Add VariablePei into IntelFrameworkModulePkg

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3624 6f19259b-4bc3-4df7-8a09-765794883524

IntelFrameworkModulePkg/Universal/VariablePei/VariableWorker.c

@@ -0,0 +1,63 @@
+/*++
+
+Copyright (c) 2007, Intel Corporation
+All rights reserved. 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.
+
+Module Name:
+
+  VariableWorker.c
+
+Abstract:
+
+  Framework PEIM to provide the Variable functionality
+
+--*/
+
+#include <Variable.h>
+
+/**
+  Get one variable by the index count.
+
+  @param  IndexTable  The pointer to variable index table.
+  @param  Count       The index count of variable in index table.
+
+  @return The pointer to variable header indexed by count.
+
+**/
+VARIABLE_HEADER *
+GetVariableByIndex (
+  IN VARIABLE_INDEX_TABLE        *IndexTable,
+  IN UINT32                      Count
+  )
+{
+  return (VARIABLE_HEADER *) (UINTN) (IndexTable->Index[Count] + ((UINTN) IndexTable->StartPtr & 0xFFFF0000));
+}
+
+/**
+  Record Variable in VariableIndex HOB.
+
+  Record Variable in VariableIndex HOB and update the length of variable index table.
+
+  @param  IndexTable  The pointer to variable index table.
+  @param  Variable    The pointer to the variable that will be recorded.
+
+  @retval VOID
+
+**/
+VOID
+VariableIndexTableUpdate (
+  IN OUT  VARIABLE_INDEX_TABLE   *IndexTable,
+  IN      VARIABLE_HEADER        *Variable
+  )
+{
+  IndexTable->Index[IndexTable->Length++] = (UINT16) (UINTN) Variable;
+
+  return;
+}
+