Nt32Pkg/MiscSubClassPlatformDxe/MiscSystemOptionStringFunction.c

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