MdeModulePkg/Universal/DevicePathDxe/DevicePath.c

   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   DevicePathDriver.c
  15
  16 Abstract:
  17
  18   Device Path Driver to produce DevPathUtilities Protocol, DevPathFromText Protocol
  19   and DevPathToText Protocol.
  20
  21 --*/
  22
  23 #include "DevicePath.h"
  24
  25 EFI_HANDLE  mDevicePathHandle = NULL;
  26
  27 GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePathUtilities = {
  28   GetDevicePathSizeProtocolInterface,
  29   DuplicateDevicePathProtocolInterface,
  30   AppendDevicePathProtocolInterface,
  31   AppendDeviceNodeProtocolInterface,
  32   AppendDevicePathInstanceProtocolInterface,
  33   GetNextDevicePathInstanceProtocolInterface,
  34   IsDevicePathMultiInstanceProtocolInterface,
  35   CreateDeviceNodeProtocolInterface
  36 };
  37
  38 GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_TO_TEXT_PROTOCOL   mDevicePathToText = {
  39   ConvertDeviceNodeToText,
  40   ConvertDevicePathToText
  41 };
  42
  43 GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL mDevicePathFromText = {
  44   ConvertTextToDeviceNode,
  45   ConvertTextToDevicePath
  46 };
  47
  48 GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid = DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL;
  49 GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingSASGuid             = DEVICE_PATH_MESSAGING_SAS;
  50
  51 EFI_STATUS
  52 EFIAPI
  53 DevicePathEntryPoint (
  54   IN EFI_HANDLE           ImageHandle,
  55   IN EFI_SYSTEM_TABLE     *SystemTable
  56   )
  57 /*++
  58
  59   Routine Description:
  60     Entry point for EFI drivers.
  61
  62   Arguments:
  63    ImageHandle - EFI_HANDLE
  64    SystemTable - EFI_SYSTEM_TABLE
  65
  66   Returns:
  67     EFI_SUCCESS
  68     others
  69
  70 --*/
  71 {
  72   EFI_STATUS  Status;
  73
  74   Status = EFI_UNSUPPORTED;
  75   if (FeaturePcdGet (PcdDevicePathSupportDevicePathToText)) {
  76     if (FeaturePcdGet (PcdDevicePathSupportDevicePathFromText)) {
  77       Status = gBS->InstallMultipleProtocolInterfaces (
  78                       &mDevicePathHandle,
  79                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
  80                       &gEfiDevicePathToTextProtocolGuid,    &mDevicePathToText,
  81                       &gEfiDevicePathFromTextProtocolGuid,  &mDevicePathFromText,
  82                       NULL
  83                       );
  84     } else {
  85       Status = gBS->InstallMultipleProtocolInterfaces (
  86                       &mDevicePathHandle,
  87                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
  88                       &gEfiDevicePathToTextProtocolGuid,    &mDevicePathToText,
  89                       NULL
  90                       );
  91     }
  92   } else {
  93     if (FeaturePcdGet (PcdDevicePathSupportDevicePathFromText)) {
  94       Status = gBS->InstallMultipleProtocolInterfaces (
  95                       &mDevicePathHandle,
  96                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
  97                       &gEfiDevicePathFromTextProtocolGuid,  &mDevicePathFromText,
  98                       NULL
  99                       );
 100     } else {
 101       Status = gBS->InstallMultipleProtocolInterfaces (
 102                       &mDevicePathHandle,
 103                       &gEfiDevicePathUtilitiesProtocolGuid, &mDevicePathUtilities,
 104                       NULL
 105                       );
 106     }
 107   }
 108   return Status;
 109 }