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MdePkg: Define ConfidentialComputingGuestAttr 

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275

While initializing APs, the MpInitLib may need to know whether the
guest is running with active AMD SEV or Intel TDX memory encryption.

Add a new ConfidentialComputingGuestAttr PCD that can be used to query
the memory encryption attribute.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Michael Roth <michael.roth@amd.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Ray Ni <ray.ni@intel.com>
Suggested-by: Jiewen Yao <jiewen.yao@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
This commit is contained in:
Brijesh Singh via groups.io 2021-12-09 11:27:48 +08:00 committed by mergify[bot]
parent 8eb79b5f4f
commit 26210f9436
2 changed files with 29 additions and 0 deletions
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25
MdePkg/Include/ConfidentialComputingGuestAttr.h Normal file
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@ -0,0 +1,25 @@
/** @file
Definitions for Confidential Computing Attribute
Copyright (c) 2021 AMD Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef CONFIDENTIAL_COMPUTING_GUEST_ATTR_H_
#define CONFIDENTIAL_COMPUTING_GUEST_ATTR_H_
typedef enum {
/* The guest is running with memory encryption disabled. */
CCAttrNotEncrypted = 0,
/* The guest is running with AMD SEV memory encryption enabled. */
CCAttrAmdSev = 0x100,
CCAttrAmdSevEs = 0x101,
CCAttrAmdSevSnp = 0x102,
/* The guest is running with Intel TDX memory encryption enabled. */
CCAttrIntelTdx = 0x200,
} CONFIDENTIAL_COMPUTING_GUEST_ATTR;
#endif

4
MdePkg/MdePkg.dec
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@ -2396,5 +2396,9 @@
# @Prompt FSB Clock. # @Prompt FSB Clock.
gEfiMdePkgTokenSpaceGuid.PcdFSBClock|200000000|UINT32|0x0000000c gEfiMdePkgTokenSpaceGuid.PcdFSBClock|200000000|UINT32|0x0000000c
## This dynamic PCD indicates the memory encryption attribute of the guest.
# @Prompt Memory encryption attribute
gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr|0|UINT64|0x0000002e
[UserExtensions.TianoCore."ExtraFiles"] [UserExtensions.TianoCore."ExtraFiles"]
MdePkgExtra.uni MdePkgExtra.uni