1 /* This little program is my try to provide information about the
2 EtherBoot rom via environment variables to a batch file. This
3 could be done better, I think, but it works...
4 The program compiles with Borland C 3.1; other versions not tested.
5 The C code for setting the environment variables I got from an
6 archive, it was written by Richard Marks <rmarks@KSP.unisys.COM>.
7 ROMID is written by Guenter Knauf <eflash@gmx.net>
10 #define VDATE "2003-08-24"
17 #define ROMSTART 0xC8000
18 #define ROMEND 0xE8000
19 #define ROMINCREMENT 0x00800
20 #define ROMMASK 0x03FFF
24 int settheenv(char *symbol, char *val);
26 static int rom_scan(const unsigned char huge *rom,long offset,long len) {
33 if (rom[offset] != 0x55 || rom[offset+1] != 0xAA)
36 size = (long)rom[offset+2]*512L;
38 printf("Found ROM header at %04lX:0000; announces %ldk image\n", offset/16,(size+512)/1024);
40 printf(" This is a unusual position; not all BIOSs might find it.\n"
41 " Try to move to a 16kB boundary.\n");
43 printf(" This image extends beyond %04X:0000. It clashes with the system BIOS\n", ROMEND/16);
48 for (i=0; i<64; i++) {
49 if (rom[offset+size-3-i] == 0xff)
55 val[j] = rom[offset+size-3-i+j];
60 if (strstr(val, "therboot") == NULL)
64 printf("ROM Signature '%s'\n", val);
65 if ((rptr = strstr(val, "rom")) != NULL) {
72 while (!(rptr[0] == 0x20 || rptr < val)) {
78 strncpy(romid, rptr, i);
81 printf("ROM Driver ID '%s'\n", romid);
82 strcpy(symbol, "ROMID");
83 if (settheenv(symbol, romid))
84 printf("Error setting evironment var %s with value %s\n", symbol, romid);
87 printf("Couldnt find driver name!\n");
90 if (rom[offset+0x1C] == 'P' && rom[offset+0x1D] == 'C' && rom[offset+0x1E] == 'I') {
91 sprintf(val, "%02X%02X:%02X%02X", rom[offset+0x21], rom[offset+0x20],
92 rom[offset+0x23], rom[offset+0x22]);
94 printf("ROM Vendor ID '%s'\n", val);
95 strcpy(symbol, "PCIID");
96 if (settheenv(symbol, val))
97 printf("Error setting evironment var %s with value %s\n", symbol, val);
102 /* **************** main stuff **************** */
103 int main (int argc, char *argv[]) {
106 printf("\nROM-ID for Etherboot v%s (c) G. Knauf %s\n", VERSION, VDATE);
108 /* parse input parameters */
109 for (argc--, argv++; *argv; argc--, argv++) {
110 if ((strnicmp (*argv, "-", 1) == 0) || (strnicmp (*argv, "/", 1) == 0)) {
111 if ((strnicmp (*argv, "-V", 2) == 0) || (strnicmp (*argv, "/V", 2) == 0)) {
114 printf("Usage: %s [-v]\n");
119 for (i = ROMEND; (i -= ROMINCREMENT) >= ROMSTART;)
120 if (rom_scan(0,i,ROMEND-i))