shell: rtc: add commands to get and set the date

Makefile

@@ -44,6 +44,7 @@ obj-y += source/shell/cmd.o
 obj-y += source/shell/flash.o
 obj-y += source/shell/ftl.o
 obj-y += source/shell/mufs.o
+obj-y += source/shell/rtc.o
 
 obj = $(addprefix $(BUILD)/, $(obj-y))
 

source/shell/rtc.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <time.h>
+
+#include <console.h>
+#include <rtc.h>
+
+#include <shell/rtc.h>
+
+void shell_date(struct console *con, const char **argv, size_t argc)
+{
+	struct tm now;
+
+	(void)argv;
+	(void)argc;
+
+	rtc_get_time(&now);
+
+	fprintf(con->fp, "%02d:%02d:%02d %02d-%02d-%d\n",
+		now.tm_hour, now.tm_min, now.tm_sec,
+		now.tm_mday, now.tm_mon + 1, now.tm_year + 1900);
+}
+
+void shell_time(struct console *con, const char **argv, size_t argc)
+{
+	struct tm now;
+
+	(void)argv;
+	(void)argc;
+
+	rtc_get_time(&now);
+
+	fprintf(con->fp, "%ld\n", mktime(&now));
+}
+
+void shell_set_date(struct console *con, const char **argv, size_t argc)
+{
+	struct tm now;
+
+	if (argc < 2) {
+		fprintf(con->fp, "usage: set-date <format> <date>\n");
+		return;
+	}
+
+	rtc_get_time(&now);
+
+	if (!strptime(argv[1], argv[0], &now)) {
+		fprintf(con->fp, "error\n");
+		return;
+	}
+
+	rtc_init(&now);
+
+	fprintf(con->fp, "%02d:%02d:%02d %02d-%02d-%d\n",
+		now.tm_hour, now.tm_min, now.tm_sec,
+		now.tm_mday, now.tm_mon + 1, now.tm_year + 1900);
+}