ArmPkg/Library/BdsLib/BdsAppLoader.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 EFI_STATUS
  18 BdsLoadPeCoff (
  19  IN  BDS_FILE     *EfiAppFile
  20  )
  21 {
  22     EFI_STATUS                          Status;
  23     EFI_HANDLE                          ImageHandle;
  24     MEDIA_FW_VOL_FILEPATH_DEVICE_PATH   NewNode;
  25     EFI_DEVICE_PATH_PROTOCOL            *DevicePath;
  26
  27     // Only support loading from FV right now
  28     ASSERT(EfiAppFile->Type == BDS_FILETYPE_FV);
  29
  30     // Generate the Device Path for the file
  31     DevicePath = DuplicateDevicePath(EfiAppFile->DevicePath);
  32     EfiInitializeFwVolDevicepathNode (&NewNode, &(EfiAppFile->File.Fv.Guid));
  33     DevicePath = AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL *)&NewNode);
  34
  35     Status = gBS->LoadImage (TRUE, gImageHandle, DevicePath, NULL, 0, &ImageHandle);
  36     if (!EFI_ERROR (Status)) {
  37         Status = gBS->StartImage (ImageHandle, NULL, NULL);
  38     }
  39
  40     return Status;
  41 }
  42
  43 EFI_STATUS BdsLoadApplicationFromPath(
  44     IN  CHAR16* EfiAppPath
  45 ) {
  46     EFI_STATUS Status;
  47     BDS_FILE   EfiAppFile;
  48
  49     // Need to connect every drivers to ensure no dependencies are missing for the application
  50     Status = BdsConnectAllDrivers();
  51     if (EFI_ERROR(Status)) {
  52         DEBUG ((EFI_D_ERROR, "FAIL to connect all drivers\n"));
  53         return Status;
  54     }
  55
  56     // Locate the application from a device path
  57     Status = BdsLoadFilePath(EfiAppPath, &EfiAppFile);
  58     if (EFI_ERROR(Status)) {
  59         DEBUG ((EFI_D_ERROR, "ERROR: Do not find EFI application %s\n",EfiAppPath));
  60         return Status;
  61     }
  62
  63     // Start the application
  64     Status = BdsLoadPeCoff(&EfiAppFile);
  65
  66     return Status;
  67 }
  68
  69 EFI_STATUS BdsLoadApplication(
  70     IN  CHAR16* EfiApp
  71 ) {
  72     EFI_STATUS                      Status;
  73     UINTN                           NoHandles, HandleIndex;
  74     EFI_HANDLE                      *Handles;
  75     BDS_FILE                        EfiAppFile;
  76
  77     // Need to connect every drivers to ensure no dependencies are missing for the application
  78     Status = BdsConnectAllDrivers();
  79     if (EFI_ERROR(Status)) {
  80         DEBUG ((EFI_D_ERROR, "FAIL to connect all drivers\n"));
  81         return Status;
  82     }
  83
  84     // Search the application in any Firmware Volume
  85     Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiFirmwareVolume2ProtocolGuid, NULL, &NoHandles, &Handles);
  86     if (EFI_ERROR (Status) || (NoHandles == 0)) {
  87         DEBUG ((EFI_D_ERROR, "FAIL to find Firmware Volume\n"));
  88         return Status;
  89     }
  90
  91     // Search in all Firmware Volume for the EFI Application
  92     for (HandleIndex = 0; HandleIndex < NoHandles; HandleIndex++) {
  93         Status = BdsLoadFileFromFirmwareVolume(Handles[HandleIndex],EfiApp,EFI_FV_FILETYPE_APPLICATION,&EfiAppFile);
  94         if (!EFI_ERROR (Status)) {
  95             // Start the application
  96             Status = BdsLoadPeCoff(&EfiAppFile);
  97             return Status;
  98         }
  99     }
 100
 101     return Status;
 102 }