EmbeddedPkg/Library/PlatformHasAcpiLib/PlatformHasAcpiLib.c

   1 /** @file
   2   A hook-in library for MdeModulePkg/Universal/Acpi/AcpiTableDxe.
   3
   4   Plugging this library instance into AcpiTableDxe makes
   5   EFI_ACPI_TABLE_PROTOCOL and (if enabled) EFI_ACPI_SDT_PROTOCOL depend on the
   6   platform's dynamic decision whether to expose an ACPI-based hardware
   7   description to the operating system.
   8
   9   Universal and platform specific DXE drivers that produce ACPI tables depend
  10   on EFI_ACPI_TABLE_PROTOCOL / EFI_ACPI_SDT_PROTOCOL in turn.
  11
  12   Copyright (C) 2017, Red Hat, Inc.
  13
  14   This program and the accompanying materials are licensed and made available
  15   under the terms and conditions of the BSD License which accompanies this
  16   distribution. The full text of the license may be found at
  17   http://opensource.org/licenses/bsd-license.php
  18
  19   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
  20   WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  21 **/
  22
  23 #include <Base.h>
  24
  25 RETURN_STATUS
  26 EFIAPI
  27 PlatformHasAcpiInitialize (
  28   VOID
  29   )
  30 {
  31   //
  32   // Do nothing, just imbue AcpiTableDxe with a protocol dependency on
  33   // EDKII_PLATFORM_HAS_ACPI_GUID.
  34   //
  35   return RETURN_SUCCESS;
  36 }