Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <crc_byte.h> |
| 4 | #include <spd_bin.h> |
| 5 | #include <spd_cache.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <string.h> |
| 8 | #include <tests/test.h> |
| 9 | #include <tests/lib/spd_cache_data.h> |
| 10 | |
| 11 | struct region_device flash_rdev_rw; |
| 12 | static char *flash_buffer = NULL; |
| 13 | static size_t flash_buffer_size = 0; |
| 14 | |
| 15 | static int setup_spd_cache(void **state) |
| 16 | { |
| 17 | flash_buffer_size = SC_SPD_TOTAL_LEN + SC_CRC_LEN; |
| 18 | flash_buffer = malloc(flash_buffer_size); |
| 19 | |
| 20 | if (flash_buffer == NULL) { |
| 21 | flash_buffer_size = 0; |
| 22 | return -1; |
| 23 | } |
| 24 | |
| 25 | rdev_chain_mem_rw(&flash_rdev_rw, flash_buffer, flash_buffer_size); |
| 26 | return 0; |
| 27 | } |
| 28 | |
| 29 | static int setup_spd_cache_test(void **state) |
| 30 | { |
| 31 | memset(flash_buffer, 0xff, flash_buffer_size); |
| 32 | return 0; |
| 33 | } |
| 34 | |
| 35 | static int teardown_spd_cache(void **state) |
| 36 | { |
| 37 | rdev_chain_mem_rw(&flash_rdev_rw, NULL, 0); |
| 38 | free(flash_buffer); |
| 39 | flash_buffer = NULL; |
| 40 | flash_buffer_size = 0; |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | |
Patrick Georgi | ce55ca2 | 2021-06-09 18:37:42 +0200 | [diff] [blame] | 45 | int fmap_locate_area_as_rdev(const char *name, struct region_device *area) |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 46 | { |
| 47 | return rdev_chain(area, &flash_rdev_rw, 0, flash_buffer_size); |
| 48 | } |
| 49 | |
| 50 | /* This test verifies if load_spd_cache() correctly loads spd_cache pointer and size |
Patrick Georgi | ce55ca2 | 2021-06-09 18:37:42 +0200 | [diff] [blame] | 51 | from provided region_device. Memory region device is returned by our |
| 52 | fmap_locate_area_as_rdev() override. */ |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 53 | static void test_load_spd_cache(void **state) |
| 54 | { |
| 55 | uint8_t *spd_cache; |
| 56 | size_t spd_cache_sz; |
| 57 | |
| 58 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 59 | assert_ptr_equal(flash_buffer, spd_cache); |
| 60 | assert_int_equal(SC_SPD_TOTAL_LEN + SC_CRC_LEN, spd_cache_sz); |
| 61 | } |
| 62 | |
| 63 | static void calc_spd_cache_crc(uint8_t *spd_cache) |
| 64 | { |
| 65 | *(uint16_t *)(spd_cache + SC_CRC_OFFSET) = |
| 66 | CRC(spd_cache, SC_SPD_TOTAL_LEN, crc16_byte); |
| 67 | } |
| 68 | |
| 69 | __attribute__((unused)) |
| 70 | static void fill_spd_cache_ddr3(uint8_t *spd_cache, size_t spd_cache_sz) |
| 71 | { |
| 72 | assert_true(spd_cache_sz >= (spd_data_ddr3_1_sz + sizeof(uint16_t))); |
| 73 | |
| 74 | memcpy(spd_cache, spd_data_ddr3_1, spd_data_ddr3_1_sz); |
| 75 | memset(spd_cache + spd_data_ddr3_1_sz, 0, spd_cache_sz - spd_data_ddr3_1_sz); |
| 76 | calc_spd_cache_crc(spd_cache); |
| 77 | } |
| 78 | |
| 79 | __attribute__((unused)) |
| 80 | static void fill_spd_cache_ddr4(uint8_t *spd_cache, size_t spd_cache_sz) |
| 81 | { |
| 82 | assert_true(spd_cache_sz >= |
| 83 | (spd_data_ddr4_1_sz + spd_data_ddr4_2_sz + sizeof(uint16_t))); |
| 84 | |
| 85 | memcpy(spd_cache, spd_data_ddr4_1, spd_data_ddr4_1_sz); |
| 86 | memcpy(spd_cache + spd_data_ddr4_1_sz, spd_data_ddr4_2, spd_data_ddr4_2_sz); |
| 87 | memset(spd_cache + spd_data_ddr4_1_sz + spd_data_ddr4_2_sz, 0, |
| 88 | spd_cache_sz - (spd_data_ddr4_1_sz + spd_data_ddr4_2_sz)); |
| 89 | calc_spd_cache_crc(spd_cache); |
| 90 | } |
| 91 | |
| 92 | static void test_spd_fill_from_cache(void **state) |
| 93 | { |
| 94 | struct spd_block blk; |
| 95 | uint8_t *spd_cache; |
| 96 | size_t spd_cache_sz; |
| 97 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 98 | |
| 99 | /* Empty spd cache */ |
