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/*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)rtc.h 7.1 (Berkeley) 5/12/91 * $FreeBSD: release/9.1.0/sys/isa/rtc.h 209371 2010-06-20 21:33:29Z mav $ */ #ifndef _I386_ISA_RTC_H_ #define _I386_ISA_RTC_H_ 1 /* * MC146818 RTC Register locations */ #define RTC_SEC 0x00 /* seconds */ #define RTC_SECALRM 0x01 /* seconds alarm */ #define RTC_MIN 0x02 /* minutes */ #define RTC_MINALRM 0x03 /* minutes alarm */ #define RTC_HRS 0x04 /* hours */ #define RTC_HRSALRM 0x05 /* hours alarm */ #define RTC_WDAY 0x06 /* week day */ #define RTC_DAY 0x07 /* day of month */ #define RTC_MONTH 0x08 /* month of year */ #define RTC_YEAR 0x09 /* month of year */ #define RTC_STATUSA 0x0a /* status register A */ #define RTCSA_TUP 0x80 /* time update, don't look now */ #define RTCSA_RESET 0x70 /* reset divider */ #define RTCSA_DIVIDER 0x20 /* divider correct for 32768 Hz */ #define RTCSA_8192 0x03 /* 8192 Hz interrupt */ #define RTCSA_4096 0x04 #define RTCSA_2048 0x05 #define RTCSA_1024 0x06 /* default for profiling */ #define RTCSA_PROF RTCSA_1024 #define RTC_PROFRATE 1024 #define RTCSA_512 0x07 #define RTCSA_256 0x08 #define RTCSA_128 0x09 #define RTCSA_NOPROF RTCSA_128 #define RTC_NOPROFRATE 128 #define RTCSA_64 0x0a #define RTCSA_32 0x0b /* 32 Hz interrupt */ #define RTC_STATUSB 0x0b /* status register B */ #define RTCSB_DST 0x01 /* USA Daylight Savings Time enable */ #define RTCSB_24HR 0x02 /* 0 = 12 hours, 1 = 24 hours */ #define RTCSB_BCD 0x04 /* 0 = BCD, 1 = Binary coded time */ #define RTCSB_SQWE 0x08 /* 1 = output sqare wave at SQW pin */ #define RTCSB_UINTR 0x10 /* 1 = enable update-ended interrupt */ #define RTCSB_AINTR 0x20 /* 1 = enable alarm interrupt */ #define RTCSB_PINTR 0x40 /* 1 = enable periodic clock interrupt */ #define RTCSB_HALT 0x80 /* stop clock updates */ #define RTC_INTR 0x0c /* status register C (R) interrupt source */ #define RTCIR_UPDATE 0x10 /* update intr */ #define RTCIR_ALARM 0x20 /* alarm intr */ #define RTCIR_PERIOD 0x40 /* periodic intr */ #define RTCIR_INT 0x80 /* interrupt output signal */ #define RTC_STATUSD 0x0d /* status register D (R) Lost Power */ #define RTCSD_PWR 0x80 /* clock power OK */ #define RTC_DIAG 0x0e /* status register E - bios diagnostic */ #define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time" #define RTC_RESET 0x0f /* status register F - reset code byte */ #define RTCRS_RST 0x00 /* normal reset */ #define RTCRS_LOAD 0x04 /* load system */ #define RTC_FDISKETTE 0x10 /* diskette drive type in upper/lower nibble */ #define RTCFDT_NONE 0 /* none present */ #define RTCFDT_360K 0x10 /* 360K */ #define RTCFDT_12M 0x20 /* 1.2M */ #define RTCFDT_720K 0x30 /* 720K */ #define RTCFDT_144M 0x40 /* 1.44M */ #define RTCFDT_288M_1 0x50 /* 2.88M, some BIOSes */ #define RTCFDT_288M 0x60 /* 2.88M */ #define RTC_BASELO 0x15 /* low byte of basemem size */ #define RTC_BASEHI 0x16 /* high byte of basemem size */ #define RTC_EXTLO 0x17 /* low byte of extended mem size */ #define RTC_EXTHI 0x18 /* low byte of extended mem size */ #define RTC_CENTURY 0x32 /* current century */ #ifdef _KERNEL extern struct mtx clock_lock; extern int atrtcclock_disable; int rtcin(int reg); void atrtc_restore(void); void writertc(int reg, u_char val); #endif #endif /* _I386_ISA_RTC_H_ */