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Last change
on this file since 99404 was 99404, checked in by vboxsync, 23 months ago |
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Devices/EFI/FirmwareNew: Update to edk2-stable202302 and make it build, bugref:4643
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Property svn:eol-style
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File size:
934 bytes
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| 1 | /** @file
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| 2 |
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| 3 | IoMmuDxe driver installs EDKII_IOMMU_PROTOCOL to provide the support for DMA
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| 4 | operations when SEV is enabled.
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| 5 |
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| 6 | Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
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| 7 |
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| 8 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 9 |
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| 10 | **/
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| 11 |
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| 12 | #include "CcIoMmu.h"
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| 13 |
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| 14 | EFI_STATUS
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| 15 | EFIAPI
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| 16 | IoMmuDxeEntryPoint (
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| 17 | IN EFI_HANDLE ImageHandle,
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| 18 | IN EFI_SYSTEM_TABLE *SystemTable
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| 19 | )
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| 20 | {
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| 21 | EFI_STATUS Status;
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| 22 | EFI_HANDLE Handle;
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| 23 |
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| 24 | //
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| 25 | // When SEV or TDX is enabled, install IoMmu protocol otherwise install the
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| 26 | // placeholder protocol so that other dependent module can run.
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| 27 | //
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| 28 | if (MemEncryptSevIsEnabled () || MemEncryptTdxIsEnabled ()) {
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| 29 | Status = InstallIoMmuProtocol ();
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| 30 | } else {
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| 31 | Handle = NULL;
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| 32 |
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| 33 | Status = gBS->InstallMultipleProtocolInterfaces (
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| 34 | &Handle,
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| 35 | &gIoMmuAbsentProtocolGuid,
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| 36 | NULL,
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| 37 | NULL
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| 38 | );
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| 39 | }
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| 40 |
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| 41 | return Status;
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| 42 | }
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