CFI(4)                 FreeBSD Kernel Interfaces Manual                 CFI(4)

NAME
     cfi, cfid - driver for Common Flash Interface (CFI) NOR flash

SYNOPSIS
     device cfi
     device cfid
     options CFI_SUPPORT_STRATAFLASH
     options CFI_ARMEDANDDANGEROUS

     In /boot/device.hints:
     hint.cfi.0.at="nexus0"
     hint.cfi.0.maddr=0x74000000
     hint.cfi.0.msize=0x4000000

     In DTS file:
     flash@74000000 {
       compatible = "cfi-flash";
       reg = <0x74000000 0x4000000>;
     };

DESCRIPTION
     The cfi device driver provides a management interface to NOR flash
     devices supporting the Common Flash Interface (CFI) specification.  Its
     companion device cfid provides a geom(4) disk interface to the device.

     Special support for features of the Intel StrataFlash line are available
     with the CFI_SUPPORT_STRATAFLASH kernel option.  Additional support for
     write-once bits to switch part of Intel StrataFlash devices to read-only
     can be enabled by the CFI_ARMEDANDDANGEROUS kernel option.

SEE ALSO
     led(4)

HISTORY
     The cfi device driver first appeared in FreeBSD 8.0.

AUTHORS
     The cfi driver was written by Juniper Networks with StrataFlash support
     by
     Sam Leffler.  This manual page was written by SRI International and the
     University of Cambridge Computer Laboratory under DARPA/AFRL contract
     (FA8750-10-C-0237) ("CTSRD"), as part of the DARPA CRASH research
     programme.

FreeBSD 13.1-RELEASE-p6        January 20, 2016        FreeBSD 13.1-RELEASE-p6