rng.c 639 B

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