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