apps/include/cmos.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _LIBMEINOS_CMOS_H_
  20 #define _LIBMEINOS_CMOS_H_
  21
  22 #include <sys/types.h>
  23
  24 #define CMOS_PORT_ADDRESS 0x70
  25 #define CMOS_PORT_DATA    0x71
  26
  27 #define CMOS_OFFSET_SECOND       0x00
  28 #define CMOS_OFFSET_ALARMSECOND  0x01
  29 #define CMOS_OFFSET_MINUTE       0x02
  30 #define CMOS_OFFSET_ALARMINUTE   0x03
  31 #define CMOS_OFFSET_HOUR         0x04
  32 #define CMOS_OFFSET_ALARMHOUR    0x05
  33 #define CMOS_OFFSET_DAYOFWEEK    0x06
  34 #define CMOS_OFFSET_DAYOFMONTH   0x07
  35 #define CMOS_OFFSET_MONTH        0x08
  36 #define CMOS_OFFSET_YEAR         0x09
  37 #define CMOS_OFFSET_SRA          0x0A
  38 #define CMOS_OFFSET_SRB          0x0B
  39 #define CMOS_OFFSET_SRC          0x0C
  40 #define CMOS_OFFSET_SRD          0x0D
  41 #define CMOS_OFFSET_POST         0x0E
  42 #define CMOS_OFFSET_SHUTDOWN     0x0F
  43 #define CMOS_OFFSET_FDTYPES      0x10
  44 #define CMOS_OFFSET_HDTYPES      0x12
  45 #define CMOS_OFFSET_DEVICEBYTE   0x14
  46 #define CMOS_OFFSET_BASEMEMLOW   0x15
  47 #define CMOS_OFFSET_BASEMEMHIGH  0x16
  48 #define CMOS_OFFSET_EXTMEMLOW    0x17
  49 #define CMOS_OFFSET_EXTMEMHIGH   0x18
  50 #define CMOS_OFFSET_CHECKSUMHIGH 0x2E
  51 #define CMOS_OFFSET_CHECKSUMLOW  0x2F
  52 #define CMOS_OFFSET_CENTURY      0x32
  53
  54 #define cmos_bcd2bin(bcd)    (((bcd>>4)&0x0F)*10+(bcd&0x0F))
  55 #define cmos_bin2bcd(bin)    (((bin/10)<<8)+(bin%10))
  56
  57 #define cmos_getsecond()     cmos_bcd2bin(cmos_read(CMOS_OFFSET_SECOND))
  58 #define cmos_getminute()     cmos_bcd2bin(cmos_read(CMOS_OFFSET_MINUTE))
  59 #define cmos_gethour()       cmos_bcd2bin(cmos_read(CMOS_OFFSET_HOUR))
  60 #define cmos_getdayofweek()  cmos_bcd2bin(cmos_read(CMOS_OFFSET_DAYOFWEEK))
  61 #define cmos_getday()        cmos_bcd2bin(cmos_read(CMOS_OFFSET_DAYOFMONTH))
  62 #define cmos_getmonth()      cmos_bcd2bin(cmos_read(CMOS_OFFSET_MONTH))
  63 #define cmos_getyear()       (cmos_bcd2bin(cmos_read(CMOS_OFFSET_CENTURY))*100+cmos_bcd2bin(cmos_read(CMOS_OFFSET_YEAR)))
  64
  65 #define cmos_setsecond(v)    cmos_write(CMOS_OFFSET_SECOND,cmos_bin2bcd(v))
  66 #define cmos_setminute(v)    cmos_write(CMOS_OFFSET_MINUTE,cmos_bin2bcd(v))
  67 #define cmos_sethour(v)      cmos_write(CMOS_OFFSET_HOUR,cmos_bin2bcd(v))
  68 #define cmos_setdayofweek(v) cmos_write(CMOS_OFFSET_DAYOFWEEK,cmos_bin2bcd(v))
  69 #define cmos_setday(v)       cmos_write(CMOS_OFFSET_DAYOFMONTH,cmos_bin2bcd(v))
  70 #define cmos_setmonth(v)     cmos_write(CMOS_OFFSET_MONTH,cmos_bin2bcd(v))
  71 #define cmos_setyear(v)      do { cmos_write(CMOS_OFFSET_YEAR,cmos_bin2bcd(v&0xFF)); cmos_write(CMOS_OFFSET_CENTURY,cmos_bin2bcd((v>>8)&0xFF)); } while(0);
  72
  73 #define cmos_getbasemem()    ((cmos_read(CMOS_OFFSET_BASEMEMHIGH)<<8)|cmos_read(CMOS_OFFSET_BASEMEMLOW))
  74 #define cmos_getextmem()     ((cmos_read(CMOS_OFFSET_EXTMEMHIGH)<<8)|cmos_read(CMOS_OFFSET_EXTMEMLOW))
  75 #define cmos_getchecksum()   ((cmos_read(CMOS_OFFSET_CHECKSUMHIGH)<<8)|cmos_read(CMOS_OFFSET_CHECKSUMLOW))
  76
  77 int cmos_read(size_t offset);
  78 void cmos_write(size_t offset,int val);
  79
  80 #endif