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UefiCpuPkg: 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: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
This commit is contained in:
Dun Tan 2024-04-23 11:18:41 +08:00 • committed by mergify[bot]
parent 32a9ee736e
commit 3a516aa240
2 changed files with 15 additions and 2 deletions
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13
UefiCpuPkg/CpuS3DataDxe/CpuS3Data.c
View file

@ -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, Red Hat, Inc.
SPDX-License-Identifier: BSD-2-Clause-Patent
@ -26,6 +26,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Library/DebugLib.h>
#include <Library/MtrrLib.h>
#include <Library/MemoryAllocationLib.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
UefiCpuPkg/CpuS3DataDxe/CpuS3DataDxe.inf
View file

@ -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, Red Hat, Inc.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
@ -46,9 +46,11 @@
BaseLib
MtrrLib
MemoryAllocationLib
LockBoxLib
[Guids]
gEfiEndOfDxeEventGroupGuid ## CONSUMES ## Event
gEdkiiS3MtrrSettingGuid
[Protocols]
gEfiMpServiceProtocolGuid ## CONSUMES