Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (C) 2004,2007,2008 IBM Corporation
3 *
4 * Authors:
5 * Leendert van Doorn <leendert@watson.ibm.com>
6 * Dave Safford <safford@watson.ibm.com>
7 * Reiner Sailer <sailer@watson.ibm.com>
8 * Kylene Hall <kjhall@us.ibm.com>
9 * Debora Velarde <dvelarde@us.ibm.com>
10 *
11 * Maintained by: <tpmdd_devel@lists.sourceforge.net>
12 *
13 * Device driver for TCG/TCPA TPM (trusted platform module).
14 * Specifications at www.trustedcomputinggroup.org
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License as
18 * published by the Free Software Foundation, version 2 of the
19 * License.
20 *
21 */
22#ifndef __LINUX_TPM_H__
23#define __LINUX_TPM_H__
24
25#define TPM_DIGEST_SIZE 20 /* Max TPM v1.2 PCR size */
26
27/*
28 * Chip num is this value or a valid tpm idx
29 */
30#define TPM_ANY_NUM 0xFFFF
31
32#if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
33
34extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf);
35extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash);
36extern int tpm_send(u32 chip_num, void *cmd, size_t buflen);
37extern int tpm_get_random(u32 chip_num, u8 *data, size_t max);
38#else
39static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) {
40 return -ENODEV;
41}
42static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) {
43 return -ENODEV;
44}
45static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) {
46 return -ENODEV;
47}
48static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) {
49 return -ENODEV;
50}
51#endif
52#endif