diff options
Diffstat (limited to 'c/src/lib/libbsp/i386/go32/clock/rtc.c')
| -rw-r--r-- | c/src/lib/libbsp/i386/go32/clock/rtc.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/c/src/lib/libbsp/i386/go32/clock/rtc.c b/c/src/lib/libbsp/i386/go32/clock/rtc.c deleted file mode 100644 index 38e9497000..0000000000 --- a/c/src/lib/libbsp/i386/go32/clock/rtc.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * $Id$ - */ - -#define IO_RTC 0x70 /* RTC */ - -#define RTC_SEC 0x00 /* seconds */ -#define RTC_SECALRM 0x01 /* seconds alarm */ -#define RTC_MIN 0x02 /* minutes */ -#define RTC_MINALRM 0x03 /* minutes alarm */ -#define RTC_HRS 0x04 /* hours */ -#define RTC_HRSALRM 0x05 /* hours alarm */ -#define RTC_WDAY 0x06 /* week day */ -#define RTC_DAY 0x07 /* day of month */ -#define RTC_MONTH 0x08 /* month of year */ -#define RTC_YEAR 0x09 /* month of year */ -#define RTC_STATUSA 0x0a /* status register A */ -#define RTCSA_TUP 0x80 /* time update, don't look now */ - -#define RTC_STATUSB 0x0b /* status register B */ - -#define RTC_INTR 0x0c /* status register C (R) interrupt source */ -#define RTCIR_UPDATE 0x10 /* update intr */ -#define RTCIR_ALARM 0x20 /* alarm intr */ -#define RTCIR_PERIOD 0x40 /* periodic intr */ -#define RTCIR_INT 0x80 /* interrupt output signal */ - -#define RTC_STATUSD 0x0d /* status register D (R) Lost Power */ -#define RTCSD_PWR 0x80 /* clock lost power */ - -#define RTC_DIAG 0x0e /* status register E - bios diagnostic */ -#define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time" - -#define RTC_CENTURY 0x32 /* current century - increment in Dec99 */ - - - -#include <rtems.h> -#include <string.h> - -void init_rtc( void ) -{ - int s; - - /* initialize brain-dead battery powered clock */ - outport_byte( IO_RTC, RTC_STATUSA ); - outport_byte( IO_RTC+1, 0x26 ); - outport_byte( IO_RTC, RTC_STATUSB ); - outport_byte( IO_RTC+1, 2 ); - - outport_byte( IO_RTC, RTC_DIAG ); - inport_byte( IO_RTC+1, s ); -#if 0 - if (s) printf("RTC BIOS diagnostic error %b\n", s, RTCDG_BITS); -#endif -} - - -/* convert 2 digit BCD number */ -static int bcd( unsigned int i ) -{ - return ((i/16)*10 + (i%16)); -} - -/* convert years to seconds (from 1970) */ -static unsigned long ytos( int y ) -{ - int i; - unsigned long ret; - - ret = 0; - for(i = 1970; i < y; i++) { - if (i % 4) ret += 365*24*60*60; - else ret += 366*24*60*60; - } - return ret; -} - -/* convert months to seconds */ -static unsigned long mtos( int m, int leap ) -{ - int i; - unsigned long ret; - - ret = 0; - for(i=1;i<m;i++) { - switch(i){ - case 1: case 3: case 5: case 7: case 8: case 10: case 12: - ret += 31*24*60*60; - break; - case 4: case 6: case 9: case 11: - ret += 30*24*60*60; - break; - case 2: - if (leap) - ret += 29*24*60*60; - else - ret += 28*24*60*60; - } - } - return ret; -} - - -static inline unsigned int rtcin( unsigned int what ) -{ - unsigned int r; - outport_byte( IO_RTC, what ); - inport_byte( IO_RTC+1, r ); - return r; -} - - -/* - * Initialize the time of day register, based on the time base which is, e.g. - * from a filesystem. - */ -long rtc_read( rtems_time_of_day * tod ) -{ - int sa; - unsigned long sec = 0; - - memset( tod, 0, sizeof *tod ); - - /* do we have a realtime clock present? (otherwise we loop below) */ - sa = rtcin(RTC_STATUSA); - if (sa == 0xff || sa == 0) - return -1; - - /* ready for a read? */ - while ((sa&RTCSA_TUP) == RTCSA_TUP) - sa = rtcin(RTC_STATUSA); - - tod->year = bcd(rtcin(RTC_YEAR)) + 1900; /* year */ - if (tod->year < 1970) tod->year += 100; - tod->month = bcd(rtcin(RTC_MONTH)); /* month */ - tod->day = bcd(rtcin(RTC_DAY)); /* day */ - (void) bcd(rtcin(RTC_WDAY)); /* weekday */ - tod->hour = bcd(rtcin(RTC_HRS)); /* hour */ - tod->minute = bcd(rtcin(RTC_MIN)); /* minutes */ - tod->second = bcd(rtcin(RTC_SEC)); /* seconds */ - tod->ticks = 0; -#if 0 - sec = ytos( tod->year ); - sec += mtos( tod->month, tod->year % 4 == 0 ); - sec += tod->day * 24*60*60; - sec += tod->hour * 60*60; /* hour */ - sec += tod->minute * 60; /* minutes */ - sec += tod->second; /* seconds */ -#else - sec = 0; -#endif - return sec; -} - - - -/* from djgpp: include before rtems.h to avoid conflicts */ -#undef delay -#include <dos.h> - -void rtc_set_dos_date( void ) -{ - int s; - struct date date; - struct time time; - - /* initialize brain-dead battery powered clock */ - outport_byte( IO_RTC, RTC_STATUSA ); - outport_byte( IO_RTC+1, 0x26 ); - outport_byte( IO_RTC, RTC_STATUSB ); - outport_byte( IO_RTC+1, 2 ); - - outport_byte( IO_RTC, RTC_DIAG ); - inport_byte( IO_RTC+1, s ); - if (s) { -#if 0 - printf("RTC BIOS diagnostic error %b\n", s, RTCDG_BITS); -#else - return; -#endif - } - - /* check for presence of clock */ - s = rtcin(RTC_STATUSA); - if ( s == 0xff || s == 0 ) { -#if 0 - printf( "Real-time clock not found\n" ); -#endif - return; - } - - /* ready for a read? */ - while ((s & RTCSA_TUP) == RTCSA_TUP) - s = rtcin(RTC_STATUSA); - - date.da_year = bcd(rtcin(RTC_YEAR)) + 1900; /* year */ - if ( date.da_year < 1970) date.da_year += 100; - date.da_year -= 1980; - date.da_mon = bcd(rtcin(RTC_MONTH)); /* month */ - date.da_day = bcd(rtcin(RTC_DAY)); /* day */ - - (void)bcd(rtcin(RTC_WDAY)); /* weekday */ - - time.ti_hour = bcd(rtcin(RTC_HRS)); /* hour */ - time.ti_min = bcd(rtcin(RTC_MIN)); /* minutes */ - time.ti_sec = bcd(rtcin(RTC_SEC)); /* seconds */ - time.ti_hund = 0; - - setdate( & date ); - settime( & time ); -} |