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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
wdenk38635852002-08-27 05:55:31 +00002/*
3 * (C) Copyright 2001
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
wdenk38635852002-08-27 05:55:31 +00005 */
6
7/*
8 * RTC, Date & Time support: get and set date & time
9 */
10#include <common.h>
11#include <command.h>
Simon Glassf9951ea2015-04-20 12:37:26 -060012#include <dm.h>
wdenk38635852002-08-27 05:55:31 +000013#include <rtc.h>
Stefan Roese0dc018e2007-02-20 10:51:26 +010014#include <i2c.h>
Simon Glass401d1c42020-10-30 21:38:53 -060015#include <asm/global_data.h>
wdenk38635852002-08-27 05:55:31 +000016
Wolfgang Denkd87080b2006-03-31 18:32:53 +020017DECLARE_GLOBAL_DATA_PTR;
18
Mike Frysingerbdbc1302010-10-20 07:17:23 -040019static const char * const weekdays[] = {
wdenk38635852002-08-27 05:55:31 +000020 "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
21};
22
Wolfgang Denk2e5167c2010-10-28 20:00:11 +020023#ifdef CONFIG_NEEDS_MANUAL_RELOC
wdenk3e386912003-04-05 00:53:31 +000024#define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off))
Wolfgang Denk2e5167c2010-10-28 20:00:11 +020025#else
26#define RELOC(a) a
Peter Tyser521af042009-09-21 11:20:36 -050027#endif
wdenk3e386912003-04-05 00:53:31 +000028
Mike Frysingerbdbc1302010-10-20 07:17:23 -040029int mk_date (const char *, struct rtc_time *);
wdenk38635852002-08-27 05:55:31 +000030
Marek Vasut1a1fa242015-04-10 01:11:54 +020031static struct rtc_time default_tm = { 0, 0, 0, 1, 1, 2000, 6, 0, 0 };
32
Simon Glass09140112020-05-10 11:40:03 -060033static int do_date(struct cmd_tbl *cmdtp, int flag, int argc,
34 char *const argv[])
wdenk38635852002-08-27 05:55:31 +000035{
36 struct rtc_time tm;
37 int rcode = 0;
Simon Glassf9951ea2015-04-20 12:37:26 -060038 int old_bus __maybe_unused;
Stefan Roese0dc018e2007-02-20 10:51:26 +010039
40 /* switch to correct I2C bus */
Bin Mengffe38792015-06-23 12:18:42 +080041#ifdef CONFIG_DM_RTC
Simon Glassf9951ea2015-04-20 12:37:26 -060042 struct udevice *dev;
43
Michal Simeka1ae55e2021-07-29 12:59:12 +020044 rcode = uclass_get_device_by_seq(UCLASS_RTC, 0, &dev);
Simon Glassf9951ea2015-04-20 12:37:26 -060045 if (rcode) {
Michal Simeka1ae55e2021-07-29 12:59:12 +020046 rcode = uclass_get_device(UCLASS_RTC, 0, &dev);
47 if (rcode) {
48 printf("Cannot find RTC: err=%d\n", rcode);
49 return CMD_RET_FAILURE;
50 }
Simon Glassf9951ea2015-04-20 12:37:26 -060051 }
Tom Rini55dabcc2021-08-18 23:12:24 -040052#elif CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
Heiko Schocher3f4978c2012-01-16 21:12:24 +000053 old_bus = i2c_get_bus_num();
Tom Rini65cc0e22022-11-16 13:10:41 -050054 i2c_set_bus_num(CFG_SYS_RTC_BUS_NUM);
Heiko Schocher3f4978c2012-01-16 21:12:24 +000055#else
Stefan Roese0dc018e2007-02-20 10:51:26 +010056 old_bus = I2C_GET_BUS();
Tom Rini65cc0e22022-11-16 13:10:41 -050057 I2C_SET_BUS(CFG_SYS_RTC_BUS_NUM);
Heiko Schocher3f4978c2012-01-16 21:12:24 +000058#endif
wdenk38635852002-08-27 05:55:31 +000059
60 switch (argc) {
61 case 2: /* set date & time */
62 if (strcmp(argv[1],"reset") == 0) {
wdenk4b9206e2004-03-23 22:14:11 +000063 puts ("Reset RTC...\n");
Bin Mengffe38792015-06-23 12:18:42 +080064#ifdef CONFIG_DM_RTC
Simon Glassf9951ea2015-04-20 12:37:26 -060065 rcode = dm_rtc_reset(dev);
66 if (!rcode)
67 rcode = dm_rtc_set(dev, &default_tm);
68#else
69 rtc_reset();
Marek Vasut1a1fa242015-04-10 01:11:54 +020070 rcode = rtc_set(&default_tm);
Simon Glassf9951ea2015-04-20 12:37:26 -060071#endif
