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audk/DynamicTablesPkg/Library/Common/SmbiosStringTableLib/SmbiosStringTableLib.inf

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DynamicTablesPkg: Add SMBIOS String table helper library The Section 6.1.3, SMBIOS specification version 3.6.0 describes the handling of test strings in SMBIOS tables. Text strings are added at the end of the formatted portion of the SMBIOS structure and are referenced by index in the SMBIOS structure. Therefore, introduce a SmbiosStringTableLib to simplify the publishing of the string set. SmbiosStringTableLib introduces a concept of string table which records the references to the SMBIOS strings as they are added and returns an string reference which is then assigned to the string field in the formatted portion of the SMBIOS structure. Once all strings are added, the library provides an interface to get the required size for the string set. This allows sufficient memory to be allocated for the SMBIOS table. The library also provides an interface to publish the string set in accordance with the SMBIOS specification. Example: EFI_STATUS BuildSmbiosType17Table () { STRING_TABLE StrTable; UINT8 DevLocatorRef; UINT8 BankLocatorRef; SMBIOS_TABLE_TYPE17 *SmbiosRecord; CHAR8 *StringSet; ... // Initialize string table for 7 strings StringTableInitialize (&StrTable, 7); StringTableAddString (&StrTable, "SIMM 3", &DevLocatorRef); StringTableAddString (&StrTable, "Bank 0", &BankLocatorRef); ... SmbiosRecord = AllocateZeroPool ( sizeof (SMBIOS_TABLE_TYPE17) + StringTableGetStringSetSize (&StrTable) ); ... SmbiosRecord->DeviceLocator = DevLocatorRef; SmbiosRecord->BankLocator = BankLocatorRef; ... // get the string set area StringSet = (CHAR8*)(SmbiosRecord + 1); // publish the string set StringTablePublishStringSet ( &StrTable, StringSet, StringTableGetStringSetSize (&StrTable) ); // free string table StringTableFree (&StrTable); return EFI_SUCCESS; } Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Cc: Alexei Fedorov <Alexei.Fedorov@arm.com> Cc: Pierre Gondois <pierre.gondois@arm.com> Cc: Girish Mahadevan <gmahadevan@nvidia.com> Cc: Jeff Brasen <jbrasen@nvidia.com> Cc: Ashish Singhal <ashishsingha@nvidia.com> Cc: Nick Ramirez <nramirez@nvidia.com> Cc: William Watson <wwatson@nvidia.com> Cc: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>
2022-09-08 19:35:50 +02:00
## @file
# SMBIOS String Table Helper library.
#
# Copyright (c) 2022, Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
##
[Defines]
INF_VERSION = 0x0001001B
BASE_NAME = SmbiosStringTableLib
FILE_GUID = 8C570DD8-531E-473F-85C6-9252746DBAC1
VERSION_STRING = 1.0
MODULE_TYPE = DXE_DRIVER
LIBRARY_CLASS = SmbiosStringTableLib
[Sources]
SmbiosStringTableLib.c
[Packages]
MdePkg/MdePkg.dec
DynamicTablesPkg/DynamicTablesPkg.dec
[LibraryClasses]
BaseLib