mirror of https://github.com/acidanthera/audk.git
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/** @file
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Null Serial Port library instance with empty functions.
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Copyright (c) 2006 - 2008, Intel Corporation
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All rights reserved. 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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#include <Base.h>
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#include <Library/SerialPortLib.h>
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/**
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Programmed hardware of Serial port.
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@return Always return RETURN_UNSUPPORTED.
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**/
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RETURN_STATUS
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EFIAPI
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SerialPortInitialize (
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VOID
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)
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{
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return RETURN_UNSUPPORTED;
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}
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/**
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Write data to serial device.
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@param Buffer Point of data buffer which need to be writed.
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@param NumberOfBytes Number of output bytes which are cached in Buffer.
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@retval 0 No data is to be written.
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**/
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UINTN
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EFIAPI
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SerialPortWrite (
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IN UINT8 *Buffer,
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IN UINTN NumberOfBytes
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)
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{
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return 0;
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}
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/**
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Read data from serial device and save the datas in buffer.
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@param Buffer Point of data buffer, which contains the data
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returned from the serial device.
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@param NumberOfBytes Number of bytes which will be read.
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@retval 0 No data is to be read.
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**/
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UINTN
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EFIAPI
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SerialPortRead (
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OUT UINT8 *Buffer,
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IN UINTN NumberOfBytes
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)
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{
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return 0;
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}
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