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
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/** @file
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Serial I/O Port library functions with no library constructor/destructor
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Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
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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/SerialPortLib.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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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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UINT64 BaudRate;
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UINT32 ReceiveFifoDepth;
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EFI_PARITY_TYPE Parity;
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UINT8 DataBits;
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EFI_STOP_BITS_TYPE StopBits;
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BaudRate = (UINTN)PcdGet64 (PcdUartDefaultBaudRate);
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ReceiveFifoDepth = 0; // Use the default value for Fifo depth
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Parity = (EFI_PARITY_TYPE)PcdGet8 (PcdUartDefaultParity);
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DataBits = PcdGet8 (PcdUartDefaultDataBits);
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StopBits = (EFI_STOP_BITS_TYPE) PcdGet8 (PcdUartDefaultStopBits);
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return PL011UartInitializePort (
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(UINTN)PcdGet64 (PcdSerialRegisterBase),
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&BaudRate, &ReceiveFifoDepth, &Parity, &DataBits, &StopBits);
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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 written.
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@param NumberOfBytes Number of output bytes which are cached in Buffer.
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@retval 0 Write data failed.
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@retval !0 Actual number of bytes written to serial device.
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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 PL011UartWrite ((UINTN)PcdGet64 (PcdSerialRegisterBase), Buffer, NumberOfBytes);
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}
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/**
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Read data from serial device and save the data in buffer.
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@param Buffer Point of data buffer which need to be written.
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@param NumberOfBytes Number of output bytes which are cached in Buffer.
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@retval 0 Read data failed.
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@retval !0 Actual number of bytes read from serial device.
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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 PL011UartRead ((UINTN)PcdGet64 (PcdSerialRegisterBase), Buffer, NumberOfBytes);
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}
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/**
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Check to see if any data is available to be read from the debug device.
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@retval EFI_SUCCESS At least one byte of data is available to be read
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@retval EFI_NOT_READY No data is available to be read
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@retval EFI_DEVICE_ERROR The serial device is not functioning properly
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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 PL011UartPoll ((UINTN)PcdGet64 (PcdSerialRegisterBase));
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}
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