test/dm/rng.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2019, Linaro Limited
   4  */
   5
   6 #include <dm.h>
   7 #include <log.h>
   8 #include <rng.h>
   9 #include <dm/test.h>
  10 #include <test/ut.h>
  11
  12 /* Basic test of the rng uclass */
  13 static int dm_test_rng_read(struct unit_test_state *uts)
  14 {
  15         unsigned long rand1 = 0, rand2 = 0;
  16         struct udevice *dev;
  17
  18         ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev));
  19         ut_assertnonnull(dev);
  20         ut_assertok(dm_rng_read(dev, &rand1, sizeof(rand1)));
  21         ut_assertok(dm_rng_read(dev, &rand2, sizeof(rand2)));
  22         ut_assert(rand1 != rand2);
  23
  24         return 0;
  25 }
  26 DM_TEST(dm_test_rng_read, UTF_SCAN_PDATA | UTF_SCAN_FDT);
  27
  28 /* Test the rng command */
  29 static int dm_test_rng_cmd(struct unit_test_state *uts)
  30 {
  31         struct udevice *dev;
  32
  33         ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev));
  34         ut_assertnonnull(dev);
  35
  36         run_command("rng", 0);
  37         ut_assert_nextlinen("00000000:");
  38         ut_assert_nextlinen("00000010:");
  39         ut_assert_nextlinen("00000020:");
  40         ut_assert_nextlinen("00000030:");
  41         ut_assert_console_end();
  42
  43         run_command("rng 0 10", 0);
  44         ut_assert_nextlinen("00000000:");
  45         ut_assert_console_end();
  46
  47         run_command("rng 20", 0);
  48         ut_assert_nextlinen("No RNG device");
  49         ut_assert_console_end();
  50
  51         return 0;
  52 }
  53 DM_TEST(dm_test_rng_cmd, UTF_SCAN_PDATA | UTF_SCAN_FDT | UTF_CONSOLE);