diff options
Diffstat (limited to 'MdeModulePkg/Universal/VariablePei/VariableWorker.c')
-rw-r--r-- | MdeModulePkg/Universal/VariablePei/VariableWorker.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/VariablePei/VariableWorker.c b/MdeModulePkg/Universal/VariablePei/VariableWorker.c new file mode 100644 index 0000000000..5cb75d03ef --- /dev/null +++ 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;
+}
+
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