1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2021 Google LLC
4 * Written by Simon Glass <sjg@chromium.org>
16 #include <dm/uclass-internal.h>
17 #include <test/test.h>
19 #include <u-boot/crc.h>
21 DECLARE_GLOBAL_DATA_PTR;
24 * enum fdtchk_t - what to do with the device tree (gd->fdt_blob)
26 * This affects what happens with the device tree before and after a test
28 * @FDTCHK_NONE: Do nothing
29 * @FDTCHK_CHECKSUM: Take a checksum of the FDT before the test runs and
30 * compare it afterwards to detect any changes
31 * @FDTCHK_COPY: Make a copy of the FDT and restore it afterwards
40 * fdt_action() - get the required action for the FDT
42 * @return the action that should be taken for this build
44 static enum fdtchk_t fdt_action(void)
46 /* Do a copy for sandbox (but only the U-Boot build, not SPL) */
47 if (CONFIG_IS_ENABLED(SANDBOX))
50 /* For sandbox SPL builds, do nothing */
51 if (IS_ENABLED(CONFIG_SANDBOX))
54 /* For all other boards, do a checksum */
55 return FDTCHK_CHECKSUM;
58 /* This is valid when a test is running, NULL otherwise */
59 static struct unit_test_state *cur_test_state;
61 struct unit_test_state *test_get_state(void)
63 return cur_test_state;
66 void test_set_state(struct unit_test_state *uts)
72 * dm_test_pre_run() - Get ready to run a driver model test
74 * This clears out the driver model data structures. For sandbox it resets the
79 static int dm_test_pre_run(struct unit_test_state *uts)
81 bool of_live = uts->of_live;
83 if (of_live && (gd->flags & GD_FLG_FDT_CHANGED)) {
84 printf("Cannot run live tree test as device tree changed\n");
89 uts->force_fail_alloc = false;
90 uts->skip_post_probe = false;
91 if (fdt_action() == FDTCHK_CHECKSUM)
92 uts->fdt_chksum = crc8(0, gd->fdt_blob,
93 fdt_totalsize(gd->fdt_blob));
95 malloc_disable_testing();
96 if (CONFIG_IS_ENABLED(UT_DM) && !CONFIG_IS_ENABLED(OF_PLATDATA))
97 memset(dm_testdrv_op_count, '\0', sizeof(dm_testdrv_op_count));
98 arch_reset_for_test();
100 /* Determine whether to make the live tree available */
101 gd_set_of_root(of_live ? uts->of_root : NULL);
102 ut_assertok(dm_init(of_live));
103 uts->root = dm_root();
108 static int dm_test_post_run(struct unit_test_state *uts)
113 switch (fdt_action()) {
115 memcpy((void *)gd->fdt_blob, uts->fdt_copy, uts->fdt_size);
117 case FDTCHK_CHECKSUM: {
120 chksum = crc8(0, gd->fdt_blob, fdt_totalsize(gd->fdt_blob));
121 if (chksum != uts->fdt_chksum) {
123 * We cannot run any more tests that need the
124 * live tree, since its strings point into the
125 * flat tree, which has changed. This likely
126 * means that at least some of the pointers from
127 * the live tree point to different things
129 printf("Device tree changed: cannot run live tree tests\n");
130 gd->flags |= GD_FLG_FDT_CHANGED;
140 * With of-platdata-inst the uclasses are created at build time. If we
141 * destroy them we cannot get them back since uclass_add() is not
142 * supported. So skip this.
144 if (!CONFIG_IS_ENABLED(OF_PLATDATA_INST)) {
145 for (id = 0; id < UCLASS_COUNT; id++) {
149 * If the uclass doesn't exist we don't want to create
150 * it. So check that here before we call
151 * uclass_find_device().
153 uc = uclass_find(id);
156 ut_assertok(uclass_destroy(uc));
163 /* Ensure all the test devices are probed */
164 static int do_autoprobe(struct unit_test_state *uts)
169 /* Scanning the uclass is enough to probe all the devices */
170 for (ret = uclass_first_device(UCLASS_TEST, &dev);
172 ret = uclass_next_device(&dev))
179 * ut_test_run_on_flattree() - Check if we should run a test with flat DT
181 * This skips long/slow tests where there is not much value in running a flat
182 * DT test in addition to a live DT test.
184 * Return: true to run the given test on the flat device tree
186 static bool ut_test_run_on_flattree(struct unit_test *test)
188 const char *fname = strrchr(test->file, '/') + 1;
190 if (!(test->flags & UT_TESTF_DM))
193 return !strstr(fname, "video") || strstr(test->name, "video_base");
197 * test_matches() - Check if a test should be run
199 * This checks if the a test should be run. In the normal case of running all
200 * tests, @select_name is NULL.