| 100 | assert_int_equal(CB_ERR, spd_fill_from_cache(spd_cache, &blk)); |
| 101 | |
| 102 | #if __TEST_SPD_CACHE_DDR == 3 |
| 103 | fill_spd_cache_ddr3(spd_cache, spd_cache_sz); |
| 104 | #elif __TEST_SPD_CACHE_DDR == 4 |
| 105 | fill_spd_cache_ddr4(spd_cache, spd_cache_sz); |
| 106 | #endif |
| 107 | assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk)); |
| 108 | } |
| 109 | |
| 110 | |
| 111 | static void test_spd_cache_is_valid(void **state) |
| 112 | { |
| 113 | uint8_t *spd_cache; |
| 114 | size_t spd_cache_sz; |
| 115 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 116 | |
| 117 | /* Empty, incorrect SPD */ |
| 118 | assert_false(spd_cache_is_valid(spd_cache, spd_cache_sz)); |
| 119 | |
| 120 | #if __TEST_SPD_CACHE_DDR == 3 |
| 121 | fill_spd_cache_ddr3(spd_cache, spd_cache_sz); |
| 122 | #elif __TEST_SPD_CACHE_DDR == 4 |
| 123 | fill_spd_cache_ddr4(spd_cache, spd_cache_sz); |
| 124 | #endif |
| 125 | assert_true(spd_cache_is_valid(spd_cache, spd_cache_sz)); |
| 126 | } |
| 127 | |
| 128 | |
| 129 | /* Used for setting `sn` parameter value */ |
| 130 | static u32 get_spd_sn_ret_sn[SC_SPD_NUMS] = { 0 }; |
| 131 | static size_t get_spd_sn_ret_sn_idx = 0; |
| 132 | /* Implementation for testing purposes. */ |
| 133 | enum cb_err get_spd_sn(u8 addr, u32 *sn) |
| 134 | { |
| 135 | *sn = get_spd_sn_ret_sn[get_spd_sn_ret_sn_idx]; |
| 136 | get_spd_sn_ret_sn_idx = (get_spd_sn_ret_sn_idx + 1) % ARRAY_SIZE(get_spd_sn_ret_sn); |
| 137 | |
| 138 | return mock_type(enum cb_err); |
| 139 | } |
| 140 | |
| 141 | static void get_sn_from_spd_cache(uint8_t *spd_cache, u32 arr[]) |
| 142 | { |
| 143 | for (int i = 0; i < SC_SPD_NUMS; ++i) |
| 144 | arr[i] = *(u32 *)(spd_cache + SC_SPD_OFFSET(i) + DDR4_SPD_SN_OFF); |
| 145 | } |
| 146 | |
| 147 | /* check_if_dimm_changed() has is used only with DDR4, so there tests are not used for DDR3 */ |
| 148 | __attribute__((unused)) |
| 149 | static void test_check_if_dimm_changed_not_changed(void **state) |
| 150 | { |
| 151 | uint8_t *spd_cache; |
| 152 | size_t spd_cache_sz; |
Jakub Czapiga | d5433af | 2021-05-17 10:53:22 +0200 | [diff] [blame] | 153 | struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 }; |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 154 | |
| 155 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 156 | fill_spd_cache_ddr4(spd_cache, spd_cache_sz); |
| 157 | assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk)); |
| 158 | |
| 159 | get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn); |
| 160 | get_spd_sn_ret_sn_idx = 0; |
| 161 | will_return_count(get_spd_sn, CB_SUCCESS, SC_SPD_NUMS); |
| 162 | assert_false(check_if_dimm_changed(spd_cache, &blk)); |
| 163 | } |
| 164 | |
| 165 | __attribute__((unused)) |
| 166 | static void test_check_if_dimm_changed_sn_error(void **state) |
| 167 | { |
| 168 | uint8_t *spd_cache; |
| 169 | size_t spd_cache_sz; |
Jakub Czapiga | d5433af | 2021-05-17 10:53:22 +0200 | [diff] [blame] | 170 | struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 }; |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 171 | |
| 172 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 173 | fill_spd_cache_ddr4(spd_cache, spd_cache_sz); |
| 174 | assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk)); |
| 175 | |
| 176 | /* Simulate error */ |
| 177 | will_return_count(get_spd_sn, CB_ERR, 1); |
| 178 | assert_true(check_if_dimm_changed(spd_cache, &blk)); |
| 179 | } |
| 180 | |
| 181 | __attribute__((unused)) |
| 182 | static void test_check_if_dimm_changed_sodimm_lost(void **state) |
| 183 | { |
| 184 | uint8_t *spd_cache; |
| 185 | size_t spd_cache_sz; |
