Hi, > -----Original Message----- > From: U-Boot <u-boot-boun...@lists.denx.de> On Behalf Of Sughosh Ganu > Sent: vendredi 13 décembre 2019 08:14 > To: u-boot@lists.denx.de > Subject: [PATCH v3 7/8] 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.g...@linaro.org> > Reviewed-by: Patrice Chotard <patrice.chot...@st.com> > --- > test/dm/Makefile | 1 + > test/dm/rng.c | 26 ++++++++++++++++++++++++++ > 2 files changed, 27 insertions(+) > create mode 100644 test/dm/rng.c > > diff --git a/test/dm/Makefile b/test/dm/Makefile index 0c2fd5c..f61bf65 100644 > --- a/test/dm/Makefile > +++ b/test/dm/Makefile > @@ -65,4 +65,5 @@ obj-$(CONFIG_VIRTIO_SANDBOX) += virtio.o > obj-$(CONFIG_DMA) += dma.o > obj-$(CONFIG_DM_MDIO) += mdio.o > obj-$(CONFIG_DM_MDIO_MUX) += mdio_mux.o > +obj-$(CONFIG_DM_RNG) += rng.o > endif > diff --git a/test/dm/rng.c b/test/dm/rng.c new file mode 100644 index > 0000000..879e80a > --- /dev/null > +++ b/test/dm/rng.c > @@ -0,0 +1,26 @@ > +// 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 val1 = 0, val2 = 0; > + struct udevice *dev; > + > + ut_assertok(uclass_get_device(UCLASS_RNG, 0, &dev)); > + ut_assertnonnull(dev); > + dm_rng_read(dev, &val1, sizeof(val1)); > + dm_rng_read(dev, &val2, sizeof(val2));
Test return: ut_assertok(dm_rng_read(dev, &val1, sizeof(val1))); ut_assertok(dm_rng_read(dev, &val2, sizeof(val2))) > + ut_assert(val1 != val2); You can also check the values as the sandbox driver use only the 2 next values : ut_asserteq(0x21524110, val1); ut_asserteq(0xDEADBEEF, val2); > + return 0; > +} > +DM_TEST(dm_test_rng_read, DM_TESTF_SCAN_PDATA | > DM_TESTF_SCAN_FDT); > -- > 2.7.4 Regards Patrick