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https://github.com/CloverHackyColor/CloverBootloader.git
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107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
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/** @file
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Work Area structure definition
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Copyright (c) 2021, AMD Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __OVMF_WORK_AREA_H__
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#define __OVMF_WORK_AREA_H__
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#include <ConfidentialComputingGuestAttr.h>
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#include <IndustryStandard/Tpm20.h>
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//
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// Confidential computing work area header definition. Any change
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// to the structure need to be kept in sync with the
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// PcdOvmfConfidentialComputingWorkAreaHeader.
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//
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// PcdOvmfConfidentialComputingWorkAreaHeader ==
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// sizeof (CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER)
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// PcdOvmfConfidentialComputingWorkAreaHeader defined in:
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// OvmfPkg/OvmfPkg.dec
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// OvmfPkg/Include/Fdf/OvmfPkgDefines.fdf.inc
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typedef struct _CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER {
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UINT8 GuestType;
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UINT8 Reserved1[3];
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} CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER;
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//
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// Internal structure for holding SEV-ES information needed during SEC phase
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// and valid only during SEC phase and early PEI during platform
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// initialization.
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//
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// This structure is also used by assembler files:
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// OvmfPkg/ResetVector/ResetVector.nasmb
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// OvmfPkg/ResetVector/Ia32/PageTables64.asm
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// OvmfPkg/ResetVector/Ia32/Flat32ToFlat64.asm
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// any changes must stay in sync with its usage.
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//
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typedef struct _SEC_SEV_ES_WORK_AREA {
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//
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// Hold the SevStatus MSR value read by OvmfPkg/ResetVector/Ia32/AmdSev.c
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//
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UINT64 SevStatusMsrValue;
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UINT64 RandomData;
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UINT64 EncryptionMask;
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//
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// Indicator that the VC handler is called. It is used during the SevFeature
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// detection in OvmfPkg/ResetVector/Ia32/AmdSev.c
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//
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UINT8 ReceivedVc;
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} SEC_SEV_ES_WORK_AREA;
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//
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// The SEV work area definition.
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//
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typedef struct _SEV_WORK_AREA {
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CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER Header;
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SEC_SEV_ES_WORK_AREA SevEsWorkArea;
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} SEV_WORK_AREA;
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//
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// Start of TDX Specific WorkArea definition
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//
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#define TDX_MEASUREMENT_TDHOB_BITMASK 0x1
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#define TDX_MEASUREMENT_CFVIMG_BITMASK 0x2
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typedef struct _TDX_MEASUREMENTS_DATA {
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UINT32 MeasurementsBitmap;
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UINT8 TdHobHashValue[SHA384_DIGEST_SIZE];
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UINT8 CfvImgHashValue[SHA384_DIGEST_SIZE];
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} TDX_MEASUREMENTS_DATA;
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//
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// The TDX work area definition
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//
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typedef struct _SEC_TDX_WORK_AREA {
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UINT32 PageTableReady;
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UINT32 Gpaw;
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UINT64 HobList;
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TDX_MEASUREMENTS_DATA TdxMeasurementsData;
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} SEC_TDX_WORK_AREA;
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typedef struct _TDX_WORK_AREA {
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CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER Header;
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SEC_TDX_WORK_AREA SecTdxWorkArea;
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} TDX_WORK_AREA;
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//
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// End of TDX Specific WorkArea definition
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//
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typedef union {
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CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER Header;
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SEV_WORK_AREA SevWorkArea;
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TDX_WORK_AREA TdxWorkArea;
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} OVMF_WORK_AREA;
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#endif
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