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EmbeddedPkg: Remove SerialDxe and SerialPortExtLib libraries 

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18974 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Star Zeng 2015-11-26 08:52:58 +00:00 committed by lzeng14
parent ad7f6bc2e1
commit 1bccab9107
8 changed files with 1 additions and 760 deletions
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6
EmbeddedPkg/EmbeddedPkg.dsc
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@ -2,7 +2,7 @@
# Embedded Package # Embedded Package
# #
# #
# Copyright (c) 2007, Intel Corporation. All rights reserved.<BR> # Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2012-2015, ARM Ltd. All rights reserved.<BR> # Copyright (c) 2012-2015, ARM Ltd. All rights reserved.<BR>
# #
# This program and the accompanying materials # This program and the accompanying materials
@ -68,7 +68,6 @@
PrePiLib|EmbeddedPkg/Library/PrePiLib/PrePiLib.inf PrePiLib|EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
SerialPortLib|MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf SerialPortLib|MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf
SerialPortExtLib|EmbeddedPkg/Library/TemplateSerialPortExtLib/TemplateSerialPortExtLib.inf
RealTimeClockLib|EmbeddedPkg/Library/TemplateRealTimeClockLib/TemplateRealTimeClockLib.inf RealTimeClockLib|EmbeddedPkg/Library/TemplateRealTimeClockLib/TemplateRealTimeClockLib.inf
EfiResetSystemLib|EmbeddedPkg/Library/TemplateResetSystemLib/TemplateResetSystemLib.inf EfiResetSystemLib|EmbeddedPkg/Library/TemplateResetSystemLib/TemplateResetSystemLib.inf
GdbSerialLib|EmbeddedPkg/Library/GdbSerialLib/GdbSerialLib.inf GdbSerialLib|EmbeddedPkg/Library/GdbSerialLib/GdbSerialLib.inf
@ -249,8 +248,6 @@
EmbeddedPkg/Library/GdbSerialLib/GdbSerialLib.inf EmbeddedPkg/Library/GdbSerialLib/GdbSerialLib.inf
EmbeddedPkg/Library/PrePiExtractGuidedSectionLib/PrePiExtractGuidedSectionLib.inf EmbeddedPkg/Library/PrePiExtractGuidedSectionLib/PrePiExtractGuidedSectionLib.inf
EmbeddedPkg/Library/PrePiLib/PrePiLib.inf EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.inf
EmbeddedPkg/Library/SerialPortExtLibNull/SerialPortExtLibNull.inf
EmbeddedPkg/Library/TemplateResetSystemLib/TemplateResetSystemLib.inf EmbeddedPkg/Library/TemplateResetSystemLib/TemplateResetSystemLib.inf
EmbeddedPkg/Library/TemplateRealTimeClockLib/TemplateRealTimeClockLib.inf EmbeddedPkg/Library/TemplateRealTimeClockLib/TemplateRealTimeClockLib.inf
EmbeddedPkg/Library/LzmaHobCustomDecompressLib/LzmaHobCustomDecompressLib.inf EmbeddedPkg/Library/LzmaHobCustomDecompressLib/LzmaHobCustomDecompressLib.inf
@ -261,7 +258,6 @@
EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.inf EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.inf
EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf
EmbeddedPkg/ResetRuntimeDxe/ResetRuntimeDxe.inf EmbeddedPkg/ResetRuntimeDxe/ResetRuntimeDxe.inf
EmbeddedPkg/SerialDxe/SerialDxe.inf
EmbeddedPkg/SimpleTextInOutSerial/SimpleTextInOutSerial.inf EmbeddedPkg/SimpleTextInOutSerial/SimpleTextInOutSerial.inf
EmbeddedPkg/MetronomeDxe/MetronomeDxe.inf { EmbeddedPkg/MetronomeDxe/MetronomeDxe.inf {
<LibraryClasses> <LibraryClasses>

116
EmbeddedPkg/Include/Library/SerialPortExtLib.h
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@ -1,116 +0,0 @@
/** @file
Serial I/O port control interface extension.
