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.