xref: /minix3/sys/arch/i386/stand/lib/getsecs.c (revision 58a2b0008e28f606a7f7f5faaeaba4faac57a1ea) 
1 /*	$NetBSD: getsecs.c,v 1.4 2009/01/12 11:32:44 tsutsui Exp $	*/
2 
3 /* extracted from netbsd:sys/arch/i386/netboot/misc.c */
4 
5 #include <sys/types.h>
6 
7 #include <lib/libsa/stand.h>
8 #include <lib/libsa/net.h>
9 
10 #include "libi386.h"
11 
12 static inline u_long bcd2dec(u_long);
13 
14 static inline u_long
bcd2dec(u_long arg)15 bcd2dec(u_long arg)
16 {
17 	return (arg >> 4) * 10 + (arg & 0x0f);
18 }
19 
20 satime_t
getsecs(void)21 getsecs(void) {
22 	/*
23 	 * Return the current time in seconds
24 	 */
25 
26 	u_long t;
27 	satime_t sec;
28 
29 	if (biosgetrtc(&t))
30 		panic("RTC invalid");
31 
32 	sec = bcd2dec(t & 0xff);
33 	sec *= 60;
34 	t >>= 8;
35 	sec += bcd2dec(t & 0xff);
36 	sec *= 60;
37 	t >>= 8;
38 	sec += bcd2dec(t & 0xff);
39 
40 	return sec;
41 }
42