22bd0c9731
Enable in-kernel acceleration of SHA1 and SHA2 operations on arm64 by adding support for the ossl(4) crypto driver. This uses OpenSSL's assembly routines under the hood, which will detect and use SHA intrinsics if they are supported by the CPU. Reviewed by: jhb Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D27390
63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2020 The FreeBSD Foundation
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*
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* This software was developed by Mitchell Horne <mhorne@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <machine/elf.h>
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#include <machine/md_var.h>
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#include <crypto/openssl/ossl.h>
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#include <crypto/openssl/aarch64/arm_arch.h>
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/*
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* Feature bits defined in arm_arch.h
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*/
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unsigned int OPENSSL_armcap_P;
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void
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ossl_cpuid(void)
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{
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/* SHA features */
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if ((elf_hwcap & HWCAP_SHA1) != 0)
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OPENSSL_armcap_P |= ARMV8_SHA1;
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if ((elf_hwcap & HWCAP_SHA2) != 0)
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OPENSSL_armcap_P |= ARMV8_SHA256;
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if ((elf_hwcap & HWCAP_SHA512) != 0)
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OPENSSL_armcap_P |= ARMV8_SHA512;
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/* AES features */
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if ((elf_hwcap & HWCAP_AES) != 0)
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OPENSSL_armcap_P |= ARMV8_AES;
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if ((elf_hwcap & HWCAP_PMULL) != 0)
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OPENSSL_armcap_P |= ARMV8_PMULL;
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}
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