Jakub Czapiga | d5433af | 2021-05-17 10:53:22 +0200 | [diff] [blame] | 186 | struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 }; |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 187 | |
| 188 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 189 | fill_spd_cache_ddr4(spd_cache, spd_cache_sz); |
| 190 | assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk)); |
| 191 | get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn); |
| 192 | memset(spd_cache + spd_data_ddr4_1_sz, 0xff, spd_data_ddr4_2_sz); |
| 193 | |
| 194 | get_spd_sn_ret_sn_idx = 0; |
| 195 | will_return_always(get_spd_sn, CB_SUCCESS); |
| 196 | assert_true(check_if_dimm_changed(spd_cache, &blk)); |
| 197 | } |
| 198 | |
| 199 | __attribute__((unused)) |
| 200 | static void test_check_if_dimm_changed_new_sodimm(void **state) |
| 201 | { |
| 202 | uint8_t *spd_cache; |
| 203 | size_t spd_cache_sz; |
Jakub Czapiga | d5433af | 2021-05-17 10:53:22 +0200 | [diff] [blame] | 204 | struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 }; |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 205 | |
| 206 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 207 | fill_spd_cache_ddr4(spd_cache, spd_cache_sz); |
| 208 | assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk)); |
| 209 | get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn); |
| 210 | memcpy(spd_cache + spd_data_ddr4_1_sz + spd_data_ddr4_2_sz, |
| 211 | spd_data_ddr4_2, spd_data_ddr4_2_sz); |
| 212 | |
| 213 | get_spd_sn_ret_sn_idx = 0; |
| 214 | will_return_always(get_spd_sn, CB_SUCCESS); |
| 215 | assert_true(check_if_dimm_changed(spd_cache, &blk)); |
| 216 | } |
| 217 | |
| 218 | __attribute__((unused)) |
| 219 | static void test_check_if_dimm_changed_sn_changed(void **state) |
| 220 | { |
| 221 | uint8_t *spd_cache; |
| 222 | size_t spd_cache_sz; |
Jakub Czapiga | d5433af | 2021-05-17 10:53:22 +0200 | [diff] [blame] | 223 | struct spd_block blk = { .addr_map = {0}, .spd_array = {0}, .len = 0 }; |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 224 | |
| 225 | assert_int_equal(CB_SUCCESS, load_spd_cache(&spd_cache, &spd_cache_sz)); |
| 226 | fill_spd_cache_ddr4(spd_cache, spd_cache_sz); |
| 227 | assert_int_equal(CB_SUCCESS, spd_fill_from_cache(spd_cache, &blk)); |
| 228 | get_sn_from_spd_cache(spd_cache, get_spd_sn_ret_sn); |
| 229 | *(u32 *)(spd_cache + SC_SPD_OFFSET(0) + DDR4_SPD_SN_OFF) = 0x43211234; |
| 230 | |
| 231 | get_spd_sn_ret_sn_idx = 0; |
| 232 | will_return_always(get_spd_sn, CB_SUCCESS); |
| 233 | assert_true(check_if_dimm_changed(spd_cache, &blk)); |
| 234 | } |
| 235 | |
| 236 | int main(void) |
| 237 | { |
| 238 | const struct CMUnitTest tests[] = { |
| 239 | cmocka_unit_test_setup(test_load_spd_cache, setup_spd_cache_test), |
| 240 | cmocka_unit_test_setup(test_spd_fill_from_cache, setup_spd_cache_test), |
| 241 | cmocka_unit_test_setup(test_spd_cache_is_valid, setup_spd_cache_test), |
| 242 | #if __TEST_SPD_CACHE_DDR == 4 |
| 243 | cmocka_unit_test_setup(test_check_if_dimm_changed_not_changed, |
| 244 | setup_spd_cache_test), |
| 245 | cmocka_unit_test_setup(test_check_if_dimm_changed_sn_error, |
| 246 | setup_spd_cache_test), |
| 247 | cmocka_unit_test_setup(test_check_if_dimm_changed_sodimm_lost, |
| 248 | setup_spd_cache_test), |
| 249 | cmocka_unit_test_setup(test_check_if_dimm_changed_new_sodimm, |
| 250 | setup_spd_cache_test), |
| 251 | cmocka_unit_test_setup(test_check_if_dimm_changed_sn_changed, |
| 252 | setup_spd_cache_test), |
| 253 | #endif |
| 254 | }; |
| 255 | |
Jakub Czapiga | 7c6081e | 2021-08-25 16:27:35 +0200 | [diff] [blame] | 256 | return cb_run_group_tests(tests, setup_spd_cache, teardown_spd_cache); |
Jakub Czapiga | 2b8d721 | 2021-04-22 20:14:02 +0200 | [diff] [blame] | 257 | } |