Vlv2TbltDevicePkg/Feature/Capsule/SystemFirmwareDescriptor/SystemFirmwareDescriptorPei.c

   1 /** @file
   2   System Firmware descriptor producer.
   3
   4   Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <PiPei.h>
  10 #include <Library/PcdLib.h>
  11 #include <Library/PeiServicesLib.h>
  12 #include <Library/DebugLib.h>
  13 #include <Protocol/FirmwareManagement.h>
  14 #include <Guid/EdkiiSystemFmpCapsule.h>
  15
  16 /**
  17   Entrypoint for SystemFirmwareDescriptor PEIM.
  18
  19   @param[in]  FileHandle  Handle of the file being invoked.
  20   @param[in]  PeiServices Describes the list of possible PEI Services.
  21
  22   @retval EFI_SUCCESS            PPI successfully installed.
  23 **/
  24 EFI_STATUS
  25 EFIAPI
  26 SystemFirmwareDescriptorPeimEntry (
  27   IN EFI_PEI_FILE_HANDLE     FileHandle,
  28   IN CONST EFI_PEI_SERVICES  **PeiServices
  29   )
  30 {
  31   EFI_STATUS                              Status;
  32   EDKII_SYSTEM_FIRMWARE_IMAGE_DESCRIPTOR  *Descriptor;
  33   UINTN                                   Size;
  34   UINTN                                   Index;
  35   UINT32                                  AuthenticationStatus;
  36
  37   //
  38   // Search RAW section.
  39   //
  40   Index = 0;
  41   while (TRUE) {
  42     Status = PeiServicesFfsFindSectionData3(EFI_SECTION_RAW, Index, FileHandle, (VOID **)&Descriptor, &AuthenticationStatus);
  43     if (EFI_ERROR(Status)) {
  44       // Should not happen, must something wrong in FDF.
  45       ASSERT(FALSE);
  46       return EFI_NOT_FOUND;
  47     }
  48     if (Descriptor->Signature == EDKII_SYSTEM_FIRMWARE_IMAGE_DESCRIPTOR_SIGNATURE) {
  49       break;
  50     }
  51     Index++;
  52   }
  53
  54   DEBUG((DEBUG_INFO, "EDKII_SYSTEM_FIRMWARE_IMAGE_DESCRIPTOR size - 0x%x\n", Descriptor->Length));
  55
  56   Size = Descriptor->Length;
  57   PcdSetPtrS (PcdEdkiiSystemFirmwareImageDescriptor, &Size, Descriptor);
  58
  59   return EFI_SUCCESS;
  60 }