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u-boot/cmd/tpm-v1.c
Ilias Apalodimas e663b2ff4b tpm: Add 'tpm autostart' shell command 
For a TPM device to be operational we need to initialize it and
perform its startup sequence.  The 'tpm init' command currently calls
tpm_init() which ends up calling the ->open() per-device callback and
performs the initial hardware configuration as well as requesting
locality 0 for the caller.  There no code that currently calls
tpm_init() without following up with a tpm_startup() and tpm_self_test_full()
or tpm_continue_self_test().

So let's add a 'tpm autostart' command and call tpm_auto_start() which
leaves the device in an operational state.

It's worth noting that calling tpm_init() only, doesn't allow a someone
to use the TPM since the startup sequence is mandatory. We always
repeat the pattern of calling
- tpm_init()
- tpm_startup()
- tpm_self_test_full() or tpm_continue_self_test()

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2023-06-13 08:51:07 +03:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 The Chromium OS Authors.
*/
#include <common.h>
#include <command.h>
#include <env.h>
#include <malloc.h>
#include <asm/unaligned.h>
#include <tpm-common.h>
#include <tpm-v1.h>
#include "tpm-user-utils.h"
#include <tpm_api.h>
static int do_tpm_startup(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
enum tpm_startup_type mode;
struct udevice *dev;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 2)
return CMD_RET_USAGE;
if (!strcasecmp("TPM_ST_CLEAR", argv[1])) {
mode = TPM_ST_CLEAR;
} else if (!strcasecmp("TPM_ST_STATE", argv[1])) {
mode = TPM_ST_STATE;
} else if (!strcasecmp("TPM_ST_DEACTIVATED", argv[1])) {
mode = TPM_ST_DEACTIVATED;
} else {
printf("Couldn't recognize mode string: %s\n", argv[1]);
return CMD_RET_FAILURE;
}
return report_return_code(tpm_startup(dev, mode));
}
static int do_tpm_nv_define_space(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 index, perm, size;
struct udevice *dev;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 4)
return CMD_RET_USAGE;
index = simple_strtoul(argv[1], NULL, 0);
perm = simple_strtoul(argv[2], NULL, 0);
size = simple_strtoul(argv[3], NULL, 0);
return report_return_code(tpm1_nv_define_space(dev, index, perm, size));
}
static int do_tpm_nv_read_value(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 index, count, rc;
struct udevice *dev;
void *data;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 4)
return CMD_RET_USAGE;
index = simple_strtoul(argv[1], NULL, 0);
data = (void *)simple_strtoul(argv[2], NULL, 0);
count = simple_strtoul(argv[3], NULL, 0);
rc = tpm_nv_read_value(dev, index, data, count);
if (!rc) {
puts("area content:\n");
print_byte_string(data, count);
}
return report_return_code(rc);
}
static int do_tpm_nv_write_value(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
u32 index, rc;
size_t count;
void *data;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 3)
return CMD_RET_USAGE;
index = simple_strtoul(argv[1], NULL, 0);
data = parse_byte_string(argv[2], NULL, &count);
if (!data) {
printf("Couldn't parse byte string %s\n", argv[2]);
return CMD_RET_FAILURE;
}
rc = tpm_nv_write_value(dev, index, data, count);
free(data);
return report_return_code(rc);
}
static int do_tpm_extend(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u8 in_digest[20], out_digest[20];
struct udevice *dev;
u32 index, rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 3)
return CMD_RET_USAGE;
index = simple_strtoul(argv[1], NULL, 0);
if (!parse_byte_string(argv[2], in_digest, NULL)) {
printf("Couldn't parse byte string %s\n", argv[2]);
return CMD_RET_FAILURE;
