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1) Keep all the below files in same location:
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i) Broadband image to be flashed
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ii) Video image to be flashed
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iii) extract.sh
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#--------------------------------------------------------------------------------------------------
# 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 |
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iv) multiSDcard_partition.sh
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# 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 |
v) 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 |
6.vi) Create a file (For ex. sudo vi sd_part_size) where all the SD card partition names and their respective sizes are mentioned
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SD card size mentioned in input text file should always be in GB but with format as provided in the steps mentioned
Minimum 8GB SD card is required to test this feature