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git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_date.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * RTC, Date & Time support: get and set date & time
32 DECLARE_GLOBAL_DATA_PTR
;
34 const char *weekdays
[] = {
35 "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
38 #define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
40 int mk_date (char *, struct rtc_time
*);
42 int do_date (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
48 /* switch to correct I2C bus */
49 old_bus
= I2C_GET_BUS();
50 I2C_SET_BUS(CONFIG_SYS_RTC_BUS_NUM
);
53 case 2: /* set date & time */
54 if (strcmp(argv
[1],"reset") == 0) {
55 puts ("Reset RTC...\n");
58 /* initialize tm with current time */
59 rcode
= rtc_get (&tm
);
62 /* insert new date & time */
63 if (mk_date (argv
[1], &tm
) != 0) {
64 puts ("## Bad date format\n");
67 /* and write to RTC */
68 rcode
= rtc_set (&tm
);
70 puts("## Set date failled\n");
72 puts("## Get date failled\n");
76 case 1: /* get date & time */
77 rcode
= rtc_get (&tm
);
80 puts("## Get date failled\n");
84 printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
85 tm
.tm_year
, tm
.tm_mon
, tm
.tm_mday
,
86 (tm
.tm_wday
<0 || tm
.tm_wday
>6) ?
87 "unknown " : RELOC(weekdays
[tm
.tm_wday
]),
88 tm
.tm_hour
, tm
.tm_min
, tm
.tm_sec
);
96 /* switch back to original I2C bus */
103 * simple conversion of two-digit string with error checking
105 static int cnvrt2 (char *str
, int *valp
)
109 if ((*str
< '0') || (*str
> '9'))
116 if ((*str
< '0') || (*str
> '9'))
119 *valp
= 10 * val
+ (*str
- '0');
125 * Convert date string: MMDDhhmm[[CC]YY][.ss]
127 * Some basic checking for valid values is done, but this will not catch
128 * all possible error conditions.
130 int mk_date (char *datestr
, struct rtc_time
*tmp
)
135 ptr
= strchr (datestr
,'.');
136 len
= strlen (datestr
);
143 if ((len
- (ptr
- datestr
)) != 2)
146 len
= strlen (datestr
);
148 if (cnvrt2 (ptr
, &sec
))
156 if (len
== 12) { /* MMDDhhmmCCYY */
159 if (cnvrt2 (datestr
+ 8, ¢ury
) ||
160 cnvrt2 (datestr
+10, &year
) ) {
163 tmp
->tm_year
= 100 * century
+ year
;
164 } else if (len
== 10) { /* MMDDhhmmYY */
167 century
= tmp
->tm_year
/ 100;
168 if (cnvrt2 (datestr
+ 8, &year
))
170 tmp
->tm_year
= 100 * century
+ year
;
174 case 8: /* MMDDhhmm */
176 case 10: /* MMDDhhmmYY */
178 case 12: /* MMDDhhmmCCYY */
179 if (cnvrt2 (datestr
+0, &val
) ||
184 if (cnvrt2 (datestr
+2, &val
) ||
185 val
> ((tmp
->tm_mon
==2) ? 29 : 31)) {
190 if (cnvrt2 (datestr
+4, &val
) ||
196 if (cnvrt2 (datestr
+6, &val
) ||
202 /* calculate day of week */
213 /***************************************************/
217 "get/set/reset date & time",
218 "[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
219 " - without arguments: print date & time\n"
220 " - with numeric argument: set the system date & time\n"
221 " - with 'reset' argument: reset the RTC"