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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>
Stefan Roese0dc018e2007-02-20 10:51:26 +010030#include <i2c.h>
wdenk38635852002-08-27 05:55:31 +000031
Wolfgang Denkd87080b2006-03-31 18:32:53 +020032DECLARE_GLOBAL_DATA_PTR;
33
wdenk38635852002-08-27 05:55:31 +000034#if (CONFIG_COMMANDS & CFG_CMD_DATE)
35
36const char *weekdays[] = {
37 "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
38};
39
wdenk3e386912003-04-05 00:53:31 +000040#define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
41
wdenk38635852002-08-27 05:55:31 +000042int mk_date (char *, struct rtc_time *);
43
44int do_date (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
45{
46 struct rtc_time tm;
47 int rcode = 0;
Stefan Roese0dc018e2007-02-20 10:51:26 +010048 int old_bus;
49
50 /* switch to correct I2C bus */
51 old_bus = I2C_GET_BUS();
52 I2C_SET_BUS(CFG_RTC_BUS_NUM);
wdenk38635852002-08-27 05:55:31 +000053
54 switch (argc) {
55 case 2: /* set date & time */
56 if (strcmp(argv[1],"reset") == 0) {
wdenk4b9206e2004-03-23 22:14:11 +000057 puts ("Reset RTC...\n");
wdenk38635852002-08-27 05:55:31 +000058 rtc_reset ();
59 } else {
60 /* initialize tm with current time */
61 rtc_get (&tm);
62 /* insert new date & time */
63 if (mk_date (argv[1], &tm) != 0) {
wdenk4b9206e2004-03-23 22:14:11 +000064 puts ("## Bad date format\n");
Stefan Roese0dc018e2007-02-20 10:51:26 +010065 break;
wdenk38635852002-08-27 05:55:31 +000066 }
67 /* and write to RTC */
68 rtc_set (&tm);
69 }
70 /* FALL TROUGH */
71 case 1: /* get date & time */
72 rtc_get (&tm);
73
74 printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
75 tm.tm_year, tm.tm_mon, tm.tm_mday,
76 (tm.tm_wday<0 || tm.tm_wday>6) ?
wdenk3e386912003-04-05 00:53:31 +000077 "unknown " : RELOC(weekdays[tm.tm_wday]),
wdenk38635852002-08-27 05:55:31 +000078 tm.tm_hour, tm.tm_min, tm.tm_sec);
79
Stefan Roese0dc018e2007-02-20 10:51:26 +010080 break;
wdenk38635852002-08-27 05:55:31 +000081 default:
82 printf ("Usage:\n%s\n", cmdtp->usage);
83 rcode = 1;
84 }
Stefan Roese0dc018e2007-02-20 10:51:26 +010085
86 /* switch back to original I2C bus */
87 I2C_SET_BUS(old_bus);
88
wdenk38635852002-08-27 05:55:31 +000089 return rcode;
90}
91
92/*
93 * simple conversion of two-digit string with error checking
94 */
95static int cnvrt2 (char *str, int *valp)
96{
97 int val;
98
99 if ((*str < '0') || (*str > '9'))
100 return (-1);
101
102 val = *str - '0';
103
104 ++str;
105
106 if ((*str < '0') || (*str > '9'))
107 return (-1);
108
109 *valp = 10 * val + (*str - '0');
110
111 return (0);
112}
113
114/*
115 * Convert date string: MMDDhhmm[[CC]YY][.ss]
116 *
117 * Some basic checking for valid values is done, but this will not catch
118 * all possible error conditions.
119 */
120int mk_date (char *datestr, struct rtc_time *tmp)
121{
122 int len, val;
123 char *ptr;
124
125 ptr = strchr (datestr,'.');
126 len = strlen (datestr);
127
128 /* Set seconds */
129 if (ptr) {
130 int sec;
131
132 *ptr++ = '\0';
133 if ((len - (ptr - datestr)) != 2)
134 return (-1);
135
136 len = strlen (datestr);
137
138 if (cnvrt2 (ptr, &sec))
139 return (-1);
140
141 tmp->tm_sec = sec;
142 } else {
143 tmp->tm_sec = 0;
144 }
145
146 if (len == 12) { /* MMDDhhmmCCYY */
147 int year, century;
148
149 if (cnvrt2 (datestr+ 8, &century) ||
150 cnvrt2 (datestr+10, &year) ) {
151 return (-1);
152 }
153 tmp->tm_year = 100 * century + year;
154 } else if (len == 10) { /* MMDDhhmmYY */
155 int year, century;
156
157 century = tmp->tm_year / 100;
158 if (cnvrt2 (datestr+ 8, &year))
159 return (-1);
160 tmp->tm_year = 100 * century + year;
161 }
162
163 switch (len) {
164 case 8: /* MMDDhhmm */
165 /* fall thru */
166 case 10: /* MMDDhhmmYY */
167 /* fall thru */
168 case 12: /* MMDDhhmmCCYY */
169 if (cnvrt2 (datestr+0, &val) ||
170 val > 12) {
171 break;
172 }
173 tmp->tm_mon = val;
174 if (cnvrt2 (datestr+2, &val) ||
175 val > ((tmp->tm_mon==2) ? 29 : 31)) {
176 break;
177 }
178 tmp->tm_mday = val;
179
180 if (cnvrt2 (datestr+4, &val) ||
181 val > 23) {
182 break;
183 }
184 tmp->tm_hour = val;
185
186 if (cnvrt2 (datestr+6, &val) ||
187 val > 59) {
188 break;
189 }
190 tmp->tm_min = val;
191
192 /* calculate day of week */
193 GregorianDay (tmp);
194
195 return (0);
196 default:
197 break;
198 }
199
200 return (-1);
201}
202
wdenk8bde7f72003-06-27 21:31:46 +0000203/***************************************************/
204
wdenk0d498392003-07-01 21:06:45 +0000205U_BOOT_CMD(
206 date, 2, 1, do_date,
wdenk8bde7f72003-06-27 21:31:46 +0000207 "date - get/set/reset date & time\n",
208 "[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
209 " - without arguments: print date & time\n"
210 " - with numeric argument: set the system date & time\n"
211 " - with 'reset' argument: reset the RTC\n"
212);
213
wdenk38635852002-08-27 05:55:31 +0000214#endif /* CFG_CMD_DATE */