This library provides an extension to the library providing common
serial I/O port functions that is defined in MdePkg. The aim is to
provide more control over the functionalities of a serial port. The
extension covers all the needs of the UEFI Serial I/O Protocol.
Though, its use is not restricted to the UEFI Serial I/O Protocol.
It could for example be used in the PEI phase of the boot sequence
as well.
Copyright (c) 2012 - 2014, ARM Ltd. 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.
**/
#ifndef __SERIAL_PORT_EXT_LIB_H__
#define __SERIAL_PORT_EXT_LIB_H__
#include <Uefi/UefiBaseType.h>
#include <Protocol/SerialIo.h>
/**
Assert or deassert the control signals on a serial port.
The following control signals are set according their bit settings :
. Request to Send
. Data Terminal Ready
@param[in] Control The following bits are taken into account :
. EFI_SERIAL_REQUEST_TO_SEND : assert/deassert the
"Request To Send" control signal if this bit is
equal to one/zero.
. EFI_SERIAL_DATA_TERMINAL_READY : assert/deassert
the "Data Terminal Ready" control signal if this
bit is equal to one/zero.
. EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE : enable/disable
the hardware loopback if this bit is equal to
one/zero.
. EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE : not supported.
. EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE : enable/
disable the hardware flow control based on CTS (Clear
To Send) and RTS (Ready To Send) control signals.
@retval RETURN_SUCCESS The new control bits were set on the serial device.
@retval RETURN_UNSUPPORTED The serial device does not support this operation.
**/
RETURN_STATUS
EFIAPI
SerialPortSetControl (
IN UINT32 Control
);
/**
Retrieve the status of the control bits on a serial device.
@param[out] Control Status of the control bits on a serial device :
. EFI_SERIAL_DATA_CLEAR_TO_SEND, EFI_SERIAL_DATA_SET_READY,
EFI_SERIAL_RING_INDICATE, EFI_SERIAL_CARRIER_DETECT,
EFI_SERIAL_REQUEST_TO_SEND, EFI_SERIAL_DATA_TERMINAL_READY
are all related to the DTE (Data Terminal Equipment) and
DCE (Data Communication Equipment) modes of operation of
the serial device.
. EFI_SERIAL_INPUT_BUFFER_EMPTY : equal to one if the receive
buffer is empty, 0 otherwise.
. EFI_SERIAL_OUTPUT_BUFFER_EMPTY : equal to one if the transmit
buffer is empty, 0 otherwise.
. EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE : equal to one if the
hardware loopback is enabled (the ouput feeds the receive
buffer), 0 otherwise.
. EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE : equal to one if a
loopback is accomplished by software, 0 otherwise.
. EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE : equal to one if the
hardware flow control based on CTS (Clear To Send) and RTS
(Ready To Send) control signals is enabled, 0 otherwise.
@retval RETURN_SUCCESS The control bits were read from the serial device.
@retval RETURN_DEVICE_ERROR The serial device is not functioning correctly.
**/
RETURN_STATUS
EFIAPI
SerialPortGetControl (
OUT UINT32 *Control
);
/**
Set the serial device attributes.
@return Always return EFI_UNSUPPORTED.
