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CFI(4)			     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  pro-
     gramme.

FreeBSD ports 15.1		January 20, 2016			  CFI(4)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=cfi&sektion=4&manpath=FreeBSD+15.1-RELEASE+and+Ports>

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