1.\" $OpenBSD: tpm.4,v 1.3 2021/09/12 16:37:42 jmc Exp $ 2.\" 3.\" Copyright (c) 2010 Hans-Joerg Hoexer 4.\" Copyright (c) 2016 joshua stein <jcs@openbsd.org> 5.\" 6.\" Permission to use, copy, modify, and distribute this software for any 7.\" purpose with or without fee is hereby granted, provided that the above 8.\" copyright notice and this permission notice appear in all copies. 9.\" 10.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17.\" 18.Dd $Mdocdate: September 12 2021 $ 19.Dt TPM 4 20.Os 21.Sh NAME 22.Nm tpm 23.Nd Trusted Platform Module device 24.Sh SYNOPSIS 25.Cd "tpm* at acpi?" 26.Sh DESCRIPTION 27The 28.Nm 29driver supports devices implementing the TPM Interface Spec 1.2. 30.Pp 31Supported devices include: 32.Pp 33.Bl -bullet -compact -offset indent 34.It 35Atmel 97SC3203 36.It 37Broadcom BCM0102 38.It 39Infineon IFX SLD 9630 TT 1.1 and IFX SLB 9635 TT 1.2 40.It 41Intel INTC0102 42.It 43Sinosun SNS SSX35 44.It 45STM ST19WP18 46.It 47Winbond WEC WPCT200 48.El 49.Sh HISTORY 50The 51.Nm 52driver first appeared in 53.Ox 6.1 . 54.Sh AUTHORS 55.An -nosplit 56The 57.Nm 58driver was initially written by 59.An Michael Shalayeff 60and 61.An Hans-Joerg Hoexer . 62.Sh CAVEATS 63Functionality is limited to instructing the device to save its state before a 64system suspend. 65