/** @file
Detection code for QEMU debug port.
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.
Copyright (c) 2012, Red Hat, Inc.
Copyright (c) 2020, Citrix Systems, Inc.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include
#include
#include "DebugLibDetect.h"
//
// The constant value that is read from the debug I/O port
//
#define BOCHS_DEBUG_PORT_MAGIC 0xE9
/**
Return the result of detecting the debug I/O port device.
@retval TRUE if the debug I/O port device was detected.
@retval FALSE otherwise
**/
BOOLEAN
EFIAPI
PlatformDebugLibIoPortDetect (
VOID
)
{
return IoRead8 (PcdGet16 (PcdDebugIoPort)) == BOCHS_DEBUG_PORT_MAGIC;
}