}
rc = tpm_pcr_extend(dev, index, in_digest, sizeof(in_digest),
out_digest, "cmd");
if (!rc) {
puts("PCR value after execution of the command:\n");
print_byte_string(out_digest, sizeof(out_digest));
}
return report_return_code(rc);
}
static int do_tpm_pcr_read(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 index, count, rc;
struct udevice *dev;
void *data;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 4)
return CMD_RET_USAGE;
index = simple_strtoul(argv[1], NULL, 0);
data = (void *)simple_strtoul(argv[2], NULL, 0);
count = simple_strtoul(argv[3], NULL, 0);
rc = tpm_pcr_read(dev, index, data, count);
if (!rc) {
puts("Named PCR content:\n");
print_byte_string(data, count);
}
return report_return_code(rc);
}
static int do_tpm_tsc_physical_presence(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct udevice *dev;
u16 presence;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 2)
return CMD_RET_USAGE;
presence = (u16)simple_strtoul(argv[1], NULL, 0);
return report_return_code(tpm_tsc_physical_presence(dev, presence));
}
static int do_tpm_read_pubek(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
u32 count, rc;
void *data;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 3)
return CMD_RET_USAGE;
data = (void *)simple_strtoul(argv[1], NULL, 0);
count = simple_strtoul(argv[2], NULL, 0);
rc = tpm_read_pubek(dev, data, count);
if (!rc) {
puts("pubek value:\n");
print_byte_string(data, count);
}
return report_return_code(rc);
}
static int do_tpm_physical_set_deactivated(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct udevice *dev;
u8 state;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 2)
return CMD_RET_USAGE;
state = (u8)simple_strtoul(argv[1], NULL, 0);
return report_return_code(tpm_physical_set_deactivated(dev, state));
}
static int do_tpm_get_capability(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 cap_area, sub_cap, rc;
void *cap;
size_t count;
struct udevice *dev;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 5)
return CMD_RET_USAGE;
cap_area = simple_strtoul(argv[1], NULL, 0);
sub_cap = simple_strtoul(argv[2], NULL, 0);
cap = (void *)simple_strtoul(argv[3], NULL, 0);
count = simple_strtoul(argv[4], NULL, 0);
rc = tpm_get_capability(dev, cap_area, sub_cap, cap, count);
if (!rc) {
puts("capability information:\n");
print_byte_string(cap, count);
}
return report_return_code(rc);
}
static int do_tpm_raw_transfer(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
void *command;
u8 response[1024];
size_t count, response_length = sizeof(response);
u32 rc;
command = parse_byte_string(argv[1], NULL, &count);
if (!command) {
printf("Couldn't parse byte string %s\n", argv[1]);
return CMD_RET_FAILURE;
}
rc = get_tpm(&dev);
if (rc)
return rc;
rc = tpm_xfer(dev, command, count, response, &response_length);
free(command);
if (!rc) {
puts("tpm response:\n");
print_byte_string(response, response_length);
}
return report_return_code(rc);
}
static int do_tpm_nv_define(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 index, perm, size;
struct udevice *dev;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 4)
return CMD_RET_USAGE;
size = type_string_get_space_size(argv[1]);
if (!size) {
printf("Couldn't parse arguments\n");
return CMD_RET_USAGE;
}
index = simple_strtoul(argv[2], NULL, 0);
perm = simple_strtoul(argv[3], NULL, 0);
return report_return_code(tpm1_nv_define_space(dev, index, perm, size));
}
static int do_tpm_nv_read(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 index, count, err;
struct udevice *dev;
void *data;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc < 3)
return CMD_RET_USAGE;
if (argc != 3 + type_string_get_num_values(argv[1]))
