Unix version of EFI emulator

[mirror_edk2.git] / EdkUnixPkg / Library / EdkGenericBdsLib / Ipf / ShadowRom.c

diff --git a/EdkUnixPkg/Library/EdkGenericBdsLib/Ipf/ShadowRom.c b/EdkUnixPkg/Library/EdkGenericBdsLib/Ipf/ShadowRom.c
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+++ b/EdkUnixPkg/Library/EdkGenericBdsLib/Ipf/ShadowRom.c
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+/*++\r
+\r
+Copyright (c) 2006, Intel Corporation                                                         \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
+Module Name:\r
+  \r
+  ShadowRom.c\r
+\r
+Abstract:\r
+\r
+  Shadow all option rom\r
+\r
+Revision History\r
+\r
+--*/\r
+\r
+#include "Tiano.h"\r
+#include "EfiDriverLib.h"\r
+\r
+#include EFI_PROTOCOL_DEFINITION (LegacyBios)\r
+\r
+UINT8 mShadowRomFlag = 0;\r
+\r
+VOID\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
+                    &LegacyBios\r
+                    );\r
+    if (!EFI_ERROR (Status)) {\r
+      LegacyBios->PrepareToBootEfi (LegacyBios, NULL, NULL);\r
+    }\r
+\r
+    mShadowRomFlag = 1;\r
+  }\r
+\r
+  return ;\r
+}\r