#!/bin/sh
set -e
set -u
printf 'This script outputs firmware information in the format expected by /etc/genkernel.conf\n'
all_files="$(sudo dmesg | awk '/Loading firmware:/{print $7}' | sort -u | paste -sd ',' | tr -d '\n')"
needed_firmware=""
for file in $(printf '%s' "${all_files}" | tr ',' ' '); do
  [ "${file}" = 'regulatory.db' ] && continue
  if [ ! -f "/lib/firmware/${file}" ]; then
    printf 'Current kernel loaded %s which is missing!\n' "${file}"
  else
    if [ -z "${needed_firmware}" ]; then
      needed_firmware="${file}"
    else
      needed_firmware="${needed_firmware:-},${file}"
    fi
  fi
done
printf 'FIRMWARE_FILES="%s"\n' "${needed_firmware}"