/* * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Andreas Heppel <aheppel@sysgo.de> * * 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 MK48T59 RTC */ #undef RTC_DEBUG #include <common.h> #include <command.h> #include <config.h> #include <rtc.h> #include <mk48t59.h> #if defined(CONFIG_BAB7xx) static uchar rtc_read (short reg) { out8(RTC_PORT_ADDR0, reg & 0xFF); out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF); return in8(RTC_PORT_DATA); } static void rtc_write (short reg, uchar val) { out8(RTC_PORT_ADDR0, reg & 0xFF); out8(RTC_PORT_ADDR1, (reg>>8) & 0xFF); out8(RTC_PORT_DATA, val); } #elif defined(CONFIG_PCIPPC2) #include "../board/pcippc2/pcippc2.h" static uchar rtc_read (short reg) { return in8(RTC(reg)); } static void rtc_write (short reg, uchar val) { out8(RTC(reg),val); } #elif defined(CONFIG_AMIGAONEG3SE) #include "../board/MAI/AmigaOneG3SE/via686.h" #include "../board/MAI/AmigaOneG3SE/memio.h" static uchar rtc_read (short reg) { out_byte(CMOS_ADDR, (uint8)reg); return in_byte(CMOS_DATA); } static void rtc_write (short reg, uchar val) { out_byte(CMOS_ADDR, (uint8)reg); out_byte(CMOS_DATA, (uint8)val); } #elif defined(CONFIG_EVAL5200) static uchar rtc_read (short reg) { return in8(RTC(reg)); } static void rtc_write (short reg, uchar val) { out8(RTC(reg),val); } #else # error Board specific rtc access functions should be supplied #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)); } /* ------------------------------------------------------------------------- */ void *nvram_read(void *dest, const short src, size_t count) { uchar *d = (uchar *) dest; short s = src; while (count--) *d++ = rtc_read(s++); return dest; } void nvram_write(short dest, const void *src, size_t count) { short d = dest; uchar *s = (uchar *) src; while (count--) rtc_write(d++, *s++); } #if defined(CONFIG_CMD_DATE) /* ------------------------------------------------------------------------- */ int rtc_get (struct rtc_time *tmp) { uchar save_ctrl_a; uchar sec, min, hour, mday, wday, mon, year; /* Simple: freeze the clock, read it and allow updates again */ save_ctrl_a = rtc_read(RTC_CONTROLA); /* Set the register to read the value. */ save_ctrl_a |= RTC_CA_READ; rtc_write(RTC_CONTROLA, save_ctrl_a); sec = rtc_read (RTC_SECONDS); min = rtc_read (RTC_MINUTES); hour = rtc_read (RTC_HOURS); mday = rtc_read (RTC_DAY_OF_MONTH); wday = rtc_read (RTC_DAY_OF_WEEK); mon = rtc_read (RTC_MONTH); year = rtc_read (RTC_YEAR); /* re-enable update */ save_ctrl_a &= ~RTC_CA_READ; rtc_write(RTC_CONTROLA, save_ctrl_a); #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 ); #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 return 0; } int rtc_set (struct rtc_time *tmp) { uchar save_ctrl_a; #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 save_ctrl_a = rtc_read(RTC_CONTROLA); save_ctrl_a |= RTC_CA_WRITE; rtc_write(RTC_CONTROLA, save_ctrl_a); /* disables the RTC to update the regs */ rtc_write (RTC_YEAR, bin2bcd(tmp->tm_year % 100)); rtc_write (RTC_MONTH, bin2bcd(tmp->tm_mon)); rtc_write (RTC_DAY_OF_WEEK, bin2bcd(tmp->tm_wday)); rtc_write (RTC_DAY_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 )); save_ctrl_a &= ~RTC_CA_WRITE; rtc_write(RTC_CONTROLA, save_ctrl_a); /* enables the RTC to update the regs */ return 0; } void rtc_reset (void) { uchar control_b; /* * Start oscillator here. */ control_b = rtc_read(RTC_CONTROLB); control_b &= ~RTC_CB_STOP; rtc_write(RTC_CONTROLB, control_b); } void rtc_set_watchdog(short multi, short res) { uchar wd_value; wd_value = RTC_WDS | ((multi & 0x1F) << 2) | (res & 0x3); rtc_write(RTC_WATCHDOG, wd_value); } #endif