1. Rename following library instances according to MDE Library Spec:
1) SerialPortLibNull => BaseSerialPortLibNull 2) DxeMemoryLib => UefiMemoryLib 3) DxeMemoryAllocationLib => UefiMemoryAllocationLib 4) CpuLib => BaseCpuLib 5) HiiLib => UefiHiiLib 6) IfrSupportLib => UefiIfrSupportLib 7) PeiPalCallLib => PeiPalLib 2. Add library instances to MDE package 1) DxePalLib 2) FvbServiceLib 3) GraphicsLib git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6221 6f19259b-4bc3-4df7-8a09-765794883524
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MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.c
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MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.c
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/** @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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Initialize the serial device hardware.
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If no initialization is required, then return RETURN_SUCCESS.
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If the serial device was successfuly initialized, then return RETURN_SUCCESS.
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If the serial device could not be initialized, then return RETURN_DEVICE_ERROR.
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@retval RETURN_SUCCESS The serial device was initialized.
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@retval RETURN_DEVICE_ERROR The serail device could not be initialized.
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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 from buffer to serial device.
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Writes NumberOfBytes data bytes from Buffer to the serial device.
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The number of bytes actually written to the serial device is returned.
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If the return value is less than NumberOfBytes, then the write operation failed.
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If Buffer is NULL, then ASSERT().
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If NumberOfBytes is zero, then return 0.
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@param Buffer Pointer to the data buffer to be written.
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@param NumberOfBytes Number of bytes to written to the serial device.
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@retval 0 NumberOfBytes is 0.
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@retval >0 The number of bytes written to the serial device.
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If this value is less than NumberOfBytes, then the read operation failed.
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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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Reads data from a serial device into a buffer.
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@param Buffer Pointer to the data buffer to store the data read from the serial device.
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@param NumberOfBytes Number of bytes to read from the serial device.
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@retval 0 NumberOfBytes is 0.
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@retval >0 The number of bytes read from the serial device.
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If this value is less than NumberOfBytes, then the read operation failed.
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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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/**
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Polls a serial device to see if there is any data waiting to be read.
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Polls aserial device to see if there is any data waiting to be read.
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If there is data waiting to be read from the serial device, then TRUE is returned.
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If there is no data waiting to be read from the serial device, then FALSE is returned.
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@retval TRUE Data is waiting to be read from the serial device.
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@retval FALSE There is no data waiting to be read from the serial device.
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**/
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BOOLEAN
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EFIAPI
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SerialPortPoll (
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VOID
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)
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{
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return FALSE;
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}
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