1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (c) 2019, Linaro Limited
4  */
5 
6 #include <common.h>
7 #include <dm.h>
8 #include <log.h>
9 #include <rng.h>
10 #include <dm/test.h>
11 #include <test/ut.h>
12 
13 /* Basic test of the rng uclass */
dm_test_rng_read(struct unit_test_state * uts)14 static int dm_test_rng_read(struct unit_test_state *uts)
15 {
16 	unsigned long rand1 = 0, rand2 = 0;
17 	struct udevice *dev;
18 
19 	ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev));
20 	ut_assertnonnull(dev);
21 	ut_assertok(dm_rng_read(dev, &rand1, sizeof(rand1)));
22 	ut_assertok(dm_rng_read(dev, &rand2, sizeof(rand2)));
23 	ut_assert(rand1 != rand2);
24 
25 	return 0;
26 }
27 DM_TEST(dm_test_rng_read, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
28