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git.ipfire.org Git - 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
31 #if (CONFIG_COMMANDS & CFG_CMD_DATE)
33 const char *weekdays
[] = {
34 "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
37 #define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
39 int mk_date (char *, struct rtc_time
*);
41 int do_date (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
43 DECLARE_GLOBAL_DATA_PTR
;
48 case 2: /* set date & time */
49 if (strcmp(argv
[1],"reset") == 0) {
50 printf ("Reset RTC...\n");
53 /* initialize tm with current time */
55 /* insert new date & time */
56 if (mk_date (argv
[1], &tm
) != 0) {
57 printf ("## Bad date format\n");
60 /* and write to RTC */
64 case 1: /* get date & time */
67 printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
68 tm
.tm_year
, tm
.tm_mon
, tm
.tm_mday
,
69 (tm
.tm_wday
<0 || tm
.tm_wday
>6) ?
70 "unknown " : RELOC(weekdays
[tm
.tm_wday
]),
71 tm
.tm_hour
, tm
.tm_min
, tm
.tm_sec
);
75 printf ("Usage:\n%s\n", cmdtp
->usage
);
82 * simple conversion of two-digit string with error checking
84 static int cnvrt2 (char *str
, int *valp
)
88 if ((*str
< '0') || (*str
> '9'))
95 if ((*str
< '0') || (*str
> '9'))
98 *valp
= 10 * val
+ (*str
- '0');
104 * Convert date string: MMDDhhmm[[CC]YY][.ss]
106 * Some basic checking for valid values is done, but this will not catch
107 * all possible error conditions.
109 int mk_date (char *datestr
, struct rtc_time
*tmp
)
114 ptr
= strchr (datestr
,'.');
115 len
= strlen (datestr
);
122 if ((len
- (ptr
- datestr
)) != 2)
125 len
= strlen (datestr
);
127 if (cnvrt2 (ptr
, &sec
))
135 if (len
== 12) { /* MMDDhhmmCCYY */
138 if (cnvrt2 (datestr
+ 8, ¢ury
) ||
139 cnvrt2 (datestr
+10, &year
) ) {
142 tmp
->tm_year
= 100 * century
+ year
;
143 } else if (len
== 10) { /* MMDDhhmmYY */
146 century
= tmp
->tm_year
/ 100;
147 if (cnvrt2 (datestr
+ 8, &year
))
149 tmp
->tm_year
= 100 * century
+ year
;
153 case 8: /* MMDDhhmm */
155 case 10: /* MMDDhhmmYY */
157 case 12: /* MMDDhhmmCCYY */
158 if (cnvrt2 (datestr
+0, &val
) ||
163 if (cnvrt2 (datestr
+2, &val
) ||
164 val
> ((tmp
->tm_mon
==2) ? 29 : 31)) {
169 if (cnvrt2 (datestr
+4, &val
) ||
175 if (cnvrt2 (datestr
+6, &val
) ||
181 /* calculate day of week */
192 /***************************************************/
194 cmd_tbl_t
U_BOOT_CMD(DATE
) = MK_CMD_ENTRY(
195 "date", 2, 1, do_date
,
196 "date - get/set/reset date & time\n",
197 "[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
198 " - without arguments: print date & time\n"
199 " - with numeric argument: set the system date & time\n"
200 " - with 'reset' argument: reset the RTC\n"
203 #endif /* CFG_CMD_DATE */