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 **/ 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
