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/*++
Copyright (c) 2009 - 2014, 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);
UnicodeStrToAsciiStr(OptionString, OptionalStrStart);
//
// 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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