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      1 /*	$NetBSD: clock.c,v 1.5 2014/11/20 16:34:25 christos Exp $	*/
      2 
      3 /*
      4  * This is a slightly modified version of mvme68k's standalone clock.c.
      5  * As there was no attribution/copyright header on that file, there's
      6  * not going to be one for this file.
      7  */
      8 
      9 #include <sys/types.h>
     10 #include <dev/clock_subr.h>
     11 
     12 #include "stand.h"
     13 #include "net.h"
     14 #include "libsa.h"
     15 #include "bugsyscalls.h"
     16 
     17 #define YEAR0		68
     18 
     19 /*
     20  * This code is defunct after 2068.
     21  * Will Unix still be here then??
     22  */
     23 const short dayyr[12] =
     24 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
     25 
     26 static u_long
     27 chiptotime(int sec, int min, int hour, int day, int mon, int year)
     28 {
     29 	int days, yr;
     30 
     31 	sec = bcdtobin(sec);
     32 	min = bcdtobin(min);
     33 	hour = bcdtobin(hour);
     34 	day = bcdtobin(day);
     35 	mon = bcdtobin(mon);
     36 	year = bcdtobin(year) + YEAR0;
     37 	if (year < 70)
     38 		year = 70;
     39 
     40 	/* simple sanity checks */
     41 	if (year < 70 || mon < 1 || mon > 12 || day < 1 || day > 31)
     42 		return (0);
     43 	days = 0;
     44 	for (yr = 70; yr < year; yr++)
     45 		days += days_per_year(yr);
     46 	days += dayyr[mon - 1] + day - 1;
     47 	if (is_leap_year(yr) && mon > 2)
     48 		days++;
     49 	/* now have days since Jan 1, 1970; the rest is easy... */
     50  	return days * SECS_PER_DAY + hour * SECS_PER_HOUR
     51 	    + min * SECS_PER_MINUTE + sec;
     52 }
     53 
     54 satime_t
     55 getsecs(void)
     56 {
     57 	struct bug_rtc_rd rr;
     58 
     59 	bugsys_rtc_rd(&rr);
     60 
     61 	return (chiptotime(rr.rr_second, rr.rr_minute, rr.rr_hour,
     62 	    rr.rr_dayofmonth, rr.rr_month, rr.rr_year));
     63 }
     64