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Man Pages


Manual Reference Pages  -  CFI (4)

NAME

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

CONTENTS

Synopsis
Description
See Also
History
Authors

SYNOPSIS


.Cd device cfi
.Cd device cfid
.Cd options CFI_SUPPORT_STRATAFLASH
.Cd options CFI_ARMEDANDDANGEROUS

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

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

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
.Cd 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
.Cd CFI_ARMEDANDDANGEROUS kernel option.

SEE ALSO

led(4)

HISTORY

The cfi device driver first appeared in
.Fx 8.0 .

AUTHORS

The cfi driver was written by
.An Juniper Networks with StrataFlash support by
.An 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.
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