MdeModulePkg: Add SMM LockBox
This includes: * LockBox protocol definition * LockBoxLib library interface definition * SmmLockBox GUID * LockBoxNullLib library implementation * 2 SmmLockBoxLib library implementations * SmmLockBox SMM driver Signed-off-by: jljusten Reviewed-by: mdkinney Reviewed-by: geekboy15a Reviewed-by: jyao1 Reviewed-by: lgao4 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12029 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten
455
MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c
Normal file
455
MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c
Normal file
@ -0,0 +1,455 @@
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/** @file
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Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions
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of the BSD License which accompanies this distribution. The
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full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiDxe.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/LockBoxLib.h>
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#include <Library/DebugLib.h>
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#include <Protocol/SmmCommunication.h>
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#include <Guid/SmmLockBox.h>
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#include "SmmLockBoxLibPrivate.h"
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/**
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This function will save confidential information to lockbox.
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@param Guid the guid to identify the confidential information
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@param Buffer the address of the confidential information
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@param Length the length of the confidential information
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@retval RETURN_SUCCESS the information is saved successfully.
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@retval RETURN_INVALID_PARAMETER the Guid is NULL, or Buffer is NULL, or Length is 0
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@retval RETURN_ALREADY_STARTED the requested GUID already exist.
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@retval RETURN_OUT_OF_RESOURCES no enough resource to save the information.
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@retval RETURN_ACCESS_DENIED it is too late to invoke this interface
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@retval RETURN_NOT_STARTED it is too early to invoke this interface
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@retval RETURN_UNSUPPORTED the service is not supported by implementaion.
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**/
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RETURN_STATUS
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EFIAPI
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SaveLockBox (
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IN GUID *Guid,
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IN VOID *Buffer,
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IN UINTN Length
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)
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{
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EFI_STATUS Status;
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EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
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EFI_SMM_LOCK_BOX_PARAMETER_SAVE *LockBoxParameterSave;
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EFI_SMM_COMMUNICATE_HEADER *CommHeader;
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UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SAVE)];
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UINTN CommSize;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib SaveLockBox - Enter\n"));
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//
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// Basic check
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//
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if ((Guid == NULL) || (Buffer == NULL) || (Length == 0)) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Get needed resource
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//
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Status = gBS->LocateProtocol (
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&gEfiSmmCommunicationProtocolGuid,
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NULL,
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(VOID **)&SmmCommunication
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);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_STARTED;
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}
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//
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// Prepare parameter
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//
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CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
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CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
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CommHeader->MessageLength = sizeof(*LockBoxParameterSave);
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LockBoxParameterSave = (EFI_SMM_LOCK_BOX_PARAMETER_SAVE *)&CommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
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LockBoxParameterSave->Header.Command = EFI_SMM_LOCK_BOX_COMMAND_SAVE;
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LockBoxParameterSave->Header.DataLength = sizeof(*LockBoxParameterSave);
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LockBoxParameterSave->Header.ReturnStatus = (UINT64)-1;
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CopyMem (&LockBoxParameterSave->Guid, Guid, sizeof(*Guid));
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LockBoxParameterSave->Buffer = (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer;
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LockBoxParameterSave->Length = (UINT64)Length;
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//
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// Send command
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//
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CommSize = sizeof(CommBuffer);
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Status = SmmCommunication->Communicate (
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SmmCommunication,
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&CommBuffer[0],
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&CommSize
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);
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ASSERT_EFI_ERROR (Status);
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Status = (EFI_STATUS)LockBoxParameterSave->Header.ReturnStatus;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib SaveLockBox - Exit (%r)\n", Status));
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//
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// Done
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//
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return Status;
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}
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/**
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This function will set lockbox attributes.
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@param Guid the guid to identify the confidential information
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@param Attributes the attributes of the lockbox
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@retval RETURN_SUCCESS the information is saved successfully.
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@retval RETURN_INVALID_PARAMETER attributes is invalid.
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@retval RETURN_NOT_FOUND the requested GUID not found.
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@retval RETURN_ACCESS_DENIED it is too late to invoke this interface
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@retval RETURN_NOT_STARTED it is too early to invoke this interface
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@retval RETURN_UNSUPPORTED the service is not supported by implementaion.
