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https://github.com/brain-hackers/u-boot-brain
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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+
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/*
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* Copyright (c) 2019, Linaro Limited
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*/
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#if !defined _RNG_H_
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#define _RNG_H_
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struct udevice;
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/**
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* dm_rng_read() - read a random number seed from the rng device
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* @buffer: input buffer to put the read random seed into
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* @size: number of bytes of random seed read
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*
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* Return: 0 if OK, -ve on error
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*/
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int dm_rng_read(struct udevice *dev, void *buffer, size_t size);
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/* struct dm_rng_ops - Operations for the hwrng uclass */
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struct dm_rng_ops {
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/**
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* @read() - read a random number seed
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*
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* @data: input buffer to read the random seed
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* @max: total number of bytes to read
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*
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* Return: 0 if OK, -ve on error
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*/
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int (*read)(struct udevice *dev, void *data, size_t max);
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};
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#endif /* _RNG_H_ */
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