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   This program and the accompanying materials are licensed and made available under
   7   the terms and conditions of the BSD License which accompanies this distribution.
   8   The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14   @par Specification Reference:
  15   System Management BIOS (SMBIOS) Reference Specification v3.0.0
  16   dated 2015-Feb-12 (DSP0134)
  17   http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.0.0.pdf
  18
  19 **/
  20 #include <IndustryStandard/SmBios.h>
  21 #include <Library/UefiLib.h>
  22 #include <Library/BaseLib.h>
  23 #include <Library/BaseMemoryLib.h>
  24 #include <Library/MemoryAllocationLib.h>
  25 #include <Library/DebugLib.h>
  26 #include <Library/HobLib.h>
  27 #include <Library/UefiBootServicesTableLib.h>
  28 #include <Protocol/Smbios.h>
  29
  30
  31 /**
  32   Adds SMBIOS records to tables
  33
  34   @param[in] ImageHandle          Image handle of this driver.
  35   @param[in] SystemTable          Global system service table.
  36
  37   @retval EFI_UNSUPPORTED      -  Could not locate SMBIOS protocol
  38   @retval EFI_OUT_OF_RESOURCES -  Failed to allocate memory for SMBIOS HOB type.
  39   @retval EFI_SUCCESS          -  Successfully added SMBIOS records based on HOB.
  40 **/
  41 EFI_STATUS
  42 EFIAPI
  43 DxeSmbiosDataHobLibConstructor (
  44   IN EFI_HANDLE                ImageHandle,
  45   IN EFI_SYSTEM_TABLE          *SystemTable
  46   )
  47 {
  48   EFI_PEI_HOB_POINTERS         Hob;
  49   EFI_SMBIOS_HANDLE            SmbiosHandle;
  50   EFI_SMBIOS_PROTOCOL          *Smbios;
  51   EFI_STATUS                   Status;
  52   UINT8                        *RecordPtr;
  53   UINT16                       RecordCount;
  54
  55   RecordCount = 0;
  56
  57   DEBUG ((DEBUG_INFO, "Adding SMBIOS records from HOB..\n"));
  58
  59   Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&Smbios);
  60   if (Smbios == NULL) {
  61     DEBUG ((DEBUG_WARN, "Can't locate SMBIOS protocol\n"));
  62     return EFI_UNSUPPORTED;
  63   }
  64
  65   ///
  66   /// Get SMBIOS HOB data (each hob contains one SMBIOS record)
  67   ///
  68   for (Hob.Raw = GetHobList (); !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {
  69     if ((GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_GUID_EXTENSION) && (CompareGuid (&Hob.Guid->Name, &gIntelSmbiosDataHobGuid))) {
  70       RecordPtr = GET_GUID_HOB_DATA (Hob.Raw);
  71
  72       ///
  73       /// Add generic SMBIOS HOB to SMBIOS table
  74       ///
  75       DEBUG ((DEBUG_VERBOSE, "Add SMBIOS record type: %x\n", ((EFI_SMBIOS_TABLE_HEADER *) RecordPtr)->Type));
  76       SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
  77       Status = Smbios->Add (Smbios, NULL, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) RecordPtr);
  78       if (!EFI_ERROR (Status)) {
  79         RecordCount++;
  80       }
  81     }
  82   }
  83   DEBUG ((DEBUG_INFO, "Found %d Records and added to SMBIOS table.\n", RecordCount));
  84
  85   return EFI_SUCCESS;
  86 }
  87