Kconfig

# SPDX-License-Identifier: GPL-2.0-only
#
# beamfs filesystem configuration
#

config BEAMFS_FS
	tristate "beamfs - resilient filesystem"
	depends on BLOCK
	select CRC32
	select REED_SOLOMON
	select REED_SOLOMON_ENC8
	select REED_SOLOMON_DEC8
	help
	  beamfs is a POSIX-compatible filesystem designed for dependable
	  storage in electromagnetically harsh environments (radiation,
	  IEMI, HPM, EMP, conducted EMI). It provides:

	    - CRC32 checksumming per block and per inode
	    - Reed-Solomon forward error correction (FEC) via lib/reed_solomon
	    - Electromagnetic Resilience Journal: persistent per-event log in superblock

	  RS(255,239) over GF(2^8) corrects up to 8 symbol errors per 239-byte
	  subblock in place, on a single device, without external redundancy.
	  This addresses silent bit flips caused by stochastic EM perturbations
	  (single-event upsets, retention loss, thermal stress) and adversarial
	  EM events (IEMI, HPM, EMP) in MRAM or NOR flash on embedded systems
	  in electromagnetically harsh environments.

	  Target: embedded Linux on nanosatellites and CubeSats, robotics in
	  nuclear/industrial environments, military and dual-use unmanned
	  platforms, space HPC, EM-contested edge AI deployments.
	  DO-178C / ECSS-E-ST-40C / IEC 61508 certification is an explicit
	  design constraint: the codebase targets under 5000 auditable lines.

	  Scientific lineage:
	  Fuchs, Langer, Trinitis - FTRFS: A Fault-Tolerant Radiation-Robust
	  Filesystem for Space Use, ARCS 2015, TU Munich / MOVE-II CubeSat.
	  https://www.cfuchs.net/chris/publication-list/ARCS2015/FTRFS.pdf
	  beamfs extends FTRFS from a radiation-only threat model to the
	  unified electromagnetic resilience model (Documentation/threat-model.md).

	  To compile as a module, choose M. The module will be called beamfs.

	  If unsure, say N.