+/** @file\r
+ Base Debug library instance for QEMU debug port.\r
+ It uses PrintLib to send debug messages to a fixed I/O port.\r
+\r
+ Copyright (c) 2017, Red Hat, Inc.<BR>\r
+ This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php.\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#ifndef __DEBUG_IO_PORT_DETECT_H__\r
+#define __DEBUG_IO_PORT_DETECT_H__\r
+\r
+#include <Base.h>\r
+\r
+//\r
+// The constant value that is read from the debug I/O port\r
+//\r
+#define BOCHS_DEBUG_PORT_MAGIC 0xE9\r
+\r
+\r
+/**\r
+ Helper function to return whether the virtual machine has a debug I/O port.\r
+ PlatformDebugLibIoPortFound can call this function directly or cache the\r
+ result.\r
+\r
+ @retval TRUE if the debug I/O port device was detected.\r
+ @retval FALSE otherwise\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+PlatformDebugLibIoPortDetect (\r
+ VOID\r
+ );\r
+\r
+/**\r
+ Return whether the virtual machine has a debug I/O port. DebugLib.c\r
+ calls this function instead of PlatformDebugLibIoPortDetect, to allow\r
+ caching if possible.\r
+\r
+ @retval TRUE if the debug I/O port device was detected.\r
+ @retval FALSE otherwise\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+PlatformDebugLibIoPortFound (\r
+ VOID\r
+ );\r
+\r
+#endif\r