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RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 OvmfPkg/PlatformPei is updated to support Tdx guest. There are below major changes. - Set Tdx related PCDs - Publish Tdx RamRegions In this patch there is another new function BuildPlatformInfoHob (). This function builds EFI_HOB_PLATFORM_INFO which contains the HostBridgeDevId. The hob is built in both Td guest and Non-Td guest. Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: Erdem Aktas <erdemaktas@google.com> Cc: James Bottomley <jejb@linux.ibm.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> Signed-off-by: Min Xu <min.m.xu@intel.com>
52 lines
1.2 KiB
C
52 lines
1.2 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/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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VOID
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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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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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PcdStatus = PcdSet64S (PcdTdxSharedBitMask, TdSharedPageMask ());
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ASSERT_RETURN_ERROR (PcdStatus);
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PcdStatus = PcdSetBoolS (PcdSetNxForStack, TRUE);
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ASSERT_RETURN_ERROR (PcdStatus);
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#endif
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}
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