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#!/bin/bash
# Usage ./makeSD.sh /dev/sdx hwpack rootfs

logfile=a1x-media-create.log
hwpack_update_only=0

checkSyntax () {
if [ -z $1 ] | [ -z $2 ] | [ -z $3 ]; then
echo "Usage: $0 [device] [hwpack] [rootfs]"
                echo "Write norootfs for [rootfs] if you want to only update"
                echo "u-boot, script.bin, the kernel and modules"
exit 1
fi

if [ ! -e $1 ]; then
echo "Invalid device: $1"
exit 1
fi

if [ ! -f $2 ]; then
echo "File $2 not found"
exit 1
fi
if [ $3 != norootfs ]; then
if [ ! -f $3 ]; then
echo "File $3 not found"
exit 1
fi
else
hwpack_update_only=1;
        fi
}

umountSD () {
partlist=`mount | grep $1 | awk '{ print $1 }'`
for part in $partlist
do
sudo umount $part
done
}

partitionSD () {
    devicename=${1##/*/}
    subdevice=$1;
    if [ ${devicename:0:6} = "mmcblk" ]; then
subdevice="${1}p"
    fi

if [ ${devicename:0:4} = "loop" ]; then
subdevice="${1}p"
    fi

echo "Delete Existing Partition Table"
sudo dd if=/dev/zero of=$1 bs=1M count=1 >> ${logfile}

echo "Creating Partitions"
sudo parted $1 --script mklabel msdos >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to create label for $1"
exit 1
fi
echo "Partition 1 - ${subdevice}1"
sudo parted $1 --script mkpart primary fat32 2048s 16MB >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to create ${subdevice}1 partition"
exit 1
fi
vfat_end=` sudo fdisk -lu $1 | grep ${subdevice}1 | awk '{ print $3 }' `
ext4_offset=`expr $vfat_end + 1`
echo "Partition 2 (Starts at sector No. $ext4_offset)"
sudo parted $1 --script mkpart primary ext4 ${ext4_offset}s -- -1 >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to create ${subdevice}2 partition"
exit 1
fi
echo "Format Partition 1 to VFAT"
sudo mkfs.vfat -I ${subdevice}1 >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to format ${subdevice}1 partition"
exit 1
fi
echo "Format Partition 2 to EXT-4"
sudo mkfs.ext4 ${subdevice}2 >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to format ${subdevice}2 partition"
exit 1
fi
}

extractHWPack () {
    echo "Extracting HW Pack $1"
    mkdir -p hwpack
    pushd hwpack
    7z x ../$1 >> ${logfile}
    popd
}

extractRootfs () {
    echo "extracting Rootfs $1"
    mkdir -p rootfs.tmp
    pushd rootfs.tmp
    fileext=`echo $1 | sed 's/.*\.//'`
    echo "File Extension ${fileext}"
    if [ ${fileext} == "bz2" ]; then
sudo tar xjf ../$1
    elif [ ${fileext} == "gz" ]; then
sudo tar xzf ../$1
    elif [ ${fileext} == "7z" ] | [ ${fileext} == "lzma" ]; then
sudo 7z x ../$1
    elif [ ${fileext} == "xz" ]; then
sudo tar xJf ../$1
    else
echo "Unknown file extension: ${fileext}"
        popd
exit 1
    fi
popd
}

copyUbootSpl ()
{
echo "Copy U-Boot SPL to SD Card"
sudo dd if=$2 bs=1024 of=$1 seek=8
}

copyUboot ()
{
echo "Copy U-Boot to SD Card"
sudo dd if=$2 bs=1024 of=$1 seek=32
}

mountPartitions ()
{
    devicename=${1##/*/}
    subdevice=$1;
    if [ ${devicename:0:6} = "mmcblk" ]; then
subdevice="${1}p"
    fi

if [ ${devicename:0:4} = "loop" ]; then
subdevice="${1}p"
    fi

echo "Mount SD card partitions"
mkdir -p mntSDvfat mntSDrootfs >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to create SD card mount points"
cleanup
fi
echo "Mount VFAT Parition (SD)"
sudo mount ${subdevice}1 mntSDvfat >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to mount VFAT partition (SD)"
cleanup
fi
echo "Mount EXT4 Parition (SD)"
sudo mount ${subdevice}2 mntSDrootfs >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to mount EXT4 partition (SD)"
cleanup
fi
}

umountPart() {
if [ -d $1 ]; then
mounted=`mount | grep $1`
if [ ! -z mounted ]; then
echo "Umount $2"
sudo umount $1 >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to umount $2)"
else
echo "Delete $1"
rm -rf $1 >> ${logfile}
fi
else
echo "Delete $1"
rm -rf $1 >> ${logfile}
fi
fi
}

copyData ()
{
echo "Copy VFAT partition files to SD Card"
sudo cp hwpack/kernel/uImage mntSDvfat >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to copy VFAT partition data to SD Card"
cleanup
fi
sudo cp hwpack/kernel/*.bin mntSDvfat/script.bin >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to copy VFAT partition data to SD Card"
cleanup
fi
if [ -f hwpack/kernel/*.scr ]; then
sudo cp hwpack/kernel/*.scr mntSDvfat/boot.scr >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to copy VFAT partition data to SD Card"
cleanup
fi
fi
if [ ${hwpack_update_only} -eq 0 ]; then
echo "Copy rootfs partition files to SD Card"
            if [ -d rootfs.tmp/etc ]; then
echo "Standard rootfs"
sudo cp -a rootfs.tmp/* mntSDrootfs >> ${logfile}
            elif [ -d rootfs.tmp/binary/boot/filesystem.dir ]; then
echo "Linaro rootfs"
sudo cp -a rootfs.tmp/binary/boot/filesystem.dir/* mntSDrootfs >> ${logfile}
            else
echo "Unsupported rootfs"
               exit 1
            fi
fi
if [ $? -ne 0 ]; then
echo "Failed to copy rootfs partition data to SD Card"
cleanup
fi
echo "Copy hwpack rootfs files"
# Fedora uses a softlink for lib. Adjust, if needed.
if [ -L mntSDrootfs/lib ]; then
# Find where it points. For Fedora, we expect usr/lib.
DEST=`/bin/ls -l mntSDrootfs/lib | sed -e 's,.* ,,'`
if [ "$DEST" = "usr/lib" ]; then
mv hwpack/rootfs/lib hwpack/rootfs/usr
fi
fi
sudo cp -a hwpack/rootfs/* mntSDrootfs >> ${logfile}
if [ $? -ne 0 ]; then
echo "Failed to copy rootfs hwpack files to SD Card"
cleanup
fi
}

cleanup ()
{
        if [ -d hwpack ]; then
rm -rf hwpack
        fi
if [ -d rootfs.tmp ]; then
sudo rm -rf rootfs.tmp
        fi
umountPart mntSDvfat "VFAT Partition (SD)"
umountPart mntSDrootfs "EXT4 Partition (SD)"
exit
}

# "main"
echo "a1x-media-create log file" > ${logfile}
checkSyntax $1 $2 $3
umountSD $1
if [ ${hwpack_update_only} -eq 0 ]; then
partitionSD $1
fi
extractHWPack $2
if [ ${hwpack_update_only} -eq 0 ]; then
extractRootfs $3
fi
copyUbootSpl $1 hwpack/bootloader/sunxi-spl.bin
copyUboot $1 hwpack/bootloader/u-boot.bin
mountPartitions $1
copyData
cleanup
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