mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 11:18:28 +00:00
a248768400
Add a uclass for reading a random number seed from a random number generator device. Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
23 lines
395 B
C
23 lines
395 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2019, Linaro Limited
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <rng.h>
|
|
|
|
int dm_rng_read(struct udevice *dev, void *buffer, size_t size)
|
|
{
|
|
const struct dm_rng_ops *ops = device_get_ops(dev);
|
|
|
|
if (!ops->read)
|
|
return -ENOSYS;
|
|
|
|
return ops->read(dev, buffer, size);
|
|
}
|
|
|
|
UCLASS_DRIVER(rng) = {
|
|
.name = "rng",
|
|
.id = UCLASS_RNG,
|
|
};
|