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3c2dc30d1b
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3169 This change separated the original Tcg2Smm module into 2 drivers: the SMM driver that registers callback for physical presence and memory clear; the Tcg2Acpi driver that patches and publishes ACPI table for runtime use. Tcg2Smm introduced an SMI root handler to allow Tcg2Acpi to communicate the NVS region used by Tpm.asl and exchange the registered SwSmiValue. Lastly, Tcg2Smm driver will publish gTcg2MmSwSmiRegisteredGuid at the end of entrypoint to ensure Tcg2Acpi to load after Tcg2Smm is ready to communicate. Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Qi Zhang <qi1.zhang@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Signed-off-by: Kun Qin <kun.q@outlook.com> Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com> Message-Id: <MWHPR06MB310295CC623EF7C062844DFFF3969@MWHPR06MB3102.namprd06.prod.outlook.com>
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/** @file
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The header file for Tcg2 SMM driver.
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Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
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Copyright (c) Microsoft Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __TCG2_SMM_H__
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#define __TCG2_SMM_H__
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#include <PiMm.h>
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#include <Guid/MemoryOverwriteControl.h>
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#include <Guid/TpmInstance.h>
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#include <Guid/TpmNvsMm.h>
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#include <Protocol/MmReadyToLock.h>
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#include <Protocol/SmmSwDispatch2.h>
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#include <Protocol/AcpiTable.h>
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#include <Protocol/SmmVariable.h>
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#include <Protocol/Tcg2Protocol.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/MmServicesTableLib.h>
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#include <Library/Tpm2CommandLib.h>
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#include <Library/Tcg2PhysicalPresenceLib.h>
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#include <Library/IoLib.h>
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#include <Library/PcdLib.h>
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#include <Library/Tpm2DeviceLib.h>
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#include <IndustryStandard/TpmPtp.h>
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//
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// The definition for TCG MOR
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//
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#define ACPI_FUNCTION_DSM_MEMORY_CLEAR_INTERFACE 1
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#define ACPI_FUNCTION_PTS_CLEAR_MOR_BIT 2
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//
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// The return code for Memory Clear Interface Functions
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//
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#define MOR_REQUEST_SUCCESS 0
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#define MOR_REQUEST_GENERAL_FAILURE 1
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/**
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Notify the system that the SMM variable driver is ready.
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**/
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VOID
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Tcg2NotifyMmReady (
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VOID
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);
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/**
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This function is an abstraction layer for implementation specific Mm buffer validation routine.
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@param Buffer The buffer start address to be checked.
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@param Length The buffer length to be checked.
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@retval TRUE This buffer is valid per processor architecture and not overlap with SMRAM.
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@retval FALSE This buffer is not valid per processor architecture or overlap with SMRAM.
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**/
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BOOLEAN
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IsBufferOutsideMmValid (
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IN EFI_PHYSICAL_ADDRESS Buffer,
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IN UINT64 Length
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);
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/**
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The driver's common initialization routine.
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It install callbacks for TPM physical presence and MemoryClear, and locate
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SMM variable to be used in the callback function.
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval Others Some error occurs when executing this entry point.
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**/
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EFI_STATUS
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InitializeTcgCommon (
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VOID
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);
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#endif // __TCG_SMM_H__
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