1.\" Copyright (c) 2016 The FreeBSD Foundation
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3.\" This software was developed by Andrew Turner under
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27.Dd July 29, 2020
28.Dt ARMV8CRYPTO 4
29.Os
30.Sh NAME
31.Nm armv8crypto
32.Nd "driver for the AES accelerator on ARM CPUs"
33.Sh SYNOPSIS
34To compile this driver into the kernel,
35place the following lines in your
36kernel configuration file:
37.Bd -ragged -offset indent
38.Cd "device crypto"
39.Cd "device armv8crypto"
40.Ed
41.Pp
42Alternatively, to load the driver as a
43module at boot time, place the following line in
44.Xr loader.conf 5 :
45.Bd -literal -offset indent
46armv8crypto_load="YES"
47.Ed
48.Sh DESCRIPTION
49Starting with the ARMv8 architecture ARM Limited has added optional
50cryptography instructions to accelerate AES, SHA-1, SHA-2, and
51finite field arithmetic.
52.Pp
53The processor capability is reported as AES in the Instruction Set
54Attributes 0 line at boot.
55The
56.Nm
57driver does not attach on systems that lack the required CPU capability.
58.Pp
59The
60.Nm
61driver registers itself to accelerate AES operations for
62.Xr crypto 4 .
63.Sh SEE ALSO
64.Xr crypt 3 ,
65.Xr crypto 4 ,
66.Xr intro 4 ,
67.Xr ipsec 4 ,
68.Xr random 4 ,
69.Xr crypto 7 ,
70.Xr crypto 9
71.Sh HISTORY
72The
73.Nm
74driver first appeared in
75.Fx 11.0 .
76.Sh AUTHORS
77.An -nosplit
78The
79.Nm
80driver was written by
81.An Andrew Turner Aq Mt andrew@FreeBSD.org .
82