/*++ Copyright (c) 2009 - 2020, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent Module Name: MiscSystemOptionStringFunction.c Abstract: BIOS system option string boot time changes. SMBIOS type 12. --*/ #include "CommonHeader.h" #include "MiscSubclassDriver.h" /** This function makes boot time changes to the contents of the MiscSystemOptionString (Type 12). @param RecordData Pointer to copy of RecordData from the Data Table. @retval EFI_SUCCESS All parameters were valid. @retval EFI_UNSUPPORTED Unexpected RecordType value. @retval EFI_INVALID_PARAMETER Invalid parameter was found. **/ MISC_SMBIOS_TABLE_FUNCTION(SystemOptionString) { CHAR8 *OptionalStrStart; UINTN OptStrLen; EFI_STRING OptionString; EFI_STATUS Status; STRING_REF TokenToGet; EFI_SMBIOS_HANDLE SmbiosHandle; SMBIOS_TABLE_TYPE12 *SmbiosRecord; // // First check for invalid parameters. // if (RecordData == NULL) { return EFI_INVALID_PARAMETER; } TokenToGet = STRING_TOKEN (STR_MISC_SYSTEM_OPTION_EN_US); OptionString = SmbiosMiscGetString (TokenToGet); OptStrLen = StrLen(OptionString); if (OptStrLen > SMBIOS_STRING_MAX_LENGTH) { return EFI_UNSUPPORTED; } // // Two zeros following the last string. // SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1); ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1); SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_SYSTEM_CONFIGURATION_OPTIONS; SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE12); // // Make handle chosen by smbios protocol.add automatically. // SmbiosRecord->Hdr.Handle = 0; SmbiosRecord->StringCount = 1; OptionalStrStart = (CHAR8*) (SmbiosRecord + 1); UnicodeStrToAsciiStrS (OptionString, OptionalStrStart, OptStrLen + 1 + 1); // // Now we have got the full smbios record, call smbios protocol to add this record. // SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED; Status = Smbios-> Add( Smbios, NULL, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord ); FreePool(SmbiosRecord); return Status; }