SecurityPkg/Include/Library/TrEEPpVendorLib.h

/** @file
  This library is to support Trusted Execution Environment (TrEE) ACPI Profile
  >= 128 Vendor Specific PPI Operation.

  The Vendor Specific PPI operation may change TPM state, BIOS TPM management
  flags, and may need additional boot cycle.
  
  Caution: This function may receive untrusted input.

Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials 
are licensed and made available under the terms and conditions of the BSD License 
which accompanies this distribution.  The full text of the license may be found at 
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#ifndef _TREE_PP_VENDOR_LIB_H_
#define _TREE_PP_VENDOR_LIB_H_

#include <IndustryStandard/Tpm20.h>
#include <Protocol/TrEEProtocol.h>

//
// The definition of physical presence operation actions
//
#define TREE_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION                         128

//
// The definition bit of the BIOS TPM Management Flags
//
// BIT0 is reserved
#define TREE_BIOS_TPM_MANAGEMENT_FLAG_NO_PPI_CLEAR                        BIT1
// BIT2 is reserved
#define TREE_VENDOR_LIB_FLAG_RESET_TRACK                                  BIT3

//
// The definition for TPM Operation Response to OS Environment
//
#define TREE_PP_OPERATION_RESPONSE_SUCCESS              0x0
#define TREE_PP_OPERATION_RESPONSE_USER_ABORT           0xFFFFFFF0
#define TREE_PP_OPERATION_RESPONSE_BIOS_FAILURE         0xFFFFFFF1

//
// The return code for Submit TPM Request to Pre-OS Environment
// and Submit TPM Request to Pre-OS Environment 2
//
#define TREE_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS                                  0
#define TREE_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED                          1
#define TREE_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE                          2
#define TREE_PP_SUBMIT_REQUEST_TO_PREOS_BLOCKED_BY_BIOS_SETTINGS                 3

//
// The return code for Get User Confirmation Status for Operation
//
#define TREE_PP_GET_USER_CONFIRMATION_NOT_IMPLEMENTED                                 0
#define TREE_PP_GET_USER_CONFIRMATION_BIOS_ONLY                                       1
#define TREE_PP_GET_USER_CONFIRMATION_BLOCKED_BY_BIOS_CONFIGURATION                   2
#define TREE_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_REQUIRED                     3
#define TREE_PP_GET_USER_CONFIRMATION_ALLOWED_AND_PPUSER_NOT_REQUIRED                 4

/**
  Check and execute the requested physical presence command.

  This API should be invoked in BIOS boot phase to process pending request.
  
  Caution: This function may receive untrusted input.
  
  If OperationRequest < 128, then ASSERT().

  @param[in]      PlatformAuth     platform auth value. NULL means no platform auth change.
  @param[in]      OperationRequest TPM physical presence operation request.
  @param[in, out] ManagementFlags  BIOS TPM Management Flags.
  @param[out]     ResetRequired    If reset is required to vendor settings in effect.
                                   True, it indicates the reset is required.
                                   False, it indicates the reset is not required.

  @return TPM Operation Response to OS Environment.
**/
UINT32
EFIAPI
TrEEPpVendorLibExecutePendingRequest (
  IN TPM2B_AUTH             *PlatformAuth,  OPTIONAL
  IN UINT32                 OperationRequest,
  IN OUT UINT32             *ManagementFlags,
  OUT BOOLEAN               *ResetRequired
  );

/**
  Check if there is a valid physical presence command request.

  This API should be invoked in BIOS boot phase to process pending request.
  
  Caution: This function may receive untrusted input.

  If OperationRequest < 128, then ASSERT().

  @param[in]      OperationRequest TPM physical presence operation request.
  @param[in]      ManagementFlags  BIOS TPM Management Flags.
  @param[out]     RequestConfirmed If the physical presence operation command required user confirm from UI.
                                   True, it indicates the command doesn't require user confirm.
                                   False, it indicates the command need user confirm from UI.

  @retval  TRUE        Physical Presence operation command is valid.
  @retval  FALSE       Physical Presence operation command is invalid.
**/
BOOLEAN
EFIAPI
TrEEPpVendorLibHasValidRequest (
  IN UINT32                 OperationRequest,
  IN UINT32                 ManagementFlags,
  OUT BOOLEAN               *RequestConfirmed
  );

/**
  The callback for TPM vendor specific physical presence which is called for
  Submit TPM Operation Request to Pre-OS Environment and
  Submit TPM Operation Request to Pre-OS Environment 2.

  This API should be invoked in OS runtime phase to interface with ACPI method.

  Caution: This function may receive untrusted input.
  
  If OperationRequest < 128, then ASSERT().

  @param[in]      OperationRequest TPM physical presence operation request.
  @param[in]      ManagementFlags  BIOS TPM Management Flags.

  @return Return Code for Submit TPM Operation Request to Pre-OS Environment and
          Submit TPM Operation Request to Pre-OS Environment 2.
**/
UINT32
EFIAPI
TrEEPpVendorLibSubmitRequestToPreOSFunction (
  IN UINT32                 OperationRequest,
  IN UINT32                 ManagementFlags
  );

/**
  The callback for TPM vendor specific physical presence which is called for
  Get User Confirmation Status for Operation.

  This API should be invoked in OS runtime phase to interface with ACPI method.

  Caution: This function may receive untrusted input.
  
  If OperationRequest < 128, then ASSERT().

  @param[in]      OperationRequest TPM physical presence operation request.
  @param[in]      ManagementFlags  BIOS TPM Management Flags.

  @return Return Code for Get User Confirmation Status for Operation.
**/
UINT32
EFIAPI
TrEEPpVendorLibGetUserConfirmationStatusFunction (
  IN UINT32                 OperationRequest,
  IN UINT32                 ManagementFlags
  );

#endif