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https://github.com/AsahiLinux/u-boot
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06a94b3e8b
gcc does not understand /* FALL TROUGH */ and emits a warning: cmd/date.c: In function ‘do_date’: cmd/date.c:62:20: warning: this statement may fall through [-Wimplicit-fallthrough=] 62 | if (strcmp(argv[1],"reset") == 0) { | ^ cmd/date.c:102:9: note: here 102 | case 1: /* get date & time */ | ^~~~ Use the fallthrough macro instead. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Simon Glass <sjg@chromium.org>
254 lines
4.9 KiB
C
254 lines
4.9 KiB
C
// 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, wd@denx.de.
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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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#include <asm/global_data.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(struct cmd_tbl *cmdtp, int flag, int argc,
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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_by_seq(UCLASS_RTC, 0, &dev);
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if (rcode) {
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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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}
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#elif CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
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old_bus = i2c_get_bus_num();
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i2c_set_bus_num(CFG_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(CFG_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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fallthrough;
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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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#if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
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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++;
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if ((len - (ptr - datestr)) != 2)
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return (-1);
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len -= 3;
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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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