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/* SPDX-License-Identifier: GPL-2.0-only */
#include <crc_byte.h>
#include <spd_bin.h>
#include <spd_cache.h>
#include <stdlib.h>
#include <string.h>
#include <tests/test.h>
#include <tests/lib/spd_cache_data.h>
struct region_device flash_rdev_rw;
static char *flash_buffer = NULL;
static size_t flash_buffer_size = 0;
static int setup_spd_cache(void **state)
{
flash_buffer_size = SC_SPD_TOTAL_LEN + SC_CRC_LEN;
flash_buffer = malloc(flash_buffer_size);
if (flash_buffer == NULL) {
flash_buffer_size = 0;
return -1;
}
rdev_chain_mem_rw(&flash_rdev_rw, flash_buffer, flash_buffer_size);
return 0;
}
static int setup_spd_cache_test(void **state)
{
memset(flash_buffer, 0xff, flash_buffer_size);
return 0;
}
static int teardown_spd_cache(void **state)
{
rdev_chain_mem_rw(&flash_rdev_rw, NULL, 0);
free(flash_buffer);
flash_buffer = NULL;
flash_buffer_size = 0;
return 0;
}
int fmap_locate_area_as_rdev(const char *name, struct region_device *area)
{
return rdev_chain(area, &flash_rdev_rw, 0, flash_buffer_size);
}
/* This test verifies if load_spd_cache() correctly loads spd_cache pointer and size
from provided region_device. Memory region device is returned by our
fmap_locate_area_as_rdev() override. */
static void test_load_spd_cache(void **state)
{
uint8_t *spd_cache;
size_t spd_cache_sz;
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
assert_ptr_equal(flash_buffer, spd_cache);
assert_int_equal(SC_SPD_TOTAL_LEN + SC_CRC_LEN, spd_cache_sz);
}
static void calc_spd_cache_crc(uint8_t *spd_cache)
{
*(uint16_t *)(spd_cache + SC_CRC_OFFSET) =
CRC(spd_cache, SC_SPD_TOTAL_LEN, crc16_byte);
}
__attribute__((unused))
static void fill_spd_cache_ddr3(uint8_t *spd_cache, size_t spd_cache_sz)
{
assert_true(spd_cache_sz >= (spd_data_ddr3_1_sz + sizeof(uint16_t)));
memcpy(spd_cache, spd_data_ddr3_1, spd_data_ddr3_1_sz);
memset(spd_cache + spd_data_ddr3_1_sz, 0, spd_cache_sz - spd_data_ddr3_1_sz);
calc_spd_cache_crc(spd_cache);
}
__attribute__((unused))
static void fill_spd_cache_ddr4(uint8_t *spd_cache, size_t spd_cache_sz)
{
assert_true(spd_cache_sz >=
(spd_data_ddr4_1_sz + spd_data_ddr4_2_sz + sizeof(uint16_t)));
memcpy(spd_cache, spd_data_ddr4_1, spd_data_ddr4_1_sz);
memcpy(spd_cache + spd_data_ddr4_1_sz, spd_data_ddr4_2, spd_data_ddr4_2_sz);
memset(spd_cache + spd_data_ddr4_1_sz + spd_data_ddr4_2_sz, 0,
spd_cache_sz - (spd_data_ddr4_1_sz + spd_data_ddr4_2_sz));
calc_spd_cache_crc(spd_cache);
}
static void test_spd_fill_from_cache(void **state)
{
struct spd_block blk;
uint8_t *spd_cache;
size_t spd_cache_sz;
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
/* Empty spd cache */
assert_int_equal(CB_ERR, spd_fill_from_cache(spd_cache, &blk));
#if __TEST_SPD_CACHE_DDR == 3
fill_spd_cache_ddr3(spd_cache, spd_cache_sz);
#elif __TEST_SPD_CACHE_DDR == 4
fill_spd_cache_ddr4(spd_cache, spd_cache_sz);
#endif
assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk));
}
static void test_spd_cache_is_valid(void **state)
{
uint8_t *spd_cache;
size_t spd_cache_sz;
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
/* Empty, incorrect SPD */
assert_false(spd_cache_is_valid(spd_cache, spd_cache_sz));
#if __TEST_SPD_CACHE_DDR == 3
fill_spd_cache_ddr3(spd_cache, spd_cache_sz);
#elif __TEST_SPD_CACHE_DDR == 4
fill_spd_cache_ddr4(spd_cache, spd_cache_sz);
#endif
assert_true(spd_cache_is_valid(spd_cache, spd_cache_sz));
}
/* Used for setting `sn` parameter value */
static u32 get_spd_sn_ret_sn[SC_SPD_NUMS] = { 0 };
static size_t get_spd_sn_ret_sn_idx = 0;
/* Implementation for testing purposes. */
enum cb_err get_spd_sn(u8 addr, u32 *sn)
{
*sn = get_spd_sn_ret_sn[get_spd_sn_ret_sn_idx];
get_spd_sn_ret_sn_idx = (get_spd_sn_ret_sn_idx + 1) % ARRAY_SIZE(get_spd_sn_ret_sn);
return mock_type(enum cb_err);
}
static void get_sn_from_spd_cache(uint8_t *spd_cache, u32 arr[])
{
for (int i = 0; i < SC_SPD_NUMS; ++i)
