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alder_lake_bios/Intel/AlderLake/AlderLakePlatSamplePkg/Features/Smbios/SmbiosTpmDeviceInfo/SmbiosTpmDeviceInfo.c

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/**@file
@copyright
INTEL CONFIDENTIAL
Copyright 2019 Intel Corporation.
The source code contained or described herein and all documents related to the
source code ("Material") are owned by Intel Corporation or its suppliers or
licensors. Title to the Material remains with Intel Corporation or its suppliers
and licensors. The Material may contain trade secrets and proprietary and
confidential information of Intel Corporation and its suppliers and licensors,
and is protected by worldwide copyright and trade secret laws and treaty
provisions. No part of the Material may be used, copied, reproduced, modified,
published, uploaded, posted, transmitted, distributed, or disclosed in any way
without Intel's prior express written permission.
No license under any patent, copyright, trade secret or other intellectual
property right is granted to or conferred upon you by disclosure or delivery
of the Materials, either expressly, by implication, inducement, estoppel or
otherwise. Any license under such intellectual property rights must be
express and approved by Intel in writing.
Unless otherwise agreed by Intel in writing, you may not remove or alter
this notice or any other notice embedded in Materials by Intel or
Intel's suppliers or licensors in any way.
This file contains a 'Sample Driver' and is licensed as such under the terms
of your license agreement with Intel or your vendor. This file may be modified
by the user, subject to the additional terms of the license agreement.
@par Specification Reference:
**/
#include <SmbiosTpmDeviceInfo.h>
///
/// TPM Device (Type 43) data
///
GLOBAL_REMOVE_IF_UNREFERENCED SMBIOS_TABLE_TYPE43 SmbiosTableType43Data = {
{ EFI_SMBIOS_TYPE_TPM_DEVICE, sizeof (SMBIOS_TABLE_TYPE43), 0 },
{
TO_BE_FILLED, ///< VendorID0
TO_BE_FILLED, ///< VendorID1
TO_BE_FILLED, ///< VendorID2
TO_BE_FILLED ///< VendorID3
},
TO_BE_FILLED, ///< MajorSpecVersion
TO_BE_FILLED, ///< MinorSpecVersion
TO_BE_FILLED, ///< FirmwareVersion1
TO_BE_FILLED, ///< FirmwareVersion2
TO_BE_FILLED, ///< Description
TO_BE_FILLED, ///< Characteristics
TO_BE_FILLED, ///< OEM Defined
};
GLOBAL_REMOVE_IF_UNREFERENCED SMBIOS_TYPE43_STRING_ARRAY SmbiosTableType43Strings = {
TO_BE_FILLED_STRING ///< Description
};
/**
Add an SMBIOS table entry using EFI_SMBIOS_PROTOCOL.
Create the full table record using the formatted section plus each non-null string, plus the terminating (double) null.
@param[in] Entry The data for the fixed portion of the SMBIOS entry.
The format of the data is determined by EFI_SMBIOS_TABLE_HEADER.
Type. The size of the formatted area is defined by
EFI_SMBIOS_TABLE_HEADER. Length and either followed by a
double-null (0x0000) or a set of null terminated strings and a null.
@param[in] TableStrings Set of string pointers to append onto the full record.
If TableStrings is null, no strings are appended. Null strings
are skipped.
@param[in] NumberOfStrings Number of TableStrings to append, null strings are skipped.
@param[in] SmbiosProtocol Instance of Smbios Protocol
@param[out] SmbiosHandle A unique handle will be assigned to the SMBIOS record.
@retval EFI_SUCCESS Table was added.
@retval EFI_OUT_OF_RESOURCES Table was not added due to lack of system resources.
@retval EFI_INVALID_PARAMETER The pointer to the input SMBIOS entry is NULL.
