/*
* Copyright (C) 2014, 2015 Intel Corporation
*
* Authors:
* Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
*
* Maintained by: <tpmdd-devel@lists.sourceforge.net>
*
* This file contains TPM2 protocol implementations of the commands
* used by the kernel internally.
*
* 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.
*/
#include "tpm.h"
#include <crypto/hash_info.h>
#include <keys/trusted-type.h>
enum tpm2_object_attributes {
TPM2_OA_USER_WITH_AUTH = BIT(6),
};
enum tpm2_session_attributes {
TPM2_SA_CONTINUE_SESSION = BIT(0),
};
struct tpm2_startup_in {
__be16 startup_type;
} __packed;
struct tpm2_get_tpm_pt_in {
__be32 cap_id;
__be32 property_id;
__be32 property_cnt;
} __packed;
struct tpm2_get_tpm_pt_out {
u8 more_data;
__be32 subcap_id;
__be32 property_cnt;
__be32 property_id;
__be32 value;
} __packed;
struct tpm2_get_random_in {
__be16 size;
} __packed;
struct tpm2_get_random_out {
__be16 size;
u8 buffer[TPM_MAX_RNG_DATA];
} __packed;
union tpm2_cmd_params {
struct tpm2_startup_in startup_in;
struct tpm2_get_tpm_pt_in get_tpm_pt_in;
struct tpm2_get_tpm_pt_out get_tpm_pt_out;
struct tpm2_get_random_in getrandom_in;
struct tpm2_get_random_out getrandom_out;
};
struct tpm2_cmd {
tpm_cmd_header header;
union tpm2_cmd_params params;
} __packed;
struct tpm2_hash {
unsigned int crypto_id;
unsigned int tpm_id;
};
static struct tpm2_hash tpm2_hash_map[] = {
{HASH_ALGO_SHA1, TPM2_ALG_SHA1},
{HASH_ALGO_SHA256, TPM2_ALG_SHA256},
{HASH_ALGO_SHA384, TPM2_ALG_SHA384},
{HASH_ALGO_SHA512, TPM2_ALG_SHA512},
{HASH_ALGO_SM3_256, TPM2_ALG_SM3_256},
};
/*
* Array with one entry per ordinal defining the maximum amount
* of time the chip could take to return the result. The values
* of the SHORT, MEDIUM, and LONG durations are taken from the
* PC Client Profile (PTP) specification.
* LONG_LONG is for commands that generates keys which empirically
* takes longer time on some systems.
*/
static const u8 tpm2_ordinal_duration[TPM2_CC_LAST - TPM2_CC_FIRST + 1] = {
TPM_UNDEFINED, /* 11F */
TPM_UNDEFINED, /* 120 */
TPM_LONG, /* 121 */
TPM_UNDEFINED, /* 122 */
TPM_UNDEFINED, /* 123 */
TPM_UNDEFINED, /* 124 */
TPM_UNDEFINED, /* 125 */
TPM_UNDEFINED, /* 126 */
TPM_UNDEFINED, /* 127 */
TPM_UNDEFINED, /* 128 */
TPM_LONG, /* 129 */
TPM_UNDEFINED, /* 12a */
TPM_UNDEFINED, /* 12b */
TPM_UNDEFINED, /* 12c */
TPM_UNDEFINED, /* 12d */
TPM_UNDEFINED, /* 12e */
TPM_UNDEFINED, /* 12f */
TPM_UNDEFINED, /* 130 */
TPM_LONG_LONG, /* 131 */
TPM_UNDEFINED, /* 132 */
TPM_UNDEFINED, /* 133 */
TPM_UNDEFINED, /* 134 */
TPM_UNDEFINED, /* 135 */
TPM_UNDEFINED, /* 136 */
TPM_UNDEFINED, /* 137 */
TPM_UNDEFINED, /* 138 */
TPM_UNDEFINED, /* 139 */
TPM_UNDEFINED, /* 13a */
TPM_UNDEFINED, /* 13b */
TPM_UNDEFINED, /* 13c */
TPM_UNDEFINED, /* 13d */
TPM_MEDIUM, /* 13e */
TPM_UNDEFINED, /* 13f */
TPM_UNDEFINED, /* 140 */
TPM_UNDEFINED, /* 141 */
TPM_UNDEFINED, /* 142 */
TPM_LONG, /* 143 */
TPM_MEDIUM, /* 144 */
TPM_UNDEFINED, /* 145 */
TPM_UNDEFINED, /* 146 */
TPM_UNDEFINED, /* 147 */
TPM_UNDEFINED, /* 148 */
TPM_UNDEFINED, /* 149 */
TPM_UNDEFINED, /* 14a */
TPM_UNDEFINED, /* 14b */
TPM_UNDEFINED, /* 14c */
TPM_UNDEFINED, /* 14d */
TPM_LONG, /* 14e */
TPM_UNDEFINED, /* 14f */
TPM_UNDEFINED, /* 150 */
TPM_UNDEFINED, /* 151 */
TPM_UNDEFINED, /* 152 */
TPM_LONG_LONG, /* 153 */
TPM_UNDEFINED, /* 154 */
TPM_UNDEFINED, /* 155 */
TPM_UNDEFINED, /* 156 */
TPM_UNDEFINED, /* 157 */
TPM_UNDEFINED, /* 158 */
TPM_UNDEFINED, /* 159 */
TPM_UNDEFINED, /* 15a */
TPM_UNDEFINED, /* 15b */
TPM_MEDIUM, /* 15c */
TPM_UNDEFINED, /* 15d */
TPM_UNDEFINED, /* 15e */
TPM_UNDEFINED, /* 15f */
TPM_UNDEFINED, /* 160 */
TPM_UNDEFINED, /* 161 */
TPM_UNDEFINED, /* 162 */
TPM_UNDEFINED, /* 163 */
TPM_UNDEFINED, /* 164 */
TPM_UNDEFINED, /* 165 */
TPM_UNDEFINED, /* 166 */
TPM_UNDEFIN