ab71619108
Rework of PL011UartSetControl() as a consequence as well as update of function header comment blocks. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ronald Cron <ronald.cron@arm.com> Reviewed-By: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16251 6f19259b-4bc3-4df7-8a09-765794883524
97 lines
3.3 KiB
C
97 lines
3.3 KiB
C
/** @file
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Serial I/O port control interface extension.
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This library provides an extension to the library providing common
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serial I/O port functions that is defined in MdePkg. The aim is to
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provide more control over the functionalities of a serial port. The
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extension covers all the needs of the UEFI Serial I/O Protocol.
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Though, its use is not restricted to the UEFI Serial I/O Protocol.
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It could for example be used in the PEI phase of the boot sequence
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as well.
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Copyright (c) 2012 - 2014, ARM Ltd. All rights reserved.
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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 __SERIAL_PORT_EXT_LIB_H__
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#define __SERIAL_PORT_EXT_LIB_H__
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#include <Uefi/UefiBaseType.h>
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#include <Protocol/SerialIo.h>
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/**
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Assert or deassert the control signals on a serial port.
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The following control signals are set according their bit settings :
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. Request to Send
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. Data Terminal Ready
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@param[in] Control The following bits are taken into account :
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. EFI_SERIAL_REQUEST_TO_SEND : assert/deassert the
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"Request To Send" control signal if this bit is
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equal to one/zero.
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. EFI_SERIAL_DATA_TERMINAL_READY : assert/deassert
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the "Data Terminal Ready" control signal if this
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bit is equal to one/zero.
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. EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE : enable/disable
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the hardware loopback if this bit is equal to
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one/zero.
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. EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE : not supported.
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. EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE : enable/
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disable the hardware flow control based on CTS (Clear
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To Send) and RTS (Ready To Send) control signals.
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@retval RETURN_SUCCESS The new control bits were set on the serial device.
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@retval RETURN_UNSUPPORTED The serial device does not support this operation.
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**/
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RETURN_STATUS
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EFIAPI
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SerialPortSetControl (
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IN UINT32 Control
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);
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/**
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Get the serial device control bits.
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@param Control Control signals read from the serial device.
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@retval EFI_SUCCESS The control bits were read from the serial device.
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@retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
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**/
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RETURN_STATUS
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EFIAPI
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SerialPortGetControl (
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OUT UINT32 *Control
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);
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/**
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Set the serial device attributes.
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@return Always return EFI_UNSUPPORTED.
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**/
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RETURN_STATUS
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EFIAPI
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SerialPortSetAttributes (
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IN OUT UINT64 *BaudRate,
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IN OUT UINT32 *ReceiveFifoDepth,
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IN OUT UINT32 *Timeout,
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IN OUT EFI_PARITY_TYPE *Parity,
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IN OUT UINT8 *DataBits,
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IN OUT EFI_STOP_BITS_TYPE *StopBits
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);
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#endif
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