return CMD_RET_USAGE;
index = simple_strtoul(argv[2], NULL, 0);
data = type_string_alloc(argv[1], &count);
if (!data) {
printf("Couldn't parse arguments\n");
return CMD_RET_USAGE;
}
err = tpm_nv_read_value(dev, index, data, count);
if (!err) {
if (type_string_write_vars(argv[1], data, argv + 3)) {
printf("Couldn't write to variables\n");
err = ~0;
}
}
free(data);
return report_return_code(err);
}
static int do_tpm_nv_write(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 index, count, err;
struct udevice *dev;
void *data;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc < 3)
return CMD_RET_USAGE;
if (argc != 3 + type_string_get_num_values(argv[1]))
return CMD_RET_USAGE;
index = simple_strtoul(argv[2], NULL, 0);
data = type_string_alloc(argv[1], &count);
if (!data) {
printf("Couldn't parse arguments\n");
return CMD_RET_USAGE;
}
if (type_string_pack(argv[1], argv + 3, data)) {
printf("Couldn't parse arguments\n");
free(data);
return CMD_RET_USAGE;
}
err = tpm_nv_write_value(dev, index, data, count);
free(data);
return report_return_code(err);
}
#ifdef CONFIG_TPM_AUTH_SESSIONS
static int do_tpm_oiap(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 auth_handle, err;
struct udevice *dev;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
err = tpm1_oiap(dev, &auth_handle);
return report_return_code(err);
}
#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
static int do_tpm_load_key_by_sha1(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 parent_handle = 0;
u32 key_len, key_handle, err;
u8 usage_auth[DIGEST_LENGTH];
u8 parent_hash[DIGEST_LENGTH];
void *key;
struct udevice *dev;
err = get_tpm(&dev);
if (err)
return err;
if (argc < 5)
return CMD_RET_USAGE;
parse_byte_string(argv[1], parent_hash, NULL);
key = (void *)simple_strtoul(argv[2], NULL, 0);
key_len = simple_strtoul(argv[3], NULL, 0);
if (strlen(argv[4]) != 2 * DIGEST_LENGTH)
return CMD_RET_FAILURE;
parse_byte_string(argv[4], usage_auth, NULL);
err = tpm1_find_key_sha1(dev, usage_auth, parent_hash, &parent_handle);
if (err) {
printf("Could not find matching parent key (err = %d)\n", err);
return CMD_RET_FAILURE;
}
printf("Found parent key %08x\n", parent_handle);
err = tpm1_load_key2_oiap(dev, parent_handle, key, key_len, usage_auth,
&key_handle);
if (!err) {
printf("Key handle is 0x%x\n", key_handle);
env_set_hex("key_handle", key_handle);
}
return report_return_code(err);
}
#endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
static int do_tpm_load_key2_oiap(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 parent_handle, key_len, key_handle, err;
u8 usage_auth[DIGEST_LENGTH];
void *key;
struct udevice *dev;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc < 5)
return CMD_RET_USAGE;
parent_handle = simple_strtoul(argv[1], NULL, 0);
key = (void *)simple_strtoul(argv[2], NULL, 0);
key_len = simple_strtoul(argv[3], NULL, 0);
if (strlen(argv[4]) != 2 * DIGEST_LENGTH)
return CMD_RET_FAILURE;
parse_byte_string(argv[4], usage_auth, NULL);
err = tpm1_load_key2_oiap(dev, parent_handle, key, key_len, usage_auth,
&key_handle);
if (!err)
printf("Key handle is 0x%x\n", key_handle);
return report_return_code(err);
}
static int do_tpm_get_pub_key_oiap(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 key_handle, err;
u8 usage_auth[DIGEST_LENGTH];
u8 pub_key_buffer[TPM_PUBKEY_MAX_LENGTH];
size_t pub_key_len = sizeof(pub_key_buffer);
struct udevice *dev;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc < 3)
return CMD_RET_USAGE;
key_handle = simple_strtoul(argv[1], NULL, 0);
if (strlen(argv[2]) != 2 * DIGEST_LENGTH)
return CMD_RET_FAILURE;
parse_byte_string(argv[2], usage_auth, NULL);
