MdePkg/Include/Library/HstiLib.h

/** @file
  Provides services to create, get and update HSTI table in AIP protocol.

  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __HSTI_LIB_H__
#define __HSTI_LIB_H__

/**
  Publish HSTI table in AIP protocol.

  One system should have only one PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE.

  If the Role is NOT PLATFORM_SECURITY_ROLE_PLATFORM_REFERENCE,
  SecurityFeaturesRequired field will be ignored.

  @param Hsti      HSTI data
  @param HstiSize  HSTI size

  @retval EFI_SUCCESS          The HSTI data is published in AIP protocol.
  @retval EFI_ALREADY_STARTED  There is already HSTI table with Role and ImplementationID published in system.
  @retval EFI_VOLUME_CORRUPTED The input HSTI data does not follow HSTI specification.
  @retval EFI_OUT_OF_RESOURCES There is not enough system resource to publish HSTI data in AIP protocol.
**/
EFI_STATUS
EFIAPI
HstiLibSetTable (
  IN VOID   *Hsti,
  IN UINTN  HstiSize
  );

/**
  Search HSTI table in AIP protocol, and return the data.
  This API will return the HSTI table with indicated Role and ImplementationID,
  NULL ImplementationID means to find the first HSTI table with indicated Role.

  @param Role             Role of HSTI data.
  @param ImplementationID ImplementationID of HSTI data.
                          NULL means find the first one match Role.
  @param Hsti             HSTI data. This buffer is allocated by callee, and it
                          is the responsibility of the caller to free it after
                          using it.
  @param HstiSize         HSTI size

  @retval EFI_SUCCESS          The HSTI data in AIP protocol is returned.
  @retval EFI_NOT_FOUND        There is not HSTI table with the Role and ImplementationID published in system.
**/
EFI_STATUS
EFIAPI
HstiLibGetTable (
  IN UINT32  Role,
  IN CHAR16  *ImplementationID OPTIONAL,
  OUT VOID   **Hsti,
  OUT UINTN  *HstiSize
  );

/**
  Set FeaturesVerified in published HSTI table.
  This API will update the HSTI table with indicated Role and ImplementationID,
  NULL ImplementationID means to find the first HSTI table with indicated Role.

  @param Role             Role of HSTI data.
  @param ImplementationID ImplementationID of HSTI data.
                          NULL means find the first one match Role.
  @param ByteIndex        Byte index of FeaturesVerified of HSTI data.
  @param BitMask          Bit mask of FeaturesVerified of HSTI data.

  @retval EFI_SUCCESS          The FeaturesVerified of HSTI data updated in AIP protocol.
  @retval EFI_NOT_STARTED      There is not HSTI table with the Role and ImplementationID published in system.
  @retval EFI_UNSUPPORTED      The ByteIndex is invalid.
**/
EFI_STATUS
EFIAPI
HstiLibSetFeaturesVerified (
  IN UINT32  Role,
  IN CHAR16  *ImplementationID  OPTIONAL,
  IN UINT32  ByteIndex,
  IN UINT8   BitMask
  );

/**
  Clear FeaturesVerified in published HSTI table.
  This API will update the HSTI table with indicated Role and ImplementationID,
  NULL ImplementationID means to find the first HSTI table with indicated Role.

  @param Role             Role of HSTI data.
  @param ImplementationID ImplementationID of HSTI data.
                          NULL means find the first one match Role.
  @param ByteIndex        Byte index of FeaturesVerified of HSTI data.
  @param BitMask          Bit mask of FeaturesVerified of HSTI data.

  @retval EFI_SUCCESS          The FeaturesVerified of HSTI data updated in AIP protocol.
  @retval EFI_NOT_STARTED      There is not HSTI table with the Role and ImplementationID published in system.
  @retval EFI_UNSUPPORTED      The ByteIndex is invalid.
**/
EFI_STATUS
EFIAPI
HstiLibClearFeaturesVerified (
  IN UINT32  Role,
  IN CHAR16  *ImplementationID  OPTIONAL,
  IN UINT32  ByteIndex,
  IN UINT8   BitMask
  );

/**
  Append ErrorString in published HSTI table.
  This API will update the HSTI table with indicated Role and ImplementationID,
  NULL ImplementationID means to find the first HSTI table with indicated Role.

  @param Role             Role of HSTI data.
  @param ImplementationID ImplementationID of HSTI data.
                          NULL means find the first one match Role.
  @param ErrorString      ErrorString of HSTI data.

  @retval EFI_SUCCESS          The ErrorString of HSTI data is updated in AIP protocol.
  @retval EFI_NOT_STARTED      There is not HSTI table with the Role and ImplementationID published in system.
  @retval EFI_OUT_OF_RESOURCES There is not enough system resource to update ErrorString.
**/
EFI_STATUS
EFIAPI
HstiLibAppendErrorString (
  IN UINT32  Role,
  IN CHAR16  *ImplementationID  OPTIONAL,
  IN CHAR16  *ErrorString
  );

/**
  Set a new ErrorString in published HSTI table.
  This API will update the HSTI table with indicated Role and ImplementationID,
  NULL ImplementationID means to find the first HSTI table with indicated Role.

  @param Role             Role of HSTI data.
  @param ImplementationID ImplementationID of HSTI data.
                          NULL means find the first one match Role.
  @param ErrorString      ErrorString of HSTI data.

  @retval EFI_SUCCESS          The ErrorString of HSTI data is updated in AIP protocol.
  @retval EFI_NOT_STARTED      There is not HSTI table with the Role and ImplementationID published in system.
  @retval EFI_OUT_OF_RESOURCES There is not enough system resource to update ErrorString.
**/
EFI_STATUS
EFIAPI
HstiLibSetErrorString (
  IN UINT32  Role,
  IN CHAR16  *ImplementationID  OPTIONAL,
  IN CHAR16  *ErrorString
  );

#endif