EmbeddedPkg: Introduced NULL library for SerialPortExtLib

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16145 6f19259b-4bc3-4df7-8a09-765794883524

EmbeddedPkg/Library/SerialPortExtLibNull/SerialPortExtLibNull.c

@@ -0,0 +1,48 @@
+/** @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;
+}