建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/system/zephyr/log.c

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2018, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	zephyr/log.c
+ * @brief	Zephyr libmetal log handler.
+ */
+
+#include <stdarg.h>
+#include <metal/log.h>
+#include <zephyr.h>
+
+static const char *level_strs[] = {
+	"metal: emergency: ",
+	"metal: alert:     ",
+	"metal: critical:  ",
+	"metal: error:     ",
+	"metal: warning:   ",
+	"metal: notice:    ",
+	"metal: info:      ",
+	"metal: debug:     ",
+};
+
+void metal_zephyr_log_handler(enum metal_log_level level,
+			      const char *format, ...)
+{
+	va_list args;
+
+	if (level <= METAL_LOG_EMERGENCY || level > METAL_LOG_DEBUG)
+		level = METAL_LOG_EMERGENCY;
+	printk("%s", level_strs[level]);
+
+	va_start(args, format);
+	vprintk(format, args);
+	va_end(args);
+}
+