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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1082 6f19259b-4bc3-4df7-8a09-765794883524

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This commit is contained in:
xgu3
2006-07-24 08:44:40 +00:00
parent 1be13d3fdd
commit 5dd2d779dd
5 changed files with 74 additions and 42 deletions
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44
EdkModulePkg/Universal/Variable/Pei/Variable.c
View File

@ -245,18 +245,13 @@ Returns:
--*/
{
PEI_FLASH_MAP_PPI *FlashMapPpi;
EFI_FLASH_SUBAREA_ENTRY *VariableStoreEntry;
UINT32 NumEntries;
EFI_HOB_GUID_TYPE *GuidHob;
VARIABLE_STORE_HEADER *VariableStoreHeader;
VARIABLE_HEADER *Variable;
EFI_STATUS Status;
VARIABLE_HEADER *MaxIndex;
VARIABLE_INDEX_TABLE *IndexTable;
UINT32 Count;
UINT8 *VariableBase;
if (VariableName != 0 && VendorGuid == NULL) {
return EFI_INVALID_PARAMETER;
@ -305,39 +300,10 @@ Returns:
if (IndexTable->StartPtr || IndexTable->EndPtr) {
Variable = IndexTable->StartPtr;
} else {
//
// Locate FlashMap PPI
//
Status = (**PeiServices).LocatePpi (
PeiServices,
&gPeiFlashMapPpiGuid,
0,
NULL,
(VOID **) &FlashMapPpi
);
ASSERT_EFI_ERROR (Status);
//
// Get flash area info for variables
//
Status = FlashMapPpi->GetAreaInfo (
PeiServices,
FlashMapPpi,
EFI_FLASH_AREA_EFI_VARIABLES,
NULL,
&NumEntries,
&VariableStoreEntry
);
//
// Currently only one non-volatile variable store is supported
//
if (NumEntries != 1) {
return EFI_UNSUPPORTED;
}
VariableStoreHeader = (VARIABLE_STORE_HEADER *) (UINTN) (VariableStoreEntry->Base);
VariableBase = (UINT8 *) (UINTN) PcdGet32 (PcdFlashNvStorageVariableBase);
VariableStoreHeader = (VARIABLE_STORE_HEADER *) (VariableBase + \
((EFI_FIRMWARE_VOLUME_HEADER *) (VariableBase)) -> HeaderLength);
if (GetVariableStoreStatus (VariableStoreHeader) != EfiValid) {
return EFI_UNSUPPORTED;
}

15
EdkModulePkg/Universal/Variable/Pei/Variable.msa
View File

@ -1,4 +1,4 @@
<?xml version="1.0" encoding="UTF-8"?>
<?xml version="1.0" encoding="UTF-8"?>
<!--Copyright (c) 2006, 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
@ -45,6 +45,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.-->
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>HobLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>PcdLib</Keyword>
</LibraryClass>
</LibraryClassDefinitions>
<SourceFiles>
<Filename>Variable.h</Filename>
@ -74,4 +77,14 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.-->
<ModuleEntryPoint>PeimInitializeVariableServices</ModuleEntryPoint>
</Extern>
</Externs>
<PcdCoded>
<PcdEntry PcdItemType="FIXED_AT_BUILD">
<C_Name>PcdFlashNvStorageVariableBase</C_Name>
<TokenSpaceGuidCName>gEfiGenericPlatformTokenSpaceGuid</TokenSpaceGuidCName>
<HelpText>
The driver gets the Variable store base address from this PCD. This base address point to
an EFI_FIRMWARE_VOLUMN_HEADER struct.
</HelpText>
</PcdEntry>
</PcdCoded>
</ModuleSurfaceArea>