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mk48txxreg.h revision 1.1 
      1 /*	$NetBSD: mk48txxreg.h,v 1.1 2000/07/25 22:33:03 pk Exp $ */
      2 /*-
      3  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Paul Kranenburg.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *        This product includes software developed by the NetBSD
     20  *        Foundation, Inc. and its contributors.
     21  * 4. Neither the name of The NetBSD Foundation nor the names of its
     22  *    contributors may be used to endorse or promote products derived
     23  *    from this software without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     26  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 /*
     39  * Mostek MK48Txx clocks.
     40  *
     41  * The MK48T02 has 2KB of non-volatile memory. The time-of-day clock
     42  * registers start at offset 0x7f8.
     43  *
     44  * The MK48T02 has 8KB of non-volatile memory
     45  *
     46  * The MK48T59 also has 8KB of non-volatile memory but in addition it
     47  * has a battery low detection bit and a power supply wakeup alarm for
     48  * power management.  It's at offset 0x1ff0 in the NVRAM.
     49  */
     50 
     51 /*
     52  * Mostek MK48TXX register definitions
     53  */
     54 
     55 /*
     56  * The first bank of eight registers at offset (nvramsz - 16) is
     57  * available only on recenter (which??) MK48Txx models.
     58  */
     59 #define MK48TXX_X0	0	/* find out later */
     60 				/* ... */
     61 #define MK48TXX_X7	7	/* find out later */
     62 #define MK48TXX_ICSR	8	/* control register */
     63 #define MK48TXX_ISEC	9	/* seconds (0..59; BCD) */
     64 #define MK48TXX_IMIN	10	/* minutes (0..59; BCD) */
     65 #define MK48TXX_IHOUR	11	/* hour (0..23; BCD) */
     66 #define MK48TXX_IWDAY	12	/* weekday (1..7) */
     67 #define MK48TXX_IDAY	13	/* day in month (1..31; BCD) */
     68 #define MK48TXX_IMON	14	/* month (1..12; BCD) */
     69 #define MK48TXX_IYEAR	15	/* year (0..99; BCD) */
     70 
     71 /* Bits in the control register */
     72 #define MK48TXX_CSR_WRITE	0x80	/* want to write */
     73 #define MK48TXX_CSR_READ	0x40	/* want to read (freeze clock) */
     74 
     75 #define MK48T02_CLKSZ		2048
     76 #define MK48T02_CLKOFF		0x7f0
     77 
     78 #define MK48T08_CLKSZ		8192
     79 #define MK48T08_CLKOFF		0x1ff0
     80 
     81 #define MK48T59_CLKSZ		8192
     82 #define MK48T59_CLKOFF		0x1ff0
     83 
     84 todr_chip_handle_t mk48txx_attach(bus_space_tag_t, bus_space_handle_t,
     85 				  const char *, int);
     86