MdePkg: introduce standalone MM entry point library implementation

Add an implementation of the StandaloneMmDriverEntryPoint library class. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
2019-01-14 12:56:33 +01:00
parent 7df4764e6a
commit 5866d49923
4 changed files with 154 additions and 0 deletions
--- a/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEntryPoint.c
+++ b/MdePkg/Library/StandaloneMmDriverEntryPoint/StandaloneMmDriverEntryPoint.c
@@ -0,0 +1,87 @@
+/** @file
+  Entry point to a Standalone MM driver.
+
+Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2016 - 2018, ARM Ltd. All rights reserved.<BR>
+Copyright (c) 2018, Linaro, Limited. 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/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MmServicesTableLib.h>
+#include <Library/StandaloneMmDriverEntryPoint.h>
+
+/**
+  The entry point of PE/COFF Image for a Standalone MM Driver.
+
+  This function is the entry point for a Standalone MM Driver.
+  This function must call ProcessLibraryConstructorList() and
+  ProcessModuleEntryPointList().
+  If the return status from ProcessModuleEntryPointList()
+  is an error status, then ProcessLibraryDestructorList() must be called.
+  The return value from ProcessModuleEntryPointList() is returned.
+  If _gMmRevision is not zero and SystemTable->Hdr.Revision is
+  less than _gMmRevision, then return EFI_INCOMPATIBLE_VERSION.
+
+  @param  ImageHandle  The image handle of the Standalone MM Driver.
+  @param  SystemTable  A pointer to the EFI System Table.
+
+  @retval  EFI_SUCCESS               The Standalone MM Driver exited normally.
+  @retval  EFI_INCOMPATIBLE_VERSION  _gMmRevision is greater than
+                                     MmSystemTable->Hdr.Revision.
+  @retval  Other                     Return value from
+                                     ProcessModuleEntryPointList().
+
+**/
+EFI_STATUS
+EFIAPI
+_ModuleEntryPoint (
+  IN EFI_HANDLE               ImageHandle,
+  IN IN EFI_MM_SYSTEM_TABLE   *MmSystemTable
+  )
+{
+  EFI_STATUS                 Status;
+
+  if (_gMmRevision != 0) {
+    //
+    // Make sure that the MM spec revision of the platform
+    // is >= MM spec revision of the driver
+    //
+    if (MmSystemTable->Hdr.Revision < _gMmRevision) {
+      return EFI_INCOMPATIBLE_VERSION;
+    }
+  }
+
+  //
+  // Call constructor for all libraries
+  //
+  ProcessLibraryConstructorList (ImageHandle, MmSystemTable);
+
+  //
+  // Call the driver entry point
+  //
+  Status = ProcessModuleEntryPointList (ImageHandle, MmSystemTable);
+
+  //
+  // If all of the drivers returned errors, then invoke all of the library destructors
+  //
+  if (EFI_ERROR (Status)) {
+    ProcessLibraryDestructorList (ImageHandle, MmSystemTable);
+  }
+
+  //
+  // Return the cumulative return status code from all of the driver entry points
+  //
+  return Status;
+}