202 * @prefix: String prefix for the tests. Any tests that have this prefix will be
203 * printed without the prefix, so that it is easier to see the unique part
204 * of the test name. If NULL, any suite name (xxx_test) is considered to be
206 * @test_name: Name of current test
207 * @select_name: Name of test to run (or NULL for all)
208 * Return: true to run this test, false to skip it
210 static bool test_matches(const char *prefix, const char *test_name,
211 const char *select_name)
218 /* Allow glob expansion in the test name */
219 len = select_name[strlen(select_name) - 1] == '*' ? strlen(select_name) : 0;
223 if (!strncmp(test_name, select_name, len))
227 /* All tests have this prefix */
228 if (!strncmp(test_name, prefix, strlen(prefix)))
229 test_name += strlen(prefix);
231 const char *p = strstr(test_name, "_test_");
233 /* convert xxx_test_yyy to yyy, i.e. remove the suite name */
235 test_name = p + strlen("_test_");
238 if (!strncmp(test_name, select_name, len))
245 * ut_list_has_dm_tests() - Check if a list of tests has driver model ones
247 * @tests: List of tests to run
248 * @count: Number of tests to ru
249 * Return: true if any of the tests have the UT_TESTF_DM flag
251 static bool ut_list_has_dm_tests(struct unit_test *tests, int count)
253 struct unit_test *test;
255 for (test = tests; test < tests + count; test++) {
256 if (test->flags & UT_TESTF_DM)
264 * dm_test_restore() Put things back to normal so sandbox works as expected
266 * @of_root: Value to set for of_root
267 * Return: 0 if OK, -ve on error
269 static int dm_test_restore(struct device_node *of_root)
273 gd_set_of_root(of_root);
275 ret = dm_init(CONFIG_IS_ENABLED(OF_LIVE));
279 if (!CONFIG_IS_ENABLED(OF_PLATDATA))
286 * test_pre_run() - Handle any preparation needed to run a test
289 * @test: Test to prepare for
290 * Return: 0 if OK, -EAGAIN to skip this test since some required feature is not
291 * available, other -ve on error (meaning that testing cannot likely
294 static int test_pre_run(struct unit_test_state *uts, struct unit_test *test)
296 ut_assertok(event_init());
297 ut_assertok(cyclic_init());
299 if (test->flags & UT_TESTF_DM)
300 ut_assertok(dm_test_pre_run(uts));
302 ut_set_skip_delays(uts, false);
304 uts->start = mallinfo();
306 if (test->flags & UT_TESTF_SCAN_PDATA) {
307 ut_assertok(dm_scan_plat(false));
308 ut_assertok(dm_scan_other(false));
311 if (test->flags & UT_TESTF_PROBE_TEST)
312 ut_assertok(do_autoprobe(uts));
314 if (!CONFIG_IS_ENABLED(OF_PLATDATA) &&
315 (test->flags & UT_TESTF_SCAN_FDT))
316 ut_assertok(dm_extended_scan(false));
318 if (IS_ENABLED(CONFIG_SANDBOX) && (test->flags & UT_TESTF_OTHER_FDT)) {
319 /* make sure the other FDT is available */
320 ut_assertok(test_load_other_fdt(uts));
323 * create a new live tree with it for every test, in case a
324 * test modifies the tree
326 if (of_live_active()) {
327 ut_assertok(unflatten_device_tree(uts->other_fdt,
332 if (test->flags & UT_TESTF_CONSOLE_REC) {
333 int ret = console_record_reset_enable();
336 printf("Skipping: Console recording disabled\n");
340 ut_silence_console(uts);
346 * test_post_run() - Handle cleaning up after a test
349 * @test: Test to clean up after
350 * Return: 0 if OK, -ve on error (meaning that testing cannot likely continue)
352 static int test_post_run(struct unit_test_state *uts, struct unit_test *test)
354 ut_unsilence_console(uts);
355 if (test->flags & UT_TESTF_DM)
356 ut_assertok(dm_test_post_run(uts));
357 ut_assertok(cyclic_uninit());
358 ut_assertok(event_uninit());
361 uts->of_other = NULL;
367 * ut_run_test() - Run a single test
369 * This runs the test, handling any preparation and clean-up needed. It prints
370 * the name of each test before running it.
