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DM: tpm emulator to communicate with swtpm

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This patch will create control channel and command channel
so as to communicate with swtpm. Based on the 2 channels,
a set of APIs will be implemented and exposed.

Tracked-On: #1924
Signed-off-by: Deng Wei <wei.a.deng@intel.com>
Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Signed-off-by: yingbinx <yingbinx.zeng@intel.com>
Reviewed-by: Zhu Bing <bing.zhu@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
This commit is contained in:
Qi Yadong
2018-09-13 15:58:45 +08:00
committed by lijinxia
parent 1ba7cebb1d
commit 4b83e37c7a
3 changed files with 872 additions and 0 deletions
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51
devicemodel/hw/platform/tpm/tpm_internal.h Normal file
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/*
* Copyright (C) 2018 Intel Corporation
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _TPM_INTERNAL_H_
#define _TPM_INTERNAL_H_
/* TPMCommBuffer will package TPM2 command and
* response which are handled by TPM emulator
*
* locty: the locality TPM emulator used
* in & in_len: To indicate the buffer and the
* size for TPM command
* out & out_len: To indicate the buffer and
* the size for TPM response
*/
typedef struct TPMCommBuffer {
uint8_t locty;
const uint8_t *in;
uint32_t in_len;
uint8_t *out;
uint32_t out_len;
bool selftest_done;
} TPMCommBuffer;
/* APIs by tpm_emulator.c */
/* Create Ctrl channel and Cmd channel so as to communicate with SWTPM */
int init_tpm_emulator(const char *sock_path);
/* Shutdown of SWTPM and close Ctrl channel and Cmd channel */
void deinit_tpm_emulator(void);
/* Send Ctrl channel command CMD_GET_TPMESTABLISHED to SWTPM */
bool swtpm_get_tpm_established_flag(void);
/* Send Ctrl channel command CMD_RESET_TPMESTABLISHED to SWTPM */
int swtpm_reset_tpm_established_flag(void);
/* Send TPM2 command request to SWTPM by using Cmd channel */
int swtpm_handle_request(TPMCommBuffer *cmd);
/* Initialization for SWTPM */
int swtpm_startup(size_t buffersize);
/* Cancellation of the current TPM2 command */
void swtpm_cancel_cmd(void);
#endif