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Wed, 18 Jan 2023 11:01:17 -0600 From: "Abdul Lateef Attar" To: CC: Abdul Lateef Attar , Paul Grimes , Garrett Kirkendall , Abner Chang , Eric Dong , Ray Ni , Rahul Kumar , Gerd Hoffmann Subject: [PATCH v3 2/6] UefiCpuPkg: Adds SmmSmramSaveStateLib library class Date: Wed, 18 Jan 2023 22:31:04 +0530 Message-ID: <3496af23f5bdc7847148150cd7b97fb5d2b54702.1674060385.git.abdattar@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Return-Path: AbdulLateef.Attar@amd.com X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF00010209:EE_|SJ0PR12MB6808:EE_ X-MS-Office365-Filtering-Correlation-Id: 7cb9ccf6-cd75-4802-363f-08daf975a0b9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(376002)(136003)(346002)(396003)(39860400002)(451199015)(36840700001)(46966006)(40470700004)(2906002)(8676002)(26005)(4326008)(6916009)(40460700003)(36756003)(82310400005)(70206006)(41300700001)(70586007)(36860700001)(356005)(6666004)(2616005)(336012)(426003)(47076005)(40480700001)(54906003)(186003)(81166007)(316002)(7696005)(966005)(82740400003)(8936002)(5660300002)(478600001)(213903007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jan 2023 17:01:22.9016 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7cb9ccf6-cd75-4802-363f-08daf975a0b9 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF00010209.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB6808 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D4182 Adds SmmSmramSaveStateLib Library class in UefiCpuPkg.dec. Adds function declaration header file. Cc: Paul Grimes Cc: Garrett Kirkendall Cc: Abner Chang Cc: Eric Dong Cc: Ray Ni Cc: Rahul Kumar Cc: Gerd Hoffmann Signed-off-by: Abdul Lateef Attar --- UefiCpuPkg/UefiCpuPkg.dec | 4 ++ .../Include/Library/SmmSmramSaveStateLib.h | 70 +++++++++++++++++++ 2 files changed, 74 insertions(+) create mode 100644 UefiCpuPkg/Include/Library/SmmSmramSaveStateLib.h diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index cff239d5283e..1de90b677828 100644 --- a/UefiCpuPkg/UefiCpuPkg.dec +++ b/UefiCpuPkg/UefiCpuPkg.dec @@ -2,6 +2,7 @@ # This Package provides UEFI compatible CPU modules and libraries.=0D #=0D # Copyright (c) 2007 - 2022, Intel Corporation. All rights reserved.
=0D +# Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.
= =0D #=0D # SPDX-License-Identifier: BSD-2-Clause-Patent=0D #=0D @@ -65,6 +66,9 @@ [LibraryClasses.IA32, LibraryClasses.X64] ## @libraryclass Provides function for manipulating x86 paging structu= res.=0D CpuPageTableLib|Include/Library/CpuPageTableLib.h=0D =0D + ## @libraryclass Provides functions for manipulating Smram savestate r= egisters.=0D + SmmSmramSaveSateLib|Include/Library/SmmSmramSaveStateLib.h=0D +=0D [Guids]=0D gUefiCpuPkgTokenSpaceGuid =3D { 0xac05bf33, 0x995a, 0x4ed4, { 0xaa,= 0xb8, 0xef, 0x7a, 0xe8, 0xf, 0x5c, 0xb0 }}=0D gMsegSmramGuid =3D { 0x5802bce4, 0xeeee, 0x4e33, { 0xa1,= 0x30, 0xeb, 0xad, 0x27, 0xf0, 0xe4, 0x39 }}=0D diff --git a/UefiCpuPkg/Include/Library/SmmSmramSaveStateLib.h b/UefiCpuPkg= /Include/Library/SmmSmramSaveStateLib.h new file mode 100644 index 000000000000..46bc6381bcde --- /dev/null +++ b/UefiCpuPkg/Include/Library/SmmSmramSaveStateLib.h @@ -0,0 +1,70 @@ +/** @file=0D +Library that provides service to read/write CPU specific smram save state = registers.=0D +=0D +Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.
=0D +Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.
=0D +=0D +SPDX-License-Identifier: BSD-2-Clause-Patent=0D +=0D +**/=0D +=0D +#ifndef SMM_SMRAM_SAVE_STATE_LIB_H_=0D +#define SMM_SMRAM_SAVE_STATE_LIB_H_=0D +=0D +#include =0D +#include =0D +=0D +/**=0D + Read an SMM Save State register on the target processor. If this functi= on=0D + returns EFI_UNSUPPORTED, then the caller is responsible for reading the= =0D + SMM Save Sate register.=0D +=0D + @param[in] CpuIndex The index of the CPU to read the SMM Save State. = The=0D + value must be between 0 and the NumberOfCpus field= in=0D + the System Management System Table (SMST).=0D + @param[in] Register The SMM Save State register to read.=0D + @param[in] Width The number of bytes to read from the CPU save stat= e.=0D + @param[out] Buffer Upon return, this holds the CPU register value rea= d=0D + from the save state.=0D +=0D + @retval EFI_SUCCESS The register was read from Save State.=0D + @retval EFI_INVALID_PARAMTER Buffer is NULL.=0D + @retval EFI_UNSUPPORTED This function does not support reading Reg= ister.=0D + @retval EFI_NOT_FOUND If desired Register not found.=0D +**/=0D +EFI_STATUS=0D +EFIAPI=0D +SmramSaveStateReadRegister (=0D + IN UINTN CpuIndex,=0D + IN EFI_SMM_SAVE_STATE_REGISTER Register,=0D + IN UINTN Width,=0D + OUT VOID *Buffer=0D + );=0D +=0D +/**=0D + Writes an SMM Save State register on the target processor. If this func= tion=0D + returns EFI_UNSUPPORTED, then the caller is responsible for writing the= =0D + SMM Save Sate register.=0D +=0D + @param[in] CpuIndex The index of the CPU to write the SMM Save State. = The=0D + value must be between 0 and the NumberOfCpus field = in=0D + the System Management System Table (SMST).=0D + @param[in] Register The SMM Save State register to write.=0D + @param[in] Width The number of bytes to write to the CPU save state.= =0D + @param[in] Buffer Upon entry, this holds the new CPU register value.= =0D +=0D + @retval EFI_SUCCESS The register was written to Save State.=0D + @retval EFI_INVALID_PARAMTER Buffer is NULL.=0D + @retval EFI_UNSUPPORTED This function does not support writing Reg= ister.=0D + @retval EFI_NOT_FOUND If desired Register not found.=0D +**/=0D +EFI_STATUS=0D +EFIAPI=0D +SmramSaveStateWriteRegister (=0D + IN UINTN CpuIndex,=0D + IN EFI_SMM_SAVE_STATE_REGISTER Register,=0D + IN UINTN Width,=0D + IN CONST VOID *Buffer=0D + );=0D +=0D +#endif=0D --=20 2.25.1