1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 31 #include <sys/types.h> 32 33 #include <machine/elf.h> 34 #include <machine/md_var.h> 35 36 #include <crypto/openssl/ossl.h> 37 #include <crypto/openssl/ossl_cipher.h> 38 #include <crypto/openssl/arm_arch.h> 39 40 /* 41 * Feature bits defined in arm_arch.h 42 */ 43 unsigned int OPENSSL_armcap_P; 44 45 ossl_cipher_setkey_t aes_v8_set_encrypt_key; 46 ossl_cipher_setkey_t aes_v8_set_decrypt_key; 47 48 ossl_cipher_setkey_t vpaes_set_encrypt_key; 49 ossl_cipher_setkey_t vpaes_set_decrypt_key; 50 51 void 52 ossl_cpuid(struct ossl_softc *sc) 53 { 54 /* SHA features */ 55 if ((elf_hwcap & HWCAP_SHA1) != 0) 56 OPENSSL_armcap_P |= ARMV8_SHA1; 57 if ((elf_hwcap & HWCAP_SHA2) != 0) 58 OPENSSL_armcap_P |= ARMV8_SHA256; 59 if ((elf_hwcap & HWCAP_SHA512) != 0) 60 OPENSSL_armcap_P |= ARMV8_SHA512; 61 62 /* AES features */ 63 if ((elf_hwcap & HWCAP_AES) != 0) 64 OPENSSL_armcap_P |= ARMV8_AES; 65 if ((elf_hwcap & HWCAP_PMULL) != 0) 66 OPENSSL_armcap_P |= ARMV8_PMULL; 67 68 if ((OPENSSL_armcap_P & ARMV8_AES) == 0 && 69 (OPENSSL_armcap_P & ARMV7_NEON) == 0) { 70 sc->has_aes = false; 71 return; 72 } 73 sc->has_aes = true; 74 if (OPENSSL_armcap_P & ARMV8_AES) { 75 ossl_cipher_aes_cbc.set_encrypt_key = aes_v8_set_encrypt_key; 76 ossl_cipher_aes_cbc.set_decrypt_key = aes_v8_set_decrypt_key; 77 } else { 78 ossl_cipher_aes_cbc.set_encrypt_key = vpaes_set_encrypt_key; 79 ossl_cipher_aes_cbc.set_decrypt_key = vpaes_set_decrypt_key; 80 } 81 } 82