Add variablePei module into MdeModulePkg.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2838 6f19259b-4bc3-4df7-8a09-765794883524
2007-06-28 09:00:08 +00:00
parent de4c8a3080
commit 7ff7768df2
13 changed files with 1191 additions and 2 deletions
--- a/MdeModulePkg/Universal/VariablePei/VariableWorker.c
+++ b/MdeModulePkg/Universal/VariablePei/VariableWorker.c
@ -0,0 +1,81 @@
+/*++
+
+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
+
+--*/
+//
+// The package level header files this module uses
+//
+#include <PiPei.h>
+
+//
+// The protocols, PPI and GUID defintions for this module
+//
+#include <Ppi/ReadOnlyVariable.h>
+//
+// The Library classes this module consumes
+//
+#include <Library/DebugLib.h>
+#include <Library/PeimEntryPoint.h>
+#include <Library/HobLib.h>
+#include <Library/PcdLib.h>
+#include <Library/BaseMemoryLib.h>
+
+
+#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;
+}
+