1 /* $NetBSD: clockreg.h,v 1.3 2005/12/11 12:18:19 christos 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 66