**/
RETURN_STATUS
EFIAPI
SerialPortSetAttributes (
IN OUT UINT64 *BaudRate,
IN OUT UINT32 *ReceiveFifoDepth,
IN OUT UINT32 *Timeout,
IN OUT EFI_PARITY_TYPE *Parity,
IN OUT UINT8 *DataBits,
IN OUT EFI_STOP_BITS_TYPE *StopBits
);
#endif

48
EmbeddedPkg/Library/SerialPortExtLibNull/SerialPortExtLibNull.c
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@ -1,48 +0,0 @@
/** @file
Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
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 <Library/SerialPortExtLib.h>
RETURN_STATUS
EFIAPI
SerialPortSetAttributes (
IN OUT UINT64 *BaudRate,
IN OUT UINT32 *ReceiveFifoDepth,
IN OUT UINT32 *Timeout,
IN OUT EFI_PARITY_TYPE *Parity,
IN OUT UINT8 *DataBits,
IN OUT EFI_STOP_BITS_TYPE *StopBits
)
{
return RETURN_SUCCESS;
}
RETURN_STATUS
EFIAPI
SerialPortSetControl (
IN UINT32 Control
)
{
return RETURN_SUCCESS;
}
RETURN_STATUS
EFIAPI
SerialPortGetControl (
OUT UINT32 *Control
)
{
*Control = 0;
return RETURN_SUCCESS;
}

30
EmbeddedPkg/Library/SerialPortExtLibNull/SerialPortExtLibNull.inf
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@ -1,30 +0,0 @@
#/** @file
#
# Component description file for PL011SerialPortLib module
#
# Copyright (c) 2011-2014, ARM Ltd. All rights reserved.<BR>
#
# 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.
#
#**/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = SerialPortExtLibNull
FILE_GUID = BD396D28-085E-477A-A5DE-A8D91DD1F752
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = SerialPortExtLib
[Sources.common]
SerialPortExtLibNull.c
[Packages]
MdePkg/MdePkg.dec
EmbeddedPkg/EmbeddedPkg.dec

79
EmbeddedPkg/Library/TemplateSerialPortExtLib/TemplateSerialPortExtLib.c
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@ -1,79 +0,0 @@
/** @file
Extended Serial I/O Port library functions
Copyright (c) 2012, ARM Ltd. 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>
#include <Library/SerialPortExtLib.h>
/**
Set the serial device control bits.
@return Always return RETURN_UNSUPPORTED.
**/
RETURN_STATUS
EFIAPI
SerialPortSetControl (
IN UINT32 Control
)
{
return RETURN_UNSUPPORTED;
}
/**
Get the serial device control bits.
@param Control Control signals read from the serial device.
@retval EFI_SUCCESS The control bits were read from the serial device.
@retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
**/
RETURN_STATUS
EFIAPI
SerialPortGetControl (
OUT UINT32 *Control
)
{
if (SerialPortPoll ()) {
// If a character is pending don't set EFI_SERIAL_INPUT_BUFFER_EMPTY
*Control = EFI_SERIAL_OUTPUT_BUFFER_EMPTY;
} else {
*Control = EFI_SERIAL_INPUT_BUFFER_EMPTY | EFI_SERIAL_OUTPUT_BUFFER_EMPTY;
}
return RETURN_SUCCESS;
}
/**
Set the serial device attributes.
@return Always return RETURN_UNSUPPORTED.
**/
RETURN_STATUS
EFIAPI
SerialPortSetAttributes (
IN OUT UINT64 *BaudRate,
IN OUT UINT32 *ReceiveFifoDepth,
IN OUT UINT32 *Timeout,
IN OUT EFI_PARITY_TYPE *Parity,
IN OUT UINT8 *DataBits,
IN OUT EFI_STOP_BITS_TYPE *StopBits
)
{
return RETURN_UNSUPPORTED;
}

36
EmbeddedPkg/Library/TemplateSerialPortExtLib/TemplateSerialPortExtLib.inf
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@ -1,36 +0,0 @@
#/** @file
# Template for Extended Serial Port Library for UEFI drivers
#
# Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2012, ARM Ltd. All rights reserved.<BR>
#
# 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.
#
#
#**/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = TemplateSerialPortExtLib
FILE_GUID = 231fe752-40ac-40b0-8d23-4e341309b964
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = SerialPortExtLib
#
# VALID_ARCHITECTURES = ARM IA32 X64 IPF EBC
#
[Sources.common]
TemplateSerialPortExtLib.c
[Packages]
MdePkg/MdePkg.dec
EmbeddedPkg/EmbeddedPkg.dec

