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20dd836214
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3223 In the current design, memory protection is not available till CpuDxe is loaded. To resolve this, introduce CpuArchLib to move the CPU Architectural initialization to DxeCore. Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Vitaly Cheptsov <vit9696@protonmail.com> Signed-off-by: Marvin Häuser <mhaeuser@posteo.de>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/** @file
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Initialize Intel TDX support.
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Copyright (c) 2021, 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 <PiPei.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <IndustryStandard/Tdx.h>
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#include <IndustryStandard/QemuFwCfg.h>
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#include <Library/QemuFwCfgLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/TdxLib.h>
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#include <Library/TdxHelperLib.h>
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#include <Library/PlatformInitLib.h>
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#include <WorkArea.h>
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#include <ConfidentialComputingGuestAttr.h>
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#include "Platform.h"
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/**
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This Function checks if TDX is available, if present then it sets
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the dynamic PCDs for Tdx guest.
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**/
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VOID
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IntelTdxInitialize (
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IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
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)
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{
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#ifdef MDE_CPU_X64
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RETURN_STATUS PcdStatus;
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UINT64 PageMask;
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if (!TdIsEnabled ()) {
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return;
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}
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PcdStatus = PcdSet64S (PcdConfidentialComputingGuestAttr, CCAttrIntelTdx);
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ASSERT_RETURN_ERROR (PcdStatus);
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PlatformInfoHob->PcdConfidentialComputingGuestAttr = CCAttrIntelTdx;
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PageMask = TdSharedPageMask ();
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PcdStatus = PcdSet64S (PcdTdxSharedBitMask, PageMask);
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ASSERT_RETURN_ERROR (PcdStatus);
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PlatformInfoHob->PcdTdxSharedBitMask = PageMask;
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#endif
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}
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