diff options
Diffstat (limited to 'commands/hwclock.c')
| -rw-r--r-- | commands/hwclock.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/commands/hwclock.c b/commands/hwclock.c index a1f5293122..6a0fe0342a 100644 --- a/commands/hwclock.c +++ b/commands/hwclock.c @@ -4,6 +4,7 @@ #include <linux/err.h> #include <linux/ctype.h> #include <rtc.h> +#include <sntp.h> #include <linux/rtc.h> #include <string.h> #include <environment.h> @@ -92,9 +93,11 @@ static int do_hwclock(int argc, char *argv[]) char *env_name = NULL; int opt; int set = 0; + int ret; + int ntp_to_hw = 0; + char *ntpserver = NULL; - while ((opt = getopt(argc, argv, "f:s:e:")) > 0) { - int ret; + while ((opt = getopt(argc, argv, "f:s:e:n:")) > 0) { switch (opt) { case 'f': @@ -116,6 +119,10 @@ static int do_hwclock(int argc, char *argv[]) case 'e': env_name = optarg; break; + case 'n': + ntp_to_hw = 1; + ntpserver = optarg; + break; } } @@ -124,11 +131,29 @@ static int do_hwclock(int argc, char *argv[]) return PTR_ERR(r); if (set) { - rtc_set_time(r, &stm); - return 0; + return rtc_set_time(r, &stm); + } + + if (ntp_to_hw) { + s64 now; + + if (!IS_ENABLED(CONFIG_NET_SNTP)) { + printf("SNTP support is disabled\n"); + return 1; + } + + now = sntp(ntpserver); + if (now < 0) + return now; + + rtc_time_to_tm(now, &stm); + printf("%s\n", time_str(&stm)); + return rtc_set_time(r, &stm); } - rtc_read_time(r, &tm); + ret = rtc_read_time(r, &tm); + if (ret < 0) + return ret; if (env_name) { unsigned long time; @@ -138,9 +163,7 @@ static int do_hwclock(int argc, char *argv[]) snprintf(t, 12, "%lu", time); setenv(env_name, t); } else { - printf("%02d:%02d:%02d %02d-%02d-%04d\n", - tm.tm_hour, tm.tm_min, tm.tm_sec, - tm.tm_mday, tm.tm_mon + 1, tm.tm_year + 1900); + printf("%s\n", time_str(&tm)); } return 0; @@ -150,6 +173,7 @@ BAREBOX_CMD_HELP_START(hwclock) BAREBOX_CMD_HELP_TEXT("Options:") BAREBOX_CMD_HELP_OPT ("-f NAME\t\t\t", "RTC device name (default rtc0)") BAREBOX_CMD_HELP_OPT ("-e VARNAME\t\t", "store RTC readout into variable VARNAME") +BAREBOX_CMD_HELP_OPT ("-n NTPSERVER\t", "set RTC from NTP server") BAREBOX_CMD_HELP_OPT ("-s ccyymmddHHMM[.SS]\t", "set time") BAREBOX_CMD_HELP_END |