i = ROMEND; (i -= ROMINCREMENT) >= ROMSTART;)
if (rom_scan(0,i,ROMEND-i))
break;
return 0;
}
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