建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/include/metal/cache.h

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+/*
+ * Copyright (c) 2016, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	cache.h
+ * @brief	CACHE operation primitives for libmetal.
+ */
+
+#ifndef __METAL_CACHE__H__
+#define __METAL_CACHE__H__
+
+#include <metal/system/generic/cache.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/** \defgroup cache CACHE Interfaces
+ *  @{ */
+
+/**
+ * @brief flush specified data cache
+ *
+ * @param[in] addr start memory logical address
+ * @param[in] len  length of memory
+ *                 If addr is NULL, and len is 0,
+ *                 It will flush the whole data cache.
+ */
+static inline void metal_cache_flush(void *addr, unsigned int len)
+{
+	__metal_cache_flush(addr, len);
+}
+
+/**
+ * @brief invalidate specified data cache
+ *
+ * @param[in] addr start memory logical address
+ * @param[in] len  length of memory
+ *                 If addr is NULL, and len is 0,
+ *                 It will invalidate the whole data cache.
+ */
+static inline void metal_cache_invalidate(void *addr, unsigned int len)
+{
+	__metal_cache_invalidate(addr, len);
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __METAL_CACHE__H__ */