1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2020 The FreeBSD Foundation
5 *
6 * This software was developed by Mitchell Horne <[email protected]>
7 * under sponsorship from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD$
31 */
32
33 #include <sys/types.h>
34
35 #include <machine/elf.h>
36 #include <machine/md_var.h>
37
38 #include <crypto/openssl/ossl.h>
39 #include <crypto/openssl/aarch64/arm_arch.h>
40
41 /*
42 * Feature bits defined in arm_arch.h
43 */
44 unsigned int OPENSSL_armcap_P;
45
46 void
ossl_cpuid(void)47 ossl_cpuid(void)
48 {
49 /* SHA features */
50 if ((elf_hwcap & HWCAP_SHA1) != 0)
51 OPENSSL_armcap_P |= ARMV8_SHA1;
52 if ((elf_hwcap & HWCAP_SHA2) != 0)
53 OPENSSL_armcap_P |= ARMV8_SHA256;
54 if ((elf_hwcap & HWCAP_SHA512) != 0)
55 OPENSSL_armcap_P |= ARMV8_SHA512;
56
57 /* AES features */
58 if ((elf_hwcap & HWCAP_AES) != 0)
59 OPENSSL_armcap_P |= ARMV8_AES;
60 if ((elf_hwcap & HWCAP_PMULL) != 0)
61 OPENSSL_armcap_P |= ARMV8_PMULL;
62 }
63