arr[i] = *(u32 *)(spd_cache + SC_SPD_OFFSET(i) + DDR4_SPD_SN_OFF);
}
/* check_if_dimm_changed() has is used only with DDR4, so there tests are not used for DDR3 */
__attribute__((unused))
static void test_check_if_dimm_changed_not_changed(void **state)
{
uint8_t *spd_cache;
size_t spd_cache_sz;
struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 };
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
fill_spd_cache_ddr4(spd_cache, spd_cache_sz);
assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk));
get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn);
get_spd_sn_ret_sn_idx = 0;
will_return_count(get_spd_sn, CB_SUCCESS, SC_SPD_NUMS);
assert_false(check_if_dimm_changed(spd_cache, &blk));
}
__attribute__((unused))
static void test_check_if_dimm_changed_sn_error(void **state)
{
uint8_t *spd_cache;
size_t spd_cache_sz;
struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 };
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
fill_spd_cache_ddr4(spd_cache, spd_cache_sz);
assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk));
/* Simulate error */
will_return_count(get_spd_sn, CB_ERR, 1);
assert_true(check_if_dimm_changed(spd_cache, &blk));
}
__attribute__((unused))
static void test_check_if_dimm_changed_sodimm_lost(void **state)
{
uint8_t *spd_cache;
size_t spd_cache_sz;
struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 };
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
fill_spd_cache_ddr4(spd_cache, spd_cache_sz);
assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk));
get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn);
memset(spd_cache + spd_data_ddr4_1_sz, 0xff, spd_data_ddr4_2_sz);
get_spd_sn_ret_sn_idx = 0;
will_return_always(get_spd_sn, CB_SUCCESS);
assert_true(check_if_dimm_changed(spd_cache, &blk));
}
__attribute__((unused))
static void test_check_if_dimm_changed_new_sodimm(void **state)
{
uint8_t *spd_cache;
size_t spd_cache_sz;
struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 };
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
fill_spd_cache_ddr4(spd_cache, spd_cache_sz);
assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk));
get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn);
memcpy(spd_cache + spd_data_ddr4_1_sz + spd_data_ddr4_2_sz,
spd_data_ddr4_2, spd_data_ddr4_2_sz);
get_spd_sn_ret_sn_idx = 0;
will_return_always(get_spd_sn, CB_SUCCESS);
assert_true(check_if_dimm_changed(spd_cache, &blk));
}
__attribute__((unused))
static void test_check_if_dimm_changed_sn_changed(void **state)
{
uint8_t *spd_cache;
size_t spd_cache_sz;
struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 };
assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz));
fill_spd_cache_ddr4(spd_cache, spd_cache_sz);
assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk));
get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn);
*(u32 *)(spd_cache + SC_SPD_OFFSET(0) + DDR4_SPD_SN_OFF) = 0x43211234;
get_spd_sn_ret_sn_idx = 0;
will_return_always(get_spd_sn, CB_SUCCESS);
assert_true(check_if_dimm_changed(spd_cache, &blk));
}
int main(void)
{
const struct CMUnitTest tests[] = {
cmocka_unit_test_setup(test_load_spd_cache, setup_spd_cache_test),
cmocka_unit_test_setup(test_spd_fill_from_cache, setup_spd_cache_test),
cmocka_unit_test_setup(test_spd_cache_is_valid, setup_spd_cache_test),
#if __TEST_SPD_CACHE_DDR == 4
cmocka_unit_test_setup(test_check_if_dimm_changed_not_changed,
setup_spd_cache_test),
cmocka_unit_test_setup(test_check_if_dimm_changed_sn_error,
setup_spd_cache_test),
cmocka_unit_test_setup(test_check_if_dimm_changed_sodimm_lost,
setup_spd_cache_test),
cmocka_unit_test_setup(test_check_if_dimm_changed_new_sodimm,
setup_spd_cache_test),
cmocka_unit_test_setup(test_check_if_dimm_changed_sn_changed,
setup_spd_cache_test),
#endif
};
return cmocka_run_group_tests(tests, setup_spd_cache, teardown_spd_cache);
}
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