ossl_aarch64.c

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    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 <mhorne@FreeBSD.org>
    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/ossl_cipher.h>
   40 #include <crypto/openssl/aarch64/arm_arch.h>
   41 
   42 /*
   43  * Feature bits defined in arm_arch.h
   44  */
   45 unsigned int OPENSSL_armcap_P;
   46 
   47 ossl_cipher_setkey_t aes_v8_set_encrypt_key;
   48 ossl_cipher_setkey_t aes_v8_set_decrypt_key;
   49 
   50 ossl_cipher_setkey_t vpaes_set_encrypt_key;
   51 ossl_cipher_setkey_t vpaes_set_decrypt_key;
   52 
   53 void
   54 ossl_cpuid(struct ossl_softc *sc)
   55 {
   56         /* SHA features */
   57         if ((elf_hwcap & HWCAP_SHA1) != 0)
   58                 OPENSSL_armcap_P |= ARMV8_SHA1;
   59         if ((elf_hwcap & HWCAP_SHA2) != 0)
   60                 OPENSSL_armcap_P |= ARMV8_SHA256;
   61         if ((elf_hwcap & HWCAP_SHA512) != 0)
   62                 OPENSSL_armcap_P |= ARMV8_SHA512;
   63 
   64         /* AES features */
   65         if ((elf_hwcap & HWCAP_AES) != 0)
   66                 OPENSSL_armcap_P |= ARMV8_AES;
   67         if ((elf_hwcap & HWCAP_PMULL) != 0)
   68                 OPENSSL_armcap_P |= ARMV8_PMULL;
   69 
   70         if ((OPENSSL_armcap_P & ARMV8_AES) == 0 &&
   71             (OPENSSL_armcap_P & ARMV7_NEON) == 0) {
   72                 sc->has_aes = false;
   73                 return;
   74         }
   75         sc->has_aes = true;
   76         if (OPENSSL_armcap_P & ARMV8_AES) {
   77                 ossl_cipher_aes_cbc.set_encrypt_key = aes_v8_set_encrypt_key;
   78                 ossl_cipher_aes_cbc.set_decrypt_key = aes_v8_set_decrypt_key;
   79         } else {
   80                 ossl_cipher_aes_cbc.set_encrypt_key = vpaes_set_encrypt_key;
   81                 ossl_cipher_aes_cbc.set_decrypt_key = vpaes_set_decrypt_key;
   82         }
   83 }

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FreeBSD/Linux Kernel Cross Reference sys/crypto/openssl/ossl_aarch64.c

FreeBSD/Linux Kernel Cross Reference
sys/crypto/openssl/ossl_aarch64.c