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