/**
  SMBIOS type 0.

  Copyright (c) 1999 - 2016 Intel Corporation.  All rights reserved.
  This software and associated documentation (if any) is furnished
  under a license and may only be used or copied in accordance
  with the terms of the license. Except as permitted by such
  license, no part of this software or documentation may be
  reproduced, stored in a retrieval system, or transmitted in any
  form or by any means without the express written consent of
  Intel Corporation.

**/


#include "SmbiosBasic.h"

/**
  This function makes boot time changes to the contents of the
  BiosVendor (Type 0).

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

**/
EFI_STATUS
EFIAPI
BiosVendorFunction(
  IN  EFI_SMBIOS_PROTOCOL   *Smbios
  )
{
  EFI_STATUS            Status; 
  CHAR8                 *VendorStr;
  UINTN                 VendorStrLen;
  CHAR8                 *VersionStr;
  UINTN                 VerStrLen;
  CHAR8                 *DateStr;
  UINTN                 DateStrLen;
  SMBIOS_TABLE_TYPE0    *SmbiosRecord;
  SMBIOS_TABLE_TYPE0    *PcdSmbiosRecord;
  EFI_SMBIOS_HANDLE     SmbiosHandle;
  UINTN                 StringOffset;

  PcdSmbiosRecord = PcdGetPtr (PcdSmbiosType0BiosInformation);

  VendorStr = PcdGetPtr (PcdSmbiosType0StringVendor);
  VendorStrLen = AsciiStrLen (VendorStr);
  ASSERT (VendorStrLen <= SMBIOS_STRING_MAX_LENGTH);

  VersionStr = PcdGetPtr (PcdSmbiosType0StringBiosVersion);
  VerStrLen = AsciiStrLen (VersionStr);
  ASSERT (VerStrLen <= SMBIOS_STRING_MAX_LENGTH);

  DateStr = PcdGetPtr (PcdSmbiosType0StringBiosReleaseDate);
  DateStrLen = AsciiStrLen (DateStr);
  ASSERT (DateStrLen <= SMBIOS_STRING_MAX_LENGTH);

  //
  // Two zeros following the last string.
  //
  SmbiosRecord = AllocateZeroPool (sizeof (SMBIOS_TABLE_TYPE0) + VendorStrLen + 1 + VerStrLen + 1 + DateStrLen + 1 + 1);
  if (SmbiosRecord == NULL) {
    ASSERT_EFI_ERROR (EFI_OUT_OF_RESOURCES);
    return EFI_OUT_OF_RESOURCES;
  }

  CopyMem (SmbiosRecord, PcdSmbiosRecord, sizeof(SMBIOS_TABLE_TYPE0));

  SmbiosRecord->Hdr.Type = SMBIOS_TYPE_BIOS_INFORMATION;
  SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE0);
  SmbiosRecord->Hdr.Handle = 0;

  StringOffset = SmbiosRecord->Hdr.Length;
  CopyMem ((UINT8 *)SmbiosRecord + StringOffset, VendorStr, VendorStrLen);
  StringOffset += VendorStrLen + 1;
  CopyMem ((UINT8 *)SmbiosRecord + StringOffset, VersionStr, VerStrLen);
  StringOffset += VerStrLen + 1;
  CopyMem ((UINT8 *)SmbiosRecord + StringOffset, DateStr, DateStrLen);

  //
  // 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;
}