Vlv2TbltDevicePkg/Library/FlashDeviceLib/FlashDeviceLibDxe.c

   1 /** @file
   2
   3   Copyright (c) 2004  - 2016, Intel Corporation. All rights reserved.<BR>
   4
   5   This program and the accompanying materials are licensed and made available under
   6   the terms and conditions of the BSD License that accompanies this distribution.
   7   The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13
  14
  15 **/
  16
  17 #include <PiDxe.h>
  18
  19 #include <Library/FlashDeviceLib.h>
  20 #include <Library/DebugLib.h>
  21 #include <Library/BaseLib.h>
  22 #include <Library/UefiBootServicesTableLib.h>
  23 #include <Library/BaseMemoryLib.h>
  24 #include "SpiChipDefinitions.h"
  25
  26 extern UINTN FlashDeviceBase;
  27
  28 extern EFI_SPI_PROTOCOL *mSpiProtocol;
  29
  30 /**
  31   The library constructuor.
  32
  33   The function does the necessary initialization work for this library
  34   instance. Please put all initialization works in it.
  35
  36   @param[in]  ImageHandle       The firmware allocated handle for the UEFI image.
  37   @param[in]  SystemTable       A pointer to the EFI system table.
  38
  39   @retval     EFI_SUCCESS       The function always return EFI_SUCCESS for now.
  40                                 It will ASSERT on error for debug version.
  41   @retval     EFI_ERROR         Please reference LocateProtocol for error code details.
  42
  43 **/
  44 EFI_STATUS
  45 EFIAPI
  46 LibFvbFlashDeviceSupportInit (
  47   IN EFI_HANDLE         ImageHandle,
  48   IN EFI_SYSTEM_TABLE   *SystemTable
  49   )
  50 {
  51   EFI_STATUS Status;
  52   Status = gBS->LocateProtocol (
  53                   &gEfiSpiProtocolGuid,
  54                   NULL,
  55                   (VOID **)&mSpiProtocol
  56                   );
  57   ASSERT_EFI_ERROR (Status);
  58   // There is no need to call Init, because Runtime or SMM FVB already does that.
  59   DEBUG((EFI_D_ERROR, "LibFvbFlashDeviceSupportInit - no init\n"));
  60   return EFI_SUCCESS;
  61 }
  62