52f012129a
Factor out debug port detection in PlatformDebugLibIoPort. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Message-Id: <20200423095358.2518197-4-anthony.perard@citrix.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
35 lines
771 B
C
35 lines
771 B
C
/** @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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