Reviewed-by: Ray Ni <[email protected]>
Thanks, Ray ________________________________ From: Tan, Dun <[email protected]> Sent: Friday, May 10, 2024 18:08 To: [email protected] <[email protected]> Cc: Ard Biesheuvel <[email protected]>; Yao, Jiewen <[email protected]>; Gerd Hoffmann <[email protected]>; Ni, Ray <[email protected]>; Wu, Jiaxin <[email protected]> Subject: [PATCH 02/18] OvmfPkg: Save MTRR by lockbox in CpuS3DataDxe 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 <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Jiewen Yao <[email protected]> Cc: Gerd Hoffmann <[email protected]> Cc: Ray Ni <[email protected]> Cc: Jiaxin Wu <[email protected]> --- OvmfPkg/CpuS3DataDxe/CpuS3Data.c | 11 +++++++++++ OvmfPkg/CpuS3DataDxe/CpuS3DataDxe.inf | 2 ++ 2 files changed, 13 insertions(+) diff --git a/OvmfPkg/CpuS3DataDxe/CpuS3Data.c b/OvmfPkg/CpuS3DataDxe/CpuS3Data.c index 289048b75d..d1aba32842 100644 --- a/OvmfPkg/CpuS3DataDxe/CpuS3Data.c +++ b/OvmfPkg/CpuS3DataDxe/CpuS3Data.c @@ -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. // diff --git a/OvmfPkg/CpuS3DataDxe/CpuS3DataDxe.inf b/OvmfPkg/CpuS3DataDxe/CpuS3DataDxe.inf index 228d5ae1b2..f5032a9222 100644 --- a/OvmfPkg/CpuS3DataDxe/CpuS3DataDxe.inf +++ b/OvmfPkg/CpuS3DataDxe/CpuS3DataDxe.inf @@ -46,9 +46,11 @@ MtrrLib UefiBootServicesTableLib UefiDriverEntryPoint + LockBoxLib [Guids] gEfiEndOfDxeEventGroupGuid ## CONSUMES ## Event + gEdkiiS3MtrrSettingGuid [Protocols] gEfiMpServiceProtocolGuid ## CONSUMES -- 2.31.1.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#118835): https://edk2.groups.io/g/devel/message/118835 Mute This Topic: https://groups.io/mt/106018122/21656 Group Owner: [email protected] Unsubscribe: https://edk2.groups.io/g/devel/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
