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MdeModulePkg/SerialDxe: Set FIFO depth with PCD 

Set UART receive FIFO depth with PCD instead of fixed number "1".
The default value of PCD is also 1, so it makes no difference for
platforms which do not explicitly set this PCD.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Heyi Guo 2016-03-17 22:36:53 +08:00 committed by Ruiyu Ni
parent 077af17ad0
commit f423d76021
2 changed files with 7 additions and 5 deletions
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9
MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
View File

@ -41,10 +41,11 @@
gEfiDevicePathProtocolGuid ## PRODUCES
[Pcd]
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultDataBits ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultParity ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultStopBits ## CONSUMES
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultReceiveFifoDepth ## CONSUMES
[Depex]
TRUE

3
MdeModulePkg/Universal/SerialDxe/SerialIo.c
View File

@ -236,7 +236,7 @@ SerialReset (
//
// Set the Serial I/O mode
//
This->Mode->ReceiveFifoDepth = 1;
This->Mode->ReceiveFifoDepth = PcdGet16 (PcdUartDefaultReceiveFifoDepth);
This->Mode->Timeout = 1000 * 1000;
This->Mode->BaudRate = PcdGet64 (PcdUartDefaultBaudRate);
This->Mode->DataBits = (UINT32) PcdGet8 (PcdUartDefaultDataBits);
@ -508,6 +508,7 @@ SerialDxeInitialize (
mSerialIoMode.DataBits = (UINT32) PcdGet8 (PcdUartDefaultDataBits);
mSerialIoMode.Parity = (UINT32) PcdGet8 (PcdUartDefaultParity);
mSerialIoMode.StopBits = (UINT32) PcdGet8 (PcdUartDefaultStopBits);
mSerialIoMode.ReceiveFifoDepth = PcdGet16 (PcdUartDefaultReceiveFifoDepth);
mSerialDevicePath.Uart.BaudRate = PcdGet64 (PcdUartDefaultBaudRate);
mSerialDevicePath.Uart.DataBits = PcdGet8 (PcdUartDefaultDataBits);
mSerialDevicePath.Uart.Parity = PcdGet8 (PcdUartDefaultParity);