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Change Variable driver (Pei/RuntimeDxe) to support the default variable data stored in HOB.

Browse Source 
Signed-off-by: niruiyu
Reviewed-by: erictian

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12538 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu
2011-10-14 05:19:39 +00:00
parent 3b4151bcb4
commit 0f7aff7249
6 changed files with 468 additions and 275 deletions
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297
MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
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@ -713,6 +713,67 @@ Reclaim (
return Status;
}
/**
Find the variable in the specified variable store.
@param VariableName Name of the variable to be found
@param VendorGuid Vendor GUID to be found.
@param PtrTrack Variable Track Pointer structure that contains Variable Information.
@retval EFI_SUCCESS Variable found successfully
@retval EFI_NOT_FOUND Variable not found
**/
EFI_STATUS
FindVariableEx (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN OUT VARIABLE_POINTER_TRACK *PtrTrack
)
{
VARIABLE_HEADER *InDeletedVariable;
VOID *Point;
//
// Find the variable by walk through HOB, volatile and non-volatile variable store.
//
InDeletedVariable = NULL;
for ( PtrTrack->CurrPtr = PtrTrack->StartPtr
; (PtrTrack->CurrPtr < PtrTrack->EndPtr) && IsValidVariableHeader (PtrTrack->CurrPtr)
; PtrTrack->CurrPtr = GetNextVariablePtr (PtrTrack->CurrPtr)
) {
if (PtrTrack->CurrPtr->State == VAR_ADDED ||
PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)
) {
if (!AtRuntime () || ((PtrTrack->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {
if (VariableName[0] == 0) {
if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {
InDeletedVariable = PtrTrack->CurrPtr;
} else {
return EFI_SUCCESS;
}
} else {
if (CompareGuid (VendorGuid, &PtrTrack->CurrPtr->VendorGuid)) {
Point = (VOID *) GetVariableNamePtr (PtrTrack->CurrPtr);
ASSERT (NameSizeOfVariable (PtrTrack->CurrPtr) != 0);
if (CompareMem (VariableName, Point, NameSizeOfVariable (PtrTrack->CurrPtr)) == 0) {
if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {
InDeletedVariable = PtrTrack->CurrPtr;
} else {
return EFI_SUCCESS;
}
}
}
}
}
}
}
PtrTrack->CurrPtr = InDeletedVariable;
return (PtrTrack->CurrPtr == NULL) ? EFI_NOT_FOUND : EFI_SUCCESS;
}
/**
Finds variable in storage blocks of volatile and non-volatile storage areas.
@ -744,89 +805,40 @@ FindVariable (
IN VARIABLE_GLOBAL *Global
)
{
VARIABLE_HEADER *Variable[2];
VARIABLE_HEADER *InDeletedVariable;
VARIABLE_STORE_HEADER *VariableStoreHeader[2];
UINTN InDeletedStorageIndex;
UINTN Index;
VOID *Point;
//
// 0: Volatile, 1: Non-Volatile.
// The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName
// make use of this mapping to implement search algorithm.
//
VariableStoreHeader[0] = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);
VariableStoreHeader[1] = mNvVariableCache;
//
// Start Pointers for the variable.
// Actual Data Pointer where data can be written.
//
Variable[0] = GetStartPointer (VariableStoreHeader[0]);
Variable[1] = GetStartPointer (VariableStoreHeader[1]);
EFI_STATUS Status;
VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];
VARIABLE_STORE_TYPE Type;
if (VariableName[0] != 0 && VendorGuid == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Find the variable by walk through volatile and then non-volatile variable store.
// 0: Volatile, 1: HOB, 2: Non-Volatile.
// The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName
// make use of this mapping to implement search algorithm.
//
InDeletedVariable = NULL;
InDeletedStorageIndex = 0;
for (Index = 0; Index < 2; Index++) {
while ((Variable[Index] < GetEndPointer (VariableStoreHeader[Index])) && IsValidVariableHeader (Variable[Index])) {
if (Variable[Index]->State == VAR_ADDED ||
Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)
) {
if (!AtRuntime () || ((Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {
if (VariableName[0] == 0) {
if (Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {
InDeletedVariable = Variable[Index];
InDeletedStorageIndex = Index;
} else {
PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Index]);
PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);
PtrTrack->CurrPtr = Variable[Index];
PtrTrack->Volatile = (BOOLEAN)(Index == 0);
VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) Global->VolatileVariableBase;
VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) Global->HobVariableBase;
VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;
return EFI_SUCCESS;
}
} else {
if (CompareGuid (VendorGuid, &Variable[Index]->VendorGuid)) {
Point = (VOID *) GetVariableNamePtr (Variable[Index]);
ASSERT (NameSizeOfVariable (Variable[Index]) != 0);
if (CompareMem (VariableName, Point, NameSizeOfVariable (Variable[Index])) == 0) {
if (Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {
InDeletedVariable = Variable[Index];
InDeletedStorageIndex = Index;
} else {
PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Index]);
PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);
PtrTrack->CurrPtr = Variable[Index];
PtrTrack->Volatile = (BOOLEAN)(Index == 0);
return EFI_SUCCESS;
}
}
}
}
}
}
Variable[Index] = GetNextVariablePtr (Variable[Index]);
//
// Find the variable by walk through HOB, volatile and non-volatile variable store.
