IntelSiliconPkg/Library/DxeSmbiosDataHobLib/DxeSmbiosDataHobLib.c

   1 /** @file
   2   Library to add SMBIOS data records from HOB to SMBIOS table.
   3
   4   Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
   5
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8   @par Specification Reference:
   9   System Management BIOS (SMBIOS) Reference Specification v3.0.0
  10   dated 2015-Feb-12 (DSP0134)
  11   http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.0.0.pdf
  12
  13 **/
  14 #include <IndustryStandard/SmBios.h>
  15 #include <Library/UefiLib.h>
  16 #include <Library/BaseLib.h>
  17 #include <Library/BaseMemoryLib.h>
  18 #include <Library/MemoryAllocationLib.h>
  19 #include <Library/DebugLib.h>
  20 #include <Library/HobLib.h>
  21 #include <Library/UefiBootServicesTableLib.h>
  22 #include <Protocol/Smbios.h>
  23
  24
  25 /**
  26   Adds SMBIOS records to tables
  27
  28   @param[in] ImageHandle          Image handle of this driver.
  29   @param[in] SystemTable          Global system service table.
  30
  31   @retval EFI_UNSUPPORTED      -  Could not locate SMBIOS protocol
  32   @retval EFI_OUT_OF_RESOURCES -  Failed to allocate memory for SMBIOS HOB type.
  33   @retval EFI_SUCCESS          -  Successfully added SMBIOS records based on HOB.
  34 **/
  35 EFI_STATUS
  36 EFIAPI
  37 DxeSmbiosDataHobLibConstructor (
  38   IN EFI_HANDLE                ImageHandle,
  39   IN EFI_SYSTEM_TABLE          *SystemTable
  40   )
  41 {
  42   EFI_PEI_HOB_POINTERS         Hob;
  43   EFI_SMBIOS_HANDLE            SmbiosHandle;
  44   EFI_SMBIOS_PROTOCOL          *Smbios;
  45   EFI_STATUS                   Status;
  46   UINT8                        *RecordPtr;
  47   UINT16                       RecordCount;
  48
  49   RecordCount = 0;
  50
  51   DEBUG ((DEBUG_INFO, "Adding SMBIOS records from HOB..\n"));
  52
  53   Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&Smbios);
  54   if (Smbios == NULL) {
  55     DEBUG ((DEBUG_WARN, "Can't locate SMBIOS protocol\n"));
  56     return EFI_UNSUPPORTED;
  57   }
  58
  59   ///
  60   /// Get SMBIOS HOB data (each hob contains one SMBIOS record)
  61   ///
  62   for (Hob.Raw = GetHobList (); !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {
  63     if ((GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_GUID_EXTENSION) && (CompareGuid (&Hob.Guid->Name, &gIntelSmbiosDataHobGuid))) {
  64       RecordPtr = GET_GUID_HOB_DATA (Hob.Raw);
  65
  66       ///
  67       /// Add generic SMBIOS HOB to SMBIOS table
  68       ///
  69       DEBUG ((DEBUG_VERBOSE, "Add SMBIOS record type: %x\n", ((EFI_SMBIOS_TABLE_HEADER *) RecordPtr)->Type));
  70       SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
  71       Status = Smbios->Add (Smbios, NULL, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) RecordPtr);
  72       if (!EFI_ERROR (Status)) {
  73         RecordCount++;
  74       }
  75     }
  76   }
  77   DEBUG ((DEBUG_INFO, "Found %d Records and added to SMBIOS table.\n", RecordCount));
  78
  79   return EFI_SUCCESS;
  80 }
  81