target/linux/ath79/base-files/lib/functions/mikrotik-caldata.sh

   1 # Copyright (C) 2019 Robert Marko <robimarko@gmail.com>
   2 # Copyright (C) 2019 Roger Pueyo Centelles <roger.pueyo@guifi.net>
   3 #
   4 # Helper function to extract MAC addresses and calibration data for MikroTik
   5 #
   6
   7 mikrotik_caldata_extract() {
   8         local part=$1
   9         local offset=$(($2))
  10         local count=$(($3))
  11         local mtd
  12         local erdfile="/lib/firmware/erd.bin"
  13
  14         mtd=$(find_mtd_chardev $part)
  15         [ -n "$mtd" ] || caldata_die "no mtd device found for partition $part"
  16
  17         rbextract -e $mtd $erdfile
  18
  19         dd if=$erdfile of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
  20                 caldata_die "failed to extract calibration data from $mtd"
  21 }