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- /*++
- Copyright (c) 2009 - 2020, Intel Corporation. All rights reserved.<BR>
-
- 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;
- }
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