/* 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; }