1.\"- 2.\" Copyright (c) 2015-2016 SRI International 3.\" All rights reserved. 4.\" 5.\" This software was developed by SRI International and the University of 6.\" Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7.\" ("CTSRD"), as part of the DARPA CRASH research programme. 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.\" $FreeBSD$ 31.\" 32.Dd January 20, 2016 33.Dt CFI 4 34.Os 35.Sh NAME 36.Nm cfi , 37.Nm cfid 38.Nd driver for Common Flash Interface (CFI) NOR flash 39.Sh SYNOPSIS 40.Cd "device cfi" 41.Cd "device cfid" 42.Cd "options CFI_SUPPORT_STRATAFLASH" 43.Cd "options CFI_ARMEDANDDANGEROUS" 44.Pp 45In 46.Pa /boot/device.hints : 47.Cd hint.cfi.0.at="nexus0" 48.Cd hint.cfi.0.maddr=0x74000000 49.Cd hint.cfi.0.msize=0x4000000 50.Pp 51In DTS file: 52.Cd flash@74000000 { 53.Cd " compatible =" Qo cfi-flash Qc ; 54.Cd " reg = <0x74000000 0x4000000>;" 55.Cd }; 56.Sh DESCRIPTION 57The 58.Nm 59device driver provides a management interface to NOR flash devices supporting 60the Common Flash Interface (CFI) specification. 61Its companion device 62.Nm cfid 63provides a 64.Xr geom 4 65disk interface to the device. 66.Pp 67Special support for features of the Intel StrataFlash line are available 68with the 69.Cd CFI_SUPPORT_STRATAFLASH 70kernel option. 71Additional support for write-once bits to switch part of Intel StrataFlash 72devices to read-only can be enabled by the 73.Cd CFI_ARMEDANDDANGEROUS 74kernel option. 75.El 76.Sh SEE ALSO 77.Xr led 4 78.Sh HISTORY 79The 80.Nm 81device driver first appeared in 82.Fx 8.0 . 83.Sh AUTHORS 84The 85.Nm 86driver was written by 87.An Juniper Networks 88with StrataFlash support by 89.An Sam Leffler . 90This manual page was written by SRI International and the University of 91Cambridge Computer Laboratory under DARPA/AFRL contract 92.Pq FA8750-10-C-0237 93.Pq Do CTSRD Dc , 94as part of the DARPA CRASH research programme. 95