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/** @file
Base Debug library instance for hypervisor debug port.
It uses PrintLib to send debug messages to a fixed I/O port.
Copyright (c) 2017, Red Hat, Inc.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __DEBUG_IO_PORT_DETECT_H__
#define __DEBUG_IO_PORT_DETECT_H__
#include <Base.h>
//
// The constant value that is read from the debug I/O port
//
#define BOCHS_DEBUG_PORT_MAGIC 0xE9
/**
Helper function to return whether the virtual machine has a debug I/O port.
PlatformDebugLibIoPortFound can call this function directly or cache the
result.
@retval TRUE if the debug I/O port device was detected.
@retval FALSE otherwise
**/
BOOLEAN
EFIAPI
PlatformDebugLibIoPortDetect (
VOID
);
/**
Return whether the virtual machine has a debug I/O port. DebugLib.c
calls this function instead of PlatformDebugLibIoPortDetect, to allow
caching if possible.
@retval TRUE if the debug I/O port device was detected.
@retval FALSE otherwise
**/
BOOLEAN
EFIAPI
PlatformDebugLibIoPortFound (
VOID
);
#endif
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