############################################################################

#

# Copyright (c) 2011 - dsixda ([email protected])

#

# Android Kitchen is 100% free. This script file is intended for personal

# and/or educational use only. It may not be duplicated for monetary

# benefit or any other purpose without the permission of the developer.

#

############################################################################

#

# This script has two optional parameters:

#

# $1 = folder where the image is located

# $2 = image name (e.g. data.img or system.img) - required if $1 defined

#

# If not specified, then script assumes system.img in working folder

#

base_dir=`pwd`

if [ "$1" == "" ]

then

cd WORKING_*

if [ ! -e system/system.img ]

then

echo "Error: system.img not found in working folder"

cd ..

exit 1

fi

cd system

image_file=system.img

else

if [ "$2" == "" ]

then

echo "Error: Image file not specified"

exit 1

fi

cd $1

image_file=$2

fi

#

# Check for chunk size and then calculate spare size

#

hex_chunk=`od -x -A x $image_file | grep -m 1 "1000 [ ]*0000 [ ]*0001 [ ]*0000 [ ]*0000 [ ]*0000 [ ]*ffff [ ]*0000" | sed -e 's/ .*//'`

cd $base_dir

if [ "$hex_chunk" != "" ]

then

dec_chunk=`printf "%d" 0x$hex_chunk`

echo "Chunk size is $dec_chunk bytes in $image_file"

# Spare size

dec_spare=$(($dec_chunk/32))

echo "Spare size calculated to be $dec_spare bytes"

str=`sed '20q;d' tools/unyaffs_files/unyaffs.c`

if [ "$str" != "#define CHUNK_SIZE $dec_chunk" ]

then

echo "Setting chunk size = $dec_chunk in unyaffs.c, line 20"

sed -i -e '20s/.*/#define CHUNK_SIZE '$dec_chunk'/' tools/unyaffs_files/unyaffs.c

fi

str=`sed '21q;d' tools/unyaffs_files/unyaffs.c`

if [ "$str" != "#define SPARE_SIZE $dec_spare" ]

then

echo "Setting spare size = $dec_spare in unyaffs.c, line 21"

sed -i -e '21s/.*/#define SPARE_SIZE '$dec_spare'/' tools/unyaffs_files/unyaffs.c

fi

exit 0

else

echo "Error: Cannot detect chunk size in $image_file"

cd ../..

exit 1

fi