Beyond just changing the directly related lines in the FDF and DSC files,
we have to adapt the EarlyFdtPL011SerialPortLib and FdtPL011SerialPortLib
instances as well, in the same patch. This is because the EmbeddedPkg
driver expects the SerialPortSetAttributes(),
SerialPortSetControl() and SerialPortGetControl() functions from
SerialPortExtLib, while the MdeModulePkg driver expects them from
SerialPortLib itself.

We cannot implement these functions in ArmVirtPkg's SerialPortLib
instances *before* flipping the driver, because it would cause double
function definitions in the EmbeddedPkg driver. We also can't implement
the functions *after* flipping the driver, because it would cause
unresolved function references in the MdeModulePkg driver. Therefore
we have to implement the functions simultaneously with the driver
replacement.

Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Cc: Laszlo Ersek <ler...@redhat.com>
Cc: Ard Biesheuvel <ard.biesheu...@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.z...@intel.com>
---
 ArmVirtPkg/ArmVirt.dsc.inc                         |  1 -
 ArmVirtPkg/ArmVirtQemu.dsc                         |  2 +-
 ArmVirtPkg/ArmVirtQemu.fdf                         |  2 +-
 ArmVirtPkg/ArmVirtXen.dsc                          |  3 +-
 ArmVirtPkg/ArmVirtXen.fdf                          |  3 +-
 .../EarlyFdtPL011SerialPortLib.c                   | 88 +++++++++++++++++++++-
 .../FdtPL011SerialPortLib/FdtPL011SerialPortLib.c  | 87 +++++++++++++++++++++
 7 files changed, 180 insertions(+), 6 deletions(-)

diff --git a/ArmVirtPkg/ArmVirt.dsc.inc b/ArmVirtPkg/ArmVirt.dsc.inc
index 8626919..b5821a8 100644
--- a/ArmVirtPkg/ArmVirt.dsc.inc
+++ b/ArmVirtPkg/ArmVirt.dsc.inc
@@ -101,7 +101,6 @@ [LibraryClasses.common]
   # ARM PL011 UART Driver
   PL011UartLib|ArmPlatformPkg/Drivers/PL011Uart/PL011Uart.inf
   
SerialPortLib|ArmVirtPkg/Library/FdtPL011SerialPortLib/FdtPL011SerialPortLib.inf
-  
SerialPortExtLib|EmbeddedPkg/Library/SerialPortExtLibNull/SerialPortExtLibNull.inf
 
   #
   # Uncomment (and comment out the next line) For RealView Debugger. The 
Standard IO window
diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc
index 995be89..32c82c7 100644
--- a/ArmVirtPkg/ArmVirtQemu.dsc
+++ b/ArmVirtPkg/ArmVirtQemu.dsc
@@ -284,7 +284,7 @@ [Components.common]
   MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterDxe.inf
   MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsoleDxe.inf
   MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
-  EmbeddedPkg/SerialDxe/SerialDxe.inf
+  MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
 
   MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseDxe.inf
 
diff --git a/ArmVirtPkg/ArmVirtQemu.fdf b/ArmVirtPkg/ArmVirtQemu.fdf
index 89a4015..738e3db 100644
--- a/ArmVirtPkg/ArmVirtQemu.fdf
+++ b/ArmVirtPkg/ArmVirtQemu.fdf
@@ -134,7 +134,7 @@ [FV.FvMain]
   INF MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterDxe.inf
   INF MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsoleDxe.inf
   INF MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
-  INF EmbeddedPkg/SerialDxe/SerialDxe.inf
+  INF MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
 
   INF ArmPkg/Drivers/ArmGic/ArmGicDxe.inf
   INF ArmPkg/Drivers/TimerDxe/TimerDxe.inf
diff --git a/ArmVirtPkg/ArmVirtXen.dsc b/ArmVirtPkg/ArmVirtXen.dsc
index ac37cd2..32e0afc 100644
--- a/ArmVirtPkg/ArmVirtXen.dsc
+++ b/ArmVirtPkg/ArmVirtXen.dsc
@@ -1,6 +1,7 @@
 #
 #  Copyright (c) 2011-2015, ARM Limited. All rights reserved.
 #  Copyright (c) 2014, Linaro Limited. All rights reserved.
+#  Copyright (c) 2015, 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
@@ -198,7 +199,7 @@ [Components.common]
 
   MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatformDxe.inf
   MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
-  EmbeddedPkg/SerialDxe/SerialDxe.inf
+  MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
 
   MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseDxe.inf
 
diff --git a/ArmVirtPkg/ArmVirtXen.fdf b/ArmVirtPkg/ArmVirtXen.fdf
index 97cab4b..7290147 100644
--- a/ArmVirtPkg/ArmVirtXen.fdf
+++ b/ArmVirtPkg/ArmVirtXen.fdf
@@ -1,6 +1,7 @@
 #
 #  Copyright (c) 2011-2015, ARM Limited. All rights reserved.
 #  Copyright (c) 2014, Linaro Limited. All rights reserved.
+#  Copyright (c) 2015, 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
@@ -134,7 +135,7 @@ [FV.FvMain]
   #
   INF MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatformDxe.inf
   INF MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
-  INF EmbeddedPkg/SerialDxe/SerialDxe.inf
+  INF MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
 
   INF ArmPkg/Drivers/ArmGic/ArmGicDxe.inf
   INF ArmPkg/Drivers/TimerDxe/TimerDxe.inf
diff --git 
a/ArmVirtPkg/Library/FdtPL011SerialPortLib/EarlyFdtPL011SerialPortLib.c 
b/ArmVirtPkg/Library/FdtPL011SerialPortLib/EarlyFdtPL011SerialPortLib.c
index ba6d277..c8bfb29 100644
--- a/ArmVirtPkg/Library/FdtPL011SerialPortLib/EarlyFdtPL011SerialPortLib.c
+++ b/ArmVirtPkg/Library/FdtPL011SerialPortLib/EarlyFdtPL011SerialPortLib.c
@@ -4,6 +4,7 @@
   Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
   Copyright (c) 2012 - 2013, ARM Ltd. All rights reserved.<BR>
   Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
+  Copyright (c) 2015, 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
@@ -19,7 +20,6 @@
 
 #include <Library/PcdLib.h>
 #include <Library/SerialPortLib.h>
-#include <Library/SerialPortExtLib.h>
 #include <libfdt.h>
 
