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https://github.com/tianocore/edk2
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Introduce Tpm2DeviceTableLib to generate SSDT table which describes Tpm2 devices. This dynamic table generation is controlled by PcdGenTpm2DeviceTable which default value is FALSE. When it is TRUE, the TPM2 device ssdt table is generated when TPM2 ACPI table is generated. Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/** @file
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Tpm2 device table generating Library
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Copyright (c) 2025, Arm Limited. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef TPM2_DEVICE_TABLE_LIB_H_
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#define TPM2_DEVICE_TABLE_LIB_H_
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/** Build a SSDT table describing the TPM2 device.
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The table created by this function must be freed by FreeTpm2DeviceTable.
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@param [in] TpmDevInfo TPM2 Device info to describe in the SSDT table.
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@param [in] Name The Name to give to the Device.
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Must be a NULL-terminated ASL NameString
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e.g.: "DEV0", "DV15.DEV0", etc.
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@param [in] Uid UID for the TPM@ device.
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@param [out] Table If success, pointer to the created SSDT table.
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@retval EFI_SUCCESS Table generated successfully.
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@retval EFI_INVALID_PARAMETER A parameter is invalid.
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@retval EFI_NOT_FOUND Could not find information.
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@retval EFI_OUT_OF_RESOURCES Could not allocate memory.
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**/
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EFI_STATUS
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EFIAPI
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BuildTpm2DeviceTable (
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IN CONST CM_ARCH_COMMON_TPM2_DEVICE_INFO *TpmDevInfo,
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IN CONST CHAR8 *Name,
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IN CONST UINT64 Uid,
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OUT EFI_ACPI_DESCRIPTION_HEADER **Table
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);
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/** Free an Tpm2 device table previously created by
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the BuildTpm2DeviceTable function.
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@param [in] Table Pointer to a Tpm2 Device table allocated by
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the BuildTpm2DeviceTable function.
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**/
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VOID
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EFIAPI
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FreeTpm2DeviceTable (
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IN EFI_ACPI_DESCRIPTION_HEADER *Table
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);
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#endif // TPM2_DEVICE_TABLE_LIB_H_
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