Add security package to repository.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12261 6f19259b-4bc3-4df7-8a09-765794883524
2011-09-02 07:49:32 +00:00
parent 986d1dfb08
commit 0c18794ea4
102 changed files with 38487 additions and 0 deletions
--- a/SecurityPkg/Tcg/MemoryOverwriteControl/TcgMor.c
+++ b/SecurityPkg/Tcg/MemoryOverwriteControl/TcgMor.c
@@ -0,0 +1,82 @@
+/** @file
+  TCG MOR (Memory Overwrite Request) Control Driver.
+
+  This driver initilize MemoryOverwriteRequestControl variable. It 
+  will clear MOR_CLEAR_MEMORY_BIT bit if it is set.
+
+Copyright (c) 2009 - 2011, 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 "TcgMor.h"
+
+/**
+  Entry Point for TCG MOR Control driver.
+
+  @param[in] ImageHandle  Image handle of this driver.
+  @param[in] SystemTable  A Pointer to the EFI System Table.
+
+  @retval EFI_SUCEESS     
+  @return Others          Some error occurs.
+**/
+EFI_STATUS
+EFIAPI
+MorDriverEntryPoint (
+  IN EFI_HANDLE        ImageHandle,
+  IN EFI_SYSTEM_TABLE  *SystemTable
+  )
+{
+  EFI_STATUS  Status;
+  UINT8       MorControl;
+  UINTN       DataSize;
+
+  ///
+  /// The firmware is required to create the MemoryOverwriteRequestControl UEFI variable.
+  ///
+
+  DataSize = sizeof (MorControl);
+  Status = gRT->GetVariable (
+                  MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME, 
+                  &gEfiMemoryOverwriteControlDataGuid, 
+                  NULL, 
+                  &DataSize, 
+                  &MorControl
+                  );
+  if (EFI_ERROR (Status)) {
+    //
+    // Set default value to 0
+    //
+    MorControl = 0;
+  } else {
+    if (MOR_CLEAR_MEMORY_VALUE (MorControl) == 0x0) {
+      //
+      // MorControl is expected, directly return to avoid unnecessary variable operation
+      //
+      return EFI_SUCCESS;
+    }
+    //
+    // Clear MOR_CLEAR_MEMORY_BIT
+    //
+    DEBUG ((EFI_D_INFO, "TcgMor: Clear MorClearMemory bit\n"));
+    MorControl &= 0xFE;
+  }
+  
+  Status = gRT->SetVariable (
+                  MEMORY_OVERWRITE_REQUEST_VARIABLE_NAME, 
+                  &gEfiMemoryOverwriteControlDataGuid, 
+                  EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+                  DataSize, 
+                  &MorControl
+                  );
+  ASSERT_EFI_ERROR (Status);
+  return Status;
+}
+
+