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MdeModulePkg Variable: Abstract GetHobVariableStore function 

Move getting HOB variable store code logic to a separated
GetHobVariableStore function.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Star Zeng 2018-06-19 16:11:40 +08:00
parent e25a76785e
commit 09808bd39b
2 changed files with 91 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
MdeModulePkg/Universal/Variable/Pei/Variable.c
View File

@ -2,7 +2,7 @@
Implement ReadOnly Variable Services required by PEIM and install
PEI ReadOnly Varaiable2 PPI. These services operates the non volatile storage space.
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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
@ -495,6 +495,31 @@ CompareWithValidVariable (
return EFI_NOT_FOUND;
}
/**
Get HOB variable store.
**/
VOID
GetHobVariableStore (
OUT VARIABLE_STORE_INFO *StoreInfo,
OUT VARIABLE_STORE_HEADER **VariableStoreHeader
)
{
EFI_HOB_GUID_TYPE *GuidHob;
GuidHob = GetFirstGuidHob (&gEfiAuthenticatedVariableGuid);
if (GuidHob != NULL) {
*VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA (GuidHob);
StoreInfo->AuthFlag = TRUE;
} else {
GuidHob = GetFirstGuidHob (&gEfiVariableGuid);
if (GuidHob != NULL) {
*VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA (GuidHob);
StoreInfo->AuthFlag = FALSE;
}
}
}
/**
Return the variable store header and the store info based on the Index.
@ -523,17 +548,8 @@ GetVariableStore (
VariableStoreHeader = NULL;
switch (Type) {
case VariableStoreTypeHob:
GuidHob = GetFirstGuidHob (&gEfiAuthenticatedVariableGuid);
if (GuidHob != NULL) {
VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA (GuidHob);
StoreInfo->AuthFlag = TRUE;
} else {
GuidHob = GetFirstGuidHob (&gEfiVariableGuid);
if (GuidHob != NULL) {
VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA (GuidHob);
StoreInfo->AuthFlag = FALSE;
}
}
GetHobVariableStore (StoreInfo, &VariableStoreHeader);
break;
case VariableStoreTypeNv:

93
MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
View File

@ -4169,6 +4169,64 @@ ConvertNormalVarStorageToAuthVarStorage (
mVariableModuleGlobal->VariableGlobal.AuthFormat = TRUE;
return AuthVarStorage;
}
/**
Get HOB variable store.
@param[out] VariableGuid NV variable store signature.
@retval EFI_SUCCESS Function successfully executed.
@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.
**/
EFI_STATUS
GetHobVariableStore (
IN EFI_GUID *VariableGuid
)
{
VARIABLE_STORE_HEADER *VariableStoreHeader;
UINT64 VariableStoreLength;
EFI_HOB_GUID_TYPE *GuidHob;
BOOLEAN NeedConvertNormalToAuth;
//
// Combinations supported:
// 1. Normal NV variable store +
// Normal HOB variable store
// 2. Auth NV variable store +
// Auth HOB variable store
// 3. Auth NV variable store +
// Normal HOB variable store (code will convert it to Auth Format)
//
NeedConvertNormalToAuth = FALSE;
GuidHob = GetFirstGuidHob (VariableGuid);
if (GuidHob == NULL && VariableGuid == &gEfiAuthenticatedVariableGuid) {
//
// Try getting it from normal variable HOB
//
GuidHob = GetFirstGuidHob (&gEfiVariableGuid);
NeedConvertNormalToAuth = TRUE;
}
if (GuidHob != NULL) {
VariableStoreHeader = GET_GUID_HOB_DATA (GuidHob);
VariableStoreLength = GuidHob->Header.HobLength - sizeof (EFI_HOB_GUID_TYPE);
if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {
if (!NeedConvertNormalToAuth) {
mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) AllocateRuntimeCopyPool ((UINTN) VariableStoreLength, (VOID *) VariableStoreHeader);
} else {
mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) ConvertNormalVarStorageToAuthVarStorage ((VOID *) VariableStoreHeader);
}
if (mVariableModuleGlobal->VariableGlobal.HobVariableBase == 0) {
return EFI_OUT_OF_RESOURCES;
}
} else {
DEBUG ((EFI_D_ERROR, "HOB Variable Store header is corrupted!\n"));
}
}
return EFI_SUCCESS;
}
/**
Initializes variable store area for non-volatile and volatile variable.
@ -4183,13 +4241,9 @@ VariableCommonInitialize (
{
EFI_STATUS Status;
VARIABLE_STORE_HEADER *VolatileVariableStore;
VARIABLE_STORE_HEADER *VariableStoreHeader;
UINT64 VariableStoreLength;
UINTN ScratchSize;
EFI_HOB_GUID_TYPE *GuidHob;
EFI_GUID *VariableGuid;
EFI_FIRMWARE_VOLUME_HEADER *NvFvHeader;
BOOLEAN IsNormalVariableHob;
//
// Allocate runtime memory for variable driver global structure.
@ -4231,32 +4285,11 @@ VariableCommonInitialize (
//
// Get HOB variable store.
//
IsNormalVariableHob = FALSE;
GuidHob = GetFirstGuidHob (VariableGuid);
if (GuidHob == NULL && VariableGuid == &gEfiAuthenticatedVariableGuid) {
//
// Try getting it from normal variable HOB
//
GuidHob = GetFirstGuidHob (&gEfiVariableGuid);
IsNormalVariableHob = TRUE;
}
if (GuidHob != NULL) {
VariableStoreHeader = GET_GUID_HOB_DATA (GuidHob);
VariableStoreLength = GuidHob->Header.HobLength - sizeof (EFI_HOB_GUID_TYPE);
if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {
if (!IsNormalVariableHob) {
mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) AllocateRuntimeCopyPool ((UINTN) VariableStoreLength, (VOID *) VariableStoreHeader);
} else {
mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) ConvertNormalVarStorageToAuthVarStorage ((VOID *) VariableStoreHeader);
}
if (mVariableModuleGlobal->VariableGlobal.HobVariableBase == 0) {
FreePool (NvFvHeader);
FreePool (mVariableModuleGlobal);
return EFI_OUT_OF_RESOURCES;
}
} else {
DEBUG ((EFI_D_ERROR, "HOB Variable Store header is corrupted!\n"));
}
Status = GetHobVariableStore (VariableGuid);
if (EFI_ERROR (Status)) {
FreePool (NvFvHeader);
FreePool (mVariableModuleGlobal);
return Status;
}
mVariableModuleGlobal->MaxVolatileVariableSize = ((PcdGet32 (PcdMaxVolatileVariableSize) != 0) ?