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OvmfPkg: Save MTRR by lockbox in CpuS3DataDxe

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Save MTRR by lockbox in CpuS3DataDxe. In S3 boot,
The MTRR setting will be restored in S3Resume.c
in following patches. Then S3Resume.c will wakeup
all APs to load the MTRR setting. This can avoid
waking up APs in CpuS3.c.

Signed-off-by: Dun Tan <dun.tan@intel.com>
Reviewed-by: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
This commit is contained in:
Dun Tan 2024-04-23 11:10:00 +08:00 committed by mergify[bot]
parent 87f22f4b5c
commit 52a4bc65f6
2 changed files with 15 additions and 2 deletions
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13
OvmfPkg/CpuS3DataDxe/CpuS3Data.c
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@ -9,7 +9,7 @@ number of CPUs reported by the MP Services Protocol, so this module does not
support hot plug CPUs. This module can be copied into a CPU specific package
and customized if these additional features are required.
Copyright (c) 2013 - 2021, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2013 - 2024, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2015 - 2020, Red Hat, Inc.
SPDX-License-Identifier: BSD-2-Clause-Patent
@ -26,6 +26,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Library/MemoryAllocationLib.h>
#include <Library/MtrrLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/LockBoxLib.h>
#include <Protocol/MpService.h>
#include <Guid/EventGroup.h>
@ -130,6 +131,16 @@ CpuS3DataOnEndOfDxe (
DEBUG ((DEBUG_VERBOSE, "%a\n", __func__));
MtrrGetAllMtrrs (&AcpiCpuDataEx->MtrrTable);
//
// Save MTRR in lockbox
//
Status = SaveLockBox (
&gEdkiiS3MtrrSettingGuid,
&AcpiCpuDataEx->MtrrTable,
sizeof (MTRR_SETTINGS)
);
ASSERT_EFI_ERROR (Status);
//
// Close event, so it will not be invoked again.
//

4
OvmfPkg/CpuS3DataDxe/CpuS3DataDxe.inf
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@ -9,7 +9,7 @@
# support hot plug CPUs. This module can be copied into a CPU specific package
# and customized if these additional features are required.
#
# Copyright (c) 2013-2016, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2013-2024, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2015-2020, Red Hat, Inc.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
@ -46,9 +46,11 @@
MtrrLib
UefiBootServicesTableLib
UefiDriverEntryPoint
LockBoxLib
[Guids]
gEfiEndOfDxeEventGroupGuid ## CONSUMES ## Event
gEdkiiS3MtrrSettingGuid
[Protocols]
gEfiMpServiceProtocolGuid ## CONSUMES