err = tpm1_get_pub_key_oiap(dev, key_handle, usage_auth, pub_key_buffer,
&pub_key_len);
if (!err) {
printf("dump of received pub key structure:\n");
print_byte_string(pub_key_buffer, pub_key_len);
}
return report_return_code(err);
}
TPM_COMMAND_NO_ARG(tpm1_end_oiap)
#endif /* CONFIG_TPM_AUTH_SESSIONS */
#ifdef CONFIG_TPM_FLUSH_RESOURCES
static int do_tpm_flush(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
int type = 0;
int rc;
rc = get_tpm(&dev);
if (rc)
return rc;
if (argc != 3)
return CMD_RET_USAGE;
if (!strcasecmp(argv[1], "key"))
type = TPM_RT_KEY;
else if (!strcasecmp(argv[1], "auth"))
type = TPM_RT_AUTH;
else if (!strcasecmp(argv[1], "hash"))
type = TPM_RT_HASH;
else if (!strcasecmp(argv[1], "trans"))
type = TPM_RT_TRANS;
else if (!strcasecmp(argv[1], "context"))
type = TPM_RT_CONTEXT;
else if (!strcasecmp(argv[1], "counter"))
type = TPM_RT_COUNTER;
else if (!strcasecmp(argv[1], "delegate"))
type = TPM_RT_DELEGATE;
else if (!strcasecmp(argv[1], "daa_tpm"))
type = TPM_RT_DAA_TPM;
else if (!strcasecmp(argv[1], "daa_v0"))
type = TPM_RT_DAA_V0;
else if (!strcasecmp(argv[1], "daa_v1"))
type = TPM_RT_DAA_V1;
if (!type) {
printf("Resource type %s unknown.\n", argv[1]);
return -1;
}
if (!strcasecmp(argv[2], "all")) {
u16 res_count;
u8 buf[288];
u8 *ptr;
int err;
uint i;
/* fetch list of already loaded resources in the TPM */
err = tpm_get_capability(dev, TPM_CAP_HANDLE, type, buf,
sizeof(buf));
if (err) {
printf("tpm_get_capability returned error %d.\n", err);
return -1;
}
res_count = get_unaligned_be16(buf);
ptr = buf + 2;
for (i = 0; i < res_count; ++i, ptr += 4)
tpm1_flush_specific(dev, get_unaligned_be32(ptr), type);
} else {
u32 handle = simple_strtoul(argv[2], NULL, 0);
if (!handle) {
printf("Illegal resource handle %s\n", argv[2]);
return -1;
}
tpm1_flush_specific(dev, cpu_to_be32(handle), type);
}
return 0;
}
#endif /* CONFIG_TPM_FLUSH_RESOURCES */
#ifdef CONFIG_TPM_LIST_RESOURCES
static int do_tpm_list(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
int type = 0;
u16 res_count;
u8 buf[288];
u8 *ptr;
int err;
uint i;
err = get_tpm(&dev);
if (err)
return err;
if (argc != 2)
return CMD_RET_USAGE;
if (!strcasecmp(argv[1], "key"))
type = TPM_RT_KEY;
else if (!strcasecmp(argv[1], "auth"))
type = TPM_RT_AUTH;
else if (!strcasecmp(argv[1], "hash"))
type = TPM_RT_HASH;
else if (!strcasecmp(argv[1], "trans"))
type = TPM_RT_TRANS;
else if (!strcasecmp(argv[1], "context"))
type = TPM_RT_CONTEXT;
else if (!strcasecmp(argv[1], "counter"))
type = TPM_RT_COUNTER;
else if (!strcasecmp(argv[1], "delegate"))
type = TPM_RT_DELEGATE;
else if (!strcasecmp(argv[1], "daa_tpm"))
type = TPM_RT_DAA_TPM;
else if (!strcasecmp(argv[1], "daa_v0"))
type = TPM_RT_DAA_V0;
else if (!strcasecmp(argv[1], "daa_v1"))
type = TPM_RT_DAA_V1;
if (!type) {
printf("Resource type %s unknown.\n", argv[1]);
return -1;
}
/* fetch list of already loaded resources in the TPM */
err = tpm_get_capability(dev, TPM_CAP_HANDLE, type, buf,
sizeof(buf));
if (err) {
printf("tpm_get_capability returned error %d.\n", err);
return -1;
}
res_count = get_unaligned_be16(buf);
ptr = buf + 2;
printf("Resources of type %s (%02x):\n", argv[1], type);
if (!res_count) {
puts("None\n");
} else {
for (i = 0; i < res_count; ++i, ptr += 4)
printf("Index %d: %08x\n", i, get_unaligned_be32(ptr));
}
return 0;
}
#endif /* CONFIG_TPM_LIST_RESOURCES */
TPM_COMMAND_NO_ARG(tpm_self_test_full)
TPM_COMMAND_NO_ARG(tpm_continue_self_test)
TPM_COMMAND_NO_ARG(tpm_force_clear)
TPM_COMMAND_NO_ARG(tpm_physical_enable)
TPM_COMMAND_NO_ARG(tpm_physical_disable)
static struct cmd_tbl tpm1_commands[] = {
U_BOOT_CMD_MKENT(device, 0, 1, do_tpm_device, "", ""),
