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09f01d4efb
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4171 IoMmuDxe once was designed to support DMA operation when SEV is enabled. After TDX is enabled in IoMmuDxe, some files' name in IoMmuDxe need to be more general. So this patch rename: AmdSevIoMmu.h -> CcIoMmu.h AmdSevIoMmu.c -> CcIoMmu.c Accordingly there are some udates in IoMmuDxe.c and IoMmuDxe.inf. Cc: Erdem Aktas <erdemaktas@google.com> Cc: James Bottomley <jejb@linux.ibm.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com> Signed-off-by: Min Xu <min.m.xu@intel.com> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
43 lines
976 B
C
43 lines
976 B
C
/** @file
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IoMmuDxe driver installs EDKII_IOMMU_PROTOCOL to provide the support for DMA
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operations when SEV is enabled.
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Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "CcIoMmu.h"
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EFI_STATUS
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EFIAPI
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IoMmuDxeEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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EFI_HANDLE Handle;
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//
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// When SEV or TDX is enabled, install IoMmu protocol otherwise install the
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// placeholder protocol so that other dependent module can run.
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//
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if (MemEncryptSevIsEnabled () || MemEncryptTdxIsEnabled ()) {
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Status = InstallIoMmuProtocol ();
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} else {
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Handle = NULL;
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Status = gBS->InstallMultipleProtocolInterfaces (
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&Handle,
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&gIoMmuAbsentProtocolGuid,
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NULL,
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NULL
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);
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}
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return Status;
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}
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