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5e973c96 1/** @file\r
1fdd39d3 2 BIOS system option string boot time changes.\r
3 SMBIOS type 12.\r
5e973c96 4 \r
7ee85aa2 5Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
9d2eedba 6SPDX-License-Identifier: BSD-2-Clause-Patent\r
1fdd39d3 7\r
5e973c96 8**/\r
1fdd39d3 9\r
10#include "MiscSubclassDriver.h"\r
11\r
12\r
13/**\r
14 This function makes boot time changes to the contents of the\r
15 MiscSystemOptionString (Type 12).\r
16\r
17 @param RecordData Pointer to copy of RecordData from the Data Table. \r
18\r
19 @retval EFI_SUCCESS All parameters were valid.\r
20 @retval EFI_UNSUPPORTED Unexpected RecordType value.\r
21 @retval EFI_INVALID_PARAMETER Invalid parameter was found.\r
22\r
23**/\r
24MISC_SMBIOS_TABLE_FUNCTION(SystemOptionString)\r
25{\r
26 CHAR8 *OptionalStrStart;\r
27 UINTN OptStrLen;\r
28 EFI_STRING OptionString;\r
29 EFI_STATUS Status;\r
30 STRING_REF TokenToGet;\r
31 EFI_SMBIOS_HANDLE SmbiosHandle;\r
32 SMBIOS_TABLE_TYPE12 *SmbiosRecord;\r
33\r
34 //\r
35 // First check for invalid parameters.\r
36 //\r
37 if (RecordData == NULL) {\r
38 return EFI_INVALID_PARAMETER;\r
39 }\r
40\r
41 TokenToGet = STRING_TOKEN (STR_MISC_SYSTEM_OPTION_STRING);\r
42 OptionString = HiiGetPackageString(&gEfiCallerIdGuid, TokenToGet, NULL);\r
43 OptStrLen = StrLen(OptionString);\r
44 if (OptStrLen > SMBIOS_STRING_MAX_LENGTH) {\r
45 return EFI_UNSUPPORTED;\r
46 }\r
47 \r
48 //\r
49 // Two zeros following the last string.\r
50 //\r
51 SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1);\r
52 ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE12) + OptStrLen + 1 + 1);\r
53\r
54 SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_SYSTEM_CONFIGURATION_OPTIONS;\r
55 SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE12);\r
56 //\r
57 // Make handle chosen by smbios protocol.add automatically.\r
58 //\r
59 SmbiosRecord->Hdr.Handle = 0; \r
60\r
61 SmbiosRecord->StringCount = 1;\r
62 OptionalStrStart = (CHAR8*) (SmbiosRecord + 1);\r
63 UnicodeStrToAsciiStr(OptionString, OptionalStrStart);\r
64 //\r
65 // Now we have got the full smbios record, call smbios protocol to add this record.\r
66 //\r
7ee85aa2 67 Status = AddSmbiosRecord (Smbios, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord);\r
1fdd39d3 68\r
69 FreePool(SmbiosRecord);\r
70 return Status;\r
71}\r