2 files changed, 55 insertions, 0 deletions
diff --git a/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.c b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.c
new file mode 100644
index 0000000..474195b
--- /dev/null
+++ b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.c
@@ -0,0 +1,29 @@
+/** @file
+  SMM CPU Rendezvous sevice implement.
+
+  Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/SmmCpuRendezvousLib.h>
+
+/**
+  This routine wait for all AP processors to arrive in SMM.
+
+  @param[in] BlockingMode  Blocking mode or non-blocking mode.
+
+  @retval EFI_SUCCESS  All avaiable APs arrived.
+  @retval EFI_TIMEOUT  Wait for all APs until timeout.
+  @retval OTHER        Fail to register SMM CPU Rendezvous service Protocol.
+**/
+EFI_STATUS
+EFIAPI
+SmmWaitForAllProcessor (
+  IN BOOLEAN  BlockingMode
+  )
+{
+  ASSERT (FALSE);
+  return EFI_SUCCESS;
+}
diff --git a/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.inf b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.inf
new file mode 100644
index 0000000..7c9bac9
--- /dev/null
+++ b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.inf
@@ -0,0 +1,26 @@
+## @file
+# SMM CPU Rendezvous service lib.
+#
+# This is SMM CPU rendezvous service lib that wait for all
+# APs to enter SMM mode.
+#
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = SmmCpuRendezvousLibNull
+  FILE_GUID                      = 1e5790ea-d013-4d7b-9047-b4342a762027
+  MODULE_TYPE                    = DXE_SMM_DRIVER
+  LIBRARY_CLASS                  = SmmCpuRendezvousLib|MM_STANDALONE DXE_SMM_DRIVER
+
+[Sources]
+  SmmCpuRendezvousLibNull.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  DebugLib