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/** @file
A hook-in library for MdeModulePkg/Bus/Pci/PciHostBridgeDxe.
Plugging this library instance into PciHostBridgeDxe makes
PciHostBridgeDxe depend on the platform's dynamic decision whether
to provide IOMMU implementation (usually through IoMmuDxe driver).
Copyright (C) 2017, Red Hat, Inc.
Copyright (C) 2017, AMD, Inc.
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.
**/
#include <Base.h>
RETURN_STATUS
EFIAPI
PlatformHasIoMmuInitialize (
VOID
)
{
//
// Do nothing, just imbue PciHostBridgeDxe with a protocol dependency on
// gIoMmuAbsentProtocolGuid OR gEdkiiIoMmuProtocolGuid.
//
return RETURN_SUCCESS;
}
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