audk/OvmfPkg/Include/IndustryStandard/QemuTpm.h

/** @file
  Macro and type definitions corresponding to the QEMU TPM interface.

  Refer to "docs/specs/tpm.txt" in the QEMU source directory.

  Copyright (C) 2018, Red Hat, Inc.
  Copyright (c) 2018, IBM Corporation. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent
**/

#ifndef __QEMU_TPM_H__
#define __QEMU_TPM_H__

#include <Base.h>

//
// whether function is blocked by BIOS settings; bits 0, 1, 2
//
#define QEMU_TPM_PPI_FUNC_NOT_IMPLEMENTED     (0 << 0)
#define QEMU_TPM_PPI_FUNC_BIOS_ONLY           (1 << 0)
#define QEMU_TPM_PPI_FUNC_BLOCKED             (2 << 0)
#define QEMU_TPM_PPI_FUNC_ALLOWED_USR_REQ     (3 << 0)
#define QEMU_TPM_PPI_FUNC_ALLOWED_USR_NOT_REQ (4 << 0)
#define QEMU_TPM_PPI_FUNC_MASK                (7 << 0)

//
// The following structure is shared between firmware and ACPI.
//
#pragma pack (1)
typedef struct {
  UINT8  Func[256];           // func
  UINT8  In;                  // ppin
  UINT32 Ip;                  // ppip
  UINT32 Response;            // pprp
  UINT32 Request;             // pprq
  UINT32 RequestParameter;    // pprm
  UINT32 LastRequest;         // lppr
  UINT32 FRet;                // fret
  UINT8  Res1[0x40];          // res1
  UINT8  NextStep;            // next_step
} QEMU_TPM_PPI;
#pragma pack ()

//
// The following structure is for the fw_cfg etc/tpm/config file.
//
#pragma pack (1)
typedef struct {
  UINT32 PpiAddress;
  UINT8  TpmVersion;
  UINT8  PpiVersion;
} QEMU_FWCFG_TPM_CONFIG;
#pragma pack ()

#define QEMU_TPM_VERSION_UNSPEC    0
#define QEMU_TPM_VERSION_1_2       1
#define QEMU_TPM_VERSION_2         2

#define QEMU_TPM_PPI_VERSION_NONE  0
#define QEMU_TPM_PPI_VERSION_1_30  1

#endif