OvmfPkg: AcpiPlatformDxe: extract common entry point

Currently the entry point functions of both driver builds
(AcpiPlatformDxe.inf and QemuFwCfgAcpiPlatformDxe.inf) directly contain
the logic that is different between the two builds.

Because we're going to restructure the entry point logic soon, we'd have
to duplicate the same new code between both entry point functions.

Push down the logic in which they differ to a new function:
- InstallAcpiTables() [AcpiPlatform.c]
- InstallAcpiTables() [QemuFwCfgAcpiPlatform.c]

and extract a common entry point function:
- AcpiPlatformEntryPoint() [EntryPoint.c]

which we can soon modify without code duplication.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16885 6f19259b-4bc3-4df7-8a09-765794883524

7 files changed, 99 insertions, 52 deletions

diff --git a/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c b/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c
index 8bfb1890b1..61166c65c3 100644
--- a/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c
+++ b/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c
@@ -228,7 +228,7 @@ InstallOvmfFvTables (
 }

 

 /**

-  Entrypoint of Acpi Platform driver.

+  Effective entrypoint of Acpi Platform driver.

 

   @param  ImageHandle

   @param  SystemTable

@@ -240,23 +240,11 @@ InstallOvmfFvTables (
 **/

 EFI_STATUS

 EFIAPI

-AcpiPlatformEntryPoint (

-  IN EFI_HANDLE         ImageHandle,

-  IN EFI_SYSTEM_TABLE   *SystemTable

+InstallAcpiTables (

+  IN   EFI_ACPI_TABLE_PROTOCOL       *AcpiTable

   )

 {

   EFI_STATUS                         Status;

-  EFI_ACPI_TABLE_PROTOCOL            *AcpiTable;

-

-  //

-  // Find the AcpiTable protocol

-  //

-  Status = gBS->LocateProtocol (

-                  &gEfiAcpiTableProtocolGuid,

-                  NULL,

-                  (VOID**)&AcpiTable

-                  );

-  ASSERT_EFI_ERROR (Status);

 

   if (XenDetected ()) {

     Status = InstallXenTables (AcpiTable);

diff --git a/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.h b/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.h
index ae11e79e11..55b380b285 100644
--- a/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.h
+++ b/OvmfPkg/AcpiPlatformDxe/AcpiPlatform.h
@@ -67,5 +67,11 @@ InstallQemuFwCfgTables (
   IN   EFI_ACPI_TABLE_PROTOCOL       *AcpiProtocol

   );

 

+EFI_STATUS

+EFIAPI

+InstallAcpiTables (

+  IN   EFI_ACPI_TABLE_PROTOCOL       *AcpiTable

+  );

+

 #endif

 

diff --git a/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf b/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf
index 53292bf150..0ba703dcec 100644
--- a/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf
+++ b/OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf
@@ -31,6 +31,7 @@
   Qemu.c

   QemuFwCfgAcpi.c

   Xen.c

+  EntryPoint.c

 

 [Packages]

   MdePkg/MdePkg.dec

diff --git a/OvmfPkg/AcpiPlatformDxe/EntryPoint.c b/OvmfPkg/AcpiPlatformDxe/EntryPoint.c
new file mode 100644
index 0000000000..d782b610bd
--- /dev/null
+++ b/OvmfPkg/AcpiPlatformDxe/EntryPoint.c
@@ -0,0 +1,47 @@
+/** @file

+  Entry point of OVMF ACPI Platform Driver

+

+  Copyright (C) 2015, Red Hat, Inc.

