1.\" Copyright (c) 2016 The FreeBSD Foundation 2.\" All rights reserved. 3.\" 4.\" This software was developed by Andrew Turner under 5.\" sponsorship from the FreeBSD Foundation. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" $FreeBSD$ 29.\" 30.Dd October 20, 2016 31.Dt ARMV8CRYPTO 4 32.Os 33.Sh NAME 34.Nm armv8crypto 35.Nd "driver for the AES accelerator on ARM CPUs" 36.Sh SYNOPSIS 37To compile this driver into the kernel, 38place the following lines in your 39kernel configuration file: 40.Bd -ragged -offset indent 41.Cd "device crypto" 42.Cd "device armv8crypto" 43.Ed 44.Pp 45Alternatively, to load the driver as a 46module at boot time, place the following line in 47.Xr loader.conf 5 : 48.Bd -literal -offset indent 49armv8crypto_load="YES" 50.Ed 51.Sh DESCRIPTION 52Starting with the ARMv8 architecture ARM Limited has added optional 53cryptography instructions to accelerate AES, SHA-1, SHA-2, and 54finite field arithmetic. 55.Pp 56The processor capability is reported as AES in the Instruction Set 57Attributes 0 line at boot. 58The 59.Nm 60driver does not attach on systems that lack the required CPU capability. 61.Pp 62The 63.Nm 64driver registers itself to accelerate AES operations for 65.Xr crypto 4 . 66.Sh SEE ALSO 67.Xr crypt 3 , 68.Xr crypto 4 , 69.Xr intro 4 , 70.Xr ipsec 4 , 71.Xr random 4 , 72.Xr crypto 9 73.Sh HISTORY 74The 75.Nm 76driver first appeared in 77.Fx 11.0 . 78.Sh AUTHORS 79.An -nosplit 80The 81.Nm 82driver was written by 83.An Andrew Turner Aq Mt andrew@FreeBSD.org . 84