2 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
3 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
5 * SPDX-License-Identifier: GPL-2.0+
10 #if defined(CONFIG_CMD_DATE)
14 #include <asm/immap.h>
19 #ifndef CONFIG_SYS_MCFRTC_BASE
20 #error RTC_BASE is not defined!
23 #define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
24 #define STARTOFTIME 1970
26 int rtc_get(struct rtc_time *tmp)
28 volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);
30 int rtc_days, rtc_hrs, rtc_mins;
34 rtc_hrs = rtc->hourmin >> 8;
35 rtc_mins = RTC_HOURMIN_MINUTES(rtc->hourmin);
37 tim = (rtc_days * 24) + rtc_hrs;
38 tim = (tim * 60) + rtc_mins;
39 tim = (tim * 60) + rtc->seconds;
47 printf("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
48 tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
49 tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
55 int rtc_set(struct rtc_time *tmp)
57 volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);
59 static int month_days[12] = {
60 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
64 if (tmp->tm_year > 2037) {
65 printf("Unable to handle. Exceeding integer limitation!\n");
69 printf("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
70 tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
71 tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
74 /* calculate days by years */
75 for (i = STARTOFTIME, days = 0; i < tmp->tm_year; i++) {
76 days += 365 + isleap(i);
79 /* calculate days by months */
80 months = tmp->tm_mon - 1;
81 for (i = 0; i < months; i++) {
82 days += month_days[i];
88 days += tmp->tm_mday - 1;
91 rtc->hourmin = (tmp->tm_hour << 8) | tmp->tm_min;
92 rtc->seconds = tmp->tm_sec;
99 volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE);
101 if ((rtc->cr & RTC_CR_EN) == 0) {
102 printf("real-time-clock was stopped. Now starting...\n");
103 rtc->cr |= RTC_CR_EN;
106 rtc->cr |= RTC_CR_SWR;
109 #endif /* CONFIG_MCFRTC && CONFIG_CMD_DATE */