rtc.h revision 128019
1251883Speter/*- 2251883Speter * Copyright (c) 1990 The Regents of the University of California. 3251883Speter * All rights reserved. 4251883Speter * 5251883Speter * This code is derived from software contributed to Berkeley by 6251883Speter * William Jolitz. 7251883Speter * 8251883Speter * Redistribution and use in source and binary forms, with or without 9251883Speter * modification, are permitted provided that the following conditions 10251883Speter * are met: 11251883Speter * 1. Redistributions of source code must retain the above copyright 12251883Speter * notice, this list of conditions and the following disclaimer. 13251883Speter * 2. Redistributions in binary form must reproduce the above copyright 14251883Speter * notice, this list of conditions and the following disclaimer in the 15251883Speter * documentation and/or other materials provided with the distribution. 16251883Speter * 4. Neither the name of the University nor the names of its contributors 17251883Speter * may be used to endorse or promote products derived from this software 18251883Speter * without specific prior written permission. 19251883Speter * 20251883Speter * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21251883Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22251883Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23251883Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24251883Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25251883Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26251883Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27251883Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28251883Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29251883Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30251883Speter * SUCH DAMAGE. 31251883Speter * 32251883Speter * from: @(#)rtc.h 7.1 (Berkeley) 5/12/91 33251883Speter * $FreeBSD: head/sys/isa/rtc.h 128019 2004-04-07 20:46:16Z imp $ 34251883Speter */ 35251883Speter 36251883Speter#ifndef _I386_ISA_RTC_H_ 37251883Speter#define _I386_ISA_RTC_H_ 1 38251883Speter 39251883Speter/* 40251883Speter * MC146818 RTC Register locations 41251883Speter */ 42251883Speter 43251883Speter#define RTC_SEC 0x00 /* seconds */ 44251883Speter#define RTC_SECALRM 0x01 /* seconds alarm */ 45251883Speter#define RTC_MIN 0x02 /* minutes */ 46251883Speter#define RTC_MINALRM 0x03 /* minutes alarm */ 47251883Speter#define RTC_HRS 0x04 /* hours */ 48251883Speter#define RTC_HRSALRM 0x05 /* hours alarm */ 49251883Speter#define RTC_WDAY 0x06 /* week day */ 50251883Speter#define RTC_DAY 0x07 /* day of month */ 51251883Speter#define RTC_MONTH 0x08 /* month of year */ 52251883Speter#define RTC_YEAR 0x09 /* month of year */ 53251883Speter 54251883Speter#define RTC_STATUSA 0x0a /* status register A */ 55251883Speter#define RTCSA_TUP 0x80 /* time update, don't look now */ 56251883Speter#define RTCSA_RESET 0x70 /* reset divider */ 57251883Speter#define RTCSA_DIVIDER 0x20 /* divider correct for 32768 Hz */ 58251883Speter#define RTCSA_8192 0x03 /* 8192 Hz interrupt */ 59251883Speter#define RTCSA_4096 0x04 60251883Speter#define RTCSA_2048 0x05 61251883Speter#define RTCSA_1024 0x06 /* default for profiling */ 62251883Speter#define RTCSA_PROF RTCSA_1024 63251883Speter#define RTC_PROFRATE 1024 64251883Speter#define RTCSA_512 0x07 65251883Speter#define RTCSA_256 0x08 66251883Speter#define RTCSA_128 0x09 67251883Speter#define RTCSA_NOPROF RTCSA_128 68251883Speter#define RTC_NOPROFRATE 128 69251883Speter#define RTCSA_64 0x0a 70251883Speter#define RTCSA_32 0x0b /* 32 Hz interrupt */ 71251883Speter 72251883Speter#define RTC_STATUSB 0x0b /* status register B */ 73251883Speter#define RTCSB_DST 0x01 /* USA Daylight Savings Time enable */ 74251883Speter#define RTCSB_24HR 0x02 /* 0 = 12 hours, 1 = 24 hours */ 75251883Speter#define RTCSB_BCD 0x04 /* 0 = BCD, 1 = Binary coded time */ 76251883Speter#define RTCSB_SQWE 0x08 /* 1 = output sqare wave at SQW pin */ 77251883Speter#define RTCSB_UINTR 0x10 /* 1 = enable update-ended interrupt */ 78251883Speter#define RTCSB_AINTR 0x20 /* 1 = enable alarm interrupt */ 79251883Speter#define RTCSB_PINTR 0x40 /* 1 = enable periodic clock interrupt */ 80251883Speter#define RTCSB_HALT 0x80 /* stop clock updates */ 81251883Speter 82251883Speter#define RTC_INTR 0x0c /* status register C (R) interrupt source */ 83251883Speter#define RTCIR_UPDATE 0x10 /* update intr */ 84251883Speter#define RTCIR_ALARM 0x20 /* alarm intr */ 85251883Speter#define RTCIR_PERIOD 0x40 /* periodic intr */ 86251883Speter#define RTCIR_INT 0x80 /* interrupt output signal */ 87251883Speter 88251883Speter#define RTC_STATUSD 0x0d /* status register D (R) Lost Power */ 89251883Speter#define RTCSD_PWR 0x80 /* clock power OK */ 90251883Speter 91251883Speter#define RTC_DIAG 0x0e /* status register E - bios diagnostic */ 92251883Speter#define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time" 93251883Speter 94251883Speter#define RTC_RESET 0x0f /* status register F - reset code byte */ 95251883Speter#define RTCRS_RST 0x00 /* normal reset */ 96251883Speter#define RTCRS_LOAD 0x04 /* load system */ 97251883Speter 98251883Speter#define RTC_FDISKETTE 0x10 /* diskette drive type in upper/lower nibble */ 99251883Speter#define RTCFDT_NONE 0 /* none present */ 100251883Speter#define RTCFDT_360K 0x10 /* 360K */ 101251883Speter#define RTCFDT_12M 0x20 /* 1.2M */ 102251883Speter#define RTCFDT_720K 0x30 /* 720K */ 103251883Speter#define RTCFDT_144M 0x40 /* 1.44M */ 104251883Speter#define RTCFDT_288M_1 0x50 /* 2.88M, some BIOSes */ 105251883Speter#define RTCFDT_288M 0x60 /* 2.88M */ 106251883Speter 107251883Speter#define RTC_BASELO 0x15 /* low byte of basemem size */ 108251883Speter#define RTC_BASEHI 0x16 /* high byte of basemem size */ 109251883Speter#define RTC_EXTLO 0x17 /* low byte of extended mem size */ 110251883Speter#define RTC_EXTHI 0x18 /* low byte of extended mem size */ 111251883Speter 112251883Speter#define RTC_CENTURY 0x32 /* current century */ 113251883Speter#endif /* _I386_ISA_RTC_H_ */ 114251883Speter