55
EmbeddedPkg/SerialDxe/SerialDxe.inf
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@ -1,55 +0,0 @@
#/** @file
#
# Convert SerialLib into SerialIo protocol
#
# Copyright (c) 2008, Intel Corporation. All rights reserved.<BR>
# 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.
#
#**/
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = SerialDxe
FILE_GUID = D3987D4B-971A-435F-8CAF-4967EB627241
MODULE_TYPE = DXE_DRIVER
VERSION_STRING = 1.0
ENTRY_POINT = SerialDxeInitialize
[Sources.common]
SerialIo.c
[Packages]
MdePkg/MdePkg.dec
EmbeddedPkg/EmbeddedPkg.dec
[LibraryClasses]
BaseLib
ReportStatusCodeLib
MemoryAllocationLib
UefiLib
UefiBootServicesTableLib
BaseMemoryLib
DebugLib
UefiDriverEntryPoint
SerialPortLib
SerialPortExtLib
[Protocols]
gEfiSerialIoProtocolGuid
gEfiDevicePathProtocolGuid
[FixedPcd]
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits
[Depex]
TRUE

391
EmbeddedPkg/SerialDxe/SerialIo.c
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@ -1,391 +0,0 @@
/** @file
Serial IO Abstraction for GDB stub. This allows an EFI consoles that shows up on the system
running GDB. One console for error information and another console for user input/output.
Basic packet format is $packet-data#checksum. So every command has 4 bytes of overhead: $,
#, 0, 0. The 0 and 0 are the ascii characters for the checksum.
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Copyright (c) 2013-2014, ARM Ltd. All rights reserved.<BR>
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 <PiDxe.h>
#include <Library/UefiLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/SerialPortLib.h>
#include <Library/SerialPortExtLib.h>
#include <Library/PcdLib.h>
#include <Protocol/SerialIo.h>
typedef struct {
VENDOR_DEVICE_PATH Guid;
UART_DEVICE_PATH Uart;
EFI_DEVICE_PATH_PROTOCOL End;
} SIMPLE_TEXT_OUT_DEVICE_PATH;
SIMPLE_TEXT_OUT_DEVICE_PATH mDevicePath = {
{
{ HARDWARE_DEVICE_PATH, HW_VENDOR_DP, { sizeof (VENDOR_DEVICE_PATH), 0} },
EFI_CALLER_ID_GUID // Use the drivers GUID
},
{
{ MESSAGING_DEVICE_PATH, MSG_UART_DP, { sizeof (UART_DEVICE_PATH), 0} },
0, // Reserved
FixedPcdGet64 (PcdUartDefaultBaudRate), // BaudRate
FixedPcdGet8 (PcdUartDefaultDataBits), // DataBits
FixedPcdGet8 (PcdUartDefaultParity), // Parity (N)
FixedPcdGet8 (PcdUartDefaultStopBits) // StopBits
},
{ END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE, { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 } }
};
EFI_HANDLE gHandle = NULL;
/**
Reset the serial device.
@param This Protocol instance pointer.
@retval EFI_SUCCESS The device was reset.
@retval EFI_DEVICE_ERROR The serial device could not be reset.
**/
EFI_STATUS
EFIAPI
SerialReset (
IN EFI_SERIAL_IO_PROTOCOL *This
)
{
EFI_STATUS Status;
EFI_TPL Tpl;
Status = SerialPortInitialize ();
if (EFI_ERROR(Status)) {
return Status;
}
//
// Set the Serial I/O mode and update the device path
//
Tpl = gBS->RaiseTPL (TPL_NOTIFY);
//
// Set the Serial I/O mode
//
This->Mode->ReceiveFifoDepth = 0;
This->Mode->Timeout = 1000000;
This->Mode->BaudRate = PcdGet64 (PcdUartDefaultBaudRate);
This->Mode->DataBits = (UINT32)PcdGet8 (PcdUartDefaultDataBits);
This->Mode->Parity = (UINT32)PcdGet8 (PcdUartDefaultParity);
This->Mode->StopBits = (UINT32)PcdGet8 (PcdUartDefaultStopBits);
//
// Check if the device path has actually changed
//
if (mDevicePath.Uart.BaudRate == This->Mode->BaudRate &&
mDevicePath.Uart.DataBits == (UINT8)This->Mode->DataBits &&
mDevicePath.Uart.Parity == (UINT8)This->Mode->Parity &&
mDevicePath.Uart.StopBits == (UINT8)This->Mode->StopBits
) {
gBS->RestoreTPL (Tpl);
return EFI_SUCCESS;
}
//
// Update the device path
//
mDevicePath.Uart.BaudRate = This->Mode->BaudRate;
mDevicePath.Uart.DataBits = (UINT8)This->Mode->DataBits;
mDevicePath.Uart.Parity = (UINT8)This->Mode->Parity;
mDevicePath.Uart.StopBits = (UINT8)This->Mode->StopBits;
Status = gBS->ReinstallProtocolInterface (
gHandle,
&gEfiDevicePathProtocolGuid,
&mDevicePath,
&mDevicePath
);
gBS->RestoreTPL (Tpl);
return Status;
}
/**
Sets the baud rate, receive FIFO depth, transmit/receive time out, parity,
data buts, and stop bits on a serial device.
