+++ /dev/null
-/*
- * (C) Copyright 2001
- * Denis Peter MPL AG Switzerland. d.peter@mpl.ch
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/*
- * Date & Time support for the MC146818 (PIXX4) RTC
- */
-
-/*#define DEBUG*/
-
-#include <common.h>
-#include <command.h>
-#include <rtc.h>
-
-#if defined(CONFIG_RTC_MC146818) && defined(CONFIG_CMD_DATE)
-
-static uchar rtc_read (uchar reg);
-static void rtc_write (uchar reg, uchar val);
-static uchar bin2bcd (unsigned int n);
-static unsigned bcd2bin(uchar c);
-
-#define RTC_PORT_MC146818 CFG_ISA_IO_BASE_ADDRESS + 0x70
-#define RTC_SECONDS 0x00
-#define RTC_SECONDS_ALARM 0x01
-#define RTC_MINUTES 0x02
-#define RTC_MINUTES_ALARM 0x03
-#define RTC_HOURS 0x04
-#define RTC_HOURS_ALARM 0x05
-#define RTC_DAY_OF_WEEK 0x06
-#define RTC_DATE_OF_MONTH 0x07
-#define RTC_MONTH 0x08
-#define RTC_YEAR 0x09
-#define RTC_CONFIG_A 0x0A
-#define RTC_CONFIG_B 0x0B
-#define RTC_CONFIG_C 0x0C
-#define RTC_CONFIG_D 0x0D
-
-
-/* ------------------------------------------------------------------------- */
-
-void rtc_get (struct rtc_time *tmp)
-{
- uchar sec, min, hour, mday, wday, mon, year;
- /* here check if rtc can be accessed */
- while((rtc_read(RTC_CONFIG_A)&0x80)==0x80);
- sec = rtc_read (RTC_SECONDS);
- min = rtc_read (RTC_MINUTES);
- hour = rtc_read (RTC_HOURS);
- mday = rtc_read (RTC_DATE_OF_MONTH);
- wday = rtc_read (RTC_DAY_OF_WEEK);
- mon = rtc_read (RTC_MONTH);
- year = rtc_read (RTC_YEAR);
-#ifdef CONFIG_AMIGAONEG3SE
- wday -= 1; /* VIA 686 stores Sunday = 1, Monday = 2, ... */
-#endif
-#ifdef RTC_DEBUG
- printf ( "Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
- "hr: %02x min: %02x sec: %02x\n",
- year, mon, mday, wday,
- hour, min, sec );
- printf ( "Alarms: month: %02x hour: %02x min: %02x sec: %02x\n",
- rtc_read (RTC_CONFIG_D) & 0x3F,
- rtc_read (RTC_HOURS_ALARM),
- rtc_read (RTC_MINUTES_ALARM),
- rtc_read (RTC_SECONDS_ALARM) );
-#endif
- tmp->tm_sec = bcd2bin (sec & 0x7F);
- tmp->tm_min = bcd2bin (min & 0x7F);
- tmp->tm_hour = bcd2bin (hour & 0x3F);
- tmp->tm_mday = bcd2bin (mday & 0x3F);
- tmp->tm_mon = bcd2bin (mon & 0x1F);
- tmp->tm_year = bcd2bin (year);
- tmp->tm_wday = bcd2bin (wday & 0x07);
- if(tmp->tm_year<70)
- tmp->tm_year+=2000;
- else
- tmp->tm_year+=1900;
- tmp->tm_yday = 0;
- tmp->tm_isdst= 0;
-#ifdef RTC_DEBUG
- printf ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
- tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
- tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
-#endif
-}
-
-void rtc_set (struct rtc_time *tmp)
-{
-#ifdef RTC_DEBUG
- printf ( "Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
- tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
- tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
-#endif
- rtc_write(RTC_CONFIG_B,0x82); /* disables the RTC to update the regs */
-
- rtc_write (RTC_YEAR, bin2bcd(tmp->tm_year % 100));
- rtc_write (RTC_MONTH, bin2bcd(tmp->tm_mon));
-#ifdef CONFIG_AMIGAONEG3SE
- rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday)+1);
-#else
- rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday));
-#endif
- rtc_write (RTC_DATE_OF_MONTH, bin2bcd(tmp->tm_mday));
- rtc_write (RTC_HOURS, bin2bcd(tmp->tm_hour));
- rtc_write (RTC_MINUTES, bin2bcd(tmp->tm_min ));
- rtc_write (RTC_SECONDS, bin2bcd(tmp->tm_sec ));
- rtc_write(RTC_CONFIG_B,0x02); /* enables the RTC to update the regs */
-
-}
-
-void rtc_reset (void)
-{
- rtc_write(RTC_CONFIG_B,0x82); /* disables the RTC to update the regs */
- rtc_write(RTC_CONFIG_A,0x20); /* Normal OP */
- rtc_write(RTC_CONFIG_B,0x00);
- rtc_write(RTC_CONFIG_B,0x00);
- rtc_write(RTC_CONFIG_B,0x02); /* enables the RTC to update the regs */
-}
-
-/* ------------------------------------------------------------------------- */
-
-#ifdef CFG_RTC_REG_BASE_ADDR
-/*
- * use direct memory access
- */
-static uchar rtc_read (uchar reg)
-{
- return(in8(CFG_RTC_REG_BASE_ADDR+reg));
-}
-
-static void rtc_write (uchar reg, uchar val)
-{
- out8(CFG_RTC_REG_BASE_ADDR+reg, val);
-}
-#else
-static uchar rtc_read (uchar reg)
-{
- out8(RTC_PORT_MC146818,reg);
- return(in8(RTC_PORT_MC146818+1));
-}
-
-static void rtc_write (uchar reg, uchar val)
-{
- out8(RTC_PORT_MC146818,reg);
- out8(RTC_PORT_MC146818+1,val);
-}
-#endif
-
-static unsigned bcd2bin (uchar n)
-{
- return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
-}
-
-static unsigned char bin2bcd (unsigned int n)
-{
- return (((n / 10) << 4) | (n % 10));
-}
-
-#endif
projects / karo-tx-uboot.git / blobdiff