^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Non-physical true random number generator based on timing jitter --
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Linux Kernel Crypto API specific code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright Stephan Mueller <smueller@chronox.de>, 2015
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 1. Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * notice, and the entire permission notice in its entirety,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * including the disclaimer of warranties.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * 2. Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * notice, this list of conditions and the following disclaimer in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * documentation and/or other materials provided with the distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * 3. The name of the author may not be used to endorse or promote
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * products derived from this software without specific prior
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * ALTERNATIVELY, this product may be distributed under the terms of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * the GNU General Public License, in which case the provisions of the GPL2 are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * required INSTEAD OF the above restrictions. (This clause is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * necessary due to a potential bad interaction between the GPL and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * the restrictions contained in a BSD-style copyright.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/fips.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <crypto/internal/rng.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include "jitterentropy.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /***************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Helper function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ***************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void *jent_zalloc(unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return kzalloc(len, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) void jent_zfree(void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) kfree_sensitive(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int jent_fips_enabled(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return fips_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) void jent_panic(char *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) panic("%s", s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) void jent_memcpy(void *dest, const void *src, unsigned int n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) memcpy(dest, src, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * Obtain a high-resolution time stamp value. The time stamp is used to measure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * the execution time of a given code path and its variations. Hence, the time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * stamp must have a sufficiently high resolution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * Note, if the function returns zero because a given architecture does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * implement a high-resolution time stamp, the RNG code's runtime test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * will detect it and will not produce output.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) void jent_get_nstime(__u64 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) __u64 tmp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) tmp = random_get_entropy();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * If random_get_entropy does not return a value, i.e. it is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * implemented for a given architecture, use a clock source.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * hoping that there are timers we can work with.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (tmp == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) tmp = ktime_get_ns();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *out = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /***************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * Kernel crypto API interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ***************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct jitterentropy {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) spinlock_t jent_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct rand_data *entropy_collector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) unsigned int reset_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static int jent_kcapi_init(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct jitterentropy *rng = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) rng->entropy_collector = jent_entropy_collector_alloc(1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (!rng->entropy_collector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) spin_lock_init(&rng->jent_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static void jent_kcapi_cleanup(struct crypto_tfm *tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct jitterentropy *rng = crypto_tfm_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) spin_lock(&rng->jent_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (rng->entropy_collector)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) jent_entropy_collector_free(rng->entropy_collector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) rng->entropy_collector = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) spin_unlock(&rng->jent_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static int jent_kcapi_random(struct crypto_rng *tfm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) const u8 *src, unsigned int slen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) u8 *rdata, unsigned int dlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct jitterentropy *rng = crypto_rng_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) spin_lock(&rng->jent_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /* Return a permanent error in case we had too many resets in a row. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (rng->reset_cnt > (1<<10)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ret = jent_read_entropy(rng->entropy_collector, rdata, dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /* Reset RNG in case of health failures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (ret < -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) pr_warn_ratelimited("Reset Jitter RNG due to health test failure: %s failure\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) (ret == -2) ? "Repetition Count Test" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) "Adaptive Proportion Test");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) rng->reset_cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) ret = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) rng->reset_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) /* Convert the Jitter RNG error into a usable error code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (ret == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) spin_unlock(&rng->jent_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int jent_kcapi_reset(struct crypto_rng *tfm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) const u8 *seed, unsigned int slen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static struct rng_alg jent_alg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .generate = jent_kcapi_random,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .seed = jent_kcapi_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .seedsize = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .base = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .cra_name = "jitterentropy_rng",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .cra_driver_name = "jitterentropy_rng",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .cra_priority = 100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) .cra_ctxsize = sizeof(struct jitterentropy),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .cra_module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) .cra_init = jent_kcapi_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) .cra_exit = jent_kcapi_cleanup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static int __init jent_mod_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) ret = jent_entropy_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) pr_info("jitterentropy: Initialization failed with host not compliant with requirements: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return crypto_register_rng(&jent_alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static void __exit jent_mod_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) crypto_unregister_rng(&jent_alg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) module_init(jent_mod_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) module_exit(jent_mod_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) MODULE_LICENSE("Dual BSD/GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) MODULE_AUTHOR("Stephan Mueller <smueller@chronox.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) MODULE_DESCRIPTION("Non-physical True Random Number Generator based on CPU Jitter");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) MODULE_ALIAS_CRYPTO("jitterentropy_rng");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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