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   SPDX-License-Identifier: BSD-2-Clause-Patent
  15 **/
  16
  17 #include <Base.h>
  18
  19 RETURN_STATUS
  20 EFIAPI
  21 PlatformHasAcpiInitialize (
  22   VOID
  23   )
  24 {
  25   //
  26   // Do nothing, just imbue AcpiTableDxe with a protocol dependency on
  27   // EDKII_PLATFORM_HAS_ACPI_GUID.
  28   //
  29   return RETURN_SUCCESS;
  30 }