Vlv2TbltDevicePkg/Feature/Capsule/SystemFirmwareDescriptor/SystemFirmwareDescriptorPei.c

/** @file
  System Firmware descriptor producer.

  Copyright (c) 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.

**/

#include <PiPei.h>
#include <Library/PcdLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/DebugLib.h>
#include <Protocol/FirmwareManagement.h>
#include <Guid/EdkiiSystemFmpCapsule.h>

/**
  Entrypoint for SystemFirmwareDescriptor PEIM.

  @param[in]  FileHandle  Handle of the file being invoked.
  @param[in]  PeiServices Describes the list of possible PEI Services.

  @retval EFI_SUCCESS            PPI successfully installed.
**/
EFI_STATUS
EFIAPI
SystemFirmwareDescriptorPeimEntry (
  IN EFI_PEI_FILE_HANDLE     FileHandle,
  IN CONST EFI_PEI_SERVICES  **PeiServices
  )
{
  EFI_STATUS                              Status;
  EDKII_SYSTEM_FIRMWARE_IMAGE_DESCRIPTOR  *Descriptor;
  UINTN                                   Size;
  UINTN                                   Index;
  UINT32                                  AuthenticationStatus;

  //
  // Search RAW section.
  //
  Index = 0;
  while (TRUE) {
    Status = PeiServicesFfsFindSectionData3(EFI_SECTION_RAW, Index, FileHandle, (VOID **)&Descriptor, &AuthenticationStatus);
    if (EFI_ERROR(Status)) {
      // Should not happen, must something wrong in FDF.
      ASSERT(FALSE);
      return EFI_NOT_FOUND;
    }
    if (Descriptor->Signature == EDKII_SYSTEM_FIRMWARE_IMAGE_DESCRIPTOR_SIGNATURE) {
      break;
    }
    Index++;
  }

  DEBUG((DEBUG_INFO, "EDKII_SYSTEM_FIRMWARE_IMAGE_DESCRIPTOR size - 0x%x\n", Descriptor->Length));

  Size = Descriptor->Length;
  PcdSetPtrS (PcdEdkiiSystemFirmwareImageDescriptor, &Size, Descriptor);

  return EFI_SUCCESS;
}