@param This Protocol instance pointer.
@param BaudRate The requested baud rate. A BaudRate value of 0 will use the the
device's default interface speed.
@param ReceiveFifoDepth The requested depth of the FIFO on the receive side of the
serial interface. A ReceiveFifoDepth value of 0 will use
the device's default FIFO depth.
@param Timeout The requested time out for a single character in microseconds.
This timeout applies to both the transmit and receive side of the
interface. A Timeout value of 0 will use the device's default time
out value.
@param Parity The type of parity to use on this serial device. A Parity value of
DefaultParity will use the device's default parity value.
@param DataBits The number of data bits to use on the serial device. A DataBits
value of 0 will use the device's default data bit setting.
@param StopBits The number of stop bits to use on this serial device. A StopBits
value of DefaultStopBits will use the device's default number of
stop bits.
@retval EFI_SUCCESS The device was reset.
@retval EFI_DEVICE_ERROR The serial device could not be reset.
**/
EFI_STATUS
EFIAPI
SerialSetAttributes (
IN EFI_SERIAL_IO_PROTOCOL *This,
IN UINT64 BaudRate,
IN UINT32 ReceiveFifoDepth,
IN UINT32 Timeout,
IN EFI_PARITY_TYPE Parity,
IN UINT8 DataBits,
IN EFI_STOP_BITS_TYPE StopBits
)
{
RETURN_STATUS ReturnStatus;
EFI_STATUS Status;
EFI_TPL Tpl;
ReturnStatus = SerialPortSetAttributes (&BaudRate, &ReceiveFifoDepth, &Timeout, &Parity, &DataBits, &StopBits);
if (RETURN_ERROR (ReturnStatus)) {
return EFI_DEVICE_ERROR;
}
//
// Set the Serial I/O mode and update the device path
//
Tpl = gBS->RaiseTPL (TPL_NOTIFY);
//
// Set the Serial I/O mode
//
This->Mode->BaudRate = BaudRate;
This->Mode->ReceiveFifoDepth = ReceiveFifoDepth;
This->Mode->Timeout = Timeout;
This->Mode->Parity = (UINT32)Parity;
This->Mode->DataBits = (UINT32)DataBits;
This->Mode->StopBits = (UINT32)StopBits;
//
// Check if the device path has actually changed
//
if (mDevicePath.Uart.BaudRate == BaudRate &&
mDevicePath.Uart.Parity == (UINT8)Parity &&
mDevicePath.Uart.DataBits == DataBits &&
mDevicePath.Uart.StopBits == (UINT8)StopBits
) {
gBS->RestoreTPL (Tpl);
return EFI_SUCCESS;
}
//
// Update the device path
//
mDevicePath.Uart.BaudRate = BaudRate;
mDevicePath.Uart.DataBits = DataBits;
mDevicePath.Uart.Parity = (UINT8) Parity;
mDevicePath.Uart.StopBits = (UINT8) StopBits;
Status = gBS->ReinstallProtocolInterface (
gHandle,
&gEfiDevicePathProtocolGuid,
&mDevicePath,
&mDevicePath
);
gBS->RestoreTPL (Tpl);
return Status;
}
/**
Set the control bits on a serial device
@param This Protocol instance pointer.
