1 /* $NetBSD: clock.c,v 1.11 2014/11/20 16:34:25 christos Exp $ */
2
3 #include <sys/types.h>
4 #include <dev/clock_subr.h>
5 #include <machine/prom.h>
6
7 #include <lib/libsa/stand.h>
8 #include <lib/libsa/net.h>
9 #include "libsa.h"
10
11 /*
12 * BCD to decimal and decimal to BCD.
13 */
14 #define YEAR0 68
15
16 /*
17 * This code is defunct after 2068.
18 * Will Unix still be here then??
19 */
20 const short dayyr[12] =
21 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
22
23 u_long
chiptotime(int sec,int min,int hour,int day,int mon,int year)24 chiptotime(int sec, int min, int hour, int day, int mon, int year)
25 {
26 int days, yr;
27
28 sec = bcdtobin(sec);
29 min = bcdtobin(min);
30 hour = bcdtobin(hour);
31 day = bcdtobin(day);
32 mon = bcdtobin(mon);
33 year = bcdtobin(year) + YEAR0;
34 if (year < 70)
35 year = 70;
36
37 /* simple sanity checks */
38 if (year < 70 || mon < 1 || mon > 12 || day < 1 || day > 31)
39 return (0);
40 days = 0;
41 for (yr = 70; yr < year; yr++)
42 days += days_per_year(yr);
43 days += dayyr[mon - 1] + day - 1;
44 if (is_leap_year(yr) && mon > 2)
45 days++;
46 /* now have days since Jan 1, 1970; the rest is easy... */
47 return days * SECS_PER_DAY + hour * SECS_PER_HOUR
48 + min * SECS_PER_MINUTE + sec;
49 }
50
51 satime_t
getsecs(void)52 getsecs(void)
53 {
54 struct mvmeprom_time m;
55
56 mvmeprom_rtc_rd(&m);
57 return chiptotime(m.sec_BCD, m.min_BCD, m.hour_BCD, m.day_BCD,
58 m.month_BCD, m.year_BCD);
59 }
60