--- /dev/null
+/*++\r
+\r
+Copyright (c) 2004, 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
+ NtAutoscan.h\r
+\r
+Abstract:\r
+\r
+Nt Autoscan PPI\r
+\r
+--*/\r
+\r
+#ifndef _NT_PEI_AUTOSCAN_H_\r
+#define _NT_PEI_AUTOSCAN_H_\r
+\r
+#include "Tiano.h"\r
+#include "PeiHob.h"\r
+\r
+#define PEI_NT_AUTOSCAN_PPI_GUID \\r
+ { \\r
+ 0xdce384d, 0x7c, 0x4ba5, 0x94, 0xbd, 0xf, 0x6e, 0xb6, 0x4d, 0x2a, 0xa9 \\r
+ }\r
+\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *PEI_NT_AUTOSCAN) (\r
+ IN UINTN Index,\r
+ OUT EFI_PHYSICAL_ADDRESS * MemoryBase,\r
+ OUT UINT64 *MemorySize\r
+ );\r
+\r
+/*++\r
+\r
+Routine Description:\r
+ This service is called from Index == 0 until it returns EFI_UNSUPPORTED.\r
+ It allows discontiguous memory regions to be supported by the emulator.\r
+ It uses gSystemMemory[] and gSystemMemoryCount that were created by\r
+ parsing the Windows environment variable EFI_MEMORY_SIZE.\r
+ The size comes from the varaible and the address comes from the call to\r
+ WinNtOpenFile. \r
+\r
+Arguments:\r
+ Index - Which memory region to use\r
+ MemoryBase - Return Base address of memory region\r
+ MemorySize - Return size in bytes of the memory region\r
+\r
+Returns:\r
+ EFI_SUCCESS - If memory region was mapped\r
+ EFI_UNSUPPORTED - If Index is not supported\r
+\r
+--*/\r
+typedef struct {\r
+ PEI_NT_AUTOSCAN NtAutoScan;\r
+} PEI_NT_AUTOSCAN_PPI;\r
+\r
+extern EFI_GUID gPeiNtAutoScanPpiGuid;\r
+\r
+#endif\r