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ArmPlatformPkg/PL011Uart: Allowed to change UART settings in its initialization function

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Because this driver can be used for different purposes (Terminal, Debug port, communication),
its initialization function has been extended to accept additional settings.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13071 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2012-02-29 17:19:52 +00:00
parent b0855f925c
commit 051e63bb55
6 changed files with 650 additions and 368 deletions
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31
ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
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@@ -1,8 +1,8 @@
/** @file
Serial I/O Port library functions with no library constructor/destructor
Copyright (c) 2008 - 2010, Apple Inc. 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
@@ -14,7 +14,7 @@
**/
#include <Include/Uefi.h>
#include <Include/Base.h>
#include <Library/IoLib.h>
#include <Library/PcdLib.h>
@@ -27,7 +27,7 @@
Programmed hardware of Serial port.
@return Always return EFI_UNSUPPORTED.
@return Always return RETURN_UNSUPPORTED.
**/
RETURN_STATUS
@@ -36,21 +36,24 @@ SerialPortInitialize (
VOID
)
{
// No parity, 1 stop, no fifo, 8 data bits
return PL011UartInitialize (
return PL011UartInitializePort (
(UINTN)PcdGet64 (PcdSerialRegisterBase),
(UINTN)PcdGet64 (PcdUartDefaultBaudRate),
PL011_UARTLCR_H_WLEN_8);
0, // Use the default value for Fifo depth
0, // Use the default value for Timeout,
(EFI_PARITY_TYPE)PcdGet8 (PcdUartDefaultParity),
PcdGet8 (PcdUartDefaultDataBits),
(EFI_STOP_BITS_TYPE) PcdGet8 (PcdUartDefaultStopBits));
}
/**
Write data to serial device.
@param Buffer Point of data buffer which need to be writed.
@param Buffer Point of data buffer which need to be written.
@param NumberOfBytes Number of output bytes which are cached in Buffer.
@retval 0 Write data failed.
@retval !0 Actual number of bytes writed to serial device.
@retval !0 Actual number of bytes written to serial device.
**/
UINTN
@@ -64,13 +67,13 @@ SerialPortWrite (
}
/**
Read data from serial device and save the datas in buffer.
Read data from serial device and save the data in buffer.
@param Buffer Point of data buffer which need to be writed.
@param Buffer Point of data buffer which need to be written.
@param NumberOfBytes Number of output bytes which are cached in Buffer.
@retval 0 Read data failed.
@retval !0 Aactual number of bytes read from serial device.
@retval !0 Actual number of bytes read from serial device.
**/
UINTN
@@ -84,10 +87,10 @@ SerialPortRead (
}
/**
Check to see if any data is avaiable to be read from the debug device.
Check to see if any data is available to be read from the debug device.
@retval EFI_SUCCESS At least one byte of data is avaiable to be read
@retval EFI_NOT_READY No data is avaiable to be read
@retval EFI_SUCCESS At least one byte of data is available to be read
@retval EFI_NOT_READY No data is available to be read
@retval EFI_DEVICE_ERROR The serial device is not functioning properly
**/