root/sys/arch/i386/stand/lib/getsecs.c
/*      $NetBSD: getsecs.c,v 1.4 2009/01/12 11:32:44 tsutsui Exp $      */

/* extracted from netbsd:sys/arch/i386/netboot/misc.c */

#include <sys/types.h>

#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>

#include "libi386.h"

static inline u_long bcd2dec(u_long);

static inline u_long
bcd2dec(u_long arg)
{
        return (arg >> 4) * 10 + (arg & 0x0f);
}

satime_t
getsecs(void) {
        /*
         * Return the current time in seconds
         */

        u_long t;
        satime_t sec;

        if (biosgetrtc(&t))
                panic("RTC invalid");

        sec = bcd2dec(t & 0xff);
        sec *= 60;
        t >>= 8;
        sec += bcd2dec(t & 0xff);
        sec *= 60;
        t >>= 8;
        sec += bcd2dec(t & 0xff);

        return sec;
}