src/dev/rtcreg.h

   1 /*
   2  * Copyright (c) 2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Ali Saidi
  29  *          Miguel Serrano
  30  *          Nathan Binkert
  31  */
  32
  33 static const int RTC_SEC = 0x00;
  34 static const int RTC_SEC_ALRM = 0x01;
  35 static const int RTC_MIN = 0x02;
  36 static const int RTC_MIN_ALRM = 0x03;
  37 static const int RTC_HR = 0x04;
  38 static const int RTC_HR_ALRM = 0x05;
  39 static const int RTC_DOW = 0x06;
  40 static const int RTC_DOM = 0x07;
  41 static const int RTC_MON = 0x08;
  42 static const int RTC_YEAR = 0x09;
  43
  44 static const int RTC_STAT_REGA = 0x0A;
  45 static const int RTCA_1024HZ = 0x06;  /* 1024Hz periodic interrupt frequency */
  46 static const int RTCA_32768HZ = 0x20; /* 22-stage divider, 32.768KHz timebase */
  47 static const int RTCA_UIP = 0x80;     /* 1 = date and time update in progress */
  48
  49 static const int RTC_STAT_REGB = 0x0B;
  50 static const int RTCB_DST = 0x01;     /* USA Daylight Savings Time enable */
  51 static const int RTCB_24HR = 0x02;    /* 0 = 12 hours, 1 = 24 hours */
  52 static const int RTCB_BIN = 0x04;     /* 0 = BCD, 1 = Binary coded time */
  53 static const int RTCB_SQWE = 0x08;    /* 1 = output sqare wave at SQW pin */
  54 static const int RTCB_UPDT_IE = 0x10; /* 1 = enable update-ended interrupt */
  55 static const int RTCB_ALRM_IE = 0x20; /* 1 = enable alarm interrupt */
  56 static const int RTCB_PRDC_IE = 0x40; /* 1 = enable periodic clock interrupt */
  57 static const int RTCB_NO_UPDT = 0x80; /* stop clock updates */
  58
  59 static const int RTC_STAT_REGC = 0x0C;
  60 static const int RTC_STAT_REGD = 0x0D;
  61