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Annotation of sys/arch/mvme68k/dev/nvramreg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: nvramreg.h,v 1.4 2003/06/02 23:27:50 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:
                     41: /*
                     42:  * Mostek MK48T02 clock.
                     43:  */
                     44: struct clockreg {
                     45:        volatile u_char cl_csr;         /* control register */
                     46:        volatile u_char cl_sec;         /* seconds (0..59; BCD) */
                     47:        volatile u_char cl_min;         /* minutes (0..59; BCD) */
                     48:        volatile u_char cl_hour;        /* hour (0..23; BCD) */
                     49:        volatile u_char cl_wday;        /* weekday (1..7) */
                     50:        volatile u_char cl_mday;        /* day in month (1..31; BCD) */
                     51:        volatile u_char cl_month;       /* month (1..12; BCD) */
                     52:        volatile u_char cl_year;        /* year (0..99; BCD) */
                     53: };
                     54:
                     55: /* bits in cl_csr */
                     56: #define        CLK_WRITE       0x80            /* want to write */
                     57: #define        CLK_READ        0x40            /* want to read (freeze clock) */
                     58:
                     59: /*
                     60:  * Motorola chose the year `1900' as their base count.
                     61:  * XXX what happens when it wraps?
                     62:  */
                     63: #define        YEAR0   0
                     64:
                     65: #define MK48T02_SIZE   2*1024
                     66: #define MK48T08_SIZE   8*1024