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