time.c

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/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 All rights reserved.

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 without specific prior written permission.

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 $Id: time_8c-source.html 88 2016-01-12 00:11:29Z reddawg $

*****************************************************************************************/

#include <ubixos/types.h>
#include <ubixos/time.h>
#include <ubixos/vitals.h>
#include <lib/kprintf.h>
#include <assert.h>

static int month[12] = {
        0,
        DAY*(31),
        DAY*(31+29),
        DAY*(31+29+31),
        DAY*(31+29+31+30),
        DAY*(31+29+31+30+31),
        DAY*(31+29+31+30+31+30),
        DAY*(31+29+31+30+31+30+31),
        DAY*(31+29+31+30+31+30+31+31),
        DAY*(31+29+31+30+31+30+31+31+30),
        DAY*(31+29+31+30+31+30+31+31+30+31),
        DAY*(31+29+31+30+31+30+31+31+30+31+30)
};

static int timeCmosRead(int addr) {
  outportByteP(0x70,addr);
  return((int)inportByte(0x71));
  }

int time_init() {
  int i;
  struct timeStruct time;
 
  for (i = 0 ; i < 1000000 ; i++) {
    if (!(timeCmosRead(10) & 0x80)) {
      break;
      }
    }

  do {
    time.sec = timeCmosRead(0);
    time.min = timeCmosRead(2);
    time.hour = timeCmosRead(4);
    time.day = timeCmosRead(7);
    time.mon = timeCmosRead(8);
    time.year = timeCmosRead(9);
    } while (time.sec != timeCmosRead(0));

  BCD_TO_BIN(time.sec);
  BCD_TO_BIN(time.min);
  BCD_TO_BIN(time.hour);
  BCD_TO_BIN(time.day);
  BCD_TO_BIN(time.mon);
  BCD_TO_BIN(time.year);

  /* Set up our start time in seconds */
  systemVitals->timeStart = timeMake(&time);

  kprintf("%i/%i/%i %i:%i.%i\n",time.mon,time.day,time.year,time.hour,time.min,time.sec);

  
  /* Return so we know all went well */
  return(0x0);
  }

uInt32 timeMake(struct timeStruct *time) {
  uInt32 res;
  int year;

  year = (time->year+100) - 70;
  /* magic offsets (y+1) needed to get leapyears right.*/
  res = YEAR*year + DAY*((year+1)/4);
  res += month[time->mon];
  /* and (y+2) here. If it wasn't a leap-year, we have to adjust */
  if (time->mon>1 && ((year+2)%4))
    res -= DAY;
  res += DAY*(time->day-1);
  res += HOUR*time->hour;
  res += MINUTE*time->min;
  res += time->sec;
  return(res);
  }

int gettimeofday(struct timeval *tp,struct timezone *tzp) {
  //tp->tv_sec  = systemVitals->timeStart + systemVitals->sysUptime;
  tp->tv_sec    = 0x0;//systemVitals->sysUptime;
  tp->tv_usec = 0x0;
  return(0x0);
  }

/***
 END
 ***/

---