alder_lake_bios/Intel/AlderLake/ClientOneSiliconPkg/SystemAgent/SaInit/Dxe/SaInitFsp.c

/** @file
  This is the Fsp driver that initializes the Intel System Agent.

@copyright
  INTEL CONFIDENTIAL
  Copyright 2015 - 2019 Intel Corporation.

  The source code contained or described herein and all documents related to the
  source code ("Material") are owned by Intel Corporation or its suppliers or
  licensors. Title to the Material remains with Intel Corporation or its suppliers
  and licensors. The Material may contain trade secrets and proprietary and
  confidential information of Intel Corporation and its suppliers and licensors,
  and is protected by worldwide copyright and trade secret laws and treaty
  provisions. No part of the Material may be used, copied, reproduced, modified,
  published, uploaded, posted, transmitted, distributed, or disclosed in any way
  without Intel's prior express written permission.

  No license under any patent, copyright, trade secret or other intellectual
  property right is granted to or conferred upon you by disclosure or delivery
  of the Materials, either expressly, by implication, inducement, estoppel or
  otherwise. Any license under such intellectual property rights must be
  express and approved by Intel in writing.

  Unless otherwise agreed by Intel in writing, you may not remove or alter
  this notice or any other notice embedded in Materials by Intel or
  Intel's suppliers or licensors in any way.

  This file contains an 'Intel Peripheral Driver' and is uniquely identified as
  "Intel Reference Module" and is licensed for Intel CPUs and chipsets under
  the terms of your license agreement with Intel or your vendor. This file may
  be modified by the user, subject to additional terms of the license agreement.

@par Specification Reference:
**/
#include "SaInitFsp.h"
#include "SaInit.h"
#include <SaConfigHob.h>
#include <Protocol/PciEnumerationComplete.h>
#include <Library/TelemetryPrivateLib.h>

///
/// Global Variables
///
extern SA_CONFIG_HOB                *mSaConfigHob;

STATIC
EFI_PEI_NOTIFY_DESCRIPTOR  mSaOnEndOfSiInitNotifyList[] = {
  {
    (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK  | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
    &gEndOfSiInitPpiGuid,
    SaOnEndOfSiInitFsp
  }
};

STATIC
EFI_PEI_NOTIFY_DESCRIPTOR  mOnPciEnumerationCompleteNotifyList[] = {
  {
    (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK  | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
    &gEfiPciEnumerationCompleteProtocolGuid,
    SaOnPciEnumerationCompleteFsp
  }
};

EFI_PEI_NOTIFY_DESCRIPTOR  mEndOfFirmwareNotifyList[] = {
  {
    (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK  | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
    &gFspEventEndOfFirmwareGuid,
    SaPamLockFsp
  }
};

/**
  SystemAgent Fsp Initialization.

  @retval EFI_SUCCESS             The function completed successfully
  @retval EFI_OUT_OF_RESOURCES    No enough buffer to allocate
**/
EFI_STATUS
EFIAPI
SaInitEntryPointFspCommon (
  )
{
  EFI_STATUS                Status;

  DEBUG ((DEBUG_INFO, "SaInitEntryPointFspCommon() Start\n"));

  SaInitEntryPoint ();

  Status = PeiServicesNotifyPpi (mOnPciEnumerationCompleteNotifyList);
  ASSERT_EFI_ERROR (Status);

  DEBUG ((DEBUG_INFO, "Register for FspEventEndOfFirmware callback to set PAM lock before OS handoff\n"));
  Status = PeiServicesNotifyPpi (mEndOfFirmwareNotifyList);
  ASSERT_EFI_ERROR (Status);

  DEBUG ((DEBUG_INFO, "SaInitEntryPointFspCommon() End\n"));

  return Status;
}

/**
  SystemAgent Fsp Initialization.

  @param[in] FileHandle      PEIM's file handle
  @param[in] PeiServices     An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation

  @retval EFI_SUCCESS             The function completed successfully
  @retval EFI_OUT_OF_RESOURCES    No enough buffer to allocate
**/
EFI_STATUS
EFIAPI
SaInitEntryPointFsp (
  IN       EFI_PEI_FILE_HANDLE  FileHandle,
  IN CONST EFI_PEI_SERVICES     **PeiServices
  )
{
  EFI_STATUS                Status;

  DEBUG ((DEBUG_INFO, "SaInitFsp Start\n"));

  if (GetFspGlobalDataPointer()->FspMode == FSP_IN_DISPATCH_MODE) {
    //
    // In dispatch mode, wait until the SiInit PEIM is done
    //
    Status = PeiServicesNotifyPpi (mSaOnEndOfSiInitNotifyList);
    ASSERT_EFI_ERROR (Status);
  } else {
    //
    // In API mode, we can proceed immediately
    //
    Status = SaInitEntryPointFspCommon ();
  }

  DEBUG ((DEBUG_INFO, "SaInitFsp End\n"));

  return Status;
}

/**
  This function gets registered as a callback in FSP Dispatch mode to delay
  SaInitFsp PEIM execution until after the SiInit PEIM has completed.

  @param[in]  PeiServices       An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
  @param[in]  NotifyDescriptor  Address of the notification descriptor data structure.
  @param[in]  Ppi               Address of the PPI that was installed.

  @retval EFI_SUCCESS             The function completed successfully
  @retval EFI_OUT_OF_RESOURCES    No enough buffer to allocate
**/
EFI_STATUS
EFIAPI
SaOnEndOfSiInitFsp (
  IN  EFI_PEI_SERVICES            **PeiServices,
  IN  EFI_PEI_NOTIFY_DESCRIPTOR   *NotifyDescriptor,
  IN  VOID                        *Ppi
  )
{
  EFI_STATUS                Status;

  DEBUG ((DEBUG_INFO, "SaOnEndOfSiInitFsp() Start\n"));

  Status = SaInitEntryPointFspCommon ();

  DEBUG ((DEBUG_INFO, "SaOnEndOfSiInitFsp() End\n"));

  return Status;
}

/**
  This function gets registered as a callback to perform SA configuration security lock

  @param[in]  PeiServices       An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
  @param[in]  NotifyDescriptor  Address of the notification descriptor data structure.
  @param[in]  Ppi               Address of the PPI that was installed.

  @retval EFI_SUCCESS             The function completed successfully
  @retval EFI_OUT_OF_RESOURCES    No enough buffer to allocate
**/
EFI_STATUS
SaOnPciEnumerationCompleteFsp (
  IN  EFI_PEI_SERVICES            **PeiServices,
  IN  EFI_PEI_NOTIFY_DESCRIPTOR   *NotifyDescriptor,
  IN  VOID                        *Ppi
  )
{

  TelemetryMseEn();

  return EFI_SUCCESS;
}

/**
  This function locks the PAM register as part of the SA Security requirements.

  @param[in]  PeiServices       An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
  @param[in]  NotifyDescriptor  Address of the notification descriptor data structure.
  @param[in]  Ppi               Address of the PPI that was installed.

  @retval EFI_SUCCESS             The function completed successfully
  @retval EFI_OUT_OF_RESOURCES    No enough buffer to allocate
**/
EFI_STATUS
EFIAPI
SaPamLockFsp (
  IN  EFI_PEI_SERVICES            **PeiServices,
  IN  EFI_PEI_NOTIFY_DESCRIPTOR   *NotifyDescriptor,
  IN  VOID                        *Ppi
  )
{
  SaPamLock ();

  return EFI_SUCCESS;
}