format_sdcard

#!/bin/bash


if [ "$(id -u)" != "0" ]; then
   echo "Script must be run as root !"
   exit 0
fi

echo ""
date
echo "***********************************"
echo "Creating Odroid-C1 bootable SD Card"
echo "***********************************"
echo ""

# =====================================================
# ==== P A R A M E T E R S ============================
# =====================================================

# ================================================
# IF YOU WANT TO HAVE BOOT FILES ON EXT4 PARTITION
# AND NOT ON SEPARATE FAT16 PARTITION
# set _boot_on_ext4="yes"
# ================================================
_boot_on_ext4="no"


# *****************************************************
# Set sdcard block device, e.g. sdc, sdi, ...
# You can check with sudo blkid which drive to use
# Partitions on SDCard MUST be UNMOUNTED
# *****************************************************
sdcard="sdg"


# *****************************************************
# Set file systems uuid's for boot and fstab
# *****************************************************
vfatuuid="6E355356"
ext4uuid="e139ce78-9841-40fe-8823-96a304a09859"


# *****************************************************
# SD Card partitions sizes in MB (1024 * 1024 bytes)
# set  ext4size=0  to extend ext4 partition
# to the end of SDCard
# *****************************************************
fatsize=32
ext4size=0


# *****************************************************
# Path to odroid u-boot files
# *****************************************************
BL1="uboot/bl1.bin.hardkernel"
UBOOT="uboot/u-boot.bin"

# ^^^^ P A R A M E T E R S ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

if [ ! -f $BL1 ]; then
    echo "Error: $BL1 is not exist."
    exit 0
fi

if [ ! -f $UBOOT ]; then
    echo "Error: $UBOOT is not exist."
    exit 0
fi


# ==================================
# PREPARE SD CARD FOR ODROID-C1 BOOT
# -------------------------------------------------------------------

if [ -b /dev/$sdcard ]; then
    # Test if requested drive is removable, we do not want to erase fixed drive !
    ISREMOVABLE=`udevadm info -a -n /dev/${sdcard} | grep -o "ATTR{removable}==\"1\""`
    if [ ! "${ISREMOVABLE}" = "ATTR{removable}==\"1\"" ] ; then
		echo "/dev/${sdcard} IS NOT REMOVABLE DRIVE !, Exiting."
		exit 0
    fi
else
    echo "/dev/${sdcard} NOT FOUND !, Exiting."
    exit 0
fi


echo -n "WARNING: SD card $sdcard WILL BE ERASED !, Continue (y/N)?  "
read -n 1 ANSWER

if [ ! "${ANSWER}" = "y" ] ; then
    echo "."
    echo "Canceled.."
    exit 0
fi


umount ${sdcard}* > /dev/null 2>&1
sleep 1

echo ""
echo "Creating bootable SD card $sdcard ..."
echo ""
echo "Erasing SD card..."
dd if=/dev/zero of=/dev/${sdcard} bs=1M count=4 > /dev/null 2>&1
sync
sleep 2

# Create msdos partition table
echo ""
echo "Creating new filesystem on $sdcard..."
echo -e "o\nw" | fdisk /dev/${sdcard} > /dev/null 2>&1
if [ $? -ne 0 ]; then
    echo "ERROR."
    exit 0
fi
sync
echo "  New filesystem created on SD card."

echo ""
echo "Partitioning SD card $sdcard..."

if [ "${_boot_on_ext4}" = "yes" ] ; then
    echo "  Creating ext4"
    sext4=3072
    if [ $ext4size == 0 ]; then
		eext4=""
    else
		eext4=$(expr $ext4size \* 1024 \* 1024 / 512 + $sext4 - 1)
    fi
    echo -e "n\np\n1\n$sext4\n$eext4\nt\n83\nw" | fdisk /dev/${sdcard} > /dev/null 2>&1
    if [ $? -ne 0 ]; then
		echo "ERROR."
		exit 0
    fi
else
    sfat=3072
    efat=$(expr $fatsize \* 1024 \* 1024 / 512 + $sfat - 1)
    echo "  Creating fat & ext4"
    sext4=$(expr $efat + 1)
    if [ $ext4size == 0 ]; then
		eext4=""
    else
		eext4=$(expr $ext4size \* 1024 \* 1024 / 512 + $sext4 - 1)
    fi
    echo -e "n\np\n1\n$sfat\n$efat\nn\np\n2\n$sext4\n$eext4\nt\n1\n6\nt\n2\n83\nw" | fdisk /dev/${sdcard} > /dev/null 2>&1
    if [ $? -ne 0 ]; then
		echo "ERROR."
		exit 0
    fi
fi
echo "  OK."
sync
sleep 2
partprobe -s /dev/${sdcard} > /dev/null 2>&1

