41 lines
624 B
C
41 lines
624 B
C
/*
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* (C) Copyright 2021 Rockchip Electronics Co., Ltd
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <rng.h>
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unsigned int rand_r(unsigned int *seedp)
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{
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struct udevice *dev;
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unsigned int rand;
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int ret;
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ret = uclass_get_device(UCLASS_RNG, 0, &dev);
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if (ret) {
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printf("No RNG device, ret=%d\n", ret);
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return ret;
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}
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ret = dm_rng_read(dev, &rand, sizeof(unsigned int));
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if (ret) {
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printf("Reading RNG failed, ret=%d\n", ret);
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return ret;
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}
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return rand;
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}
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unsigned int rand(void)
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{
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return rand_r(0);
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}
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void srand(unsigned int seed)
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{
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/* nothing to do */
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}
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