Annotation of sys/arch/mvme88k/stand/sboot/clockreg.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: clockreg.h,v 1.3 2003/06/02 23:27:53 millert Exp $ */
2:
3: /*
4: * Copyright (c) 1992, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This software was developed by the Computer Systems Engineering group
8: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9: * contributed to Berkeley.
10: *
11: * All advertising materials mentioning features or use of this software
12: * must display the following acknowledgement:
13: * This product includes software developed by the University of
14: * California, Lawrence Berkeley Laboratory.
15: *
16: * Redistribution and use in source and binary forms, with or without
17: * modification, are permitted provided that the following conditions
18: * are met:
19: * 1. Redistributions of source code must retain the above copyright
20: * notice, this list of conditions and the following disclaimer.
21: * 2. Redistributions in binary form must reproduce the above copyright
22: * notice, this list of conditions and the following disclaimer in the
23: * documentation and/or other materials provided with the distribution.
24: * 3. Neither the name of the University nor the names of its contributors
25: * may be used to endorse or promote products derived from this software
26: * without specific prior written permission.
27: *
28: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38: * SUCH DAMAGE.
39: *
40: * @(#)clockreg.h 8.1 (Berkeley) 6/11/93
41: */
42:
43: /*
44: * Mostek MK48T02 clock.
45: */
46: struct clockreg {
47: volatile u_char cl_csr; /* control register */
48: volatile u_char cl_sec; /* seconds (0..59; BCD) */
49: volatile u_char cl_min; /* minutes (0..59; BCD) */
50: volatile u_char cl_hour; /* hour (0..23; BCD) */
51: volatile u_char cl_wday; /* weekday (1..7) */
52: volatile u_char cl_mday; /* day in month (1..31; BCD) */
53: volatile u_char cl_month; /* month (1..12; BCD) */
54: volatile u_char cl_year; /* year (0..99; BCD) */
55: };
56:
57: /* bits in cl_csr */
58: #define CLK_WRITE 0x80 /* want to write */
59: #define CLK_READ 0x40 /* want to read (freeze clock) */
60:
61: /*
62: * Sun chose the year `68' as their base count, so that
63: * cl_year==0 means 1968.
64: */
65: #define YEAR0 68
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