d518c7a2d7
Drop a lot of u-boot-isms and share common TIS API between I2C driver and LPC driver. Signed-off-by: Stefan Reinauer <reinauer@google.com> Change-Id: I43be8eea0acbdaef58ef256a2bc5336b83368a0e Reviewed-on: https://chromium-review.googlesource.com/175670 Commit-Queue: Stefan Reinauer <reinauer@chromium.org> Tested-by: Stefan Reinauer <reinauer@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 3fc8515b9dcef66998658e1aa5c020d22509810c) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6855 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright 2011 Google Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef TPM_H_
|
|
#define TPM_H_
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
/*
|
|
* 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 u8 *sendbuf, size_t send_size, u8 *recvbuf,
|
|
size_t *recv_len);
|
|
|
|
#endif /* TPM_H_ */
|