 #include <Drivers/PL011Uart.h>
@@ -183,3 +183,89 @@ SerialPortPoll (
 {
   return FALSE;
 }
+
+/**
+  Sets the control bits on a serial device.
+
+  @param[in] Control            Sets the bits of Control that are settable.
+
+  @retval RETURN_SUCCESS        The new control bits were set on the serial 
device.
+  @retval RETURN_UNSUPPORTED    The serial device does not support this 
operation.
+  @retval RETURN_DEVICE_ERROR   The serial device is not functioning correctly.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortSetControl (
+  IN UINT32 Control
+  )
+{
+  return RETURN_UNSUPPORTED;
+}
+
+/**
+  Retrieve the status of the control bits on a serial device.
+
+  @param[out] Control           A pointer to return the current control 
signals from the serial device.
+
+  @retval RETURN_SUCCESS        The control bits were read from the serial 
device.
+  @retval RETURN_UNSUPPORTED    The serial device does not support this 
operation.
+  @retval RETURN_DEVICE_ERROR   The serial device is not functioning correctly.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortGetControl (
+  OUT UINT32 *Control
+  )
+{
+  return RETURN_UNSUPPORTED;
+}
+
+/**
+  Sets the baud rate, receive FIFO depth, transmit/receice time out, parity,
+  data bits, and stop bits on a serial device.
+
+  @param BaudRate           The requested baud rate. A BaudRate value of 0 
will use the
+                            device's default interface speed.
+                            On output, the value actually set.
+  @param ReveiveFifoDepth   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.
+                            On output, the value actually set.
+  @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.
+                            On output, the value actually set.
+  @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.
+                            On output, the value actually set.
+  @param DataBits           The number of data bits to use on the serial 
device. A DataBits
+                            vaule of 0 will use the device's default data bit 
setting.
+                            On output, the value actually set.
+  @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.
+                            On output, the value actually set.
+
+  @retval RETURN_SUCCESS            The new attributes were set on the serial 
device.
+  @retval RETURN_UNSUPPORTED        The serial device does not support this 
operation.
+  @retval RETURN_INVALID_PARAMETER  One or more of the attributes has an 
unsupported value.
+  @retval RETURN_DEVICE_ERROR       The serial device is not functioning 
correctly.
+
+**/
+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;
+}
+
diff --git a/ArmVirtPkg/Library/FdtPL011SerialPortLib/FdtPL011SerialPortLib.c 
b/ArmVirtPkg/Library/FdtPL011SerialPortLib/FdtPL011SerialPortLib.c
index aced666..b73ab8f 100644
--- a/ArmVirtPkg/Library/FdtPL011SerialPortLib/FdtPL011SerialPortLib.c
+++ b/ArmVirtPkg/Library/FdtPL011SerialPortLib/FdtPL011SerialPortLib.c
@@ -5,6 +5,7 @@
   Copyright (c) 2012 - 2013, ARM Ltd. All rights reserved.<BR>
   Copyright (c) 2014, Linaro Ltd. All rights reserved.<BR>
   Copyright (c) 2014, Red Hat, Inc.<BR>
+  Copyright (c) 2015, 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
@@ -148,3 +149,89 @@ SerialPortPoll (
   }
   return FALSE;
 }
+
+/**
+  Sets the baud rate, receive FIFO depth, transmit/receice time out, parity,
+  data bits, and stop bits on a serial device.
+
+  @param BaudRate           The requested baud rate. A BaudRate value of 0 
will use the
+                            device's default interface speed.
+                            On output, the value actually set.
+  @param ReveiveFifoDepth   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.
+                            On output, the value actually set.
+  @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.
+                            On output, the value actually set.
+  @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.
+                            On output, the value actually set.
+  @param DataBits           The number of data bits to use on the serial 
device. A DataBits
+                            vaule of 0 will use the device's default data bit 
setting.
+                            On output, the value actually set.
+  @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.
+                            On output, the value actually set.
+
+  @retval RETURN_SUCCESS            The new attributes were set on the serial 
device.
+  @retval RETURN_UNSUPPORTED        The serial device does not support this 
operation.
+  @retval RETURN_INVALID_PARAMETER  One or more of the attributes has an 
unsupported value.
+  @retval RETURN_DEVICE_ERROR       The serial device is not functioning 
correctly.
+
+**/
+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;
+}
+
+/**
+  Sets the control bits on a serial device.
+
+  @param Control                Sets the bits of Control that are settable.
+
+  @retval RETURN_SUCCESS        The new control bits were set on the serial 
device.
+  @retval RETURN_UNSUPPORTED    The serial device does not support this 
operation.
+  @retval RETURN_DEVICE_ERROR   The serial device is not functioning correctly.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortSetControl (
+  IN UINT32 Control
+  )
+{
+  return RETURN_UNSUPPORTED;
+}
+
+/**
+  Retrieve the status of the control bits on a serial device.
+
+  @param Control                A pointer to return the current control 
signals from the serial device.
+
+  @retval RETURN_SUCCESS        The control bits were read from the serial 
device.
+  @retval RETURN_UNSUPPORTED    The serial device does not support this 
operation.
+  @retval RETURN_DEVICE_ERROR   The serial device is not functioning correctly.
+
+**/
+RETURN_STATUS
+EFIAPI
+SerialPortGetControl (
+  OUT UINT32 *Control
+  )
+{
+  return RETURN_UNSUPPORTED;
+}
+
-- 
1.9.5.msysgit.0

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