OvmfPkg: Add Tdx measurement data structure in WorkArea

[mirror_edk2.git] / OvmfPkg / Include / WorkArea.h

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