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8e585f02 | 1 | /* |
5cdc07c7 TL |
2 | * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. |
3 | * TsiChung Liew (Tsi-Chung.Liew@freescale.com) | |
8e585f02 | 4 | * |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
8e585f02 TL |
6 | */ |
7 | ||
8 | #include <common.h> | |
3e66c078 | 9 | |
871c18dd | 10 | #if defined(CONFIG_CMD_DATE) |
3e66c078 | 11 | |
8e585f02 TL |
12 | #include <command.h> |
13 | #include <rtc.h> | |
5cdc07c7 TL |
14 | #include <asm/immap.h> |
15 | #include <asm/rtc.h> | |
8e585f02 | 16 | |
8e585f02 TL |
17 | #undef RTC_DEBUG |
18 | ||
6d0f6bcf | 19 | #ifndef CONFIG_SYS_MCFRTC_BASE |
8e585f02 TL |
20 | #error RTC_BASE is not defined! |
21 | #endif | |
22 | ||
23 | #define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0) | |
24 | #define STARTOFTIME 1970 | |
25 | ||
b73a19e1 | 26 | int rtc_get(struct rtc_time *tmp) |
8e585f02 | 27 | { |
6d0f6bcf | 28 | volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE); |
8e585f02 TL |
29 | |
30 | int rtc_days, rtc_hrs, rtc_mins; | |
31 | int tim; | |
32 | ||
33 | rtc_days = rtc->days; | |
34 | rtc_hrs = rtc->hourmin >> 8; | |
35 | rtc_mins = RTC_HOURMIN_MINUTES(rtc->hourmin); | |
36 | ||
37 | tim = (rtc_days * 24) + rtc_hrs; | |
38 | tim = (tim * 60) + rtc_mins; | |
39 | tim = (tim * 60) + rtc->seconds; | |
40 | ||
41 | to_tm(tim, tmp); | |
42 | ||
43 | tmp->tm_yday = 0; | |
44 | tmp->tm_isdst = 0; | |
45 | ||
46 | #ifdef RTC_DEBUG | |
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); | |
50 | #endif | |
b73a19e1 YT |
51 | |
52 | return 0; | |
8e585f02 TL |
53 | } |
54 | ||
d1e23194 | 55 | int rtc_set(struct rtc_time *tmp) |
8e585f02 | 56 | { |
6d0f6bcf | 57 | volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE); |
8e585f02 TL |
58 | |
59 | static int month_days[12] = { | |
60 | 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 | |
61 | }; | |
62 | int days, i, months; | |
63 | ||
64 | if (tmp->tm_year > 2037) { | |
65 | printf("Unable to handle. Exceeding integer limitation!\n"); | |
66 | tmp->tm_year = 2027; | |
67 | } | |
68 | #ifdef RTC_DEBUG | |
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); | |
72 | #endif | |
73 | ||
74 | /* calculate days by years */ | |
75 | for (i = STARTOFTIME, days = 0; i < tmp->tm_year; i++) { | |
76 | days += 365 + isleap(i); | |
77 | } | |
78 | ||
79 | /* calculate days by months */ | |
80 | months = tmp->tm_mon - 1; | |
81 | for (i = 0; i < months; i++) { | |
82 | days += month_days[i]; | |
83 | ||
84 | if (i == 1) | |
85 | days += isleap(i); | |
86 | } | |
87 | ||
88 | days += tmp->tm_mday - 1; | |
89 | ||
90 | rtc->days = days; | |
91 | rtc->hourmin = (tmp->tm_hour << 8) | tmp->tm_min; | |
92 | rtc->seconds = tmp->tm_sec; | |
d1e23194 JCPV |
93 | |
94 | return 0; | |
8e585f02 TL |
95 | } |
96 | ||
97 | void rtc_reset(void) | |
98 | { | |
6d0f6bcf | 99 | volatile rtc_t *rtc = (rtc_t *) (CONFIG_SYS_MCFRTC_BASE); |
8e585f02 TL |
100 | |
101 | if ((rtc->cr & RTC_CR_EN) == 0) { | |
102 | printf("real-time-clock was stopped. Now starting...\n"); | |
103 | rtc->cr |= RTC_CR_EN; | |
104 | } | |
105 | ||
106 | rtc->cr |= RTC_CR_SWR; | |
107 | } | |
108 | ||
ab77bc54 | 109 | #endif /* CONFIG_MCFRTC && CONFIG_CMD_DATE */ |