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1.  Broadband image to be flashed
2.  Video image to be flashed
3.  extract.sh script file    

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1. sh 

   
   

   Code Block
   language bash title

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1. extract.sh collapse

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1. true

   #-------------------------------------------------------------------------------------------------- # Extract meta information of Downloaded image #-------------------------------------------------------------------------------------------------- mkdir -p extblock fdisk -u -l $1 > extblock/sector.txt linux_sector=`tail -2 extblock/sector.txt | tr -s ' ' | cut -d'*' -f2 | cut -d' ' -f2 | head -n1` linux_offset=$((linux_sector*512)) rootfs_sector=`tail -2 extblock/sector.txt | tr -s ' ' | cut -d'*' -f2 | cut -d' ' -f2 | tail -1` rootfs_offset=$((rootfs_sector*512)) mkdir -p extblock/linux_data mkdir -p extblock/rootfs_data mkdir -p extblock/vlinux_backup_data mkdir -p extblock/vrootfs_backup_data #sudo mount /dev/mmcblk0p1 extblock/bank0_linux #-------------------------------------------------------------------------------------------------- # Loop mount + Extract kernel and bootload data of Downloaded image to storage area #-------------------------------------------------------------------------------------------------- sudo mount -o loop,offset=$linux_offset $1 extblock/linux_data cp -R extblock/linux_data/* extblock/vlinux_backup_data/ sudo umount extblock/linux_data rm -rf extblock/linux_data #-------------------------------------------------------------------------------------------------- # Loop mount + Extract rootfs data of Downloaded image to storage area #-------------------------------------------------------------------------------------------------- sudo mount -o loop,offset=$rootfs_offset $1 extblock/rootfs_data cp -R extblock/rootfs_data/* extblock/vrootfs_backup_data sudo umount extblock/rootfs_data rm -rf extblock/rootfs_data

2.  multiSDcardmultiSDcard_partition.sh

   
   

   Code Block
   language bash title multiSDcard_partition collapse true
   # This code is for partitioning and image flashing into multiple SD cards echo Please enter the input arguments in this order : bash partition.sh bb_image video_image SDcardDetail_filename echo Please keep the script extract.sh in the same folder # Get user input for Broadband and Video image and SD card partition names and their respective sizes echo Broadband image : $1 echo Video image : $2 echo SDcard details filename : $3 echo Deleting few folders if they are pre-existing... sudo rm -rf videomnt/ sudo rm -rf extblock/ echo Video image is going to be extracted... sudo sh extract.sh $2 sudo mkdir videomnt loopcnt=1 while IFS=' ' read -r part_name sdcard_size do sudo mkdir videomnt/videomnt'_'$loopcnt dir_name='videomnt/videomnt''_'$loopcnt echo $dir_name echo Calling the thread script which will paralleley execute for multiple SD cards... sudo bash threadSD.sh $1 $part_name $sdcard_size $dir_name & loopcnt=`expr $loopcnt + 1` done < $3 # Check file inside videomnt is empty or not cd videomnt while true do for file in *; do echo Check for file present in the directory... done if [ "$file" == "*" ] then echo All SD card partitioning and image flashing are completed !! # Deleting temporary folders. cd .. sudo rm -rf videomnt sudo rm -rf extblock/ exit 1 fi sleep 60 sleep_cnt=`expr $sleep_cnt + 1` if [ "$sleep_cnt" == "10" ] then echo Multisd card flashing failed due to slow processing or error. Increase sleep count thresold sleep_cnt. exit 1 fi done

       
3. threadSD.sh

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# This program implements thread functionality for better performance for multiple SD card partitioning and image flashing
# Input arguments
bb_image=$1
part_name=$2
sdcard_size=$3
dir_name=$4
echo Going to flash the Broadband image in SD card which loaded in $part_name ...
`sudo dd if=$bb_image of=$part_name bs=4M`
echo Broadband Image flashed in SD card !!
echo SD card partitioning is going to start !!
sudo parted $part_name --script print
sudo parted $part_name --script resizepart 2 2048
sudo parted $part_name --script print free
sudo parted $part_name --script mkpart primary ext4 2049 4096
sudo parted $part_name --script print free
sd_size=$sdcard_size'GB'
sudo parted $part_name --script mkpart primary ext4 4097 $sd_size
sudo parted $part_name --script print
sudo parted $part_name --script quit
part3=$part_name'3'
part4=$part_name'4'
sudo mkfs.ext4 $part3
sudo mkfs.ext4 $part4
echo Video image is going to be copied in the extended partition ...
sudo mount $part4 $dir_name
sudo cp -r extblock/v* $dir_name/
sudo cp -r extblock/vrootfs_backup_data/* $dir_name/
echo Video image is stored in extended partition !!
sleep 10 
sudo umount $dir_name
sleep 10
echo SD card unmounted.
echo Partitioning and Image flashing in the SD card mounted in $part_name is Completed !!!
sudo rm -rf $dir_name

1. Create a file (For ex. sudo vi sd_part_size) where all the SD card partition names and their respective sizes are mentioned

2) Connect all the SD cards with host PC and execute the command : sudo fdisk -l  . It will list all the SD card partitions with their respective sizes

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