建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/system/generic/time.c

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2016, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	generic/time.c
+ * @brief	Generic libmetal time handling.
+ */
+
+#include <metal/time.h>
+
+unsigned long long metal_get_timestamp(void)
+{
+	/* TODO: Implement timestamp for generic system */
+	return 0;
+}
+