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/** @file
Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiDxe.h>
#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Guid/SystemNvDataGuid.h>
#include <Guid/NvVariableInfoGuid.h>
#include <Library/HobLib.h>
/**
Initialize the variable store
@retval EFI_SUCCESS if initialize the store success.
**/
EFI_STATUS
EFIAPI
PcdInitConstructor (
VOID
)
{
EFI_STATUS Status;
UINT32 NvStorageBase;
UINT32 NvStorageSize;
UINT32 NvVariableSize;
UINT32 FtwWorkingSize;
UINT32 FtwSpareSize;
EFI_HOB_GUID_TYPE *GuidHob;
NV_VARIABLE_INFO *NvVariableInfo;
//
// Find SPI flash variable hob
//
GuidHob = GetFirstGuidHob (&gNvVariableInfoGuid);
if (GuidHob == NULL) {
ASSERT (FALSE);
return EFI_NOT_FOUND;
}
NvVariableInfo = (NV_VARIABLE_INFO *)GET_GUID_HOB_DATA (GuidHob);
//
// Get variable region base and size.
//
NvStorageSize = NvVariableInfo->VariableStoreSize;
NvStorageBase = NvVariableInfo->VariableStoreBase;
//
// NvStorageBase needs to be 4KB aligned, NvStorageSize needs to be 8KB * n
//
if (((NvStorageBase & (SIZE_4KB - 1)) != 0) || ((NvStorageSize & (SIZE_8KB - 1)) != 0)) {
return EFI_INVALID_PARAMETER;
}
FtwSpareSize = NvStorageSize / 2;
FtwWorkingSize = 0x2000;
NvVariableSize = NvStorageSize / 2 - FtwWorkingSize;
DEBUG ((DEBUG_INFO, "NvStorageBase:0x%x, NvStorageSize:0x%x\n", NvStorageBase, NvStorageSize));
if (NvVariableSize >= 0x80000000) {
return EFI_INVALID_PARAMETER;
}
Status = PcdSet32S (PcdFlashNvStorageVariableSize, NvVariableSize);
ASSERT_EFI_ERROR (Status);
Status = PcdSet32S (PcdFlashNvStorageVariableBase, NvStorageBase);
ASSERT_EFI_ERROR (Status);
Status = PcdSet64S (PcdFlashNvStorageVariableBase64, NvStorageBase);
ASSERT_EFI_ERROR (Status);
Status = PcdSet32S (PcdFlashNvStorageFtwWorkingSize, FtwWorkingSize);
ASSERT_EFI_ERROR (Status);
Status = PcdSet32S (PcdFlashNvStorageFtwWorkingBase, NvStorageBase + NvVariableSize);
ASSERT_EFI_ERROR (Status);
Status = PcdSet32S (PcdFlashNvStorageFtwSpareSize, FtwSpareSize);
ASSERT_EFI_ERROR (Status);
Status = PcdSet32S (PcdFlashNvStorageFtwSpareBase, NvStorageBase + FtwSpareSize);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}
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