@param Control Set the bits of Control that are settable.
@retval EFI_SUCCESS The new control bits were set on the serial device.
@retval EFI_UNSUPPORTED The serial device does not support this operation.
@retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
**/
EFI_STATUS
EFIAPI
SerialSetControl (
IN EFI_SERIAL_IO_PROTOCOL *This,
IN UINT32 Control
)
{
return SerialPortSetControl(Control);
}
/**
Retrieves the status of the control bits on a serial device
@param This Protocol instance pointer.
@param Control A pointer to return the current Control signals from the serial device.
@retval EFI_SUCCESS The control bits were read from the serial device.
@retval EFI_DEVICE_ERROR The serial device is not functioning correctly.
**/
EFI_STATUS
EFIAPI
SerialGetControl (
IN EFI_SERIAL_IO_PROTOCOL *This,
OUT UINT32 *Control
)
{
return SerialPortGetControl(Control);
}
/**
Writes data to a serial device.
@param This Protocol instance pointer.
@param BufferSize On input, the size of the Buffer. On output, the amount of
data actually written.
@param Buffer The buffer of data to write
@retval EFI_SUCCESS The data was written.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_TIMEOUT The data write was stopped due to a timeout.
**/
EFI_STATUS
EFIAPI
SerialWrite (
IN EFI_SERIAL_IO_PROTOCOL *This,
IN OUT UINTN *BufferSize,
IN VOID *Buffer
)
{
UINTN Count;
Count = SerialPortWrite (Buffer, *BufferSize);
if (Count != *BufferSize) {
*BufferSize = Count;
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Reads data from a serial device.
@param This Protocol instance pointer.
@param BufferSize On input, the size of the Buffer. On output, the amount of
data returned in Buffer.
@param Buffer The buffer to return the data into.
@retval EFI_SUCCESS The data was read.
@retval EFI_DEVICE_ERROR The device reported an error.
@retval EFI_TIMEOUT The data write was stopped due to a timeout.
**/
EFI_STATUS
EFIAPI
SerialRead (
IN EFI_SERIAL_IO_PROTOCOL *This,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
)
{
UINTN Count = 0;
if (SerialPortPoll()) {
Count = SerialPortRead (Buffer, *BufferSize);
}
if (Count != *BufferSize) {
*BufferSize = Count;
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// Template used to initialize the GDB Serial IO protocols
//
EFI_SERIAL_IO_MODE gSerialIoMode = {
0, // ControlMask
0, // Timeout
FixedPcdGet64 (PcdUartDefaultBaudRate), // BaudRate
1, // ReceiveFifoDepth
FixedPcdGet8 (PcdUartDefaultDataBits), // DataBits
FixedPcdGet8 (PcdUartDefaultParity), // Parity
FixedPcdGet8 (PcdUartDefaultStopBits) // StopBits
};
EFI_SERIAL_IO_PROTOCOL gSerialIoTemplate = {
SERIAL_IO_INTERFACE_REVISION,
SerialReset,
SerialSetAttributes,
SerialSetControl,
SerialGetControl,
SerialWrite,
SerialRead,
&gSerialIoMode
};
/**
Initialize the state information for the Serial Io Protocol
@param ImageHandle of the loaded driver
@param SystemTable Pointer to the System Table
@retval EFI_SUCCESS Protocol registered
@retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure
@retval EFI_DEVICE_ERROR Hardware problems
**/
EFI_STATUS
EFIAPI
SerialDxeInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
// Make a new handle with Serial IO protocol and its device path on it.
Status = gBS->InstallMultipleProtocolInterfaces (
&gHandle,
&gEfiSerialIoProtocolGuid, &gSerialIoTemplate,
&gEfiDevicePathProtocolGuid, &mDevicePath,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}