--- /dev/null
+#ifndef _IPXE_RTC_TIME_H
+#define _IPXE_RTC_TIME_H
+
+/** @file
+ *
+ * RTC-based time source
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#ifdef TIME_RTC
+#define TIME_PREFIX_rtc
+#else
+#define TIME_PREFIX_rtc __rtc_
+#endif
+
+#endif /* _IPXE_RTC_TIME_H */