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/** @file
SMM Firmware Volume Block Driver for Lakeport Platform.
Firmware volume block driver for FWH or SPI device.
It depends on which Flash Device Library to be linked with this driver.
Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiSmm.h>
#include <Library/SmmServicesTableLib.h>
#include "FvbSmmCommon.h"
#include "FvbService.h"
/**
The function installs EFI_SMM_FIRMWARE_VOLUME_BLOCK protocol
for each FV in the system.
@param[in] FwhInstance The pointer to a FW volume instance structure,
which contains the information about one FV.
@param[in] InstanceNum The instance number which can be used as a ID
to locate this FwhInstance in other functions.
@retval VOID
**/
VOID
InstallFvbProtocol (
IN EFI_FW_VOL_INSTANCE *FwhInstance,
IN UINTN InstanceNum
)
{
EFI_FW_VOL_BLOCK_DEVICE *FvbDevice;
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_STATUS Status;
EFI_HANDLE FvbHandle;
FvbDevice = (EFI_FW_VOL_BLOCK_DEVICE *) AllocateRuntimeCopyPool (
sizeof (EFI_FW_VOL_BLOCK_DEVICE),
&mFvbDeviceTemplate
);
ASSERT (FvbDevice != NULL);
FvbDevice->Instance = InstanceNum;
FwVolHeader = &FwhInstance->VolumeHeader;
//
// Set up the devicepath.
//
if (FwVolHeader->ExtHeaderOffset == 0) {
//
// FV does not contains extension header, then produce MEMMAP_DEVICE_PATH.
//
FvbDevice->DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) AllocateRuntimeCopyPool (sizeof (FV_MEMMAP_DEVICE_PATH), &mFvMemmapDevicePathTemplate);
((FV_MEMMAP_DEVICE_PATH *) FvbDevice->DevicePath)->MemMapDevPath.StartingAddress = FwhInstance->FvBase;
((FV_MEMMAP_DEVICE_PATH *) FvbDevice->DevicePath)->MemMapDevPath.EndingAddress = FwhInstance->FvBase + FwVolHeader->FvLength - 1;
} else {
FvbDevice->DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) AllocateRuntimeCopyPool (sizeof (FV_PIWG_DEVICE_PATH), &mFvPIWGDevicePathTemplate);
CopyGuid (
&((FV_PIWG_DEVICE_PATH *)FvbDevice->DevicePath)->FvDevPath.FvName,
(GUID *)(UINTN)(FwhInstance->FvBase + FwVolHeader->ExtHeaderOffset)
);
}
//
// Install the SMM Firmware Volume Block Protocol and Device Path Protocol.
//
FvbHandle = NULL;
Status = gSmst->SmmInstallProtocolInterface (
&FvbHandle,
&gEfiSmmFirmwareVolumeBlockProtocolGuid,
EFI_NATIVE_INTERFACE,
&FvbDevice->FwVolBlockInstance
);
ASSERT_EFI_ERROR (Status);
Status = gSmst->SmmInstallProtocolInterface (
&FvbHandle,
&gEfiDevicePathProtocolGuid,
EFI_NATIVE_INTERFACE,
FvbDevice->DevicePath
);
ASSERT_EFI_ERROR (Status);
//
// Notify the Fvb wrapper driver SMM fvb is ready.
//
FvbHandle = NULL;
Status = gBS->InstallProtocolInterface (
&FvbHandle,
&gEfiSmmFirmwareVolumeBlockProtocolGuid,
EFI_NATIVE_INTERFACE,
&FvbDevice->FwVolBlockInstance
);
}
/**
The driver entry point for SMM Firmware Volume Block Driver.
The function does the necessary initialization work
Firmware Volume Block Driver.
@param[in] ImageHandle The firmware allocated handle for the UEFI image.
@param[in] SystemTable A pointer to the EFI system table.
@retval EFI_SUCCESS This funtion always return EFI_SUCCESS.
It will ASSERT on errors.
**/
EFI_STATUS
EFIAPI
FvbSmmInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
FvbInitialize ();
return EFI_SUCCESS;
}
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