15e277d5ac
To be compliant with the UEFI specification it is required to update SERIAL_IO_MODE with the values set. This prototype change allows to get the value used inside SerialPortSetAttributes(). Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <Olivier.martin@arm.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14365 6f19259b-4bc3-4df7-8a09-765794883524
104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/** @file
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Serial I/O Port library functions with no library constructor/destructor
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Copyright (c) 2012-2013, ARM Ltd. All rights reserved.<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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#include <Base.h>
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#include <Library/IoLib.h>
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#include <Library/PcdLib.h>
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#include <Library/SerialPortExtLib.h>
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#include <Drivers/PL011Uart.h>
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/**
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Set new attributes to PL011.
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@param BaudRate The baud rate of the serial device. If the baud rate is not supported,
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the speed will be reduced down to the nearest supported one and the
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variable's value will be updated accordingly.
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@param ReceiveFifoDepth The number of characters the device will buffer on input. If the specified
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value is not supported, the variable's value will be reduced down to the
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nearest supported one.
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@param Timeout If applicable, the number of microseconds the device will wait
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before timing out a Read or a Write operation.
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@param Parity If applicable, this is the EFI_PARITY_TYPE that is computed or checked
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as each character is transmitted or received. If the device does not
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support parity, the value is the default parity value.
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@param DataBits The number of data bits in each character
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@param StopBits If applicable, the EFI_STOP_BITS_TYPE number of stop bits per character.
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If the device does not support stop bits, the value is the default stop
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bit value.
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@retval EFI_SUCCESS All attributes were set correctly on the serial device.
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@retval EFI_INVALID_PARAMETERS One or more of the attributes has an unsupported value.
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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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{
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return PL011UartInitializePort (
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(UINTN)PcdGet64 (PcdSerialRegisterBase),
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BaudRate,
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ReceiveFifoDepth,
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Parity,
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DataBits,
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StopBits);
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}
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/**
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Set the serial device control bits.
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@param Control Control bits which are to be set on the serial device.
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@retval EFI_SUCCESS The new control bits were set on the serial device.
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@retval EFI_UNSUPPORTED The serial device does not support this operation.
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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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SerialPortSetControl (
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IN UINT32 Control
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)
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{
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return PL011UartSetControl ((UINTN)PcdGet64 (PcdSerialRegisterBase), 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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return PL011UartGetControl ((UINTN)PcdGet64 (PcdSerialRegisterBase), Control);
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}
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