ArmPkg/Library/BdsLib/BdsFilePathMem.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011, ARM Limited. All rights reserved.
   4 *
   5 *  This program and the accompanying materials
   6 *  are licensed and made available under the terms and conditions of the BSD License
   7 *  which accompanies this distribution.  The full text of the license may be found at
   8 *  http://opensource.org/licenses/bsd-license.php
   9 *
  10 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 *
  13 **/
  14
  15 #include "BdsInternal.h"
  16
  17
  18 EFI_STATUS BdsLoadFileFromMemMap (
  19     IN  EFI_HANDLE                  Handle,
  20     IN  EFI_DEVICE_PATH_PROTOCOL    *DevicePath,
  21     OUT BDS_FILE                    *File
  22 ) {
  23     EFI_DEVICE_PATH_PROTOCOL            *LastDevicePath;
  24
  25     if ((File == NULL) || (DevicePath == NULL) || (IsDevicePathEnd (DevicePath))) {
  26         return EFI_INVALID_PARAMETER;
  27     }
  28
  29     // Check if the last node of the device Path is a Memory Map Device Node
  30     LastDevicePath = DevicePath;
  31     DevicePath = NextDevicePathNode(DevicePath);
  32     while (!IsDevicePathEnd (DevicePath)) {
  33         LastDevicePath = DevicePath;
  34         DevicePath = NextDevicePathNode(DevicePath);
  35     }
  36     if ((LastDevicePath->Type != HARDWARE_DEVICE_PATH) || (LastDevicePath->SubType != HW_MEMMAP_DP)) {
  37         return EFI_UNSUPPORTED;
  38     }
  39
  40     File->Type = BDS_FILETYPE_MEM;
  41     File->File.Mem.MemoryType = ((MEMMAP_DEVICE_PATH*)LastDevicePath)->MemoryType;
  42     File->File.Mem.StartingAddress = ((MEMMAP_DEVICE_PATH*)LastDevicePath)->StartingAddress;
  43     File->File.Mem.EndingAddress = ((MEMMAP_DEVICE_PATH*)LastDevicePath)->EndingAddress;
  44
  45     return EFI_SUCCESS;
  46 }
  47
  48 EFI_STATUS BdsCopyRawFileToRuntimeMemoryMemMap(
  49     IN  BDS_MEM_FILE        *MemFile,
  50     OUT VOID                **FileImage,
  51     OUT UINTN               *FileSize
  52 ) {
  53     UINTN           Size;
  54     VOID*           Image;
  55
  56     Size = MemFile->EndingAddress - MemFile->StartingAddress;
  57
  58     if ((Size == 0) || (FileImage == NULL)) {
  59         return EFI_INVALID_PARAMETER;
  60     }
  61     if (FileSize != NULL) {
  62         *FileSize = Size;
  63     }
  64
  65     Image = AllocateRuntimePool(Size);
  66     if (Image == NULL) {
  67         return EFI_OUT_OF_RESOURCES;
  68     }
  69
  70     *FileImage = CopyMem(Image,(CONST VOID*)(UINTN)MemFile->StartingAddress,Size);
  71
  72     return EFI_SUCCESS;
  73 }