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/*
* Test read/write/erase performance of the flash keystore.
*/
#include "string.h"
#include "stm-init.h"
#include "stm-led.h"
#include "stm-uart.h"
#include "stm-keystore.h"
/*
* 1. Read the entire flash by subsectors, ignoring data.
*/
static void test_read_data(void)
{
uint8_t read_buf[KEYSTORE_SUBSECTOR_SIZE];
uint32_t i;
HAL_StatusTypeDef err;
for (i = 0; i < KEYSTORE_NUM_SUBSECTORS; ++i) {
err = keystore_read_data(i * KEYSTORE_SUBSECTOR_SIZE, read_buf, KEYSTORE_SUBSECTOR_SIZE);
if (err != HAL_OK) {
uart_send_string("ERROR: keystore_read_data returned ");
uart_send_integer(err, 1);
uart_send_string("\r\n");
break;
}
}
}
/*
* Read the flash data and verify it against a known pattern.
*/
static void _read_verify(uint8_t *vrfy_buf)
{
uint8_t read_buf[KEYSTORE_SUBSECTOR_SIZE];
uint32_t i;
HAL_StatusTypeDef err;
for (i = 0; i < KEYSTORE_NUM_SUBSECTORS; ++i) {
err = keystore_read_data(i * KEYSTORE_SUBSECTOR_SIZE, read_buf, KEYSTORE_SUBSECTOR_SIZE);
if (err != HAL_OK) {
uart_send_string("ERROR: keystore_read_data returned ");
uart_send_integer(err, 1);
uart_send_string("\r\n");
break;
}
if (memcmp(read_buf, vrfy_buf, KEYSTORE_SUBSECTOR_SIZE) != 0) {
uart_send_string("ERROR: verify failed in subsector ");
uart_send_integer(i, 1);
uart_send_string("\r\n");
break;
}
}
}
/*
* 2a. Erase the entire flash by sectors.
*/
static void test_erase_sector(void)
{
uint32_t i;
HAL_StatusTypeDef err;
for (i = 0; i < KEYSTORE_NUM_SECTORS; ++i) {
err = keystore_erase_sector(i);
if (err != HAL_OK) {
uart_send_string("ERROR: keystore_erase_sector returned ");
uart_send_integer(err, 1);
uart_send_string("\r\n");
break;
}
}
}
/*
* 2b. Erase the entire flash by subsectors.
*/
static void test_erase_subsector(void)
{
uint32_t i;
HAL_StatusTypeDef err;
for (i = 0; i < KEYSTORE_NUM_SUBSECTORS; ++i) {
err = keystore_erase_subsector(i);
if (err != HAL_OK) {
uart_send_string("ERROR: keystore_erase_subsector returned ");
uart_send_integer(err, 1);
uart_send_string("\r\n");
break;
}
}
}
/*
* 2c. Read the entire flash, verify erasure.
*/
static void test_verify_erase(void)
{
uint8_t vrfy_buf[KEYSTORE_SUBSECTOR_SIZE];
uint32_t i;
for (i = 0; i < sizeof(vrfy_buf); ++i)
vrfy_buf[i] = 0xFF;
_read_verify(vrfy_buf);
}
/*
* 3a. Write the entire flash with a pattern.
*/
static void test_write_data(void)
{
uint8_t write_buf[KEYSTORE_SUBSECTOR_SIZE];
uint32_t i;
HAL_StatusTypeDef err;
for (i = 0; i < sizeof(write_buf); ++i)
write_buf[i] = i & 0xFF;
for (i = 0; i < KEYSTORE_NUM_SUBSECTORS; ++i) {
err = keystore_write_data(i * KEYSTORE_SUBSECTOR_SIZE, write_buf, KEYSTORE_SUBSECTOR_SIZE);
if (err != HAL_OK) {
uart_send_string("ERROR: keystore_write_data returned ");
uart_send_integer(err, 1);
uart_send_string(" for subsector ");
uart_send_integer(i, 1);
uart_send_string("\r\n");
break;
}
}
}
/*
* 3b. Read the entire flash, verify data.
*/
static void test_verify_write(void)
{
uint8_t vrfy_buf[KEYSTORE_SUBSECTOR_SIZE];
uint32_t i;
for (i = 0; i < sizeof(vrfy_buf); ++i)
vrfy_buf[i] = i & 0xFF;
_read_verify(vrfy_buf);
}
static void _time_check(char *label, const uint32_t t0, uint32_t n_rounds)
{
uint32_t t = HAL_GetTick() - t0;
uart_send_string(label);
uart_send_integer(t / 1000, 1);
uart_send_char('.');
uart_send_integer(t % 1000, 3);
uart_send_string(" sec");
if (n_rounds > 1) {
uart_send_string(" for ");
uart_send_integer(n_rounds, 1);
uart_send_string(" rounds, ");
uart_send_integer(t / n_rounds, 1);
uart_send_char('.');
uart_send_integer(((t % n_rounds) * 100) / n_rounds, 2);
uart_send_string(" ms each");
}
uart_send_string("\r\n");
}
#define time_check(_label_, _expr_, _n_) \
do { \
uint32_t _t = HAL_GetTick(); \
(_expr_); \
_time_check(_label_, _t, _n_); \
} while (0)
int main(void)
{
stm_init();
if (keystore_check_id() != HAL_OK) {
uart_send_string("ERROR: keystore_check_id failed\r\n");
return 0;
}
uart_send_string("Starting...\r\n");
time_check("read data ", test_read_data(), KEYSTORE_NUM_SUBSECTORS);
time_check("erase subsector ", test_erase_subsector(), KEYSTORE_NUM_SUBSECTORS);
time_check("erase sector ", test_erase_sector(), KEYSTORE_NUM_SECTORS);
time_check("verify erase ", test_verify_erase(), KEYSTORE_NUM_SUBSECTORS);
time_check("write data ", test_write_data(), KEYSTORE_NUM_SUBSECTORS);
time_check("verify write ", test_verify_write(), KEYSTORE_NUM_SUBSECTORS);
uart_send_string("Done.\r\n\r\n");
return 0;
}
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