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28 lines
674 B
C
28 lines
674 B
C
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/** @file
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A hook-in library for MdeModulePkg/Bus/Pci/PciHostBridgeDxe.
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Plugging this library instance into PciHostBridgeDxe makes
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PciHostBridgeDxe depend on the platform's dynamic decision whether
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to provide IOMMU implementation (usually through IoMmuDxe driver).
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Copyright (C) 2017, Red Hat, Inc.
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Copyright (C) 2017, AMD, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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RETURN_STATUS
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EFIAPI
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PlatformHasIoMmuInitialize (
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VOID
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)
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{
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//
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// Do nothing, just imbue PciHostBridgeDxe with a protocol dependency on
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// gIoMmuAbsentProtocolGuid OR gEdkiiIoMmuProtocolGuid.
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//
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return RETURN_SUCCESS;
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}
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