/** @file
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This file is the library for SA DXE Policy initialization.
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Copyright (c) 2017 - 2020 Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "DxeSaPolicyInit.h"
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#include <Library/ConfigBlockLib.h>
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#define SA_VTD_RMRR_USB_LENGTH 0x20000
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GLOBAL_REMOVE_IF_UNREFERENCED EFI_PHYSICAL_ADDRESS mAddress;
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GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSize;
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/**
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Update RMRR Base and Limit Address for USB.
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**/
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VOID
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UpdateRmrrUsbAddress (
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IN OUT SA_POLICY_PROTOCOL *SaPolicy
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)
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{
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EFI_STATUS Status;
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MISC_DXE_CONFIG *MiscDxeConfig;
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Status = GetConfigBlock ((VOID *)SaPolicy, &gMiscDxeConfigGuid, (VOID *)&MiscDxeConfig);
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ASSERT_EFI_ERROR (Status);
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mSize = EFI_SIZE_TO_PAGES(SA_VTD_RMRR_USB_LENGTH);
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mAddress = SIZE_4GB;
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Status = gBS->AllocatePages (
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AllocateMaxAddress,
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EfiReservedMemoryType,
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mSize,
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&mAddress
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);
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ASSERT_EFI_ERROR (Status);
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MiscDxeConfig->RmrrUsbBaseAddress[0] = mAddress;
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MiscDxeConfig->RmrrUsbBaseAddress[1] = mAddress + SA_VTD_RMRR_USB_LENGTH - 1;
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}
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/**
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Get data for platform policy from setup options.
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@param[in] SaPolicy The pointer to get SA Policy protocol instance
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@retval EFI_SUCCESS Operation success.
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**/
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EFI_STATUS
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EFIAPI
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UpdateDxeSaPolicy (
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IN OUT SA_POLICY_PROTOCOL *SaPolicy
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)
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{
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UpdateRmrrUsbAddress (SaPolicy);
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return EFI_SUCCESS;
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}
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