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clock.c revision 1.3.24.1
      1  1.3.24.1     skrll /*	$NetBSD: clock.c,v 1.3.24.1 2004/08/03 10:38:16 skrll Exp $ */
      2       1.1     chuck 
      3       1.1     chuck /*
      4       1.1     chuck  * Copyright (c) 1992, 1993
      5       1.1     chuck  *	The Regents of the University of California.  All rights reserved.
      6  1.3.24.1     skrll  *
      7  1.3.24.1     skrll  * This software was developed by the Computer Systems Engineering group
      8  1.3.24.1     skrll  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9  1.3.24.1     skrll  * contributed to Berkeley.
     10  1.3.24.1     skrll  *
     11  1.3.24.1     skrll  * All advertising materials mentioning features or use of this software
     12  1.3.24.1     skrll  * must display the following acknowledgement:
     13  1.3.24.1     skrll  *	This product includes software developed by the University of
     14  1.3.24.1     skrll  *	California, Lawrence Berkeley Laboratory.
     15  1.3.24.1     skrll  *
     16  1.3.24.1     skrll  * Redistribution and use in source and binary forms, with or without
     17  1.3.24.1     skrll  * modification, are permitted provided that the following conditions
     18  1.3.24.1     skrll  * are met:
     19  1.3.24.1     skrll  * 1. Redistributions of source code must retain the above copyright
     20  1.3.24.1     skrll  *    notice, this list of conditions and the following disclaimer.
     21  1.3.24.1     skrll  * 2. Redistributions in binary form must reproduce the above copyright
     22  1.3.24.1     skrll  *    notice, this list of conditions and the following disclaimer in the
     23  1.3.24.1     skrll  *    documentation and/or other materials provided with the distribution.
     24  1.3.24.1     skrll  * 3. Neither the name of the University nor the names of its contributors
     25  1.3.24.1     skrll  *    may be used to endorse or promote products derived from this software
     26  1.3.24.1     skrll  *    without specific prior written permission.
     27  1.3.24.1     skrll  *
     28  1.3.24.1     skrll  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  1.3.24.1     skrll  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  1.3.24.1     skrll  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  1.3.24.1     skrll  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  1.3.24.1     skrll  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  1.3.24.1     skrll  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  1.3.24.1     skrll  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  1.3.24.1     skrll  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  1.3.24.1     skrll  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  1.3.24.1     skrll  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  1.3.24.1     skrll  * SUCH DAMAGE.
     39  1.3.24.1     skrll  *
     40  1.3.24.1     skrll  *	@(#)clock.c	8.1 (Berkeley) 6/11/93
     41  1.3.24.1     skrll  */
     42  1.3.24.1     skrll 
     43  1.3.24.1     skrll /*
     44       1.1     chuck  * Copyright (c) 1994 Gordon W. Ross
     45       1.1     chuck  * Copyright (c) 1993 Adam Glass
     46       1.1     chuck  *
     47       1.1     chuck  * This software was developed by the Computer Systems Engineering group
     48       1.1     chuck  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
     49       1.1     chuck  * contributed to Berkeley.
     50       1.1     chuck  *
     51       1.1     chuck  * All advertising materials mentioning features or use of this software
     52       1.1     chuck  * must display the following acknowledgement:
     53       1.1     chuck  *	This product includes software developed by the University of
     54       1.1     chuck  *	California, Lawrence Berkeley Laboratory.
     55       1.1     chuck  *
     56       1.1     chuck  * Redistribution and use in source and binary forms, with or without
     57       1.1     chuck  * modification, are permitted provided that the following conditions
     58       1.1     chuck  * are met:
     59       1.1     chuck  * 1. Redistributions of source code must retain the above copyright
     60       1.1     chuck  *    notice, this list of conditions and the following disclaimer.
     61       1.1     chuck  * 2. Redistributions in binary form must reproduce the above copyright
     62       1.1     chuck  *    notice, this list of conditions and the following disclaimer in the
     63       1.1     chuck  *    documentation and/or other materials provided with the distribution.
     64       1.1     chuck  * 3. All advertising materials mentioning features or use of this software
     65       1.1     chuck  *    must display the following acknowledgement:
     66       1.1     chuck  *	This product includes software developed by the University of
     67       1.1     chuck  *	California, Berkeley and its contributors.
     68       1.1     chuck  * 4. Neither the name of the University nor the names of its contributors
     69       1.1     chuck  *    may be used to endorse or promote products derived from this software
     70       1.1     chuck  *    without specific prior written permission.
     71       1.1     chuck  *
     72       1.1     chuck  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     73       1.1     chuck  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     74       1.1     chuck  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     75       1.1     chuck  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     76       1.1     chuck  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     77       1.1     chuck  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     78       1.1     chuck  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     79       1.1     chuck  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     80       1.1     chuck  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     81       1.1     chuck  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     82       1.1     chuck  * SUCH DAMAGE.
     83       1.1     chuck  *
     84       1.1     chuck  *	@(#)clock.c	8.1 (Berkeley) 6/11/93
     85       1.1     chuck  */
     86       1.1     chuck 
     87       1.1     chuck /*
     88       1.1     chuck  * Clock driver.
     89       1.1     chuck  */
     90       1.1     chuck 
     91       1.1     chuck #include "sboot.h"
     92       1.1     chuck #include "clockreg.h"
     93       1.1     chuck 
     94       1.3  jdolecek #include <machine/prom.h>
     95       1.3  jdolecek #include "libsa.h"
     96       1.1     chuck 
     97       1.3  jdolecek static struct clockreg *clockreg = (struct clockreg *) CLOCK_ADDR;
     98       1.1     chuck 
     99       1.1     chuck /*
    100       1.1     chuck  * Set up the system's time, given a `reasonable' time value.
    101       1.1     chuck  */
    102       1.1     chuck u_long time()
    103       1.1     chuck {
    104       1.2       scw 	struct clockreg *cl = clockreg;
    105       1.1     chuck 	int sec, min, hour, day, mon, year;
    106       1.1     chuck 
    107       1.1     chuck 	cl->cl_csr |= CLK_READ;		/* enable read (stop time) */
    108       1.1     chuck 	sec = cl->cl_sec;
    109       1.1     chuck 	min = cl->cl_min;
    110       1.1     chuck 	hour = cl->cl_hour;
    111       1.1     chuck 	day = cl->cl_mday;
    112       1.1     chuck 	mon = cl->cl_month;
    113       1.1     chuck 	year = cl->cl_year;
    114       1.1     chuck 	cl->cl_csr &= ~CLK_READ;	/* time wears on */
    115       1.1     chuck 	return(chiptotime(sec, min, hour, day, mon, year));
    116       1.1     chuck }
    117