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 /*
26 * Chip num is this value or a valid tpm idx
27 */
28 #define TPM_ANY_NUM 0xFFFF
29
30 #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
31
32 extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf);
33 extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash);
34 extern int tpm_send(u32 chip_num, void *cmd, size_t buflen);
35 #else
tpm_pcr_read(u32 chip_num,int pcr_idx,u8 * res_buf)36 static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) {
37 return -ENODEV;
38 }
tpm_pcr_extend(u32 chip_num,int pcr_idx,const u8 * hash)39 static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) {
40 return -ENODEV;
41 }
tpm_send(u32 chip_num,void * cmd,size_t buflen)42 static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) {
43 return -ENODEV;
44 }
45 #endif
46 #endif
47