audk/OvmfPkg/Library/EmuVariableFvbLib/EmuVariableFvbLib.c

51 lines
1.4 KiB
C

/** @file
OVMF platform customization for EMU Variable FVB driver
Copyright (c) 2009, 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
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "PiDxe.h"
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <Library/PlatformFvbLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeLib.h>
/**
This function will be called following a call to the
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL Write function.
@param[in] This EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL instance.
@param[in] Lba The starting logical block index to written to.
**/
VOID
EFIAPI
PlatformFvbDataWritten (
IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,
IN EFI_LBA Lba
)
{
STATIC EFI_EVENT EventToSignal = NULL;
if (!EfiAtRuntime ()) {
if (EventToSignal == NULL) {
EventToSignal = (EFI_EVENT)(UINTN) PcdGet64 (PcdEmuVariableEvent);
}
if (EventToSignal != NULL) {
gBS->SignalEvent (EventToSignal);
}
}
}