Marek Vasut1a1fa242015-04-10 01:11:54 +020072 if (rcode)
73 puts("## Failed to set date after RTC reset\n");
wdenk38635852002-08-27 05:55:31 +000074 } else {
75 /* initialize tm with current time */
Bin Mengffe38792015-06-23 12:18:42 +080076#ifdef CONFIG_DM_RTC
Simon Glassf9951ea2015-04-20 12:37:26 -060077 rcode = dm_rtc_get(dev, &tm);
78#else
79 rcode = rtc_get(&tm);
80#endif
81 if (!rcode) {
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +020082 /* insert new date & time */
Simon Glassf9951ea2015-04-20 12:37:26 -060083 if (mk_date(argv[1], &tm) != 0) {
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +020084 puts ("## Bad date format\n");
85 break;
86 }
87 /* and write to RTC */
Bin Mengffe38792015-06-23 12:18:42 +080088#ifdef CONFIG_DM_RTC
Simon Glassf9951ea2015-04-20 12:37:26 -060089 rcode = dm_rtc_set(dev, &tm);
90#else
91 rcode = rtc_set(&tm);
92#endif
93 if (rcode) {
94 printf("## Set date failed: err=%d\n",
95 rcode);
96 }
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +020097 } else {
Magnus Liljad52e3e02009-11-11 19:56:36 +010098 puts("## Get date failed\n");
wdenk38635852002-08-27 05:55:31 +000099 }
wdenk38635852002-08-27 05:55:31 +0000100 }
101 /* FALL TROUGH */
102 case 1: /* get date & time */
Bin Mengffe38792015-06-23 12:18:42 +0800103#ifdef CONFIG_DM_RTC
Simon Glassf9951ea2015-04-20 12:37:26 -0600104 rcode = dm_rtc_get(dev, &tm);
105#else
106 rcode = rtc_get(&tm);
107#endif
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +0200108 if (rcode) {
Magnus Liljad52e3e02009-11-11 19:56:36 +0100109 puts("## Get date failed\n");
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +0200110 break;
111 }
wdenk38635852002-08-27 05:55:31 +0000112
113 printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
114 tm.tm_year, tm.tm_mon, tm.tm_mday,
115 (tm.tm_wday<0 || tm.tm_wday>6) ?
wdenk3e386912003-04-05 00:53:31 +0000116 "unknown " : RELOC(weekdays[tm.tm_wday]),
wdenk38635852002-08-27 05:55:31 +0000117 tm.tm_hour, tm.tm_min, tm.tm_sec);
118
Stefan Roese0dc018e2007-02-20 10:51:26 +0100119 break;
wdenk38635852002-08-27 05:55:31 +0000120 default:
Simon Glass4c12eeb2011-12-10 08:44:01 +0000121 rcode = CMD_RET_USAGE;
wdenk38635852002-08-27 05:55:31 +0000122 }
Stefan Roese0dc018e2007-02-20 10:51:26 +0100123
124 /* switch back to original I2C bus */
Tom Rini55dabcc2021-08-18 23:12:24 -0400125#if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
Heiko Schocher3f4978c2012-01-16 21:12:24 +0000126 i2c_set_bus_num(old_bus);
Bin Mengffe38792015-06-23 12:18:42 +0800127#elif !defined(CONFIG_DM_RTC)
Stefan Roese0dc018e2007-02-20 10:51:26 +0100128 I2C_SET_BUS(old_bus);
Heiko Schocher3f4978c2012-01-16 21:12:24 +0000129#endif
Stefan Roese0dc018e2007-02-20 10:51:26 +0100130
Simon Glassf9951ea2015-04-20 12:37:26 -0600131 return rcode ? CMD_RET_FAILURE : 0;
wdenk38635852002-08-27 05:55:31 +0000132}
133
134/*
135 * simple conversion of two-digit string with error checking
136 */
Mike Frysingerbdbc1302010-10-20 07:17:23 -0400137static int cnvrt2 (const char *str, int *valp)
wdenk38635852002-08-27 05:55:31 +0000138{
139 int val;
140
141 if ((*str < '0') || (*str > '9'))
142 return (-1);
143
144 val = *str - '0';
145
146 ++str;
147
148 if ((*str < '0') || (*str > '9'))
149 return (-1);
150
151 *valp = 10 * val + (*str - '0');
152
153 return (0);
154}
155
156/*
157 * Convert date string: MMDDhhmm[[CC]YY][.ss]
158 *
159 * Some basic checking for valid values is done, but this will not catch
160 * all possible error conditions.
