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https://github.com/AsahiLinux/u-boot
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b73a19e160
Modify the RTC API to provide one a status for the time reported by
the rtc_get() function:
0 - a reliable time is guaranteed,
< 0 - a reliable time isn't guaranteed (power fault, clock issues,
and so on).
The RTC chip drivers are responsible for providing this info if the
corresponding chip supports such functionality. If not - always
report that the time is reliable.
The POST RTC test was modified to detect the RTC faults utilizing
this new rtc_get() feature.
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
75 lines
2 KiB
C
75 lines
2 KiB
C
/*
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* (C) Copyright 2001
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Date & Time support for internal RTC of MPC8xx
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*/
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/*#define DEBUG*/
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#include <common.h>
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#include <command.h>
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#include <rtc.h>
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#if defined(CONFIG_RTC_MPC8xx) && defined(CONFIG_CMD_DATE)
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/* ------------------------------------------------------------------------- */
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int rtc_get (struct rtc_time *tmp)
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{
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volatile immap_t *immr = (immap_t *)CFG_IMMR;
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ulong tim;
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tim = immr->im_sit.sit_rtc;
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to_tm (tim, tmp);
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debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
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tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
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return 0;
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}
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void rtc_set (struct rtc_time *tmp)
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{
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volatile immap_t *immr = (immap_t *)CFG_IMMR;
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ulong tim;
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debug ( "Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
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tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
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tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
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tim = mktime (tmp->tm_year, tmp->tm_mon, tmp->tm_mday,
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tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
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immr->im_sitk.sitk_rtck = KAPWR_KEY;
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immr->im_sit.sit_rtc = tim;
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}
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void rtc_reset (void)
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{
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return; /* nothing to do */
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}
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#endif
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