mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-25 05:04:23 +08:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef __TIS_H
|
|
#define __TIS_H
|
|
|
|
#include <common.h>
|
|
|
|
/* Low-level interface to access TPM */
|
|
|
|
/*
|
|
* tis_init()
|
|
*
|
|
* Initialize the TPM device. Returns 0 on success or -1 on
|
|
* failure (in case device probing did not succeed).
|
|
*/
|
|
int tis_init(void);
|
|
|
|
/*
|
|
* tis_open()
|
|
*
|
|
* Requests access to locality 0 for the caller. After all commands have been
|
|
* completed the caller is supposed to call tis_close().
|
|
*
|
|
* Returns 0 on success, -1 on failure.
|
|
*/
|
|
int tis_open(void);
|
|
|
|
/*
|
|
* tis_close()
|
|
*
|
|
* terminate the currect session with the TPM by releasing the locked
|
|
* locality. Returns 0 on success of -1 on failure (in case lock
|
|
* removal did not succeed).
|
|
*/
|
|
int tis_close(void);
|
|
|
|
/*
|
|
* tis_sendrecv()
|
|
*
|
|
* Send the requested data to the TPM and then try to get its response
|
|
*
|
|
* @sendbuf - buffer of the data to send
|
|
* @send_size size of the data to send
|
|
* @recvbuf - memory to save the response to
|
|
* @recv_len - pointer to the size of the response buffer
|
|
*
|
|
* Returns 0 on success (and places the number of response bytes at recv_len)
|
|
* or -1 on failure.
|
|
*/
|
|
int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf,
|
|
size_t *recv_len);
|
|
|
|
#endif /* __TIS_H */
|