mirror of https://github.com/acidanthera/audk.git
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/** @file
|
|
Implement TPM1.2 Startup related command.
|
|
|
|
Copyright (c) 2013, 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 <PiPei.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/Tpm12DeviceLib.h>
|
|
|
|
#pragma pack(1)
|
|
|
|
typedef struct {
|
|
TPM_RQU_COMMAND_HDR Hdr;
|
|
TPM_STARTUP_TYPE TpmSt;
|
|
} TPM_CMD_START_UP;
|
|
|
|
#pragma pack()
|
|
|
|
/**
|
|
Send Startup command to TPM1.2.
|
|
|
|
@param TpmSt Startup Type.
|
|
|
|
@retval EFI_SUCCESS Operation completed successfully.
|
|
@retval EFI_DEVICE_ERROR Unexpected device behavior.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
Tpm12Startup (
|
|
IN TPM_STARTUP_TYPE TpmSt
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
TPM_CMD_START_UP Command;
|
|
TPM_RSP_COMMAND_HDR Response;
|
|
UINT32 Length;
|
|
|
|
//
|
|
// send Tpm command TPM_ORD_Startup
|
|
//
|
|
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
|
|
Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
|
|
Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_Startup);
|
|
Command.TpmSt = SwapBytes16 (TpmSt);
|
|
Length = sizeof (Response);
|
|
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
switch (SwapBytes32(Response.returnCode)) {
|
|
case TPM_SUCCESS:
|
|
case TPM_INVALID_POSTINIT:
|
|
// In warm reset, TPM may response TPM_INVALID_POSTINIT
|
|
return EFI_SUCCESS;
|
|
default:
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Send SaveState command to TPM1.2.
|
|
|
|
@retval EFI_SUCCESS Operation completed successfully.
|
|
@retval EFI_DEVICE_ERROR Unexpected device behavior.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
Tpm12SaveState (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
TPM_RQU_COMMAND_HDR Command;
|
|
TPM_RSP_COMMAND_HDR Response;
|
|
UINT32 Length;
|
|
|
|
//
|
|
// send Tpm command TPM_ORD_SaveState
|
|
//
|
|
Command.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
|
|
Command.paramSize = SwapBytes32 (sizeof (Command));
|
|
Command.ordinal = SwapBytes32 (TPM_ORD_SaveState);
|
|
Length = sizeof (Response);
|
|
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
switch (SwapBytes32 (Response.returnCode)) {
|
|
case TPM_SUCCESS:
|
|
return EFI_SUCCESS;
|
|
default:
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
}
|