audk/Nt32Pkg/MiscSubClassPlatformDxe/MiscSystemLanguageStringFunction.c

/** @file

Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "MiscSubclassDriver.h"
/**
  This function makes boot time changes to the contents of the
  MiscOemString (Type 11).

  @param  RecordData                 Pointer to copy of RecordData from the Data Table.  

  @retval EFI_SUCCESS                All parameters were valid.
  @retval EFI_UNSUPPORTED            Unexpected RecordType value.
  @retval EFI_INVALID_PARAMETER      Invalid parameter was found.

**/
MISC_SMBIOS_TABLE_FUNCTION(SystemLanguageString)
{
  EFI_STATUS               Status;
  EFI_SMBIOS_HANDLE        SmbiosHandle;
  SMBIOS_TABLE_TYPE13      *SmbiosRecord;
  UINTN                    StrLeng;
  CHAR8                    *OptionalStrStart;
  EFI_STRING               Str;
  STRING_REF               TokenToGet;
  

  //
  // First check for invalid parameters.
  //
  if (RecordData == NULL) {
    return EFI_INVALID_PARAMETER;
  }

  TokenToGet = STRING_TOKEN (STR_MISC_SYSTEM_LANGUAGE_STRING);
  Str = HiiGetPackageString(&gEfiCallerIdGuid, TokenToGet, NULL);
  StrLeng = StrLen(Str);
  if (StrLeng > SMBIOS_STRING_MAX_LENGTH) {
    return EFI_UNSUPPORTED;
  }

  //
  // Two zeros following the last string.
  //
  SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE13) + StrLeng + 1 + 1);
  ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE13) + StrLeng + 1 + 1);

  SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_BIOS_LANGUAGE_INFORMATION;
  SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE13);
  //
  // Make handle chosen by smbios protocol.add automatically.
  // 
  SmbiosRecord->Hdr.Handle    = 0;
  SmbiosRecord->InstallableLanguages = 1;
  SmbiosRecord->Flags   = 1;
  SmbiosRecord->CurrentLanguages = 1;
  OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);
  UnicodeStrToAsciiStr(Str, OptionalStrStart);
  

  //
  // Now we have got the full smbios record, call smbios protocol to add this record.
  //
  Status = AddSmbiosRecord (Smbios, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord);

  FreePool(SmbiosRecord);
  return Status;
}