1 /** @file
2 BIOS system option string boot time changes.
3 SMBIOS type 12.
4
5 Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
10
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13
14 **/
15
16 #include "MiscSubclassDriver.h"
17
18
19 /**
20 This function makes boot time changes to the contents of the
21 MiscSystemOptionString (Type 12).
22
23 @param RecordData Pointer to copy of RecordData from the Data Table.
24
25 @retval EFI_SUCCESS All parameters were valid.
26 @retval EFI_UNSUPPORTED Unexpected RecordType value.
27 @retval EFI_INVALID_PARAMETER Invalid parameter was found.
28
29 **/
MISC_SMBIOS_TABLE_FUNCTION(SystemOptionString)30 MISC_SMBIOS_TABLE_FUNCTION(SystemOptionString)
31 {
32 CHAR8 *OptionalStrStart;
33 UINTN OptStrLen;
34 EFI_STRING OptionString;
35 EFI_STATUS Status;
36 STRING_REF TokenToGet;
37 EFI_SMBIOS_HANDLE SmbiosHandle;
38 SMBIOS_TABLE_TYPE12 *SmbiosRecord;
39
40 //
41 // First check for invalid parameters.
42 //
43 if (RecordData == NULL) {
44 return EFI_INVALID_PARAMETER;
45 }
46
47 TokenToGet = STRING_TOKEN (STR_MISC_SYSTEM_OPTION_STRING);
48 OptionString = HiiGetPackageString(&gEfiCallerIdGuid, TokenToGet, NULL);
49 OptStrLen = StrLen(OptionString);
50 if (OptStrLen > SMBIOS_STRING_MAX_LENGTH) {
51 return EFI_UNSUPPORTED;
52 }
53
54 //
55 // Two zeros following the last string.
56 //
57 SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1);
58 ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1);
59
60 SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_SYSTEM_CONFIGURATION_OPTIONS;
61 SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE12);
62 //
63 // Make handle chosen by smbios protocol.add automatically.
64 //
65 SmbiosRecord->Hdr.Handle = 0;
66
67 SmbiosRecord->StringCount = 1;
68 OptionalStrStart = (CHAR8*) (SmbiosRecord + 1);
69 UnicodeStrToAsciiStr(OptionString, OptionalStrStart);
70 //
71 // Now we have got the full smbios record, call smbios protocol to add this record.
72 //
73 Status = AddSmbiosRecord (Smbios, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord);
74
75 FreePool(SmbiosRecord);
76 return Status;
77 }
78