libpayload: add time()

Change-Id: I97e393537ccc71ea454bb0d6cdbbb7ed32485f1e
Signed-off-by: Nicola Corna <nicola@corna.info>
Reviewed-on: https://review.coreboot.org/21011
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

2 files changed, 21 insertions, 6 deletions

diff --git a/payloads/libpayload/include/time.h b/payloads/libpayload/include/time.h
index 25f476c82e..42be725e31 100644
--- a/payloads/libpayload/include/time.h
+++ b/payloads/libpayload/include/time.h
@@ -44,6 +44,7 @@ struct timeval {
 	suseconds_t tv_usec; /**< Microseconds */
 };
 
+time_t time(time_t *tp);
 int gettimeofday(struct timeval *tv, void *tz);
 /** @} */
 
diff --git a/payloads/libpayload/libc/time.c b/payloads/libpayload/libc/time.c
index 4ed788fbdc..46306bb1ba 100644
--- a/payloads/libpayload/libc/time.c
+++ b/payloads/libpayload/libc/time.c
@@ -121,13 +121,12 @@ static void gettimeofday_init(void)
 #endif
 
 /**
- * Return the current time broken into a timeval structure.
+ * Return the current time expressed as seconds from 00:00:00 UTC, 1 Jan 1970.
  *
- * @param tv A pointer to a timeval structure.
- * @param tz Added for compatability - not used.
- * @return 0 for success (this function cannot return non-zero currently).
+ * @param tp When not NULL, set this to the current time in seconds.
+ * @return The current time in seconds.
  */
-int gettimeofday(struct timeval *tv, void *tz)
+time_t time(time_t *tp)
 {
 	/*
 	 * Call the gtod init when we need it - this keeps the code from
@@ -138,7 +137,22 @@ int gettimeofday(struct timeval *tv, void *tz)
 
 	update_clock();
 
-	tv->tv_sec = clock.secs;
+	if (tp)
+		*tp = clock.secs;
+
+	return clock.secs;
+}
+
+/**
+ * Return the current time broken into a timeval structure.
+ *
+ * @param tv A pointer to a timeval structure.
+ * @param tz Added for compatibility - not used.
+ * @return 0 for success (this function cannot return non-zero currently).
+ */
+int gettimeofday(struct timeval *tv, void *tz)
+{
+	tv->tv_sec = time(NULL);
 	tv->tv_usec = clock.usecs;
 
 	return 0;