[PATCH v2 11/17] MdePkg: add MM_STANDALONE implementation of MmServicesTableLib

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

The newly introduced generic MmServicesTableLib can be implemented
for traditional SMM (as we did already), but MM_STANDALONE drivers
require an implementation that is based on standalone MM.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 MdePkg/MdePkg.dsc                                                            |  1 +
 MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf | 39 +++++++++++++++++++
 MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.c   | 41 ++++++++++++++++++++
 MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.uni | 20 ++++++++++
 4 files changed, 101 insertions(+)

diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc
index ec561c53cab0..303e1ab3bd0f 100644
--- a/MdePkg/MdePkg.dsc
+++ b/MdePkg/MdePkg.dsc
@@ -116,6 +116,7 @@ [Components]
   MdePkg/Library/BaseExtractGuidedSectionLib/BaseExtractGuidedSectionLib.inf
 
   MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEntryPoint.inf
+  MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf
 
 [Components.IA32, Components.X64]
   MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
diff --git a/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf b/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf
new file mode 100644
index 000000000000..86f6c5c78035
--- /dev/null
+++ b/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf
@@ -0,0 +1,39 @@
+## @file
+# Standalone MM Services Table Library.
+#
+# Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2018, 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.
+#
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x0001001B
+  BASE_NAME                      = StandaloneMmServicesTableLib
+  MODULE_UNI_FILE                = StandaloneMmServicesTableLib.uni
+  FILE_GUID                      = eaa4684f-fb4e-41f3-9967-307d5b409182
+  MODULE_TYPE                    = MM_STANDALONE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = MmServicesTableLib|MM_STANDALONE
+  PI_SPECIFICATION_VERSION       = 0x00010032
+  CONSTRUCTOR                    = StandaloneMmServicesTableLibConstructor
+
+#
+#  VALID_ARCHITECTURES           = IA32 X64 ARM AARCH64
+#
+
+[Sources]
+  StandaloneMmServicesTableLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  DebugLib
diff --git a/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.c b/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.c
new file mode 100644
index 000000000000..b870f25fcfed
--- /dev/null
+++ b/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.c
@@ -0,0 +1,41 @@
+/** @file
+  MM Services Table Library.
+
+  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2018, 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 <PiMm.h>
+#include <Library/MmServicesTableLib.h>
+#include <Library/DebugLib.h>
+
+EFI_MM_SYSTEM_TABLE   *gMmst             = NULL;
+
+/**
+  The constructor function caches the pointer of the MM Services Table.
+
+  @param  ImageHandle   The firmware allocated handle for the EFI image.
+  @param  SystemTable   A pointer to the EFI System Table.
+
+  @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+StandaloneMmServicesTableLibConstructor (
+  IN EFI_HANDLE           ImageHandle,
+  IN EFI_MM_SYSTEM_TABLE  *MmSystemTable
+  )
+{
+  gMmst = MmSystemTable;
+  ASSERT (gMmst != NULL);
+  return EFI_SUCCESS;
+}
diff --git a/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.uni b/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.uni
new file mode 100644
index 000000000000..2cabf1af1483
--- /dev/null
+++ b/MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.uni
@@ -0,0 +1,20 @@
+// /** @file
+//
+// Standalone MM Services Table Library.
+//
+// Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+// Copyright (c) 2018, 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.
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "Standalone MM Services Table Library"
+
+#string STR_MODULE_DESCRIPTION          #language en-US "Standalone MM Services Table Library."
-- 
2.20.1