mirror of https://github.com/acidanthera/audk.git
92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/*++
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Copyright (c) 2009, Intel Corporation. All rights reserved. <BR>
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This software and associated documentation (if any) is furnished
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under a license and may only be used or copied in accordance
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with the terms of the license. Except as permitted by such
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license, no part of this software or documentation may be
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reproduced, stored in a retrieval system, or transmitted in any
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form or by any means without the express written consent of
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Intel Corporation.
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Module Name:
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MiscSystemOptionStringFunction.c
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Abstract:
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BIOS system option string boot time changes.
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SMBIOS type 12.
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--*/
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#include "MiscSubclassDriver.h"
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/**
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This function makes boot time changes to the contents of the
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MiscSystemOptionString (Type 12).
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@param RecordData Pointer to copy of RecordData from the Data Table.
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@retval EFI_SUCCESS All parameters were valid.
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@retval EFI_UNSUPPORTED Unexpected RecordType value.
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@retval EFI_INVALID_PARAMETER Invalid parameter was found.
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**/
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MISC_SMBIOS_TABLE_FUNCTION(SystemOptionString)
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{
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CHAR8 *OptionalStrStart;
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UINTN OptStrLen;
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EFI_STRING OptionString;
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EFI_STATUS Status;
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STRING_REF TokenToGet;
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EFI_SMBIOS_HANDLE SmbiosHandle;
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SMBIOS_TABLE_TYPE12 *SmbiosRecord;
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//
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// First check for invalid parameters.
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//
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if (RecordData == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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TokenToGet = STRING_TOKEN (STR_MISC_SYSTEM_OPTION_STRING);
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OptionString = HiiGetPackageString(&gEfiCallerIdGuid, TokenToGet, NULL);
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OptStrLen = StrLen(OptionString);
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if (OptStrLen > SMBIOS_STRING_MAX_LENGTH) {
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return EFI_UNSUPPORTED;
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}
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//
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// Two zeros following the last string.
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//
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SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1);
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ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1);
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SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_SYSTEM_CONFIGURATION_OPTIONS;
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SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE12);
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//
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// Make handle chosen by smbios protocol.add automatically.
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//
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SmbiosRecord->Hdr.Handle = 0;
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SmbiosRecord->StringCount = 1;
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OptionalStrStart = (CHAR8*) (SmbiosRecord + 1);
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UnicodeStrToAsciiStr(OptionString, OptionalStrStart);
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//
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// Now we have got the full smbios record, call smbios protocol to add this record.
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//
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SmbiosHandle = 0;
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Status = Smbios-> Add(
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Smbios,
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NULL,
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&SmbiosHandle,
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(EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord
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);
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FreePool(SmbiosRecord);
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return Status;
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}
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