EdkNt32Pkg/Include/Ppi/NtAutoscan.h

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   NtAutoscan.h
  15
  16 Abstract:
  17
  18 Nt Autoscan PPI
  19
  20 --*/
  21
  22 #ifndef __NT_PEI_AUTOSCAN_H__
  23 #define __NT_PEI_AUTOSCAN_H__
  24
  25 #include <WinNtDxe.h>
  26
  27 #define PEI_NT_AUTOSCAN_PPI_GUID \
  28   { \
  29     0xdce384d, 0x7c, 0x4ba5, {0x94, 0xbd, 0xf, 0x6e, 0xb6, 0x4d, 0x2a, 0xa9 } \
  30   }
  31
  32 typedef
  33 EFI_STATUS
  34 (EFIAPI *PEI_NT_AUTOSCAN) (
  35   IN  UINTN                 Index,
  36   OUT EFI_PHYSICAL_ADDRESS  * MemoryBase,
  37   OUT UINT64                *MemorySize
  38   );
  39
  40 /*++
  41
  42 Routine Description:
  43   This service is called from Index == 0 until it returns EFI_UNSUPPORTED.
  44   It allows discontiguous memory regions to be supported by the emulator.
  45   It uses gSystemMemory[] and gSystemMemoryCount that were created by
  46   parsing the Windows environment variable EFI_MEMORY_SIZE.
  47   The size comes from the varaible and the address comes from the call to
  48   WinNtOpenFile.
  49
  50 Arguments:
  51   Index      - Which memory region to use
  52   MemoryBase - Return Base address of memory region
  53   MemorySize - Return size in bytes of the memory region
  54
  55 Returns:
  56   EFI_SUCCESS - If memory region was mapped
  57   EFI_UNSUPPORTED - If Index is not supported
  58
  59 --*/
  60 typedef struct {
  61   PEI_NT_AUTOSCAN NtAutoScan;
  62 } PEI_NT_AUTOSCAN_PPI;
  63
  64 extern EFI_GUID gPeiNtAutoScanPpiGuid;
  65
  66 #endif