>>>>> "Hiroyuki" == Hiroyuki Bessho <bsh@grotto.iijnet.or.jp> writes:

  Hiroyuki> Currently I'm aware of some problems like:

  Hiroyuki>   + can't get date/time from RTC.


That's simple.

| static unsigned int low_read_time()
| {
|   volatile unsigned int *rtc = (volatile unsigned int *)0xa0710000;
|   return ((rtc[0]&0xffff)<<16)|(rtc[1]&0xffff);
| }
| 
| time_t time(time_t *tloc)
| {
|   unsigned int old, new;
|   time_t tmp;
|   if(tloc == NULL)
|     tloc = &tmp;
|   old = low_read_time();
|   for(;;) {
|     int i;
|     for(i=0; i<3; i++) {
| 	new = low_read_time();
| 	if(new != old)
| 	  break;
|     }
|     if(i<3)
| 	old = new;
|     else
| 	break;
|   }
|   return *tloc = new-631152000;
| }

This gives a UNIX time_t.


  // Marcus