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/** @file
SMM Library instance of SPI Flash Common Library Class
Copyright (c) 2021 - 2024, Intel Corporation. All rights reserved.<BR>
Copyright (c) Microsoft Corporation.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/MmServicesTableLib.h>
#include <Protocol/Spi2.h>
#include <Library/DebugLib.h>
extern PCH_SPI2_PROTOCOL *mSpi2Protocol;
extern UINTN mBiosAreaBaseAddress;
extern UINTN mBiosSize;
extern UINTN mBiosOffset;
/**
The library constructor.
The function does the necessary initialization work for this library
instance.
@param[in] ImageHandle The firmware allocated handle for the UEFI image.
@param[in] SystemTable A pointer to the EFI system table.
@retval EFI_SUCCESS The function always return EFI_SUCCESS for now.
It will ASSERT on error for debug version.
@retval EFI_ERROR Please reference LocateProtocol for error code details.
**/
EFI_STATUS
EFIAPI
SmmSpiFlashCommonLibConstructor (
VOID
)
{
EFI_STATUS Status;
UINT32 BaseAddr;
UINT32 RegionSize;
mBiosAreaBaseAddress = (UINTN)PcdGet32 (PcdBiosAreaBaseAddress);
mBiosSize = (UINTN)PcdGet32 (PcdBiosSize);
//
// Locate the SMM SPI2 protocol.
//
Status = gMmst->MmLocateProtocol (
&gPchSmmSpi2ProtocolGuid,
NULL,
(VOID **) &mSpi2Protocol
);
ASSERT_EFI_ERROR (Status);
mSpi2Protocol->GetRegionAddress (mSpi2Protocol, &gFlashRegionBiosGuid, &BaseAddr, &RegionSize);
mBiosOffset = BaseAddr;
return Status;
}
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