U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""),
U_BOOT_CMD_MKENT(init, 0, 1, do_tpm_autostart, "", ""),
U_BOOT_CMD_MKENT(init, 0, 1, do_tpm_init, "", ""),
U_BOOT_CMD_MKENT(startup, 0, 1,
do_tpm_startup, "", ""),
U_BOOT_CMD_MKENT(self_test_full, 0, 1,
do_tpm_self_test_full, "", ""),
U_BOOT_CMD_MKENT(continue_self_test, 0, 1,
do_tpm_continue_self_test, "", ""),
U_BOOT_CMD_MKENT(force_clear, 0, 1,
do_tpm_force_clear, "", ""),
U_BOOT_CMD_MKENT(physical_enable, 0, 1,
do_tpm_physical_enable, "", ""),
U_BOOT_CMD_MKENT(physical_disable, 0, 1,
do_tpm_physical_disable, "", ""),
U_BOOT_CMD_MKENT(nv_define_space, 0, 1,
do_tpm_nv_define_space, "", ""),
U_BOOT_CMD_MKENT(nv_read_value, 0, 1,
do_tpm_nv_read_value, "", ""),
U_BOOT_CMD_MKENT(nv_write_value, 0, 1,
do_tpm_nv_write_value, "", ""),
U_BOOT_CMD_MKENT(extend, 0, 1,
do_tpm_extend, "", ""),
U_BOOT_CMD_MKENT(pcr_read, 0, 1,
do_tpm_pcr_read, "", ""),
U_BOOT_CMD_MKENT(tsc_physical_presence, 0, 1,
do_tpm_tsc_physical_presence, "", ""),
U_BOOT_CMD_MKENT(read_pubek, 0, 1,
do_tpm_read_pubek, "", ""),
U_BOOT_CMD_MKENT(physical_set_deactivated, 0, 1,
do_tpm_physical_set_deactivated, "", ""),
U_BOOT_CMD_MKENT(get_capability, 0, 1,
do_tpm_get_capability, "", ""),
U_BOOT_CMD_MKENT(raw_transfer, 0, 1,
do_tpm_raw_transfer, "", ""),
U_BOOT_CMD_MKENT(nv_define, 0, 1,
do_tpm_nv_define, "", ""),
U_BOOT_CMD_MKENT(nv_read, 0, 1,
do_tpm_nv_read, "", ""),
U_BOOT_CMD_MKENT(nv_write, 0, 1,
do_tpm_nv_write, "", ""),
#ifdef CONFIG_TPM_AUTH_SESSIONS
U_BOOT_CMD_MKENT(oiap, 0, 1,
do_tpm_oiap, "", ""),
U_BOOT_CMD_MKENT(end_oiap, 0, 1,
do_tpm1_end_oiap, "", ""),
U_BOOT_CMD_MKENT(load_key2_oiap, 0, 1,
do_tpm_load_key2_oiap, "", ""),
#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
U_BOOT_CMD_MKENT(load_key_by_sha1, 0, 1,
do_tpm_load_key_by_sha1, "", ""),
#endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
U_BOOT_CMD_MKENT(get_pub_key_oiap, 0, 1,
do_tpm_get_pub_key_oiap, "", ""),
#endif /* CONFIG_TPM_AUTH_SESSIONS */
#ifdef CONFIG_TPM_FLUSH_RESOURCES
U_BOOT_CMD_MKENT(flush, 0, 1,
do_tpm_flush, "", ""),
#endif /* CONFIG_TPM_FLUSH_RESOURCES */
#ifdef CONFIG_TPM_LIST_RESOURCES
U_BOOT_CMD_MKENT(list, 0, 1,
do_tpm_list, "", ""),
#endif /* CONFIG_TPM_LIST_RESOURCES */
};
struct cmd_tbl *get_tpm1_commands(unsigned int *size)
{
*size = ARRAY_SIZE(tpm1_commands);
return tpm1_commands;
}
U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm,
"Issue a TPMv1.x command",
"cmd args...\n"
" - Issue TPM command <cmd> with arguments <args...>.\n"
"Admin Startup and State Commands:\n"
" device [num device]\n"
" - Show all devices or set the specified device\n"
" info - Show information about the TPM\n"
" autostart\n"
" - Initalize the tpm, perform a Startup(clear) and run a full selftest\n"
" sequence\n"
" init\n"
" - Put TPM into a state where it waits for 'startup' command.\n"
" startup mode\n"
" - Issue TPM_Starup command. <mode> is one of TPM_ST_CLEAR,\n"
" TPM_ST_STATE, and TPM_ST_DEACTIVATED.\n"
"Admin Testing Commands:\n"
" self_test_full\n"
" - Test all of the TPM capabilities.\n"
" continue_self_test\n"
" - Inform TPM that it should complete the self-test.\n"
"Admin Opt-in Commands:\n"
" physical_enable\n"
" - Set the PERMANENT disable flag to FALSE using physical presence as\n"
" authorization.\n"
" physical_disable\n"
" - Set the PERMANENT disable flag to TRUE using physical presence as\n"
" authorization.\n"
" physical_set_deactivated 0|1\n"
" - Set deactivated flag.\n"
"Admin Ownership Commands:\n"
" force_clear\n"
" - Issue TPM_ForceClear command.\n"
" tsc_physical_presence flags\n"
" - Set TPM device's Physical Presence flags to <flags>.\n"
"The Capability Commands:\n"
