2ef2b01e07
ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers. EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell. BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine). git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524
100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/** @file
|
|
Serial I/O Port library functions with no library constructor/destructor
|
|
|
|
Copyright (c) 2008-2009, Apple Inc. All rights reserved.
|
|
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#include <Base.h>
|
|
|
|
|
|
#include <Library/SerialPortLib.h>
|
|
|
|
/*
|
|
|
|
Programmed hardware of Serial port.
|
|
|
|
@return Always return EFI_UNSUPPORTED.
|
|
|
|
**/
|
|
RETURN_STATUS
|
|
EFIAPI
|
|
SerialPortInitialize (
|
|
VOID
|
|
)
|
|
{
|
|
return RETURN_UNSUPPORTED;
|
|
}
|
|
|
|
/**
|
|
Write data to serial device.
|
|
|
|
@param Buffer Point of data buffer which need to be writed.
|
|
@param NumberOfBytes Number of output bytes which are cached in Buffer.
|
|
|
|
@retval 0 Write data failed.
|
|
@retval !0 Actual number of bytes writed to serial device.
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
SerialPortWrite (
|
|
IN UINT8 *Buffer,
|
|
IN UINTN NumberOfBytes
|
|
)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
Read data from serial device and save the datas in buffer.
|
|
|
|
@param Buffer Point of data buffer which need to be writed.
|
|
@param NumberOfBytes Number of output bytes which are cached in Buffer.
|
|
|
|
@retval 0 Read data failed.
|
|
@retval !0 Aactual number of bytes read from serial device.
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
SerialPortRead (
|
|
OUT UINT8 *Buffer,
|
|
IN UINTN NumberOfBytes
|
|
)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
Poll the serial device to see if there is any data waiting.
|
|
|
|
If there is data waiting to be read from the serial port, then return
|
|
TRUE. If there is no data waiting to be read from the serial port, then
|
|
return FALSE.
|
|
|
|
@retval TRUE Data is waiting to be read.
|
|
@retval FALSE There is no data waiting to be read.
|
|
|
|
**/
|
|
BOOLEAN
|
|
EFIAPI
|
|
SerialPortPoll (
|
|
VOID
|
|
)
|
|
{
|
|
return 0;
|
|
}
|
|
|