u-boot/test/dm/rng.c
Sughosh Ganu 4ee08eb115 test: rng: Add basic test for random number generator(rng) uclass
Add a unit test for testing the rng uclass functionality using the
sandbox rng driver.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-01-07 18:08:21 +01:00

26 lines
639 B
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2019, Linaro Limited
*/
#include <common.h>
#include <dm.h>
#include <rng.h>
#include <dm/test.h>
#include <test/ut.h>
/* Basic test of the rng uclass */
static int dm_test_rng_read(struct unit_test_state *uts)
{
unsigned long rand1 = 0, rand2 = 0;
struct udevice *dev;
ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev));
ut_assertnonnull(dev);
ut_assertok(dm_rng_read(dev, &rand1, sizeof(rand1)));
ut_assertok(dm_rng_read(dev, &rand2, sizeof(rand2)));
ut_assert(rand1 != rand2);
return 0;
}
DM_TEST(dm_test_rng_read, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);