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**/
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RETURN_STATUS
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EFIAPI
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SetLockBoxAttributes (
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IN GUID *Guid,
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IN UINT64 Attributes
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)
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{
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EFI_STATUS Status;
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EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
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EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES *LockBoxParameterSetAttributes;
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EFI_SMM_COMMUNICATE_HEADER *CommHeader;
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UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES)];
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UINTN CommSize;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib SetLockBoxAttributes - Enter\n"));
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//
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// Basic check
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//
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if ((Guid == NULL) ||
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((Attributes & ~LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE) != 0)) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Get needed resource
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//
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Status = gBS->LocateProtocol (
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&gEfiSmmCommunicationProtocolGuid,
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NULL,
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(VOID **)&SmmCommunication
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);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_STARTED;
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}
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//
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// Prepare parameter
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//
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CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
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CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
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CommHeader->MessageLength = sizeof(*LockBoxParameterSetAttributes);
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LockBoxParameterSetAttributes = (EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES *)&CommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
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LockBoxParameterSetAttributes->Header.Command = EFI_SMM_LOCK_BOX_COMMAND_SET_ATTRIBUTES;
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LockBoxParameterSetAttributes->Header.DataLength = sizeof(*LockBoxParameterSetAttributes);
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LockBoxParameterSetAttributes->Header.ReturnStatus = (UINT64)-1;
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CopyMem (&LockBoxParameterSetAttributes->Guid, Guid, sizeof(*Guid));
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LockBoxParameterSetAttributes->Attributes = (UINT64)Attributes;
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//
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// Send command
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//
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CommSize = sizeof(CommBuffer);
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Status = SmmCommunication->Communicate (
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SmmCommunication,
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&CommBuffer[0],
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&CommSize
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);
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ASSERT_EFI_ERROR (Status);
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Status = (EFI_STATUS)LockBoxParameterSetAttributes->Header.ReturnStatus;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib SetLockBoxAttributes - Exit (%r)\n", Status));
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//
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// Done
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//
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return Status;
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}
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/**
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This function will update confidential information to lockbox.
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@param Guid the guid to identify the original confidential information
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@param Offset the offset of the original confidential information
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@param Buffer the address of the updated confidential information
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@param Length the length of the updated confidential information
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@retval RETURN_SUCCESS the information is saved successfully.
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@retval RETURN_INVALID_PARAMETER the Guid is NULL, or Buffer is NULL, or Length is 0.
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@retval RETURN_NOT_FOUND the requested GUID not found.
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@retval RETURN_BUFFER_TOO_SMALL the original buffer to too small to hold new information.
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@retval RETURN_ACCESS_DENIED it is too late to invoke this interface
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@retval RETURN_NOT_STARTED it is too early to invoke this interface
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@retval RETURN_UNSUPPORTED the service is not supported by implementaion.
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**/
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RETURN_STATUS
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EFIAPI
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UpdateLockBox (
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IN GUID *Guid,
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IN UINTN Offset,
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IN VOID *Buffer,
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IN UINTN Length
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)
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{
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EFI_STATUS Status;
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EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
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EFI_SMM_LOCK_BOX_PARAMETER_UPDATE *LockBoxParameterUpdate;
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EFI_SMM_COMMUNICATE_HEADER *CommHeader;
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UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_UPDATE)];
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UINTN CommSize;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib UpdateLockBox - Enter\n"));
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//
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// Basic check
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//
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if ((Guid == NULL) || (Buffer == NULL) || (Length == 0)) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Get needed resource
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//
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Status = gBS->LocateProtocol (
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&gEfiSmmCommunicationProtocolGuid,
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NULL,
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(VOID **)&SmmCommunication
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);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_STARTED;
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}
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//
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// Prepare parameter
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//
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CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
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CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
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CommHeader->MessageLength = sizeof(*LockBoxParameterUpdate);
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LockBoxParameterUpdate = (EFI_SMM_LOCK_BOX_PARAMETER_UPDATE *)(UINTN)&CommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
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LockBoxParameterUpdate->Header.Command = EFI_SMM_LOCK_BOX_COMMAND_UPDATE;
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LockBoxParameterUpdate->Header.DataLength = sizeof(*LockBoxParameterUpdate);
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LockBoxParameterUpdate->Header.ReturnStatus = (UINT64)-1;
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CopyMem (&LockBoxParameterUpdate->Guid, Guid, sizeof(*Guid));
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LockBoxParameterUpdate->Offset = (UINT64)Offset;
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LockBoxParameterUpdate->Buffer = (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer;
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LockBoxParameterUpdate->Length = (UINT64)Length;
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//
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// Send command
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//
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CommSize = sizeof(CommBuffer);
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Status = SmmCommunication->Communicate (
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SmmCommunication,
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&CommBuffer[0],
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&CommSize
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);
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ASSERT_EFI_ERROR (Status);
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Status = (EFI_STATUS)LockBoxParameterUpdate->Header.ReturnStatus;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib UpdateLockBox - Exit (%r)\n", Status));
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//
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// Done
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//
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return Status;
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}
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/**
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This function will restore confidential information from lockbox.
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@param Guid the guid to identify the confidential information
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@param Buffer the address of the restored confidential information
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NULL means restored to original address, Length MUST be NULL at same time.
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@param Length the length of the restored confidential information
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@retval RETURN_SUCCESS the information is restored successfully.
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@retval RETURN_INVALID_PARAMETER the Guid is NULL, or one of Buffer and Length is NULL.
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@retval RETURN_WRITE_PROTECTED Buffer and Length are NULL, but the LockBox has no
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LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE attribute.
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@retval RETURN_BUFFER_TOO_SMALL the Length is too small to hold the confidential information.
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@retval RETURN_NOT_FOUND the requested GUID not found.
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@retval RETURN_NOT_STARTED it is too early to invoke this interface
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@retval RETURN_ACCESS_DENIED not allow to restore to the address
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@retval RETURN_UNSUPPORTED the service is not supported by implementaion.
