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wdenk38635852002-08-27 05:55:31 +00001/*
2 * (C) Copyright 2001
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * RTC, Date & Time support: get and set date & time
26 */
27#include <common.h>
28#include <command.h>
29#include <rtc.h>
30
31#if (CONFIG_COMMANDS & CFG_CMD_DATE)
32
33const char *weekdays[] = {
34 "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
35};
36
wdenk3e386912003-04-05 00:53:31 +000037#define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
38
wdenk38635852002-08-27 05:55:31 +000039int mk_date (char *, struct rtc_time *);
40
41int do_date (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
42{
wdenk3e386912003-04-05 00:53:31 +000043 DECLARE_GLOBAL_DATA_PTR;
wdenk38635852002-08-27 05:55:31 +000044 struct rtc_time tm;
45 int rcode = 0;
46
47 switch (argc) {
48 case 2: /* set date & time */
49 if (strcmp(argv[1],"reset") == 0) {
wdenk4b9206e2004-03-23 22:14:11 +000050 puts ("Reset RTC...\n");
wdenk38635852002-08-27 05:55:31 +000051 rtc_reset ();
52 } else {
53 /* initialize tm with current time */
54 rtc_get (&tm);
55 /* insert new date & time */
56 if (mk_date (argv[1], &tm) != 0) {
wdenk4b9206e2004-03-23 22:14:11 +000057 puts ("## Bad date format\n");
wdenk38635852002-08-27 05:55:31 +000058 return 1;
59 }
60 /* and write to RTC */
61 rtc_set (&tm);
62 }
63 /* FALL TROUGH */
64 case 1: /* get date & time */
65 rtc_get (&tm);
66
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) ?
wdenk3e386912003-04-05 00:53:31 +000070 "unknown " : RELOC(weekdays[tm.tm_wday]),
wdenk38635852002-08-27 05:55:31 +000071 tm.tm_hour, tm.tm_min, tm.tm_sec);
72
73 return 0;
74 default:
75 printf ("Usage:\n%s\n", cmdtp->usage);
76 rcode = 1;
77 }
78 return rcode;
79}
80
81/*
82 * simple conversion of two-digit string with error checking
83 */
84static int cnvrt2 (char *str, int *valp)
85{
86 int val;
87
88 if ((*str < '0') || (*str > '9'))
89 return (-1);
90
91 val = *str - '0';
92
93 ++str;
94
95 if ((*str < '0') || (*str > '9'))
96 return (-1);
97
98 *valp = 10 * val + (*str - '0');
99
100 return (0);
101}
102
103/*
104 * Convert date string: MMDDhhmm[[CC]YY][.ss]
105 *
106 * Some basic checking for valid values is done, but this will not catch
107 * all possible error conditions.
108 */
109int mk_date (char *datestr, struct rtc_time *tmp)
110{
111 int len, val;
112 char *ptr;
113
114 ptr = strchr (datestr,'.');
115 len = strlen (datestr);
116
117 /* Set seconds */
118 if (ptr) {
119 int sec;
120
121 *ptr++ = '\0';
122 if ((len - (ptr - datestr)) != 2)
123 return (-1);
124
125 len = strlen (datestr);
126
127 if (cnvrt2 (ptr, &sec))
128 return (-1);
129
130 tmp->tm_sec = sec;
131 } else {
132 tmp->tm_sec = 0;
133 }
134
135 if (len == 12) { /* MMDDhhmmCCYY */
136 int year, century;
137
138 if (cnvrt2 (datestr+ 8, &century) ||
139 cnvrt2 (datestr+10, &year) ) {
140 return (-1);
141 }
142 tmp->tm_year = 100 * century + year;
143 } else if (len == 10) { /* MMDDhhmmYY */
144 int year, century;
145
146 century = tmp->tm_year / 100;
147 if (cnvrt2 (datestr+ 8, &year))
148 return (-1);
149 tmp->tm_year = 100 * century + year;
150 }
151
152 switch (len) {
153 case 8: /* MMDDhhmm */
154 /* fall thru */
155 case 10: /* MMDDhhmmYY */
156 /* fall thru */
157 case 12: /* MMDDhhmmCCYY */
158 if (cnvrt2 (datestr+0, &val) ||
159 val > 12) {
160 break;
161 }
162 tmp->tm_mon = val;
163 if (cnvrt2 (datestr+2, &val) ||
164 val > ((tmp->tm_mon==2) ? 29 : 31)) {
165 break;
166 }
167 tmp->tm_mday = val;
168
169 if (cnvrt2 (datestr+4, &val) ||
170 val > 23) {
171 break;
172 }
173 tmp->tm_hour = val;
174
175 if (cnvrt2 (datestr+6, &val) ||
176 val > 59) {
177 break;
178 }
179 tmp->tm_min = val;
180
181 /* calculate day of week */
182 GregorianDay (tmp);
183
184 return (0);
185 default:
186 break;
187 }
188
189 return (-1);
190}
191
wdenk8bde7f72003-06-27 21:31:46 +0000192/***************************************************/
193
wdenk0d498392003-07-01 21:06:45 +0000194U_BOOT_CMD(
195 date, 2, 1, do_date,
wdenk8bde7f72003-06-27 21:31:46 +0000196 "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"
201);
202
wdenk38635852002-08-27 05:55:31 +0000203#endif /* CFG_CMD_DATE */