diff options
Diffstat (limited to 'IntelFrameworkModulePkg/Universal/FirmwareVolume/FwVolDxe/FwVolAttrib.c')
| -rw-r--r-- | IntelFrameworkModulePkg/Universal/FirmwareVolume/FwVolDxe/FwVolAttrib.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/IntelFrameworkModulePkg/Universal/FirmwareVolume/FwVolDxe/FwVolAttrib.c b/IntelFrameworkModulePkg/Universal/FirmwareVolume/FwVolDxe/FwVolAttrib.c new file mode 100644 index 0000000000..0e4ddf8bea --- /dev/null +++ b/IntelFrameworkModulePkg/Universal/FirmwareVolume/FwVolDxe/FwVolAttrib.c @@ -0,0 +1,220 @@ +/** @file
+
+ Implements get/set firmware volume attributes.
+
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions
+ of the BSD License which accompanies this distribution. The
+ full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "FwVolDriver.h"
+
+/**
+ Retrieves attributes, insures positive polarity of attribute bits, returns
+ resulting attributes in output parameter.
+
+ @param This Calling context
+ @param Attributes output buffer which contains attributes
+
+ @retval EFI_SUCCESS Successfully got volume attributes
+
+**/
+EFI_STATUS
+EFIAPI
+FvGetVolumeAttributes (
+ IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
+ OUT EFI_FV_ATTRIBUTES *Attributes
+ )
+{
+ EFI_STATUS Status;
+ FV_DEVICE *FvDevice;
+ EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
+ EFI_FVB_ATTRIBUTES_2 FvbAttributes;
+
+ FvDevice = FV_DEVICE_FROM_THIS (This);
+ Fvb = FvDevice->Fvb;
+
+ //
+ // First get the Firmware Volume Block Attributes
+ //
+ Status = Fvb->GetAttributes (Fvb, &FvbAttributes);
+ FvbAttributes &= 0xfffff0ff;
+
+ *Attributes = FvbAttributes;
+ *Attributes |= EFI_FV2_WRITE_POLICY_RELIABLE;
+ return Status;
+}
+
+/**
+ Sets current attributes for volume.
+
+ @param This Calling context
+ @param Attributes On input, FvAttributes is a pointer to
+ an EFI_FV_ATTRIBUTES containing the
+ desired firmware volume settings. On
+ successful return, it contains the new
+ settings of the firmware volume. On
+ unsuccessful return, FvAttributes is not
+ modified and the firmware volume
+ settings are not changed.
+
+ @retval EFI_SUCCESS The requested firmware volume attributes
+ were set and the resulting
+ EFI_FV_ATTRIBUTES is returned in
+ FvAttributes.
+ @retval EFI_ACCESS_DENIED Atrribute is locked down.
+ @retval EFI_INVALID_PARAMETER Atrribute is not valid.
+
+**/
+EFI_STATUS
+EFIAPI
+FvSetVolumeAttributes (
+ IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
+ IN OUT EFI_FV_ATTRIBUTES *Attributes
+ )
+{
+ EFI_STATUS Status;
+ FV_DEVICE *FvDevice;
+ EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
+ EFI_FVB_ATTRIBUTES_2 OldFvbAttributes;
+ EFI_FVB_ATTRIBUTES_2 NewFvbAttributes;
+ UINT64 NewStatus;
+ UINT32 Capabilities;
+
+ FvDevice = FV_DEVICE_FROM_THIS (This);
+ Fvb = FvDevice->Fvb;
+
+ //
+ // First get the current Volume Attributes
+ //
+ Status = Fvb->GetAttributes (
+ Fvb,
+ &OldFvbAttributes
+ );
+
+ if ((OldFvbAttributes & EFI_FVB2_LOCK_STATUS) != 0) {
+ return EFI_ACCESS_DENIED;
+ }
+ //
+ // Only status attributes can be updated.
+ //
+ Capabilities = OldFvbAttributes & EFI_FVB2_CAPABILITIES;
+ NewStatus = (*Attributes) & EFI_FVB2_STATUS;
+
+ //
+ // Test read disable
+ //
+ if ((Capabilities & EFI_FVB2_READ_DISABLED_CAP) == 0) {
+ if ((NewStatus & EFI_FVB2_READ_STATUS) == 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test read enable
+ //
+ if ((Capabilities & EFI_FVB2_READ_ENABLED_CAP) == 0) {
+ if ((NewStatus & EFI_FVB2_READ_STATUS) != 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test write disable
+ //
+ if ((Capabilities & EFI_FVB2_WRITE_DISABLED_CAP) == 0) {
+ if ((NewStatus & EFI_FVB2_WRITE_STATUS) == 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test write enable
+ //
+ if ((Capabilities & EFI_FVB2_WRITE_ENABLED_CAP) == 0) {
+ if ((NewStatus & EFI_FVB2_WRITE_STATUS) != 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+ //
+ // Test lock
+ //
+ if ((Capabilities & EFI_FVB2_LOCK_CAP) == 0) {
+ if ((NewStatus & EFI_FVB2_LOCK_STATUS) != 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+
+ NewFvbAttributes = OldFvbAttributes & (0xFFFFFFFF & (~EFI_FVB2_STATUS));
+ NewFvbAttributes |= NewStatus;
+ Status = Fvb->SetAttributes (
+ Fvb,
+ &NewFvbAttributes
+ );
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ *Attributes = 0;
+
+ This->GetVolumeAttributes (
+ This,
+ Attributes
+ );
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Return information of type InformationType for the requested firmware
+ volume.
+
+ @param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
+ @param InformationType InformationType for requested.
+ @param BufferSize On input, size of Buffer.On output, the amount of
+ data returned in Buffer.
+ @param Buffer A poniter to the data buffer to return.
+
+ @return EFI_UNSUPPORTED Could not get.
+
+**/
+EFI_STATUS
+EFIAPI
+FvGetVolumeInfo (
+ IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
+ IN CONST EFI_GUID *InformationType,
+ IN OUT UINTN *BufferSize,
+ OUT VOID *Buffer
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ Set information with InformationType into the requested firmware volume.
+
+ @param This Pointer to EFI_FIRMWARE_VOLUME2_PROTOCOL.
+ @param InformationType InformationType for requested.
+ @param BufferSize Size of Buffer data.
+ @param Buffer A poniter to the data buffer to be set.
+
+ @retval EFI_UNSUPPORTED Could not set.
+
+**/
+EFI_STATUS
+EFIAPI
+FvSetVolumeInfo (
+ IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,
+ IN CONST EFI_GUID *InformationType,
+ IN UINTN BufferSize,
+ IN CONST VOID *Buffer
+ )
+{
+ return EFI_UNSUPPORTED;
+}
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