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/*
* Copyright (c) 2022, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
#include <string.h>
#include <common/debug.h>
#include <measured_boot.h>
#include <psa/client.h>
#include <psa_manifest/sid.h>
#include "measured_boot_private.h"
static void print_byte_array(const uint8_t *array __unused, size_t len __unused)
{
#if LOG_LEVEL >= LOG_LEVEL_INFO
size_t i;
if (array == NULL || len == 0U) {
(void)printf("\n");
} else {
for (i = 0U; i < len; ++i) {
(void)printf(" %02x", array[i]);
if ((i & U(0xF)) == U(0xF)) {
(void)printf("\n");
if (i < (len - 1U)) {
INFO("\t\t:");
}
}
}
}
#endif
}
static void log_measurement(uint8_t index,
const uint8_t *signer_id,
size_t signer_id_size,
const uint8_t *version, /* string */
size_t version_size,
const uint8_t *sw_type, /* string */
size_t sw_type_size,
uint32_t measurement_algo,
const uint8_t *measurement_value,
size_t measurement_value_size,
bool lock_measurement)
{
INFO("Measured boot extend measurement:\n");
INFO(" - slot : %u\n", index);
INFO(" - signer_id :");
print_byte_array(signer_id, signer_id_size);
INFO(" - version : %s\n", version);
INFO(" - version_size: %zu\n", version_size);
INFO(" - sw_type : %s\n", sw_type);
INFO(" - sw_type_size: %zu\n", sw_type_size);
INFO(" - algorithm : %x\n", measurement_algo);
INFO(" - measurement :");
print_byte_array(measurement_value, measurement_value_size);
INFO(" - locking : %s\n", lock_measurement ? "true" : "false");
}
#if !PLAT_RSS_NOT_SUPPORTED
psa_status_t
rss_measured_boot_extend_measurement(uint8_t index,
const uint8_t *signer_id,
size_t signer_id_size,
const uint8_t *version,
size_t version_size,
uint32_t measurement_algo,
const uint8_t *sw_type,
size_t sw_type_size,
const uint8_t *measurement_value,
size_t measurement_value_size,
bool lock_measurement)
{
struct measured_boot_extend_iovec_t extend_iov = {
.index = index,
.lock_measurement = lock_measurement,
.measurement_algo = measurement_algo,
.sw_type = {0},
.sw_type_size = sw_type_size,
};
if (version_size > VERSION_MAX_SIZE) {
return PSA_ERROR_INVALID_ARGUMENT;
}
if (version_size > 0 && version[version_size - 1] == '\0') {
version_size--;
}
psa_invec in_vec[] = {
{.base = &extend_iov,
.len = sizeof(struct measured_boot_extend_iovec_t)},
{.base = signer_id, .len = signer_id_size},
{.base = version, .len = version_size },
{.base = measurement_value, .len = measurement_value_size}
};
if (sw_type != NULL) {
if (extend_iov.sw_type_size > SW_TYPE_MAX_SIZE) {
return PSA_ERROR_INVALID_ARGUMENT;
}
if (sw_type_size > 0 && sw_type[sw_type_size - 1] == '\0') {
extend_iov.sw_type_size--;
}
memcpy(extend_iov.sw_type, sw_type, extend_iov.sw_type_size);
}
log_measurement(index, signer_id, signer_id_size,
version, version_size, sw_type, sw_type_size,
measurement_algo, measurement_value,
measurement_value_size, lock_measurement);
return psa_call(RSS_MEASURED_BOOT_HANDLE,
RSS_MEASURED_BOOT_EXTEND,
in_vec, IOVEC_LEN(in_vec),
NULL, 0);
}
psa_status_t rss_measured_boot_read_measurement(uint8_t index,
uint8_t *signer_id,
size_t signer_id_size,
size_t *signer_id_len,
uint8_t *version,
size_t version_size,
size_t *version_len,
uint32_t *measurement_algo,
uint8_t *sw_type,
size_t sw_type_size,
size_t *sw_type_len,
uint8_t *measurement_value,
size_t measurement_value_size,
size_t *measurement_value_len,
bool *is_locked)
{
psa_status_t status;
struct measured_boot_read_iovec_in_t read_iov_in = {
.index = index,
.sw_type_size = sw_type_size,
.version_size = version_size,
};
struct measured_boot_read_iovec_out_t read_iov_out;
psa_invec in_vec[] = {
{.base = &read_iov_in,
.len = sizeof(struct measured_boot_read_iovec_in_t)},
};
psa_outvec out_vec[] = {
{.base = &read_iov_out,
.len = sizeof(struct measured_boot_read_iovec_out_t)},
{.base = signer_id, .len = signer_id_size},
{.base = measurement_value, .len = measurement_value_size}
};
status = psa_call(RSS_MEASURED_BOOT_HANDLE, RSS_MEASURED_BOOT_READ,
in_vec, IOVEC_LEN(in_vec),
out_vec, IOVEC_LEN(out_vec));
if (status == PSA_SUCCESS) {
*is_locked = read_iov_out.is_locked;
*measurement_algo = read_iov_out.measurement_algo;
*sw_type_len = read_iov_out.sw_type_len;
*version_len = read_iov_out.version_len;
memcpy(sw_type, read_iov_out.sw_type, read_iov_out.sw_type_len);
memcpy(version, read_iov_out.version, read_iov_out.version_len);
*signer_id_len = out_vec[1].len;
*measurement_value_len = out_vec[2].len;
}
return status;
}
#else /* !PLAT_RSS_NOT_SUPPORTED */
psa_status_t
rss_measured_boot_extend_measurement(uint8_t index,
const uint8_t *signer_id,
size_t signer_id_size,
const uint8_t *version,
size_t version_size,
uint32_t measurement_algo,
const uint8_t *sw_type,
size_t sw_type_size,
const uint8_t *measurement_value,
size_t measurement_value_size,
bool lock_measurement)
{
log_measurement(index, signer_id, signer_id_size,
version, version_size, sw_type, sw_type_size,
measurement_algo, measurement_value,
measurement_value_size, lock_measurement);
return PSA_SUCCESS;
}
psa_status_t rss_measured_boot_read_measurement(uint8_t index,
uint8_t *signer_id,
size_t signer_id_size,
size_t *signer_id_len,
uint8_t *version,
size_t version_size,
size_t *version_len,
uint32_t *measurement_algo,
uint8_t *sw_type,
size_t sw_type_size,
size_t *sw_type_len,
uint8_t *measurement_value,
size_t measurement_value_size,
size_t *measurement_value_len,
bool *is_locked)
{
return PSA_SUCCESS;
}
#endif /* !PLAT_RSS_NOT_SUPPORTED */
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