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 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 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