+  Copyright (c) 2008 - 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 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 "AcpiPlatform.h"

+

+STATIC

+EFI_ACPI_TABLE_PROTOCOL *

+FindAcpiTableProtocol (

+  VOID

+  )

+{

+  EFI_STATUS              Status;

+  EFI_ACPI_TABLE_PROTOCOL *AcpiTable;

+

+  Status = gBS->LocateProtocol (

+                  &gEfiAcpiTableProtocolGuid,

+                  NULL,

+                  (VOID**)&AcpiTable

+                  );

+  ASSERT_EFI_ERROR (Status);

+  return AcpiTable;

+}

+

+EFI_STATUS

+EFIAPI

+AcpiPlatformEntryPoint (

+  IN EFI_HANDLE         ImageHandle,

+  IN EFI_SYSTEM_TABLE   *SystemTable

+  )

+{

+  EFI_STATUS Status;

+

+  Status = InstallAcpiTables (FindAcpiTableProtocol ());

+  return Status;

+}

diff --git a/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c
index 806446ee7f..81620448a0 100644
--- a/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c
+++ b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpi.c
@@ -683,39 +683,3 @@ FreeLoader:
 

   return Status;

 }

-

-

-/**

-  Entrypoint of QEMU fw-cfg Acpi Platform driver.

-

-  @param  ImageHandle

-  @param  SystemTable

-

-  @return EFI_SUCCESS

-  @return EFI_LOAD_ERROR

-  @return EFI_OUT_OF_RESOURCES

-

-**/

-EFI_STATUS

-EFIAPI

-QemuFwCfgAcpiPlatformEntryPoint (

-  IN EFI_HANDLE         ImageHandle,

-  IN EFI_SYSTEM_TABLE   *SystemTable

-  )

-{

-  EFI_STATUS                         Status;

-  EFI_ACPI_TABLE_PROTOCOL            *AcpiTable;

-

-  //

-  // Find the AcpiTable protocol

-  //

-  Status = gBS->LocateProtocol (

-                  &gEfiAcpiTableProtocolGuid,

-                  NULL,

-                  (VOID**)&AcpiTable

-                  );

-  ASSERT_EFI_ERROR (Status);

-

-  Status = InstallQemuFwCfgTables (AcpiTable);

-  return Status;

-}

diff --git a/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatform.c b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatform.c
new file mode 100644
index 0000000000..5cb3bac9db
--- /dev/null
+++ b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatform.c
@@ -0,0 +1,39 @@
+/** @file

+  OVMF ACPI Platform Driver using QEMU's fw-cfg interface

+

+  Copyright (C) 2015, Red Hat, Inc.

+  Copyright (c) 2008 - 2014, 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.

+**/

+

+#include "AcpiPlatform.h"

+

+/**

+  Effective entrypoint of QEMU fw-cfg Acpi Platform driver.

+

+  @param  ImageHandle

+  @param  SystemTable

+

+  @return EFI_SUCCESS

+  @return EFI_LOAD_ERROR

+  @return EFI_OUT_OF_RESOURCES

+

+**/

+EFI_STATUS

+EFIAPI

+InstallAcpiTables (

+  IN   EFI_ACPI_TABLE_PROTOCOL       *AcpiTable

+  )

+{

+  EFI_STATUS                         Status;

+

+  Status = InstallQemuFwCfgTables (AcpiTable);

+  return Status;

+}

diff --git a/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatformDxe.inf b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatformDxe.inf
index 5dab3ba2d7..13c8009ed2 100644
--- a/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatformDxe.inf
+++ b/OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatformDxe.inf
@@ -18,7 +18,7 @@
   FILE_GUID                      = 17985e6f-e778-4d94-aefa-c5dd2b77e186

   MODULE_TYPE                    = DXE_DRIVER

   VERSION_STRING                 = 1.0

-  ENTRY_POINT                    = QemuFwCfgAcpiPlatformEntryPoint

+  ENTRY_POINT                    = AcpiPlatformEntryPoint

 

 #

 # The following information is for reference only and not required by the build tools.

@@ -27,7 +27,9 @@
 #

 

 [Sources]

+  QemuFwCfgAcpiPlatform.c

   QemuFwCfgAcpi.c

+  EntryPoint.c

 

 [Packages]

   MdePkg/MdePkg.dec