mirror of https://github.com/acidanthera/audk.git
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
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/** @file
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Base Debug library instance for QEMU debug port.
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It uses PrintLib to send debug messages to a fixed I/O port.
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Copyright (c) 2017, Red Hat, Inc.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __DEBUG_IO_PORT_DETECT_H__
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#define __DEBUG_IO_PORT_DETECT_H__
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#include <Base.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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Helper function to return whether the virtual machine has a debug I/O port.
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PlatformDebugLibIoPortFound can call this function directly or cache the
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result.
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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 whether the virtual machine has a debug I/O port. DebugLib.c
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calls this function instead of PlatformDebugLibIoPortDetect, to allow
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caching if possible.
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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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PlatformDebugLibIoPortFound (
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VOID
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);
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#endif
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