mirror of https://github.com/acidanthera/audk.git
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/** @file
|
|
Implement TPM1.2 PCR related commands.
|
|
|
|
Copyright (c) 2016, 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/Tpm12CommandLib.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
#include <Library/Tpm12DeviceLib.h>
|
|
|
|
#pragma pack(1)
|
|
|
|
typedef struct {
|
|
TPM_RQU_COMMAND_HDR Hdr;
|
|
TPM_PCRINDEX PcrIndex;
|
|
TPM_DIGEST TpmDigest;
|
|
} TPM_CMD_EXTEND;
|
|
|
|
typedef struct {
|
|
TPM_RSP_COMMAND_HDR Hdr;
|
|
TPM_DIGEST TpmDigest;
|
|
} TPM_RSP_EXTEND;
|
|
|
|
#pragma pack()
|
|
|
|
/**
|
|
Extend a TPM PCR.
|
|
|
|
@param[in] DigestToExtend The 160 bit value representing the event to be recorded.
|
|
@param[in] PcrIndex The PCR to be updated.
|
|
@param[out] NewPcrValue New PCR value after extend.
|
|
|
|
@retval EFI_SUCCESS Operation completed successfully.
|
|
@retval EFI_TIMEOUT The register can't run into the expected status in time.
|
|
@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.
|
|
@retval EFI_DEVICE_ERROR Unexpected device behavior.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
Tpm12Extend (
|
|
IN TPM_DIGEST *DigestToExtend,
|
|
IN TPM_PCRINDEX PcrIndex,
|
|
OUT TPM_DIGEST *NewPcrValue
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
TPM_CMD_EXTEND Command;
|
|
TPM_RSP_EXTEND Response;
|
|
UINT32 Length;
|
|
|
|
//
|
|
// send Tpm command TPM_ORD_Extend
|
|
//
|
|
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
|
|
Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
|
|
Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_Extend);
|
|
Command.PcrIndex = SwapBytes32 (PcrIndex);
|
|
CopyMem (&Command.TpmDigest, DigestToExtend, sizeof (Command.TpmDigest));
|
|
Length = sizeof (Response);
|
|
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
if (SwapBytes32(Response.Hdr.returnCode) != TPM_SUCCESS) {
|
|
DEBUG ((EFI_D_ERROR, "Tpm12Extend: Response Code error! 0x%08x\r\n", SwapBytes32(Response.Hdr.returnCode)));
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
if (NewPcrValue != NULL) {
|
|
CopyMem (NewPcrValue, &Response.TpmDigest, sizeof (*NewPcrValue));
|
|
}
|
|
|
|
return Status;
|
|
}
|