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u-boot/cmd/tpm-v1.c
Miquel Raynal 2a2096ea60 tpm: allow TPM v1 and v2 to be compiled at the same time 
While there is probably no reason to do so in a real life situation, it
will allow to compile test both stacks with the same sandbox defconfig.

As we cannot define two 'tpm' commands at the same time, the command for
TPM v1 is still called 'tpm' and the one for TPM v2 'tpm2'. While this
is the exact command name that must be written into eg. test files, any
user already using the TPM v2 stack can continue to do so by just writing
'tpm' because as long as TPM v1 support is not compiled, U-Boot prompt
will search for the closest command named after 'tpm'.

The command set can also be changed at runtime (not supported yet, but
ready to be), but as one can compile only either one stack or the other,
there is still one spot in the code where conditionals are used: to
retrieve the v1 or v2 command set.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: In sandbox_tpm2_fill_buf() use NULL not \0 to ensure NULL
terminated string due to LLVM warning]
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-07-28 11:57:38 -04:00

723 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 The Chromium OS Authors.
*/
#include <common.h>
#include <malloc.h>
#include <asm/unaligned.h>
#include <tpm-common.h>
#include <tpm-v1.h>
#include "tpm-user-utils.h"
static int do_tpm_startup(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
enum tpm_startup_type mode;
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(mode));
}
static int do_tpm_nv_define_space(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, perm, size;
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(tpm_nv_define_space(index, perm, size));
}
static int do_tpm_nv_read_value(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, count, rc;
void *data;
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(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(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, rc;
size_t count;
void *data;
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(index, data, count);
free(data);
return report_return_code(rc);
}
static int do_tpm_extend(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, rc;
u8 in_digest[20], out_digest[20];
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_extend(index, in_digest, out_digest);
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(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, count, rc;
void *data;
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(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(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u16 presence;
if (argc != 2)
return CMD_RET_USAGE;
presence = (u16)simple_strtoul(argv[1], NULL, 0);
return report_return_code(tpm_tsc_physical_presence(presence));
}
static int do_tpm_read_pubek(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 count, rc;
void *data;
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(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(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u8 state;
if (argc != 2)
return CMD_RET_USAGE;
state = (u8)simple_strtoul(argv[1], NULL, 0);
return report_return_code(tpm_physical_set_deactivated(state));
}
static int do_tpm_get_capability(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 cap_area, sub_cap, rc;
void *cap;
size_t count;
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(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(cmd_tbl_t *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(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, perm, size;
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(tpm_nv_define_space(index, perm, size));
}
static int do_tpm_nv_read(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, count, err;
void *data;
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(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(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 index, count, err;
void *data;
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(index, data, count);
free(data);
return report_return_code(err);
}
#ifdef CONFIG_TPM_AUTH_SESSIONS
static int do_tpm_oiap(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 auth_handle, err;
err = tpm_oiap(&auth_handle);
return report_return_code(err);
}
#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
static int do_tpm_load_key_by_sha1(cmd_tbl_t *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;
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 = tpm_find_key_sha1(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 = tpm_load_key2_oiap(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(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 parent_handle, key_len, key_handle, err;
u8 usage_auth[DIGEST_LENGTH];
void *key;
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 = tpm_load_key2_oiap(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(cmd_tbl_t *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);
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 = tpm_get_pub_key_oiap(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(tpm_end_oiap)
#endif /* CONFIG_TPM_AUTH_SESSIONS */
#ifdef CONFIG_TPM_FLUSH_RESOURCES
static int do_tpm_flush(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
int type = 0;
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(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)
tpm_flush_specific(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;
}
tpm_flush_specific(cpu_to_be32(handle), type);
}
return 0;
}
#endif /* CONFIG_TPM_FLUSH_RESOURCES */
#ifdef CONFIG_TPM_LIST_RESOURCES
static int do_tpm_list(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
int type = 0;
u16 res_count;
u8 buf[288];
u8 *ptr;
int err;
uint i;
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(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 cmd_tbl_t tpm1_commands[] = {
U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""),
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_tpm_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 */
};
cmd_tbl_t *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"
" info - Show information about the TPM\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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