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tpm: Clean up I2C TPM driver

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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>
This commit is contained in:
Stefan Reinauer
2013-11-04 17:38:32 -08:00
committed by Isaac Christensen
parent 5c85e66b17
commit d518c7a2d7
12 changed files with 695 additions and 827 deletions
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29
src/include/pc80/tpm.h
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@@ -1,29 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
*
* 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_
int tis_init(void);
int tis_open(void);
int tis_close(void);
int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf,
size_t *recv_len);
#endif /* TPM_H_ */

69
src/include/tpm.h Normal file
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@@ -0,0 +1,69 @@
/*
* 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_ */