Reviewed-by: Hao Wu <hao.a...@intel.com> Best Regards, Hao Wu
> -----Original Message----- > From: Zeng, Star > Sent: Tuesday, January 15, 2019 6:30 PM > To: edk2-devel@lists.01.org > Cc: Zeng, Star; Wang, Jian J; Wu, Hao A; Kinney, Michael D; Gao, Liming; Ni, > Ray; Laszlo Ersek; Ard Biesheuvel > Subject: [PATCH V3 10/17] MdeModulePkg Variable: Add emulated variable > NV mode support > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1323 > Merge EmuVariable and Real variable driver. > > Add emulated variable NV mode support in real variable driver. > Platform can configure PcdEmuVariableNvModeEnable statically > (build time) or dynamically (boot time) to support emulated > variable NV mode. > > If PcdEmuVariableNvModeEnable is configured to dynamic, its > value should be set before Variable driver starts to work, > otherwise default value will take effect. > > Then EmuVariableRuntimeDxe could be removed, the removal of > EmuVariableRuntimeDxe will be done after platforms are migrated > to use the merged variable driver. > > Cc: Jian J Wang <jian.j.w...@intel.com> > Cc: Hao Wu <hao.a...@intel.com> > Cc: Michael D Kinney <michael.d.kin...@intel.com> > Cc: Liming Gao <liming....@intel.com> > Cc: Ray Ni <ray...@intel.com> > Cc: Laszlo Ersek <ler...@redhat.com> > Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Star Zeng <star.z...@intel.com> > Acked-by: Laszlo Ersek <ler...@redhat.com> > --- > .../Universal/Variable/RuntimeDxe/Variable.c | 318 +++++++++++++++---- > -- > .../Universal/Variable/RuntimeDxe/Variable.h | 1 + > .../Universal/Variable/RuntimeDxe/VariableDxe.c | 27 +- > .../Variable/RuntimeDxe/VariableRuntimeDxe.inf | 4 +- > .../Universal/Variable/RuntimeDxe/VariableSmm.c | 29 +- > .../Universal/Variable/RuntimeDxe/VariableSmm.inf | 4 +- > 6 files changed, 271 insertions(+), 112 deletions(-) > > diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c > b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c > index d3df21819abe..e8e19508cd9a 100644 > --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c > +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c > @@ -34,6 +34,7 @@ VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal; > > /// > /// Define a memory cache that improves the search performance for a > variable. > +/// For EmuNvMode == TRUE, it will be equal to NonVolatileVariableBase. > /// > VARIABLE_STORE_HEADER *mNvVariableCache = NULL; > > @@ -273,7 +274,7 @@ UpdateVariableStore ( > // > // Check if the Data is Volatile. > // > - if (!Volatile) { > + if (!Volatile && !mVariableModuleGlobal->VariableGlobal.EmuNvMode) { > if (Fvb == NULL) { > return EFI_UNSUPPORTED; > } > @@ -296,17 +297,30 @@ UpdateVariableStore ( > // Data Pointer should point to the actual Address where data is to be > // written. > // > - VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) > mVariableModuleGlobal->VariableGlobal.VolatileVariableBase); > - if (SetByIndex) { > - DataPtr += mVariableModuleGlobal- > >VariableGlobal.VolatileVariableBase; > - } > + if (Volatile) { > + VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) > mVariableModuleGlobal->VariableGlobal.VolatileVariableBase); > + if (SetByIndex) { > + DataPtr += mVariableModuleGlobal- > >VariableGlobal.VolatileVariableBase; > + } > > - if ((DataPtr + DataSize) > ((UINTN) VolatileBase + VolatileBase->Size)) { > - return EFI_OUT_OF_RESOURCES; > + if ((DataPtr + DataSize) > ((UINTN) VolatileBase + > VolatileBase->Size)) { > + return EFI_OUT_OF_RESOURCES; > + } > + } else { > + // > + // Emulated non-volatile variable mode. > + // > + if (SetByIndex) { > + DataPtr += (UINTN) mNvVariableCache; > + } > + > + if ((DataPtr + DataSize) > ((UINTN) mNvVariableCache + > mNvVariableCache->Size)) { > + return EFI_OUT_OF_RESOURCES; > + } > } > > // > - // If Volatile Variable just do a simple mem copy. > + // If Volatile/Emulated Non-volatile Variable just do a simple mem copy. > // > CopyMem ((UINT8 *)(UINTN)DataPtr, Buffer, DataSize); > return EFI_SUCCESS; > @@ -987,7 +1001,7 @@ Reclaim ( > CommonUserVariableTotalSize = 0; > HwErrVariableTotalSize = 0; > > - if (IsVolatile) { > + if (IsVolatile || mVariableModuleGlobal->VariableGlobal.EmuNvMode) { > // > // Start Pointers for the variable. > // > @@ -1155,13 +1169,21 @@ Reclaim ( > CurrPtr += NewVariableSize; > } > > - if (IsVolatile) { > + if (IsVolatile || mVariableModuleGlobal->VariableGlobal.EmuNvMode) { > // > - // If volatile variable store, just copy valid buffer. > + // If volatile/emulated non-volatile variable store, just copy valid > buffer. > // > SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, > 0xff); > CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, (UINTN) CurrPtr - > (UINTN) ValidBuffer); > *LastVariableOffset = (UINTN) CurrPtr - (UINTN) ValidBuffer; > + if (!IsVolatile) { > + // > + // Emulated non-volatile variable mode. > + // > + mVariableModuleGlobal->HwErrVariableTotalSize = > HwErrVariableTotalSize; > + mVariableModuleGlobal->CommonVariableTotalSize = > CommonVariableTotalSize; > + mVariableModuleGlobal->CommonUserVariableTotalSize = > CommonUserVariableTotalSize; > + } > Status = EFI_SUCCESS; > } else { > // > @@ -1200,7 +1222,7 @@ Reclaim ( > } > > Done: > - if (IsVolatile) { > + if (IsVolatile || mVariableModuleGlobal->VariableGlobal.EmuNvMode) { > FreePool (ValidBuffer); > } else { > // > @@ -2147,7 +2169,7 @@ UpdateVariable ( > BOOLEAN IsCommonUserVariable; > AUTHENTICATED_VARIABLE_HEADER *AuthVariable; > > - if (mVariableModuleGlobal->FvbInstance == NULL) { > + if (mVariableModuleGlobal->FvbInstance == NULL > && !mVariableModuleGlobal->VariableGlobal.EmuNvMode) { > // > // The FVB protocol is not ready, so the > EFI_VARIABLE_WRITE_ARCH_PROTOCOL is not installed. > // > @@ -2566,85 +2588,106 @@ UpdateVariable ( > } > goto Done; > } > - // > - // Four steps > - // 1. Write variable header > - // 2. Set variable state to header valid > - // 3. Write variable data > - // 4. Set variable state to valid > - // > - // > - // Step 1: > - // > - Status = UpdateVariableStore ( > - &mVariableModuleGlobal->VariableGlobal, > - FALSE, > - TRUE, > - Fvb, > - mVariableModuleGlobal->NonVolatileLastVariableOffset, > - (UINT32) GetVariableHeaderSize (), > - (UINT8 *) NextVariable > - ); > > - if (EFI_ERROR (Status)) { > - goto Done; > - } > + if (!mVariableModuleGlobal->VariableGlobal.EmuNvMode) { > + // > + // Four steps > + // 1. Write variable header > + // 2. Set variable state to header valid > + // 3. Write variable data > + // 4. Set variable state to valid > + // > + // > + // Step 1: > + // > + Status = UpdateVariableStore ( > + &mVariableModuleGlobal->VariableGlobal, > + FALSE, > + TRUE, > + Fvb, > + mVariableModuleGlobal->NonVolatileLastVariableOffset, > + (UINT32) GetVariableHeaderSize (), > + (UINT8 *) NextVariable > + ); > > - // > - // Step 2: > - // > - NextVariable->State = VAR_HEADER_VALID_ONLY; > - Status = UpdateVariableStore ( > - &mVariableModuleGlobal->VariableGlobal, > - FALSE, > - TRUE, > - Fvb, > - mVariableModuleGlobal->NonVolatileLastVariableOffset + > OFFSET_OF (VARIABLE_HEADER, State), > - sizeof (UINT8), > - &NextVariable->State > - ); > + if (EFI_ERROR (Status)) { > + goto Done; > + } > > - if (EFI_ERROR (Status)) { > - goto Done; > - } > - // > - // Step 3: > - // > - Status = UpdateVariableStore ( > - &mVariableModuleGlobal->VariableGlobal, > - FALSE, > - TRUE, > - Fvb, > - mVariableModuleGlobal->NonVolatileLastVariableOffset + > GetVariableHeaderSize (), > - (UINT32) (VarSize - GetVariableHeaderSize ()), > - (UINT8 *) NextVariable + GetVariableHeaderSize () > - ); > + // > + // Step 2: > + // > + NextVariable->State = VAR_HEADER_VALID_ONLY; > + Status = UpdateVariableStore ( > + &mVariableModuleGlobal->VariableGlobal, > + FALSE, > + TRUE, > + Fvb, > + mVariableModuleGlobal->NonVolatileLastVariableOffset + > OFFSET_OF (VARIABLE_HEADER, State), > + sizeof (UINT8), > + &NextVariable->State > + ); > > - if (EFI_ERROR (Status)) { > - goto Done; > - } > - // > - // Step 4: > - // > - NextVariable->State = VAR_ADDED; > - Status = UpdateVariableStore ( > - &mVariableModuleGlobal->VariableGlobal, > - FALSE, > - TRUE, > - Fvb, > - mVariableModuleGlobal->NonVolatileLastVariableOffset + > OFFSET_OF (VARIABLE_HEADER, State), > - sizeof (UINT8), > - &NextVariable->State > - ); > + if (EFI_ERROR (Status)) { > + goto Done; > + } > + // > + // Step 3: > + // > + Status = UpdateVariableStore ( > + &mVariableModuleGlobal->VariableGlobal, > + FALSE, > + TRUE, > + Fvb, > + mVariableModuleGlobal->NonVolatileLastVariableOffset + > GetVariableHeaderSize (), > + (UINT32) (VarSize - GetVariableHeaderSize ()), > + (UINT8 *) NextVariable + GetVariableHeaderSize () > + ); > > - if (EFI_ERROR (Status)) { > - goto Done; > - } > + if (EFI_ERROR (Status)) { > + goto Done; > + } > + // > + // Step 4: > + // > + NextVariable->State = VAR_ADDED; > + Status = UpdateVariableStore ( > + &mVariableModuleGlobal->VariableGlobal, > + FALSE, > + TRUE, > + Fvb, > + mVariableModuleGlobal->NonVolatileLastVariableOffset + > OFFSET_OF (VARIABLE_HEADER, State), > + sizeof (UINT8), > + &NextVariable->State > + ); > > - // > - // Update the memory copy of Flash region. > - // > - CopyMem ((UINT8 *)mNvVariableCache + mVariableModuleGlobal- > >NonVolatileLastVariableOffset, (UINT8 *)NextVariable, VarSize); > + if (EFI_ERROR (Status)) { > + goto Done; > + } > + > + // > + // Update the memory copy of Flash region. > + // > + CopyMem ((UINT8 *)mNvVariableCache + mVariableModuleGlobal- > >NonVolatileLastVariableOffset, (UINT8 *)NextVariable, VarSize); > + } else { > + // > + // Emulated non-volatile variable mode. > + // > + NextVariable->State = VAR_ADDED; > + Status = UpdateVariableStore ( > + &mVariableModuleGlobal->VariableGlobal, > + FALSE, > + TRUE, > + Fvb, > + mVariableModuleGlobal->NonVolatileLastVariableOffset, > + (UINT32) VarSize, > + (UINT8 *) NextVariable > + ); > + > + if (EFI_ERROR (Status)) { > + goto Done; > + } > + } > > mVariableModuleGlobal->NonVolatileLastVariableOffset += > HEADER_ALIGN (VarSize); > > @@ -3876,6 +3919,93 @@ InitRealNonVolatileVariableStore ( > } > > /** > + Init emulated non-volatile variable store. > + > + @param[out] VariableStoreBase Output pointer to emulated non-volatile > variable store base. > + > + @retval EFI_SUCCESS Function successfully executed. > + @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory > resource. > + > +**/ > +EFI_STATUS > +InitEmuNonVolatileVariableStore ( > + EFI_PHYSICAL_ADDRESS *VariableStoreBase > + ) > +{ > + VARIABLE_STORE_HEADER *VariableStore; > + UINT32 VariableStoreLength; > + BOOLEAN FullyInitializeStore; > + UINT32 HwErrStorageSize; > + > + FullyInitializeStore = TRUE; > + > + VariableStoreLength = PcdGet32 (PcdVariableStoreSize); > + ASSERT (sizeof (VARIABLE_STORE_HEADER) <= VariableStoreLength); > + > + // > + // Allocate memory for variable store. > + // > + if (PcdGet64 (PcdEmuVariableNvStoreReserved) == 0) { > + VariableStore = (VARIABLE_STORE_HEADER *) AllocateRuntimePool > (VariableStoreLength); > + if (VariableStore == NULL) { > + return EFI_OUT_OF_RESOURCES; > + } > + } else { > + // > + // A memory location has been reserved for the NV variable store. > Certain > + // platforms may be able to preserve a memory range across system > resets, > + // thereby providing better NV variable emulation. > + // > + VariableStore = > + (VARIABLE_STORE_HEADER *)(VOID*)(UINTN) > + PcdGet64 (PcdEmuVariableNvStoreReserved); > + if ((VariableStore->Size == VariableStoreLength) && > + (CompareGuid (&VariableStore->Signature, > &gEfiAuthenticatedVariableGuid) || > + CompareGuid (&VariableStore->Signature, &gEfiVariableGuid)) && > + (VariableStore->Format == VARIABLE_STORE_FORMATTED) && > + (VariableStore->State == VARIABLE_STORE_HEALTHY)) { > + DEBUG(( > + DEBUG_INFO, > + "Variable Store reserved at %p appears to be valid\n", > + VariableStore > + )); > + FullyInitializeStore = FALSE; > + } > + } > + > + if (FullyInitializeStore) { > + SetMem (VariableStore, VariableStoreLength, 0xff); > + // > + // Use gEfiAuthenticatedVariableGuid for potential auth variable support. > + // > + CopyGuid (&VariableStore->Signature, &gEfiAuthenticatedVariableGuid); > + VariableStore->Size = VariableStoreLength; > + VariableStore->Format = VARIABLE_STORE_FORMATTED; > + VariableStore->State = VARIABLE_STORE_HEALTHY; > + VariableStore->Reserved = 0; > + VariableStore->Reserved1 = 0; > + } > + > + *VariableStoreBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStore; > + > + HwErrStorageSize = PcdGet32 (PcdHwErrStorageSize); > + > + // > + // Note that in EdkII variable driver implementation, Hardware Error > Record type variable > + // is stored with common variable in the same NV region. So the platform > integrator should > + // ensure that the value of PcdHwErrStorageSize is less than the value of > + // (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)). > + // > + ASSERT (HwErrStorageSize < (VariableStoreLength - sizeof > (VARIABLE_STORE_HEADER))); > + > + mVariableModuleGlobal->CommonVariableSpace = ((UINTN) > VariableStoreLength - sizeof (VARIABLE_STORE_HEADER) - > HwErrStorageSize); > + mVariableModuleGlobal->CommonMaxUserVariableSpace = > mVariableModuleGlobal->CommonVariableSpace; > + mVariableModuleGlobal->CommonRuntimeVariableSpace = > mVariableModuleGlobal->CommonVariableSpace; > + > + return EFI_SUCCESS; > +} > + > +/** > Init non-volatile variable store. > > @retval EFI_SUCCESS Function successfully executed. > @@ -3894,9 +4024,19 @@ InitNonVolatileVariableStore ( > UINTN VariableSize; > EFI_STATUS Status; > > - Status = InitRealNonVolatileVariableStore (&VariableStoreBase); > - if (EFI_ERROR (Status)) { > - return Status; > + if (PcdGetBool (PcdEmuVariableNvModeEnable)) { > + Status = InitEmuNonVolatileVariableStore (&VariableStoreBase); > + if (EFI_ERROR (Status)) { > + return Status; > + } > + mVariableModuleGlobal->VariableGlobal.EmuNvMode = TRUE; > + DEBUG ((DEBUG_INFO, "Variable driver will work at emulated non- > volatile variable mode!\n")); > + } else { > + Status = InitRealNonVolatileVariableStore (&VariableStoreBase); > + if (EFI_ERROR (Status)) { > + return Status; > + } > + mVariableModuleGlobal->VariableGlobal.EmuNvMode = FALSE; > } > > mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = > VariableStoreBase; > diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h > b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h > index d128d1a9c680..7a3a5f34deab 100644 > --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h > +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h > @@ -92,6 +92,7 @@ typedef struct { > UINT32 ReentrantState; > BOOLEAN AuthFormat; > BOOLEAN AuthSupport; > + BOOLEAN EmuNvMode; > } VARIABLE_GLOBAL; > > typedef struct { > diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c > b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c > index 521cb4ed2490..a8bb9cf25ebd 100644 > --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c > +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c > @@ -528,16 +528,23 @@ VariableServiceInitialize ( > ); > ASSERT_EFI_ERROR (Status); > > - // > - // Register FtwNotificationEvent () notify function. > - // > - EfiCreateProtocolNotifyEvent ( > - &gEfiFaultTolerantWriteProtocolGuid, > - TPL_CALLBACK, > - FtwNotificationEvent, > - (VOID *)SystemTable, > - &mFtwRegistration > - ); > + if (!PcdGetBool (PcdEmuVariableNvModeEnable)) { > + // > + // Register FtwNotificationEvent () notify function. > + // > + EfiCreateProtocolNotifyEvent ( > + &gEfiFaultTolerantWriteProtocolGuid, > + TPL_CALLBACK, > + FtwNotificationEvent, > + (VOID *)SystemTable, > + &mFtwRegistration > + ); > + } else { > + // > + // Emulated non-volatile variable mode does not depend on FVB and > FTW. > + // > + VariableWriteServiceInitializeDxe (); > + } > > Status = gBS->CreateEventEx ( > EVT_NOTIFY_SIGNAL, > diff --git > a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.in > f > b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.in > f > index 7ef8a97f5d6a..273067753c25 100644 > --- > a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.in > f > +++ > b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.in > f > @@ -9,7 +9,7 @@ > # This external input must be validated carefully to avoid security issues > such as > # buffer overflow or integer overflow. > # > -# Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR> > +# Copyright (c) 2006 - 2019, 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 > @@ -131,6 +131,8 @@ [Pcd] > gEfiMdeModulePkgTokenSpaceGuid.PcdMaxUserNvVariableSpaceSize > ## CONSUMES > > gEfiMdeModulePkgTokenSpaceGuid.PcdBoottimeReservedNvVariableSpac > eSize ## CONSUMES > > gEfiMdeModulePkgTokenSpaceGuid.PcdReclaimVariableSpaceAtEndOfDxe > ## CONSUMES > + gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvModeEnable > ## SOMETIMES_CONSUMES > + gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved > ## SOMETIMES_CONSUMES > > [FeaturePcd] > gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics ## > CONSUMES # statistic the information of variable. > diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c > b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c > index 17b7090f0dcd..3349c8240f0e 100644 > --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c > +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c > @@ -1030,17 +1030,24 @@ VariableServiceInitialize ( > ); > ASSERT_EFI_ERROR (Status); > > - // > - // Register FtwNotificationEvent () notify function. > - // > - Status = gSmst->SmmRegisterProtocolNotify ( > - &gEfiSmmFaultTolerantWriteProtocolGuid, > - SmmFtwNotificationEvent, > - &SmmFtwRegistration > - ); > - ASSERT_EFI_ERROR (Status); > - > - SmmFtwNotificationEvent (NULL, NULL, NULL); > + if (!PcdGetBool (PcdEmuVariableNvModeEnable)) { > + // > + // Register FtwNotificationEvent () notify function. > + // > + Status = gSmst->SmmRegisterProtocolNotify ( > + &gEfiSmmFaultTolerantWriteProtocolGuid, > + SmmFtwNotificationEvent, > + &SmmFtwRegistration > + ); > + ASSERT_EFI_ERROR (Status); > + > + SmmFtwNotificationEvent (NULL, NULL, NULL); > + } else { > + // > + // Emulated non-volatile variable mode does not depend on FVB and > FTW. > + // > + VariableWriteServiceInitializeSmm (); > + } > > return EFI_SUCCESS; > } > diff --git > a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf > b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf > index db7d220e06df..30d446d06e0d 100644 > --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf > +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf > @@ -18,7 +18,7 @@ > # may not be modified without authorization. If platform fails to protect > these resources, > # the authentication service provided in this driver will be broken, and the > behavior is undefined. > # > -# Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR> > +# Copyright (c) 2010 - 2019, 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 > @@ -133,6 +133,8 @@ [Pcd] > gEfiMdeModulePkgTokenSpaceGuid.PcdMaxUserNvVariableSpaceSize > ## CONSUMES > > gEfiMdeModulePkgTokenSpaceGuid.PcdBoottimeReservedNvVariableSpac > eSize ## CONSUMES > > gEfiMdeModulePkgTokenSpaceGuid.PcdReclaimVariableSpaceAtEndOfDxe > ## CONSUMES > + gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvModeEnable > ## SOMETIMES_CONSUMES > + gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved > ## SOMETIMES_CONSUMES > > [FeaturePcd] > gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics ## > CONSUMES # statistic the information of variable. > -- > 2.7.0.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
