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249 lines
4.8 KiB
249 lines
4.8 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2001 |
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* Wolfgang Denk, DENX Software Engineering, [email protected]. |
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*/ |
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/* |
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* RTC, Date & Time support: get and set date & time |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <dm.h> |
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#include <rtc.h> |
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#include <i2c.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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static const char * const weekdays[] = { |
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"Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur", |
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}; |
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#ifdef CONFIG_NEEDS_MANUAL_RELOC |
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#define RELOC(a) ((typeof(a))((unsigned long)(a) + gd->reloc_off)) |
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#else |
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#define RELOC(a) a |
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#endif |
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int mk_date (const char *, struct rtc_time *); |
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static struct rtc_time default_tm = { 0, 0, 0, 1, 1, 2000, 6, 0, 0 }; |
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static int do_date(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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struct rtc_time tm; |
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int rcode = 0; |
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int old_bus __maybe_unused; |
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/* switch to correct I2C bus */ |
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#ifdef CONFIG_DM_RTC |
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struct udevice *dev; |
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rcode = uclass_get_device(UCLASS_RTC, 0, &dev); |
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if (rcode) { |
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printf("Cannot find RTC: err=%d\n", rcode); |
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return CMD_RET_FAILURE; |
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} |
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#elif defined(CONFIG_SYS_I2C) |
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old_bus = i2c_get_bus_num(); |
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i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM); |
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#else |
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old_bus = I2C_GET_BUS(); |
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I2C_SET_BUS(CONFIG_SYS_RTC_BUS_NUM); |
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#endif |
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switch (argc) { |
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case 2: /* set date & time */ |
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if (strcmp(argv[1],"reset") == 0) { |
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puts ("Reset RTC...\n"); |
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#ifdef CONFIG_DM_RTC |
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rcode = dm_rtc_reset(dev); |
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if (!rcode) |
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rcode = dm_rtc_set(dev, &default_tm); |
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#else |
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rtc_reset(); |
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rcode = rtc_set(&default_tm); |
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#endif |
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if (rcode) |
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puts("## Failed to set date after RTC reset\n"); |
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} else { |
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/* initialize tm with current time */ |
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#ifdef CONFIG_DM_RTC |
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rcode = dm_rtc_get(dev, &tm); |
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#else |
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rcode = rtc_get(&tm); |
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#endif |
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if (!rcode) { |
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/* insert new date & time */ |
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if (mk_date(argv[1], &tm) != 0) { |
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puts ("## Bad date format\n"); |
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break; |
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} |
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/* and write to RTC */ |
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#ifdef CONFIG_DM_RTC |
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rcode = dm_rtc_set(dev, &tm); |
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#else |
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rcode = rtc_set(&tm); |
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#endif |
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if (rcode) { |
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printf("## Set date failed: err=%d\n", |
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rcode); |
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} |
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} else { |
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puts("## Get date failed\n"); |
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} |
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} |
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/* FALL TROUGH */ |
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case 1: /* get date & time */ |
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#ifdef CONFIG_DM_RTC |
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rcode = dm_rtc_get(dev, &tm); |
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#else |
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rcode = rtc_get(&tm); |
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#endif |
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if (rcode) { |
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puts("## Get date failed\n"); |
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break; |
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} |
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printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n", |
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tm.tm_year, tm.tm_mon, tm.tm_mday, |
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(tm.tm_wday<0 || tm.tm_wday>6) ? |
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"unknown " : RELOC(weekdays[tm.tm_wday]), |
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tm.tm_hour, tm.tm_min, tm.tm_sec); |
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break; |
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default: |
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rcode = CMD_RET_USAGE; |
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} |
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/* switch back to original I2C bus */ |
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#ifdef CONFIG_SYS_I2C |
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i2c_set_bus_num(old_bus); |
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#elif !defined(CONFIG_DM_RTC) |
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I2C_SET_BUS(old_bus); |
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#endif |
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return rcode ? CMD_RET_FAILURE : 0; |
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} |
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/* |
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* simple conversion of two-digit string with error checking |
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*/ |
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static int cnvrt2 (const char *str, int *valp) |
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{ |
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int val; |
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if ((*str < '0') || (*str > '9')) |
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return (-1); |
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val = *str - '0'; |
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++str; |
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if ((*str < '0') || (*str > '9')) |
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return (-1); |
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*valp = 10 * val + (*str - '0'); |
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return (0); |
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} |
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/* |
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* Convert date string: MMDDhhmm[[CC]YY][.ss] |
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* |
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* Some basic checking for valid values is done, but this will not catch |
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* all possible error conditions. |
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*/ |
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int mk_date (const char *datestr, struct rtc_time *tmp) |
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{ |
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int len, val; |
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char *ptr; |
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ptr = strchr (datestr,'.'); |
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len = strlen (datestr); |
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/* Set seconds */ |
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if (ptr) { |
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int sec; |
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*ptr++ = '\0'; |
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if ((len - (ptr - datestr)) != 2) |
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return (-1); |
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len = strlen (datestr); |
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if (cnvrt2 (ptr, &sec)) |
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return (-1); |
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tmp->tm_sec = sec; |
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} else { |
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tmp->tm_sec = 0; |
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} |
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if (len == 12) { /* MMDDhhmmCCYY */ |
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int year, century; |
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if (cnvrt2 (datestr+ 8, ¢ury) || |
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cnvrt2 (datestr+10, &year) ) { |
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return (-1); |
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} |
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tmp->tm_year = 100 * century + year; |
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} else if (len == 10) { /* MMDDhhmmYY */ |
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int year, century; |
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century = tmp->tm_year / 100; |
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if (cnvrt2 (datestr+ 8, &year)) |
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return (-1); |
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tmp->tm_year = 100 * century + year; |
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} |
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switch (len) { |
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case 8: /* MMDDhhmm */ |
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/* fall thru */ |
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case 10: /* MMDDhhmmYY */ |
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/* fall thru */ |
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case 12: /* MMDDhhmmCCYY */ |
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if (cnvrt2 (datestr+0, &val) || |
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val > 12) { |
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break; |
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} |
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tmp->tm_mon = val; |
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if (cnvrt2 (datestr+2, &val) || |
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val > ((tmp->tm_mon==2) ? 29 : 31)) { |
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break; |
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} |
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tmp->tm_mday = val; |
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if (cnvrt2 (datestr+4, &val) || |
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val > 23) { |
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break; |
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} |
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tmp->tm_hour = val; |
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if (cnvrt2 (datestr+6, &val) || |
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val > 59) { |
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break; |
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} |
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tmp->tm_min = val; |
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/* calculate day of week */ |
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rtc_calc_weekday(tmp); |
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return (0); |
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default: |
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break; |
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} |
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return (-1); |
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} |
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/***************************************************/ |
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U_BOOT_CMD( |
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date, 2, 1, do_date, |
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"get/set/reset date & time", |
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"[MMDDhhmm[[CC]YY][.ss]]\ndate reset\n" |
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" - without arguments: print date & time\n" |
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" - with numeric argument: set the system date & time\n" |
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" - with 'reset' argument: reset the RTC" |
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);
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