5c08e11737
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7354 6f19259b-4bc3-4df7-8a09-765794883524
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/** @file
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Shadow all option rom
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Copyright (c) 2004 - 2008, Intel Corporation. <BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "InternalBdsLib.h"
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UINT8 mShadowRomFlag = 0;
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/**
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Shadow all opton ROM if the it is not done.
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**/
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VOID
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ShadowAllOptionRom(
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VOID
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)
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{
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EFI_STATUS Status;
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EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
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//
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// Rom shadow only do once.
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//
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if (mShadowRomFlag == 0) {
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Status = gBS->LocateProtocol (
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&gEfiLegacyBiosProtocolGuid,
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NULL,
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(VOID **) &LegacyBios
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);
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if (!EFI_ERROR (Status)) {
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LegacyBios->PrepareToBootEfi (LegacyBios, NULL, NULL);
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}
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mShadowRomFlag = 1;
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}
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return ;
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}
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