mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +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>
34 lines
759 B
C
34 lines
759 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2019, Linaro Limited
|
|
*/
|
|
|
|
#if !defined _RNG_H_
|
|
#define _RNG_H_
|
|
|
|
struct udevice;
|
|
|
|
/**
|
|
* dm_rng_read() - read a random number seed from the rng device
|
|
* @buffer: input buffer to put the read random seed into
|
|
* @size: number of bytes of random seed read
|
|
*
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int dm_rng_read(struct udevice *dev, void *buffer, size_t size);
|
|
|
|
/* struct dm_rng_ops - Operations for the hwrng uclass */
|
|
struct dm_rng_ops {
|
|
/**
|
|
* @read() - read a random number seed
|
|
*
|
|
* @data: input buffer to read the random seed
|
|
* @max: total number of bytes to read
|
|
*
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
int (*read)(struct udevice *dev, void *data, size_t max);
|
|
};
|
|
|
|
#endif /* _RNG_H_ */
|