sys/arch/i386/stand/lib/getsecs.c

   1 /*      $NetBSD: getsecs.c,v 1.3 2008/12/14 17:03:43 christos 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
  15 bcd2dec(u_long arg)
  16 {
  17         return (arg >> 4) * 10 + (arg & 0x0f);
  18 }
  19
  20 satime_t
  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 }