/** @file | |
Detection code for QEMU debug port. | |
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR> | |
Copyright (c) 2012, Red Hat, Inc.<BR> | |
Copyright (c) 2020, Citrix Systems, Inc. | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <Library/IoLib.h> | |
#include <Library/PcdLib.h> | |
#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; | |
} |