audk/IntelSiliconPkg/Library/DxeSmbiosDataHobLib/DxeSmbiosDataHobLib.c

/** @file
  Library to add SMBIOS data records from HOB to SMBIOS table.

  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.

  @par Specification Reference:
  System Management BIOS (SMBIOS) Reference Specification v3.0.0
  dated 2015-Feb-12 (DSP0134)
  http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.0.0.pdf

**/
#include <IndustryStandard/SmBios.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/Smbios.h>


/**
  Adds SMBIOS records to tables

  @param[in] ImageHandle          Image handle of this driver.
  @param[in] SystemTable          Global system service table.

  @retval EFI_UNSUPPORTED      -  Could not locate SMBIOS protocol
  @retval EFI_OUT_OF_RESOURCES -  Failed to allocate memory for SMBIOS HOB type.
  @retval EFI_SUCCESS          -  Successfully added SMBIOS records based on HOB.
**/
EFI_STATUS
EFIAPI
DxeSmbiosDataHobLibConstructor (
  IN EFI_HANDLE                ImageHandle,
  IN EFI_SYSTEM_TABLE          *SystemTable
  )
{
  EFI_PEI_HOB_POINTERS         Hob;
  EFI_SMBIOS_HANDLE            SmbiosHandle;
  EFI_SMBIOS_PROTOCOL          *Smbios;
  EFI_STATUS                   Status;
  UINT8                        *RecordPtr;
  UINT16                       RecordCount;

  RecordCount = 0;

  DEBUG ((DEBUG_INFO, "Adding SMBIOS records from HOB..\n"));

  Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&Smbios);
  if (Smbios == NULL) {
    DEBUG ((DEBUG_WARN, "Can't locate SMBIOS protocol\n"));
    return EFI_UNSUPPORTED;
  }

  ///
  /// Get SMBIOS HOB data (each hob contains one SMBIOS record)
  ///
  for (Hob.Raw = GetHobList (); !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {
    if ((GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_GUID_EXTENSION) && (CompareGuid (&Hob.Guid->Name, &gIntelSmbiosDataHobGuid))) {
      RecordPtr = GET_GUID_HOB_DATA (Hob.Raw);

      ///
      /// Add generic SMBIOS HOB to SMBIOS table
      ///
      DEBUG ((DEBUG_VERBOSE, "Add SMBIOS record type: %x\n", ((EFI_SMBIOS_TABLE_HEADER *) RecordPtr)->Type));
      SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
      Status = Smbios->Add (Smbios, NULL, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) RecordPtr);
      if (!EFI_ERROR (Status)) {
        RecordCount++;
      }
    }
  }
  DEBUG ((DEBUG_INFO, "Found %d Records and added to SMBIOS table.\n", RecordCount));

  return EFI_SUCCESS;
}