#echo -e "p\nq\n" | fdisk /dev/${sdcard}

echo ""
echo "Formating partitions ..."
if [ ! "${_boot_on_ext4}" = "yes" ] ; then
    mkfs -t vfat -n BOOT -i $vfatuuid /dev/${sdcard}1 > /dev/null 2>&1
    if [ $? -ne 0 ]; then
		echo "ERROR formating fat partition."
		exit 0
    fi
    echo "vfat partition formated."
    sync
    echo ""
    partprobe -s /dev/${sdcard} > /dev/null 2>&1
    sleep 2
    mkfs -F -t ext4 -L linux -U $ext4uuid /dev/${sdcard}2 > /dev/null 2>&1
    if [ $? -ne 0 ]; then
		echo "ERROR formating ext4 partition."
		exit 0
    fi
else
    mkfs -F -t ext4 -L linux -U $ext4uuid /dev/${sdcard}1 > /dev/null 2>&1
    if [ $? -ne 0 ]; then
		echo "ERROR formating ext4 partition."
		exit 0
    fi
fi

echo "ext4 partition formated."
partprobe -s /dev/${sdcard} > /dev/null 2>&1
sleep 2
sync

echo ""
echo "Instaling u-boot to $sdcard ..."
dd if=$BL1 of=/dev/${sdcard} bs=1 count=442 > /dev/null 2>&1
if [ $? -ne 0 ]; then
    echo "ERROR installing u-boot."
    exit 0
fi
dd if=$BL1 of=/dev/${sdcard} bs=512 skip=1 seek=1 > /dev/null 2>&1
if [ $? -ne 0 ]; then
    echo "ERROR installing u-boot."
    exit 0
fi
dd if=$UBOOT of=/dev/${sdcard} bs=512 seek=64 > /dev/null 2>&1
if [ $? -ne 0 ]; then
    echo "ERROR installing u-boot."
    exit 0
fi
sync

echo "U-boot installed to $sdcard."
# -------------------------------------------------------------------

sleep 2
mkdir _mnt_ > /dev/null 2>&1

mount /dev/${sdcard}1 _mnt_

if [ $? -ne 0 ]; then
    echo "ERROR mounting partition."
    exit 0
fi

if [ "${_boot_on_ext4}" = "yes" ] ; then
    mkdir -p _mnt_/boot > /dev/null 2>&1
    _bootd="_mnt_/boot/boot.ini"
    _ul1="ext4load mmc 0:1 0x21000000 boot/uImage"
    _ul2="ext4load mmc 0:1 0x22000000 boot/uInitrd"
    _ul3="ext4load mmc 0:1 0x21800000 boot/meson8b_odroidc.dtb"
else
    _bootd="_mnt_/boot.ini"
    _ul1="fatload mmc 0:1 0x21000000 uImage"
    _ul2="fatload mmc 0:1 0x22000000 uInitrd"
    _ul3="fatload mmc 0:1 0x21800000 meson8b_odroidc.dtb"
fi

. uboot_config.sh

sync
umount _mnt_ > /dev/null 2>&1
if [ $? -ne 0 ]; then
    echo "SD CARD $sdcard PREPARED FOR ODROID-UBUNTU BOOT.!"
    echo "ERROR unmounting partition."
    exit 0
fi
rmdir _mnt_ > /dev/null 2>&1


echo ""
echo "SD CARD $sdcard PREPARED FOR ODROID-UBUNTU BOOT.!"
    
# -------------------------------------------------------------------