372 * @uts: Test state to update. The caller should ensure that this is zeroed for
373 * the first call to this function. On exit, @uts->fail_count is
374 * incremented by the number of failures (0, one hopes)
375 * @test_name: Test to run
376 * @name: Name of test, possibly skipping a prefix that should not be displayed
377 * Return: 0 if all tests passed, -EAGAIN if the test should be skipped, -1 if
380 static int ut_run_test(struct unit_test_state *uts, struct unit_test *test,
381 const char *test_name)
383 const char *fname = strrchr(test->file, '/') + 1;
384 const char *note = "";
387 if ((test->flags & UT_TESTF_DM) && !uts->of_live)
388 note = " (flat tree)";
389 printf("Test: %s: %s%s\n", test_name, fname, note);
391 /* Allow access to test state from drivers */
394 ret = test_pre_run(uts, test);
402 ret = test_post_run(uts, test);
406 test_set_state( NULL);
412 * ut_run_test_live_flat() - Run a test with both live and flat tree
414 * This calls ut_run_test() with livetree enabled, which is the standard setup
415 * for runnig tests. Then, for driver model test, it calls it again with
416 * livetree disabled. This allows checking of flattree being used when OF_LIVE
417 * is enabled, as is the case in U-Boot proper before relocation, as well as in
420 * @uts: Test state to update. The caller should ensure that this is zeroed for
421 * the first call to this function. On exit, @uts->fail_count is
422 * incremented by the number of failures (0, one hopes)
424 * @name: Name of test, possibly skipping a prefix that should not be displayed
425 * Return: 0 if all tests passed, -EAGAIN if the test should be skipped, -1 if
428 static int ut_run_test_live_flat(struct unit_test_state *uts,
429 struct unit_test *test, const char *name)
433 if ((test->flags & UT_TESTF_OTHER_FDT) && !IS_ENABLED(CONFIG_SANDBOX))
436 /* Run with the live tree if possible */
438 if (CONFIG_IS_ENABLED(OF_LIVE)) {
439 if (!(test->flags & UT_TESTF_FLAT_TREE)) {
441 ut_assertok(ut_run_test(uts, test, test->name));
447 * Run with the flat tree if:
448 * - it is not marked for live tree only
449 * - it doesn't require the 'other' FDT when OFNODE_MULTI_TREE_MAX is
450 * not enabled (since flat tree can only support a single FDT in that
452 * - we couldn't run it with live tree,
453 * - it is a core test (dm tests except video)
454 * - the FDT is still valid and has not been updated by an earlier test
455 * (for sandbox we handle this by copying the tree, but not for other
458 if (!(test->flags & UT_TESTF_LIVE_TREE) &&
459 (CONFIG_IS_ENABLED(OFNODE_MULTI_TREE) ||
460 !(test->flags & UT_TESTF_OTHER_FDT)) &&
461 (!runs || ut_test_run_on_flattree(test)) &&
462 !(gd->flags & GD_FLG_FDT_CHANGED)) {
463 uts->of_live = false;
464 ut_assertok(ut_run_test(uts, test, test->name));
472 * ut_run_tests() - Run a set of tests
474 * This runs the tests, handling any preparation and clean-up needed. It prints
475 * the name of each test before running it.
477 * @uts: Test state to update. The caller should ensure that this is zeroed for
478 * the first call to this function. On exit, @uts->fail_count is
479 * incremented by the number of failures (0, one hopes)
480 * @prefix: String prefix for the tests. Any tests that have this prefix will be
481 * printed without the prefix, so that it is easier to see the unique part
482 * of the test name. If NULL, no prefix processing is done
483 * @tests: List of tests to run
484 * @count: Number of tests to run
485 * @select_name: Name of a single test to run (from the list provided). If NULL
486 * then all tests are run
487 * Return: 0 if all tests passed, -ENOENT if test @select_name was not found,
488 * -EBADF if any failed
490 static int ut_run_tests(struct unit_test_state *uts, const char *prefix,
491 struct unit_test *tests, int count,
492 const char *select_name)
494 struct unit_test *test;
497 for (test = tests; test < tests + count; test++) {
498 const char *test_name = test->name;
499 int ret, i, old_fail_count;
501 if (!test_matches(prefix, test_name, select_name))
503 old_fail_count = uts->fail_count;
504 for (i = 0; i < uts->runs_per_test; i++)
505 ret = ut_run_test_live_flat(uts, test, select_name);
506 if (uts->fail_count != old_fail_count) {
507 printf("Test %s failed %d times\n", select_name,
508 uts->fail_count - old_fail_count);
516 if (select_name && !found)
519 return uts->fail_count ? -EBADF : 0;
522 int ut_run_list(const char *category, const char *prefix,
523 struct unit_test *tests, int count, const char *select_name,
526 struct unit_test_state uts = { .fail_count = 0 };
527 bool has_dm_tests = false;
530 if (!CONFIG_IS_ENABLED(OF_PLATDATA) &&
531 ut_list_has_dm_tests(tests, count)) {
534 * If we have no device tree, or it only has a root node, then
535 * these * tests clearly aren't going to work...
537 if (!gd->fdt_blob || fdt_next_node(gd->fdt_blob, 0, NULL) < 0) {
538 puts("Please run with test device tree:\n"
539 " ./u-boot -d arch/sandbox/dts/test.dtb\n");
540 return CMD_RET_FAILURE;
545 printf("Running %d %s tests\n", count, category);
547 uts.of_root = gd_of_root();
548 uts.runs_per_test = runs_per_test;
549 if (fdt_action() == FDTCHK_COPY && gd->fdt_blob) {
550 uts.fdt_size = fdt_totalsize(gd->fdt_blob);
551 uts.fdt_copy = os_malloc(uts.fdt_size);
553 printf("Out of memory for device tree copy\n");
556 memcpy(uts.fdt_copy, gd->fdt_blob, uts.fdt_size);
558 ret = ut_run_tests(&uts, prefix, tests, count, select_name);
560 /* Best efforts only...ignore errors */
562 dm_test_restore(uts.of_root);
563 if (IS_ENABLED(CONFIG_SANDBOX)) {
564 os_free(uts.fdt_copy);
565 os_free(uts.other_fdt);
569 printf("Test '%s' not found\n", select_name);
571 printf("Failures: %d\n", uts.fail_count);
573 /* Best efforts only...ignore errors */
575 dm_test_restore(uts.of_root);