CODE EXAMPLE 3-6 Sample User Flash Application Program (Continued)
if ((fd0 = open(devname0, O_RDWR)) < 0) { fprintf(stderr, "couldn’t open device: %s\n", devname0); exit(1);
}
/* set the default PROM */ prom_id = 0;
fd = fd0;
/* let them know about the help menu */
fprintf(stderr, "Enter <h> or <?> for help on commands\n");
while (1) {
fprintf(stderr, "[%d]command> ", prom_id);
switch(get_cmd()) { case ’q’:
goto getout;
case ’h’: case ’?’: h = 0;
while (*help[h]){
fprintf(stderr, " %s\n", help[h]); h++;
}
break;
case ’6’: /* erase flash PROM block */ fprintf(stderr,
"Enter PROM block number[0, 56]> "); scanf ("%d", &uflash_if.blk_num);
fprintf(stderr,
"Enter number of block> "); scanf ("%d", &uflash_if.num_of_blks);
if (ioctl(fd, UIOCEBLK, &uflash_if) ==
break; |
|
case ’5’: | /* clear all locks */ |
if (ioctl(fd, UIOCCLCK, &uflash_if) ==
break;
Chapter 3 User Flash 55