//
for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {
if (VariableStoreHeader[Type] == NULL) {
continue;
}
if (InDeletedVariable != NULL) {
PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[InDeletedStorageIndex]);
PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[InDeletedStorageIndex]);
PtrTrack->CurrPtr = InDeletedVariable;
PtrTrack->Volatile = (BOOLEAN)(InDeletedStorageIndex == 0);
return EFI_SUCCESS;
PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Type]);
PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Type]);
PtrTrack->Volatile = (BOOLEAN) (Type == VariableStoreTypeVolatile);
Status = FindVariableEx (VariableName, VendorGuid, PtrTrack);
if (!EFI_ERROR (Status)) {
return Status;
}
}
PtrTrack->CurrPtr = NULL;
return EFI_NOT_FOUND;
}
@ -1222,7 +1234,7 @@ AutoUpdateLangVariable(
// Update Lang if PlatformLang is already set
// Update PlatformLang if Lang is already set
//
Status = FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *) mVariableModuleGlobal);
Status = FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);
if (!EFI_ERROR (Status)) {
//
// Update Lang
@ -1231,7 +1243,7 @@ AutoUpdateLangVariable(
Data = GetVariableDataPtr (Variable.CurrPtr);
DataSize = Variable.CurrPtr->DataSize;
} else {
Status = FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *) mVariableModuleGlobal);
Status = FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);
if (!EFI_ERROR (Status)) {
//
// Update PlatformLang
@ -1310,7 +1322,7 @@ AutoUpdateLangVariable(
//
// Successfully convert Lang to PlatformLang, and set the BestPlatformLang value into PlatformLang variable simultaneously.
//
FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal);
FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);
Status = UpdateVariable (L"PlatformLang", &gEfiGlobalVariableGuid, BestPlatformLang,
AsciiStrSize (BestPlatformLang), Attributes, &Variable);
@ -1839,9 +1851,12 @@ VariableServiceGetNextVariableName (
IN OUT EFI_GUID *VendorGuid
)
{
VARIABLE_STORE_TYPE Type;
VARIABLE_POINTER_TRACK Variable;
VARIABLE_POINTER_TRACK VariableInHob;
UINTN VarNameSize;
EFI_STATUS Status;
VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];
if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {
return EFI_INVALID_PARAMETER;
@ -1861,45 +1876,85 @@ VariableServiceGetNextVariableName (
Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);
}
//
// 0: Volatile, 1: HOB, 2: Non-Volatile.
// The index and attributes mapping must be kept in this order as FindVariable
// makes use of this mapping to implement search algorithm.
//
VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;
VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;
VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;
while (TRUE) {
//
// If both volatile and non-volatile variable store are parsed,
// return not found.
// Switch from Volatile to HOB, to Non-Volatile.
