1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * s390 arch random implementation.
4  *
5  * Copyright IBM Corp. 2017, 2020
6  * Author(s): Harald Freudenberger
7  */
8 
9 #include <linux/kernel.h>
10 #include <linux/atomic.h>
11 #include <linux/random.h>
12 #include <linux/static_key.h>
13 #include <asm/archrandom.h>
14 #include <asm/cpacf.h>
15 
16 DEFINE_STATIC_KEY_FALSE(s390_arch_random_available);
17 
18 atomic64_t s390_arch_random_counter = ATOMIC64_INIT(0);
19 EXPORT_SYMBOL(s390_arch_random_counter);
20