InOsEmuPkg/MiscSubClassPlatformDxe/MiscSystemOptionStringFunction.c

   1 /** @file
   2   BIOS system option string boot time changes.
   3   SMBIOS type 12.
   4
   5   Copyright (c) 2009, 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   SmbiosHandle = 0;
  74   Status = Smbios-> Add(
  75                       Smbios,
  76                       NULL,
  77                       &SmbiosHandle,
  78                       (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord
  79                       );
  80
  81   FreePool(SmbiosRecord);
  82   return Status;
  83 }