**/
EFI_STATUS
AddSmbiosEntry (
IN EFI_SMBIOS_TABLE_HEADER *Entry,
IN CHAR8 **TableStrings,
IN UINT8 NumberOfStrings,
IN EFI_SMBIOS_PROTOCOL *SmbiosProtocol
)
{
EFI_STATUS Status;
EFI_SMBIOS_TABLE_HEADER *Record;
CHAR8 *StringPtr;
UINTN Size;
UINTN i;
EFI_SMBIOS_HANDLE SmbiosHandle;
if (Entry == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Calculate the total size of the full record
//
Size = Entry->Length;
//
// Add the size of each non-null string
//
if (TableStrings != NULL) {
for (i = 0; i < NumberOfStrings; i++) {
if (TableStrings[i] != NULL) {
Size += AsciiStrSize (TableStrings[i]);
}
}
}
//
// Add the size of the terminating double null
// If there were any strings added, just add the second null
//
if (Size == Entry->Length) {
Size += 2;
} else {
Size += 1;
}
//
// Initialize the full record
//
Record = (EFI_SMBIOS_TABLE_HEADER *) AllocateZeroPool (Size);
if (Record == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CopyMem (Record, Entry, Entry->Length);
//
// Copy the strings to the end of the record
//
StringPtr = ((CHAR8 *) Record) + Entry->Length;
if (TableStrings != NULL) {
for (i = 0; i < NumberOfStrings; i++) {
if (TableStrings[i] != NULL) {
AsciiStrCpyS (StringPtr, Size - Entry->Length, TableStrings[i]);
StringPtr += AsciiStrSize (TableStrings[i]);
Size -= AsciiStrSize (TableStrings[i]);
}
}
}
SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
Status = SmbiosProtocol->Add (SmbiosProtocol, NULL, &SmbiosHandle, Record);
FreePool (Record);
return Status;
}
/**
Installs the SMBIOS TPM Device Information type 43
@retval EFI_UNSUPPORTED - Could not locate SMBIOS protocol
@retval EFI_OUT_OF_RESOURCES - Failed to allocate memory for SMBIOS TPM Device Information type.
@retval EFI_SUCCESS - Successfully installed SMBIOS TPM Device Information type.
**/
EFI_STATUS
EFIAPI
AddSmbiosTpmDeviceTable (
VOID
)
{
EFI_STATUS Status;
UINT8 TpmDeviceType;
CHAR8 *StringBuffer;
UINTN StringBufferLength;
UINT32 ManufacturerID;
UINT32 TempManufacturerIDValue;
UINT32 FirmwareVersion1;
UINT32 FirmwareVersion2;
EFI_SMBIOS_PROTOCOL *SmbiosProtocol;
DEBUG ((DEBUG_INFO, "[SMBIOS] AddSmbiosTpmDeviceTable ()\n"));
Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **) &SmbiosProtocol);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Error locating gEfiSmbiosProtocolGuid. Status = %r\n", Status));
return Status;
}
//
// Check for TPM presence and type.
//
TpmDeviceType = TpmDeviceNone;
if (CompareGuid (PcdGetPtr (PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm20DtpmGuid)) {
TpmDeviceType = TpmDevice20TPM;
} else if (CompareGuid (PcdGetPtr (PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm12Guid)) {
TpmDeviceType = TpmDevice12TPM;
}
//
// TPM Description string buffer allocation
//
StringBufferLength = SMBIOS_STRING_MAX_LENGTH;
StringBuffer = AllocateZeroPool (StringBufferLength * sizeof (CHAR8));
if (StringBuffer == NULL) {
Status = EFI_OUT_OF_RESOURCES;
return Status;
}
//
// TPM Type specific fields
//
switch (TpmDeviceType) {
case TpmDevice12TPM:
//
// Spec version for TPM 1.2 devices.
//
SmbiosTableType43Data.MajorSpecVersion = 1;
SmbiosTableType43Data.MinorSpecVersion = 2;
//
// Format TPM details into Description string
//
AsciiSPrint (
StringBuffer,
StringBufferLength,
"TPM %d.%d\n",
SmbiosTableType43Data.MajorSpecVersion,
SmbiosTableType43Data.MinorSpecVersion
);
SmbiosTableType43Data.Description = STRING_1;
SmbiosTableType43Strings.Description = StringBuffer;
//
// TPM Characteristics
// Set bit 2 (TPM Characteristics are not supported)
//
SmbiosTableType43Data.Characteristics = BIT2;
break;
case TpmDevice20TPM:
//
// ManufacturerID defined in TCG Vendor ID Registry.
