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/** @file
A hook-in library for:
- MdeModulePkg/Universal/Variable/Pei/VariablePei.inf
- MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
- MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.inf
Plugging this library instance into one of the above modules makes that
variable service backend wait for another platform module to dynamically
initialize or verify EFI_FIRMWARE_VOLUME_HEADER and VARIABLE_STORE_HEADER in
the non-volatile variable store FVB device. The initialization / verification
is signaled by installing gEdkiiNvVarStoreFormattedGuid into the
phase-matching PPI or protocol database, with a NULL interface. (Note that
installing gEdkiiNvVarStoreFormattedGuid into either the DXE or the MM
protocol database will unblock VariableSmm -- refer to EFI_SECTION_MM_DEPEX
in the PI spec.)
Copyright (C) 2018, Red Hat, Inc.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h>
RETURN_STATUS
EFIAPI
NvVarStoreFormattedInitialize (
VOID
)
{
//
// Do nothing, just imbue VariablePei / VariableRuntimeDxe / VariableSmm with
// a PPI or protocol dependency on EDKII_NV_VAR_STORE_FORMATTED_GUID.
//
return RETURN_SUCCESS;
}
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