//
if (Variable.CurrPtr >= Variable.EndPtr || Variable.CurrPtr == NULL) {
Variable.Volatile = (BOOLEAN) (Variable.Volatile ^ ((BOOLEAN) 0x1));
if (!Variable.Volatile) {
Variable.StartPtr = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);
Variable.EndPtr = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase));
} else {
while ((Variable.CurrPtr >= Variable.EndPtr) ||
(Variable.CurrPtr == NULL) ||
!IsValidVariableHeader (Variable.CurrPtr)
) {
//
// Find current storage index
//
for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {
if ((VariableStoreHeader[Type] != NULL) && (Variable.StartPtr == GetStartPointer (VariableStoreHeader[Type]))) {
break;
}
}
ASSERT (Type < VariableStoreTypeMax);
//
// Switch to next storage
//
for (Type++; Type < VariableStoreTypeMax; Type++) {
if (VariableStoreHeader[Type] != NULL) {
break;
}
}
//
// Capture the case that
// 1. current storage is the last one, or
// 2. no further storage
//
if (Type == VariableStoreTypeMax) {
Status = EFI_NOT_FOUND;
goto Done;
}
Variable.CurrPtr = Variable.StartPtr;
if (!IsValidVariableHeader (Variable.CurrPtr)) {
continue;
}
Variable.StartPtr = GetStartPointer (VariableStoreHeader[Type]);
Variable.EndPtr = GetEndPointer (VariableStoreHeader[Type]);
Variable.CurrPtr = Variable.StartPtr;
}
//
// Variable is found
//
if (IsValidVariableHeader (Variable.CurrPtr) && Variable.CurrPtr->State == VAR_ADDED) {
if (Variable.CurrPtr->State == VAR_ADDED) {
if ((AtRuntime () && ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) == 0) {
//
// Don't return NV variable when HOB overrides it
//
if ((VariableStoreHeader[VariableStoreTypeHob] != NULL) && (VariableStoreHeader[VariableStoreTypeNv] != NULL) &&
(Variable.StartPtr == GetStartPointer (VariableStoreHeader[VariableStoreTypeNv]))
) {
VariableInHob.StartPtr = GetStartPointer (VariableStoreHeader[VariableStoreTypeHob]);
VariableInHob.EndPtr = GetEndPointer (VariableStoreHeader[VariableStoreTypeHob]);
Status = FindVariableEx (
GetVariableNamePtr (Variable.CurrPtr),
&Variable.CurrPtr->VendorGuid,
&VariableInHob
);
if (!EFI_ERROR (Status)) {
Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);
continue;
}
}
VarNameSize = NameSizeOfVariable (Variable.CurrPtr);
ASSERT (VarNameSize != 0);
if (VarNameSize <= *VariableNameSize) {
CopyMem (
VariableName,
GetVariableNamePtr (Variable.CurrPtr),
VarNameSize
);
CopyMem (
VendorGuid,
&Variable.CurrPtr->VendorGuid,
sizeof (EFI_GUID)
);
CopyMem (VariableName, GetVariableNamePtr (Variable.CurrPtr), VarNameSize);
CopyMem (VendorGuid, &Variable.CurrPtr->VendorGuid, sizeof (EFI_GUID));
Status = EFI_SUCCESS;
} else {
Status = EFI_BUFFER_TOO_SMALL;
@ -2261,16 +2316,16 @@ VariableWriteServiceInitialize (
UINTN Index;
UINT8 Data;
EFI_PHYSICAL_ADDRESS VariableStoreBase;
UINT64 VariableStoreLength;
VARIABLE_HEADER *Variable;
VOID *VariableData;
VariableStoreBase = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;
VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;
VariableStoreLength = VariableStoreHeader->Size;
//
// Check if the free area is really free.
//
for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreLength; Index++) {
for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreHeader->Size; Index++) {
Data = ((UINT8 *) mNvVariableCache)[Index];
if (Data != 0xff) {
//
@ -2289,6 +2344,33 @@ VariableWriteServiceInitialize (
}
}
//
// Flush the HOB variable to flash and invalidate HOB variable.
//
if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {
//
// Clear the HobVariableBase to avoid SetVariable() updating the variable in HOB
//
VariableStoreHeader = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;
mVariableModuleGlobal->VariableGlobal.HobVariableBase = 0;
for ( Variable = GetStartPointer (VariableStoreHeader)
; (Variable < GetEndPointer (VariableStoreHeader) && IsValidVariableHeader (Variable))
; Variable = GetNextVariablePtr (Variable)
) {
ASSERT (Variable->State == VAR_ADDED);
ASSERT ((Variable->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);
VariableData = GetVariableDataPtr (Variable);
Status = VariableServiceSetVariable (
GetVariableNamePtr (Variable),
&Variable->VendorGuid,
Variable->Attributes,
Variable->DataSize,
VariableData
);
ASSERT_EFI_ERROR (Status);
}
}
return EFI_SUCCESS;
}
@ -2314,6 +2396,7 @@ VariableCommonInitialize (
UINT64 VariableStoreLength;
UINTN ScratchSize;
UINTN VariableSize;
EFI_HOB_GUID_TYPE *GuidHob;
//
// Allocate runtime memory for variable driver global structure.
@ -2333,6 +2416,14 @@ VariableCommonInitialize (
//
ASSERT (PcdGet32 (PcdHwErrStorageSize) <= PcdGet32 (PcdFlashNvStorageVariableSize));
//
// Get HOB variable store.
//
GuidHob = GetFirstGuidHob (&gEfiVariableGuid);
if (GuidHob != NULL) {
mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) GET_GUID_HOB_DATA (GuidHob);
}
//
// Allocate memory for volatile variable store, note that there is a scratch space to store scratch data.
//