" get_capability cap_area sub_cap addr count\n"
" - Read <count> bytes of TPM capability indexed by <cap_area> and\n"
" <sub_cap> to memory address <addr>.\n"
#if defined(CONFIG_TPM_FLUSH_RESOURCES) || defined(CONFIG_TPM_LIST_RESOURCES)
"Resource management functions\n"
#endif
#ifdef CONFIG_TPM_FLUSH_RESOURCES
" flush resource_type id\n"
" - flushes a resource of type <resource_type> (may be one of key, auth,\n"
" hash, trans, context, counter, delegate, daa_tpm, daa_v0, daa_v1),\n"
" and id <id> from the TPM. Use an <id> of \"all\" to flush all\n"
" resources of that type.\n"
#endif /* CONFIG_TPM_FLUSH_RESOURCES */
#ifdef CONFIG_TPM_LIST_RESOURCES
" list resource_type\n"
" - lists resources of type <resource_type> (may be one of key, auth,\n"
" hash, trans, context, counter, delegate, daa_tpm, daa_v0, daa_v1),\n"
" contained in the TPM.\n"
#endif /* CONFIG_TPM_LIST_RESOURCES */
#ifdef CONFIG_TPM_AUTH_SESSIONS
"Storage functions\n"
" loadkey2_oiap parent_handle key_addr key_len usage_auth\n"
" - loads a key data from memory address <key_addr>, <key_len> bytes\n"
" into TPM using the parent key <parent_handle> with authorization\n"
" <usage_auth> (20 bytes hex string).\n"
#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
" load_key_by_sha1 parent_hash key_addr key_len usage_auth\n"
" - loads a key data from memory address <key_addr>, <key_len> bytes\n"
" into TPM using the parent hash <parent_hash> (20 bytes hex string)\n"
" with authorization <usage_auth> (20 bytes hex string).\n"
#endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
" get_pub_key_oiap key_handle usage_auth\n"
" - get the public key portion of a loaded key <key_handle> using\n"
" authorization <usage auth> (20 bytes hex string)\n"
#endif /* CONFIG_TPM_AUTH_SESSIONS */
"Endorsement Key Handling Commands:\n"
" read_pubek addr count\n"
" - Read <count> bytes of the public endorsement key to memory\n"
" address <addr>\n"
"Integrity Collection and Reporting Commands:\n"
" extend index digest_hex_string\n"
" - Add a new measurement to a PCR. Update PCR <index> with the 20-bytes\n"
" <digest_hex_string>\n"
" pcr_read index addr count\n"
" - Read <count> bytes from PCR <index> to memory address <addr>.\n"
#ifdef CONFIG_TPM_AUTH_SESSIONS
"Authorization Sessions\n"
" oiap\n"
" - setup an OIAP session\n"
" end_oiap\n"
" - terminates an active OIAP session\n"
#endif /* CONFIG_TPM_AUTH_SESSIONS */
"Non-volatile Storage Commands:\n"
" nv_define_space index permission size\n"
" - Establish a space at index <index> with <permission> of <size> bytes.\n"
" nv_read_value index addr count\n"
" - Read <count> bytes from space <index> to memory address <addr>.\n"
" nv_write_value index addr count\n"
" - Write <count> bytes from memory address <addr> to space <index>.\n"
"Miscellaneous helper functions:\n"
" raw_transfer byte_string\n"
" - Send a byte string <byte_string> to TPM and print the response.\n"
" Non-volatile storage helper functions:\n"
" These helper functions treat a non-volatile space as a non-padded\n"
" sequence of integer values. These integer values are defined by a type\n"
" string, which is a text string of 'bwd' characters: 'b' means a 8-bit\n"
" value, 'w' 16-bit value, 'd' 32-bit value. All helper functions take\n"
" a type string as their first argument.\n"
" nv_define type_string index perm\n"
" - Define a space <index> with permission <perm>.\n"
" nv_read types_string index vars...\n"
" - Read from space <index> to environment variables <vars...>.\n"
" nv_write types_string index values...\n"
" - Write to space <index> from values <values...>.\n"
);
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