161 */
Mike Frysingerbdbc1302010-10-20 07:17:23 -0400162int mk_date (const char *datestr, struct rtc_time *tmp)
wdenk38635852002-08-27 05:55:31 +0000163{
164 int len, val;
165 char *ptr;
166
Roman Kapl44ac80e2019-02-08 10:01:02 +0100167 ptr = strchr(datestr, '.');
168 len = strlen(datestr);
wdenk38635852002-08-27 05:55:31 +0000169
170 /* Set seconds */
171 if (ptr) {
172 int sec;
173
Roman Kapl44ac80e2019-02-08 10:01:02 +0100174 ptr++;
wdenk38635852002-08-27 05:55:31 +0000175 if ((len - (ptr - datestr)) != 2)
176 return (-1);
177
Roman Kapl44ac80e2019-02-08 10:01:02 +0100178 len -= 3;
wdenk38635852002-08-27 05:55:31 +0000179
180 if (cnvrt2 (ptr, &sec))
181 return (-1);
182
183 tmp->tm_sec = sec;
184 } else {
185 tmp->tm_sec = 0;
186 }
187
188 if (len == 12) { /* MMDDhhmmCCYY */
189 int year, century;
190
191 if (cnvrt2 (datestr+ 8, &century) ||
192 cnvrt2 (datestr+10, &year) ) {
193 return (-1);
194 }
195 tmp->tm_year = 100 * century + year;
196 } else if (len == 10) { /* MMDDhhmmYY */
197 int year, century;
198
199 century = tmp->tm_year / 100;
200 if (cnvrt2 (datestr+ 8, &year))
201 return (-1);
202 tmp->tm_year = 100 * century + year;
203 }
204
205 switch (len) {
206 case 8: /* MMDDhhmm */
207 /* fall thru */
208 case 10: /* MMDDhhmmYY */
209 /* fall thru */
210 case 12: /* MMDDhhmmCCYY */
211 if (cnvrt2 (datestr+0, &val) ||
212 val > 12) {
213 break;
214 }
215 tmp->tm_mon = val;
216 if (cnvrt2 (datestr+2, &val) ||
217 val > ((tmp->tm_mon==2) ? 29 : 31)) {
218 break;
219 }
220 tmp->tm_mday = val;
221
222 if (cnvrt2 (datestr+4, &val) ||
223 val > 23) {
224 break;
225 }
226 tmp->tm_hour = val;
227
228 if (cnvrt2 (datestr+6, &val) ||
229 val > 59) {
230 break;
231 }
232 tmp->tm_min = val;
233
234 /* calculate day of week */
Simon Glass199e87c2015-04-20 12:37:17 -0600235 rtc_calc_weekday(tmp);
wdenk38635852002-08-27 05:55:31 +0000236
237 return (0);
238 default:
239 break;
240 }
241
242 return (-1);
243}
244
wdenk8bde7f72003-06-27 21:31:46 +0000245/***************************************************/
246
wdenk0d498392003-07-01 21:06:45 +0000247U_BOOT_CMD(
248 date, 2, 1, do_date,
Peter Tyser2fb26042009-01-27 18:03:12 -0600249 "get/set/reset date & time",
wdenk8bde7f72003-06-27 21:31:46 +0000250 "[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n"
251 " - without arguments: print date & time\n"
252 " - with numeric argument: set the system date & time\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +0200253 " - with 'reset' argument: reset the RTC"
wdenk8bde7f72003-06-27 21:31:46 +0000254);