# arg 1:  the new package version
# arg 2:  the old package version

KERNEL_NAME=-orion
KERNEL_VERSION=3.2.1-1-orion

patch_kernel() {
  if [ -e "etc/machid.bin" ]; then
    echo "Saved machine type found. Patching Kernel"
    cp etc/machid.bin tmp/machid
  else
    echo "The kernel needs to be patched to include the machine type"
    echo ""
    echo "Please select your machine (enter any other value to skip):"

    echo " 1. Marvell Orion-2 Development Board"
    echo " 2. Marvell Orion-NAS Reference Design"
    echo " 3. Buffalo Linkstation Pro/Live"
    echo " 4. Buffalo/Revogear Kurobox Pro"
    echo " 5. Buffalo Terastation Pro II/Live"
    echo " 6. Buffalo Linkstation Mini"
    echo " 7. Buffalo Linkstation LS-HGL"
    echo " 8. D-Link DNS-323"
    echo " 9. QNAP TS-109/TS-209"
    echo "10. QNAP TS-409"
    echo "11. Linksys WRT350N v2"
    echo "12. HP Media Vault mv2120"
    echo "13. LaCie Ethernet Disk mini V2"
    echo "14. LaCie Big Disk Network"
    echo "15. LaCie d2 Network"
    echo "16. LaCie 2Big Network"
    echo "17. Maxtor Shared Storage II"
    echo "18. Netgear WNR854T"
    echo "19. Marvell Orion-VoIP GE Reference Design"
    echo "20. Marvell Orion-VoIP FXO Reference Design"
    echo "21. Marvell Orion-1-90 AP GE Reference Design"
    echo "22. Buffalo Linkstation LiveV3 (LS-CHL)"
    echo -n "--> "

    read arch

    case $arch in
      1) devio > tmp/machid 'wl 0xe3a01c05,4' 'wl 0xe381104e,4' ;;
      2) devio > tmp/machid 'wl 0xe3a01c05,4' 'wl 0xe38110e4,4' ;;
      3) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe3811031,4' ;;
      4) devio > tmp/machid 'wl 0xe3a01c05,4' 'wl 0xe38110e5,4' ;;
      5) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe3811030,4' ;;
      6) devio > tmp/machid 'wl 0xe3a01c07,4' 'wl 0xe3811042,4' ;;
      7) devio > tmp/machid 'wl 0xe3a01c07,4' 'wl 0xe38110d5,4' ;;
      8) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe3811006,4' ;;
      9) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe381101d,4' ;;
      10) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe3811041,4' ;;
      11) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe3811061,4' ;;
      12) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe381109d,4' ;;
      13) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe38110dc,4' ;;
      14) devio > tmp/machid 'wl 0xe3a01c08,4' 'wl 0xe38110eb,4' ;;
      15) devio > tmp/machid 'wl 0xe3a01c08,4' 'wl 0xe38110ea,4' ;;
      16) devio > tmp/machid 'wl 0xe3a01c09,4' 'wl 0xe3811026,4' ;;
      17) devio > tmp/machid 'wl 0xe3a01c06,4' 'wl 0xe38110e6,4' ;;
      18) devio > tmp/machid 'wl 0xe3a01c07,4' 'wl 0xe3811009,4' ;;
      19) devio > tmp/machid 'wl 0xe3a01c07,4' 'wl 0xe3811014,4' ;;
      20) devio > tmp/machid 'wl 0xe3a01c07,4' 'wl 0xe381101a,4' ;;
      21) devio > tmp/machid 'wl 0xe3a01c07,4' 'wl 0xe3811066,4' ;;
      22) devio > tmp/machid 'wl 0xe3a01c0b,4' 'wl 0xe3811016,4' ;;
    esac

    cp tmp/machid etc/machid.bin
  fi

  echo "Generating patched zImage"
  cat boot/zImage >> tmp/machid

  echo "Generating uImage"
  mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000 -d tmp/machid boot/uImage
  rm tmp/machid
}

post_install () {
  patch_kernel

  # updating module dependencies
  echo ">>> Updating module dependencies. Please wait ..."
  depmod ${KERNEL_VERSION}
}

post_upgrade() {
  patch_kernel

  if grep "^[^#]*[[:space:]]/boot" etc/fstab 2>&1 >/dev/null; then
    if ! grep "[[:space:]]/boot" etc/mtab 2>&1 >/dev/null; then
      echo "WARNING: /boot appears to be a seperate partition but is not mounted."
      echo "         You probably just broke your system. Congratulations."
    fi
  fi

  # updating module dependencies
  echo ">>> Updating module dependencies. Please wait ..."
  depmod ${KERNEL_VERSION}
}