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Annotation of sys/arch/mvme88k/dev/nvramreg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: nvramreg.h,v 1.8 2007/04/10 17:47:54 miod 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:  * mvme1x7 Mostek TOD clock/NVRAM
                     45:  */
                     46:
                     47: /*
                     48:  * Mostek MK48T08 clock.
                     49:  *
                     50:  * This chip is 8k in size.
                     51:  * The first TOD clock starts at offset 0x1FF8. The following structure
                     52:  * describes last 2K of its 8K address space. The first 6K of the NVRAM
                     53:  * space is used for various things as follows:
                     54:  *     0000-0fff       User Area
                     55:  *     1000-10ff       Networking Area
                     56:  *     1100-16f7       Operating System Area
                     57:  *     16f8-1ef7       ROM Debugger Area
                     58:  *     1ef8-1ff7       Configuration Area (Ethernet address etc)
                     59:  *     1ff8-1fff       TOD clock
                     60:  */
                     61:
                     62: /*
                     63:  * On MVME188, these offsets need shifting two bits, as they are 32 bit
                     64:  * registers.
                     65:  */
                     66: #define        CLK_CSR         0               /* control register */
                     67: #define        CLK_SEC         1               /* seconds (0..59; BCD) */
                     68: #define        CLK_MIN         2               /* minutes (0..59; BCD) */
                     69: #define        CLK_HOUR        3               /* hour (0..23; BCD) */
                     70: #define        CLK_WDAY        4               /* weekday (1..7) */
                     71: #define        CLK_DAY         5               /* day in month (1..31; BCD) */
                     72: #define        CLK_MONTH       6               /* month (1..12; BCD) */
                     73: #define        CLK_YEAR        7               /* year (0..99; BCD) */
                     74: #define        CLK_NREG        8
                     75:
                     76: /* csr bits */
                     77: #define        CLK_WRITE       0x80            /* want to write */
                     78: #define        CLK_READ        0x40            /* want to read (freeze clock) */
                     79:
                     80: /*
                     81:  * Motorola chose the year `1900' as their base count. It has already
                     82:  * wrapped by now...
                     83:  */
                     84: #define        YEAR0   00
                     85:
                     86: #define SBC_NVRAM_TOD_OFF      0x1ff8 /* offset of tod in NVRAM space */
                     87: #define M188_NVRAM_TOD_OFF     0x1fe0 /* offset of tod in NVRAM space */
                     88: #define MK48T02_SIZE   2 * 1024
                     89: #define MK48T08_SIZE   8 * 1024