1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* (C) Copyright 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* RTC, Date & Time support: get and set date & time
*/
#include <common.h>
#include <command.h>
#include <rtc.h>
#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
const char *weekdays[] = {
"Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
};
#ifdef CONFIG_RELOC_FIXUP_WORKS
#define RELOC(a) a
#else
#define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
#endif
int mk_date (char *, struct rtc_time *);
int do_date (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
struct rtc_time tm;
int rcode = 0;
int old_bus;
/* switch to correct I2C bus */
old_bus = I2C_GET_BUS();
I2C_SET_BUS(CONFIG_SYS_RTC_BUS_NUM);
switch (argc) {
case 2: /* set date & time */
if (strcmp(argv[1],"reset") == 0) {
puts ("Reset RTC...\n");
rtc_reset ();
} else {
/* initialize tm with current time */
rcode = rtc_get (&tm);
if(!rcode) {
/* insert new date & time */
if (mk_date (argv[1], &tm) != 0) {
puts ("## Bad date format\n");
break;
}
/* and write to RTC */
rcode = rtc_set (&tm);
if(rcode)
puts("## Set date failled\n");
} else {
puts("## Get date failled\n");
}
}
/* FALL TROUGH */
case 1: /* get date & time */
rcode = rtc_get (&tm);
if (rcode) {
puts("## Get date failled\n");
break;
}
printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
tm.tm_year, tm.tm_mon, tm.tm_mday,
(tm.tm_wday<0 || tm.tm_wday>6) ?
"unknown " : RELOC(weekdays[tm.tm_wday]),
tm.tm_hour, tm.tm_min, tm.tm_sec);
break;
default:
cmd_usage(cmdtp);
rcode = 1;
}
/* switch back to original I2C bus */
I2C_SET_BUS(old_bus);
return rcode;
}
/*
* simple conversion of two-digit string with error checking
*/
static int cnvrt2 (char *str, int *valp)
{
int val;
if ((*str < '0') || (*str > '9'))
return (-1);
val = *str - '0';
++str;
if ((*str < '0') || (*str > '9'))
return (-1);
*valp = 10 * val + (*str - '0');
return (0);
}
/*
* Convert date string: MMDDhhmm[[CC]YY][.ss]
*
* Some basic checking for valid values is done, but this will not catch
* all possible error conditions.
*/
int mk_date (char *datestr, struct rtc_time *tmp)
{
int len, val;
char *ptr;
ptr = strchr (datestr,'.');
len = strlen (datestr);
/* Set seconds */
if (ptr) {
int sec;
*ptr++ = '\0';
if ((len - (ptr - datestr)) != 2)
return (-1);
len = strlen (datestr);
if (cnvrt2 (ptr, &sec))
return (-1);
tmp->tm_sec = sec;
} else {
tmp->tm_sec = 0;
}
if (len == 12) { /* MMDDhhmmCCYY */
int year, century;
if (cnvrt2 (datestr+ 8, ¢ury) ||
cnvrt2 (datestr+10, &year) ) {
return (-1);
}
tmp->tm_year = 100 * century + year;
} else if (len == 10) { /* MMDDhhmmYY */
int year, century;
century = tmp->tm_year / 100;
if (cnvrt2 (datestr+ 8, &year))
return (-1);
tmp->tm_year = 100 * century + year;
}
switch (len) {
case 8: /* MMDDhhmm */
/* fall thru */
case 10: /* MMDDhhmmYY */
/* fall thru */
case 12: /* MMDDhhmmCCYY */
if (cnvrt2 (datestr+0, &val) ||
val > 12) {
break;
}
tmp->tm_mon = val;
if (cnvrt2 (datestr+2, &val) ||
val > ((tmp->tm_mon==2) ? 29 : 31)) {
break;
}
tmp->tm_mday = val;
if (cnvrt2 (datestr+4, &val) ||
val > 23) {
break;
}
tmp->tm_hour = val;
if (cnvrt2 (datestr+6, &val) ||
val > 59) {
break;
}
tmp->tm_min = val;
/* calculate day of week */
GregorianDay (tmp);
return (0);
default:
break;
}
return (-1);
}
/***************************************************/
U_BOOT_CMD(
date, 2, 1, do_date,
"get/set/reset date & time",
"[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
" - without arguments: print date & time\n"
" - with numeric argument: set the system date & time\n"
" - with 'reset' argument: reset the RTC"
);
|
