40b0b23ed3
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the ArmPlatformPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Andrew Fish <afish@apple.com>
239 lines
8.6 KiB
C
239 lines
8.6 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 - 2016, ARM Ltd. All rights reserved.<BR>
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Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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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/PL011UartClockLib.h>
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#include <Library/PL011UartLib.h>
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#include <Library/SerialPortLib.h>
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/** Initialise the serial device hardware with default settings.
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@retval RETURN_SUCCESS The serial device was initialised.
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@retval RETURN_INVALID_PARAMETER One or more of the default settings
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has an unsupported value.
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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 = FixedPcdGet64 (PcdUartDefaultBaudRate);
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ReceiveFifoDepth = 0; // Use default FIFO depth
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Parity = (EFI_PARITY_TYPE)FixedPcdGet8 (PcdUartDefaultParity);
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DataBits = FixedPcdGet8 (PcdUartDefaultDataBits);
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StopBits = (EFI_STOP_BITS_TYPE)FixedPcdGet8 (PcdUartDefaultStopBits);
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return PL011UartInitializePort (
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(UINTN)PcdGet64 (PcdSerialRegisterBase),
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PL011UartClockGetFreq (),
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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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/**
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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 TRUE At least one byte of data is available to be read
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@retval FALSE No data is available to be read
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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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/**
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Set new attributes to PL011.
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@param BaudRate The baud rate of the serial device. If the
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baud rate is not supported, the speed will
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be reduced down to the nearest supported one
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and the variable's value will be updated
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accordingly.
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@param ReceiveFifoDepth The number of characters the device will
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buffer on input. If the specified value is
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not supported, the variable's value will
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be reduced down to the nearest supported one.
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@param Timeout If applicable, the number of microseconds the
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device will wait before timing out a Read or
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a Write operation.
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@param Parity If applicable, this is the EFI_PARITY_TYPE
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that is computed or checked as each character
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is transmitted or received. If the device
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does not support parity, the value is the
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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
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of stop bits per character. If the device
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does not support stop bits, the value is the
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default stop bit value.
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@retval EFI_SUCCESS All attributes were set correctly.
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@retval EFI_INVALID_PARAMETERS One or more attributes has an unsupported
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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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PL011UartClockGetFreq (),
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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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/**
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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 device.
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@retval RETURN_UNSUPPORTED The 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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return PL011UartSetControl ((UINTN)PcdGet64 (PcdSerialRegisterBase), Control);
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}
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/**
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Retrieve the status of the control bits on a serial device.
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@param[out] Control Status of the control bits on a serial device :
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. EFI_SERIAL_DATA_CLEAR_TO_SEND,
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EFI_SERIAL_DATA_SET_READY,
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EFI_SERIAL_RING_INDICATE,
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EFI_SERIAL_CARRIER_DETECT,
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EFI_SERIAL_REQUEST_TO_SEND,
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EFI_SERIAL_DATA_TERMINAL_READY
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are all related to the DTE (Data Terminal Equipment)
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and DCE (Data Communication Equipment) modes of
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operation of the serial device.
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. EFI_SERIAL_INPUT_BUFFER_EMPTY : equal to one if the
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receive buffer is empty, 0 otherwise.
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. EFI_SERIAL_OUTPUT_BUFFER_EMPTY : equal to one if the
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transmit buffer is empty, 0 otherwise.
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. EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE : equal to one if
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the hardware loopback is enabled (the output feeds
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the receive buffer), 0 otherwise.
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. EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE : equal to one
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if a loopback is accomplished by software, else 0.
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. EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE : equal to
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one if the hardware flow control based on CTS (Clear
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To Send) and RTS (Ready To Send) control signals is
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enabled, 0 otherwise.
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@retval RETURN_SUCCESS The control bits were read from the device.
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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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