//
Status = Tpm2GetCapabilityManufactureID (&ManufacturerID);
SmbiosTableType43Data.VendorID[0] = (ManufacturerID >> 0) & 0xFF;
SmbiosTableType43Data.VendorID[1] = (ManufacturerID >> 8) & 0xFF;
SmbiosTableType43Data.VendorID[2] = (ManufacturerID >> 16) & 0xFF;
//
// May be tailed with 0x00 (ASCII_NULL_CHAR) or 0x20 (ASCII_SPACE_CHAR)
//
TempManufacturerIDValue = (ManufacturerID >> 24);
if ((TempManufacturerIDValue) == ASCII_NULL_CHAR || ((TempManufacturerIDValue) == ASCII_SPACE_CHAR)) {
// HID containing PNP ID "NNN####"
SmbiosTableType43Data.VendorID[3] = ASCII_NULL_CHAR;
} else {
// HID containing ACP ID "NNNN####"
SmbiosTableType43Data.VendorID[3] = (TempManufacturerIDValue) & 0xFF;
}
//
// Spec version for TPM 2.0 devices.
//
SmbiosTableType43Data.MajorSpecVersion = 2;
SmbiosTableType43Data.MinorSpecVersion = 0;
//
// Firmware Version
//
Status = Tpm2GetCapabilityFirmwareVersion (&FirmwareVersion1, &FirmwareVersion2);
SmbiosTableType43Data.FirmwareVersion1 = FirmwareVersion1;
SmbiosTableType43Data.FirmwareVersion2 = FirmwareVersion2;
//
// Format TPM details into Description string
//
AsciiSPrint (
StringBuffer,
StringBufferLength,
"TPM %d.%d, ManufacturerID: %c%c%c%c, Firmware Version: 0x%08x.0x%08x",
SmbiosTableType43Data.MajorSpecVersion,
SmbiosTableType43Data.MinorSpecVersion,
SmbiosTableType43Data.VendorID[0],
SmbiosTableType43Data.VendorID[1],
SmbiosTableType43Data.VendorID[2],
SmbiosTableType43Data.VendorID[3],
SmbiosTableType43Data.FirmwareVersion1,
SmbiosTableType43Data.FirmwareVersion2
);
SmbiosTableType43Data.Description = STRING_1;
SmbiosTableType43Strings.Description = StringBuffer;
//
// TPM Characteristics
// Set bit 2 (TPM Characteristics are not supported)
//
SmbiosTableType43Data.Characteristics = BIT2;
break;
default:
DEBUG ((DEBUG_ERROR, "[SMBIOS] No TPM present. Skipping installation of Smbios TPM Device (record 43) table.\n"));
Status = EFI_UNSUPPORTED;
break;
}
if (Status != EFI_SUCCESS) {
return Status;
}
//
// Generate SMBIOS TPM Device Record (Type 43)
//
Status = AddSmbiosEntry (
(EFI_SMBIOS_TABLE_HEADER *) &SmbiosTableType43Data,
(CHAR8 **) &SmbiosTableType43Strings,
SMBIOS_TYPE43_NUMBER_OF_STRINGS,
SmbiosProtocol);
FreePool (StringBuffer);
return Status;
}
/**
Standard EFI driver point. This driver creates the SMBIOS TPM device information (Type 43) record
for the detected device.
@param[in] ImageHandle Handle for the image of this driver
@param[in] SystemTable Pointer to the EFI System Table
@retval EFI_SUCCESS The data was successfully stored.
**/
EFI_STATUS
EFIAPI
SmbiosTpmDeviceInfoEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
DEBUG ((DEBUG_INFO, "SmbiosTpmDeviceInfoEntryPoint(): Entry\n"));
//
// Add Smbios type 43 table.
//
Status = AddSmbiosTpmDeviceTable ();
DEBUG ((DEBUG_INFO, "SmbiosTpmDeviceInfoEntryPoint(): Exit - Status = %r\n", Status));
return Status;
}
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