| /* |
| * (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; |
| |
| #if defined(CONFIG_CMD_DATE) |
| |
| const char *weekdays[] = { |
| "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur", |
| }; |
| |
| #define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off)) |
| |
| 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(CFG_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 */ |
| rtc_get (&tm); |
| /* insert new date & time */ |
| if (mk_date (argv[1], &tm) != 0) { |
| puts ("## Bad date format\n"); |
| break; |
| } |
| /* and write to RTC */ |
| rtc_set (&tm); |
| } |
| /* FALL TROUGH */ |
| case 1: /* get date & time */ |
| rtc_get (&tm); |
| |
| 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: |
| printf ("Usage:\n%s\n", cmdtp->usage); |
| 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, |
| "date - get/set/reset date & time\n", |
| "[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\n" |
| ); |
| |
| #endif /* CFG_CMD_DATE */ |