1 /* $OpenBSD: mk48txxreg.h,v 1.5 2009/05/15 23:02:25 miod Exp $ */ 2 /* $NetBSD: mk48txxreg.h,v 1.4 2000/11/11 11:59:42 pk Exp $ */ 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Mostek MK48Txx clocks. 34 * 35 * The MK48T02 has 2KB of non-volatile memory. The time-of-day clock 36 * registers start at offset 0x7f8. 37 * 38 * The MK48T08 and MK48T18 have 8KB of non-volatile memory 39 * 40 * The MK48T59 also has 8KB of non-volatile memory but in addition it 41 * has a battery low detection bit and a power supply wakeup alarm for 42 * power management. It's at offset 0x1ff0 in the NVRAM. 43 */ 44 45 /* 46 * Mostek MK48TXX register definitions 47 */ 48 49 /* 50 * The first bank of eight registers at offset (nvramsz - 16) is 51 * available only on recenter (which??) MK48Txx models. 52 */ 53 #define MK48TXX_X0 0 /* find out later */ 54 /* ... */ 55 #define MK48TXX_X7 7 /* find out later */ 56 #define MK48TXX_ICSR 8 /* control register */ 57 #define MK48TXX_ISEC 9 /* seconds (0..59; BCD) */ 58 #define MK48TXX_IMIN 10 /* minutes (0..59; BCD) */ 59 #define MK48TXX_IHOUR 11 /* hour (0..23; BCD) */ 60 #define MK48TXX_IWDAY 12 /* weekday (1..7) */ 61 #define MK48TXX_IDAY 13 /* day in month (1..31; BCD) */ 62 #define MK48TXX_IMON 14 /* month (1..12; BCD) */ 63 #define MK48TXX_IYEAR 15 /* year (0..99; BCD) */ 64 65 /* Bits in the control register */ 66 #define MK48TXX_CSR_WRITE 0x80 /* want to write */ 67 #define MK48TXX_CSR_READ 0x40 /* want to read (freeze clock) */ 68 69 #define MK48T02_CLKSZ 2048 70 #define MK48T02_CLKOFF 0x7f0 71 72 #define MK48T08_CLKSZ 8192 73 #define MK48T08_CLKOFF 0x1ff0 74 75 #define MK48T18_CLKSZ 8192 76 #define MK48T18_CLKOFF 0x1ff0 77 78 #define MK48T59_CLKSZ 8192 79 #define MK48T59_CLKOFF 0x1ff0 80 81 #define MK48T35_CLKSZ 0x8000 82 #define MK48T35_CLKOFF 0x7ff0 83 84 /* Chip attach function */ 85 todr_chip_handle_t mk48txx_attach(bus_space_tag_t, bus_space_handle_t, 86 const char *, int); 87 88 /* Retrieve size of the on-chip NVRAM area */ 89 int mk48txx_get_nvram_size(todr_chip_handle_t, bus_size_t *); 90