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**/
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RETURN_STATUS
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EFIAPI
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RestoreLockBox (
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IN GUID *Guid,
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IN VOID *Buffer, OPTIONAL
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IN OUT UINTN *Length OPTIONAL
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)
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{
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EFI_STATUS Status;
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EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
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EFI_SMM_LOCK_BOX_PARAMETER_RESTORE *LockBoxParameterRestore;
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EFI_SMM_COMMUNICATE_HEADER *CommHeader;
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UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE)];
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UINTN CommSize;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib RestoreLockBox - Enter\n"));
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//
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// Basic check
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//
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if ((Guid == NULL) ||
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((Buffer == NULL) && (Length != NULL)) ||
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((Buffer != NULL) && (Length == NULL))) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Get needed resource
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//
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Status = gBS->LocateProtocol (
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&gEfiSmmCommunicationProtocolGuid,
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NULL,
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(VOID **)&SmmCommunication
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);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_STARTED;
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}
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//
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// Prepare parameter
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//
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CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
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CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
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CommHeader->MessageLength = sizeof(*LockBoxParameterRestore);
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LockBoxParameterRestore = (EFI_SMM_LOCK_BOX_PARAMETER_RESTORE *)&CommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
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LockBoxParameterRestore->Header.Command = EFI_SMM_LOCK_BOX_COMMAND_RESTORE;
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LockBoxParameterRestore->Header.DataLength = sizeof(*LockBoxParameterRestore);
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LockBoxParameterRestore->Header.ReturnStatus = (UINT64)-1;
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CopyMem (&LockBoxParameterRestore->Guid, Guid, sizeof(*Guid));
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LockBoxParameterRestore->Buffer = (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer;
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if (Length != NULL) {
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LockBoxParameterRestore->Length = (EFI_PHYSICAL_ADDRESS)*Length;
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} else {
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LockBoxParameterRestore->Length = 0;
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}
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//
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// Send command
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//
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CommSize = sizeof(CommBuffer);
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Status = SmmCommunication->Communicate (
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SmmCommunication,
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&CommBuffer[0],
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&CommSize
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);
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ASSERT_EFI_ERROR (Status);
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if (Length != NULL) {
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*Length = (UINTN)LockBoxParameterRestore->Length;
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}
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Status = (EFI_STATUS)LockBoxParameterRestore->Header.ReturnStatus;
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DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib RestoreLockBox - Exit (%r)\n", Status));
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//
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// Done
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//
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return Status;
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}
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/**
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This function will restore confidential information from all lockbox which have RestoreInPlace attribute.
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@retval RETURN_SUCCESS the information is restored successfully.
|
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@retval RETURN_NOT_STARTED it is too early to invoke this interface
|
||||
@retval RETURN_UNSUPPORTED the service is not supported by implementaion.
|
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**/
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RETURN_STATUS
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EFIAPI
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RestoreAllLockBoxInPlace (
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VOID
|
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)
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
|
||||
EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE *LockBoxParameterRestoreAllInPlace;
|
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EFI_SMM_COMMUNICATE_HEADER *CommHeader;
|
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UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE)];
|
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UINTN CommSize;
|
||||
|
||||
DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib RestoreAllLockBoxInPlace - Enter\n"));
|
||||
|
||||
//
|
||||
// Get needed resource
|
||||
//
|
||||
Status = gBS->LocateProtocol (
|
||||
&gEfiSmmCommunicationProtocolGuid,
|
||||
NULL,
|
||||
(VOID **)&SmmCommunication
|
||||
);
|
||||
if (EFI_ERROR (Status)) {
|
||||
return EFI_NOT_STARTED;
|
||||
}
|
||||
|
||||
//
|
||||
// Prepare parameter
|
||||
//
|
||||
CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
|
||||
CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
|
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CommHeader->MessageLength = sizeof(*LockBoxParameterRestoreAllInPlace);
|
||||
|
||||
LockBoxParameterRestoreAllInPlace = (EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE *)&CommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
|
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LockBoxParameterRestoreAllInPlace->Header.Command = EFI_SMM_LOCK_BOX_COMMAND_RESTORE_ALL_IN_PLACE;
|
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LockBoxParameterRestoreAllInPlace->Header.DataLength = sizeof(*LockBoxParameterRestoreAllInPlace);
|
||||
LockBoxParameterRestoreAllInPlace->Header.ReturnStatus = (UINT64)-1;
|
||||
|
||||
//
|
||||
// Send command
|
||||
//
|
||||
CommSize = sizeof(CommBuffer);
|
||||
Status = SmmCommunication->Communicate (
|
||||
SmmCommunication,
|
||||
&CommBuffer[0],
|
||||
&CommSize
|
||||
);
|
||||
ASSERT_EFI_ERROR (Status);
|
||||
|
||||
Status = (EFI_STATUS)LockBoxParameterRestoreAllInPlace->Header.ReturnStatus;
|
||||
|
||||
DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib RestoreAllLockBoxInPlace - Exit (%r)\n", Status));
|
||||
|
||||
//
|
||||
// Done
|
||||
//
|
||||
return Status;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user