EdkModulePkg/Core/Dxe/FwVol/FwVolAttrib.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   FwVolAttrib.c
  15
  16 Abstract:
  17
  18   Implements get/set firmware volume attributes
  19
  20 --*/
  21
  22 #include <DxeMain.h>
  23
  24 EFI_STATUS
  25 EFIAPI
  26 FvGetVolumeAttributes (
  27   IN  EFI_FIRMWARE_VOLUME_PROTOCOL  *This,
  28   OUT EFI_FV_ATTRIBUTES             *Attributes
  29   )
  30 /*++
  31
  32 Routine Description:
  33     Retrieves attributes, insures positive polarity of attribute bits, returns
  34     resulting attributes in output parameter
  35
  36 Arguments:
  37     This        - Calling context
  38     Attributes  - output buffer which contains attributes
  39
  40 Returns:
  41     EFI_SUCCESS         - Successfully got volume attributes
  42
  43 --*/
  44 {
  45   EFI_STATUS                                Status;
  46   FV_DEVICE                                 *FvDevice;
  47   EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL        *Fvb;
  48   EFI_FVB_ATTRIBUTES                        FvbAttributes;
  49
  50   FvDevice = FV_DEVICE_FROM_THIS (This);
  51   Fvb = FvDevice->Fvb;
  52
  53   if (FvDevice->CachedFv == NULL) {
  54     Status = FvCheck (FvDevice);
  55     if (EFI_ERROR (Status)) {
  56       return Status;
  57     }
  58   }
  59
  60   //
  61   // First get the Firmware Volume Block Attributes
  62   //
  63   Status = Fvb->GetVolumeAttributes (Fvb, &FvbAttributes);
  64
  65   //
  66   // Mask out Fvb bits that are not defined in FV
  67   //
  68   FvbAttributes &= 0xfffff0ff;
  69
  70   *Attributes = (EFI_FV_ATTRIBUTES)FvbAttributes;
  71
  72   return Status;
  73 }
  74
  75
  76 EFI_STATUS
  77 EFIAPI
  78 FvSetVolumeAttributes (
  79   IN EFI_FIRMWARE_VOLUME_PROTOCOL   *This,
  80   IN OUT EFI_FV_ATTRIBUTES          *Attributes
  81   )
  82 /*++
  83
  84 Routine Description:
  85     Sets current attributes for volume
  86
  87 Arguments:
  88     This       - Calling context
  89     Attributes - At input, contains attributes to be set.  At output contains
  90       new value of FV
  91
  92 Returns:
  93     EFI_UNSUPPORTED   - Could not be set.
  94
  95 --*/
  96 {
  97   return EFI_UNSUPPORTED;
  98 }
  99