1 /* $NetBSD: devopen.c,v 1.3 2005/12/11 12:19:29 christos Exp $ */ 2 3 4 #include <sys/types.h> 5 #include <machine/mon.h> 6 7 #include <stand.h> 8 #include "libsa.h" 9 10 /* 11 * Open the device named by the combined device/file name 12 * given as the "fname" arg, something like: "sd()netbsd" 13 * 14 * However, Sun PROMs don't really let you choose which 15 * device you will talk to. You can only open the device 16 * that was used to load the boot program. Therefore, we 17 * do not accept a "device" part in the "fname" string. 18 * Pass the PROM device name to open in case it needs it. 19 */ 20 int 21 devopen(struct open_file *f, const char *fname, char **file) 22 { 23 struct devsw *dp; 24 int error; 25 26 *file = (char*)fname; 27 dp = &devsw[0]; 28 f->f_dev = dp; 29 error = (*dp->dv_open)(f, prom_bootdev); 30 31 return (error); 32 } 33