scripts/om-fwupgradecfg-gen.sh

   1 #/bin/sh
   2 #
   3 # Copyright (C) 2011 OpenWrt.org
   4 #
   5 # This is free software, licensed under the GNU General Public License v2.
   6 # See /LICENSE for more information.
   7 #
   8
   9 usage() {
  10         echo "Usage: $0 <OM2P|MR600> <out file path> <kernel path> <rootfs path>"
  11         rm -f $CFG_OUT
  12         exit 1
  13 }
  14
  15 [ "$#" -lt 4 ] && usage
  16
  17 CE_TYPE=$1
  18 CFG_OUT=$2
  19 KERNEL_PATH=$3
  20 ROOTFS_PATH=$4
  21
  22 case $CE_TYPE in
  23         OM2P)
  24                 MAX_PART_SIZE=7168
  25                 KERNEL_FLASH_ADDR=0x1c0000
  26                 FLASH_BS=262144
  27                 MD5_SKIP_BLOCKS=1
  28                 ;;
  29         MR600)
  30                 MAX_PART_SIZE=7808
  31                 KERNEL_FLASH_ADDR=0xb0000
  32                 FLASH_BS=65536
  33                 MD5_SKIP_BLOCKS=4
  34                 ;;
  35         *)
  36                 echo "Error - unsupported ce type: $CE_TYPE"
  37                 exit 1
  38                 ;;
  39 esac
  40
  41 CHECK_BS=65536
  42
  43 KERNEL_SIZE=$(stat -c%s "$KERNEL_PATH")
  44 KERNEL_MD5=$(md5=$(md5sum $KERNEL_PATH); echo ${md5%% *})
  45 KERNEL_PART_SIZE=$(size=$(($KERNEL_SIZE / $FLASH_BS)); [ $(($size * $FLASH_BS)) -lt $KERNEL_SIZE ] && size=$(($size + 1)); echo $(($size * $FLASH_BS / 1024)))
  46
  47 ROOTFS_FLASH_ADDR=$(addr=$(($KERNEL_FLASH_ADDR + ($KERNEL_PART_SIZE * 1024))); printf "0x%x" $addr)
  48 ROOTFS_SIZE=$(stat -c%s "$ROOTFS_PATH")
  49 ROOTFS_CHECK_BLOCKS=$((($ROOTFS_SIZE / $CHECK_BS) - $MD5_SKIP_BLOCKS))
  50 ROOTFS_MD5=$(md5=$(dd if=$ROOTFS_PATH bs=$CHECK_BS count=$ROOTFS_CHECK_BLOCKS 2>&- | md5sum); echo ${md5%% *})
  51 ROOTFS_CHECK_SIZE=$(printf '0x%x' $(($ROOTFS_CHECK_BLOCKS * $CHECK_BS)))
  52 ROOTFS_PART_SIZE=$(($MAX_PART_SIZE - $KERNEL_PART_SIZE))
  53
  54 cat << EOF > $CFG_OUT
  55 [vmlinux]
  56 filename=kernel
  57 md5sum=$KERNEL_MD5
  58 flashaddr=$KERNEL_FLASH_ADDR
  59 checksize=0x0
  60 cmd_success=setenv bootseq 1,2; setenv kernel_size_1 $KERNEL_PART_SIZE; saveenv
  61 cmd_fail=reset
  62
  63 [rootfs]
  64 filename=rootfs
  65 md5sum=$ROOTFS_MD5
  66 flashaddr=$ROOTFS_FLASH_ADDR
  67 checksize=$ROOTFS_CHECK_SIZE
  68 cmd_success=setenv bootseq 1,2; setenv kernel_size_1 $KERNEL_PART_SIZE; setenv rootfs_size_1 $ROOTFS_PART_SIZE; saveenv
  69 cmd_fail=reset
  70 EOF