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
chiptotime(int sec,int min,int hour,int day,int mon,int year)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
getsecs(void)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