Clean up Device Manager module in BdsDxe.

[mirror_edk2.git] / MdeModulePkg / Library / GenericBdsLib / Ipf / ShadowRom.c

/** @file\r
  Shadow all option rom\r
\r
Copyright (c) 2004 - 2008, Intel Corporation. <BR>\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
//@MT:#include "Tiano.h"\r
//@MT:#include "EfiDriverLib.h"\r
\r
//@MT:#include EFI_PROTOCOL_DEFINITION (LegacyBios)\r
\r
#include "InternalBdsLib.h"\r
\r
UINT8 mShadowRomFlag = 0;\r
\r
VOID\r
EFIAPI\r
ShadowAllOptionRom()\r
{\r
  EFI_STATUS                Status;\r
  EFI_LEGACY_BIOS_PROTOCOL  *LegacyBios;\r
  //\r
  // Rom shadow only do once.\r
  //\r
  if (mShadowRomFlag == 0) {\r
    Status = gBS->LocateProtocol (\r
                    &gEfiLegacyBiosProtocolGuid,\r
                    NULL,\r
                    (VOID **) &LegacyBios\r
                    );\r
    if (!EFI_ERROR (Status)) {\r
      LegacyBios->PrepareToBootEfi (LegacyBios, NULL, NULL);\r
    }\r
\r
    mShadowRomFlag = 1;\r
  }\r
\r
  return ;\r
}\r