I run ArchLinux ARM on my BBB from the eMMC. I initialize the eMMC using
three scripts I execute on another ARM Linux system (a PogoPlug)
Script 1 - executed on my originating system, partitions/formats the micro
SD card
Script 2 - executed on my originating system, copies the appropriate
ArchLinux files to the micro SD card.
Script 3 - executed on the BBB after I boot from the micro SD card.
Even if you don't use ArchLinux ARM, these scripts may be helpful for
creating your own eMMC flasher. Enjoy.
Script 1 (bbb-fdisk-sd.sh):
# bbb-fdisk-sd.sh
# This script partitions SD media for use as a boot device for a BeagleBone
# or BeagleBone black. The first partition (boot) is sized at 16MB. If you
# want a larger partition, change the code below (look for +16M). This
script
# assumes the device you want to partition is located at /dev/sd?. Make
sure
# you verify the correct device name before proceeding.
DEVICELIST=`ls /dev/sd? 2> /dev/null | sed s:/dev/::`
if [ -z "${DEVICELIST}" ]; then
echo "ERROR: No /dev/sd? devices"
exit
fi
clear
echo Device Choices: $DEVICELIST
echo
while true
do
read -p "Enter device name: " DEVICECHOICE
if echo "$DEVICECHOICE" | grep -q "$DEVICELIST"
then
break
else
echo "ERROR: You entered an invalid device name."
fi
done
echo
while true
do
read -p "Are you sure you want to use /dev/$DEVICECHOICE (answer yes or
no)? " ANSWER
case $ANSWER in
yes ) break;;
no ) exit;;
* ) echo "ERROR: Please answer yes or no.";;
esac
done
fdisk /dev/$DEVICECHOICE << EOF
o
p
n
p
1
+16M
n
p
2
a
1
t
1
e
p
w
EOF
Script 2 (bbb-make-sd-arch.sh):
# bbb-make-sd-arch.sh
# This script is used to create a new (clean) install of ArchLinux for the
BeagleBone or
# BeagleBoneBlack on a microSD card. Verify your media devices before you
proceed. This
# script assumes your media device is /dev/sd?. Ensure you have
partitioned (fdisk) your
# media before proceeding. You will need two partitions. The first
partition does not need
# to be large, but needs to be set to bootable and must be type 'e' which
is FAT 16.
# The second partition is a normal Linux partition, probably ext4. If you
can't mkfs.vfat,
# download the dosfstools (pacman -Sy dosfstools).
clear
DEVICELIST=`ls /dev/sd? 2> /dev/null | sed s:/dev/::`
if [ -z "${DEVICELIST}" ]; then
echo "ERROR: No /dev/sd? devices"
exit
fi
echo Device Choices: $DEVICELIST
echo
while true
do
read -p "Enter device name: " DEVICECHOICE
if echo "$DEVICECHOICE" | grep -q "$DEVICELIST"
then
break
else
echo "ERROR: You entered an invalid device name."
fi
done
echo
while true
do
read -p "Are you sure you want to use /dev/$DEVICECHOICE (answer yes or
no)? " ANSWER
case $ANSWER in
yes) break;;
no) exit;;
*) echo "ERROR: Please answer yes or no.";;
esac
done
BOOTLOADER=BeagleBone-bootloader.tar.gz
ARCHLINUX=ArchLinuxARM-am33x-latest.tar.gz
WORKINGDIR=.
BOOTDEV=/dev/$DEVICECHOICE'1'
BOOTTMP=$WORKINGDIR/boot
ROOTDEV=/dev/$DEVICECHOICE'2'
ROOTTMP=$WORKINGDIR/root
BOOTIMAGE=$ROOTTMP/boot/zImage
BBBSCRIPT=/home/public/bbb-make-emmc-arch.sh
mkfs.vfat -F 16 -n "bootloader" $BOOTDEV
sleep 1
mkfs.ext4 -L "rootfs" $ROOTDEV
sleep 1
mkdir $BOOTTMP
mkdir $ROOTTMP
mount $BOOTDEV $BOOTTMP
mount $ROOTDEV $ROOTTMP
wget http://archlinuxarm.org/os/omap/$BOOTLOADER -O $WORKINGDIR/$BOOTLOADER
sleep 1
wget http://archlinuxarm.org/os/$ARCHLINUX -O $WORKINGDIR/$ARCHLINUX
sleep 1
if which pv &> /dev/null
then
pv $WORKINGDIR/$BOOTLOADER | tar xzf - -C $BOOTTMP
pv $WORKINGDIR/$ARCHLINUX | tar xzf - -C $ROOTTMP
else
tar xvf $WORKINGDIR/$BOOTLOADER -C $BOOTTMP
tar xvf $WORKINGDIR/$ARCHLINUX -C $ROOTTMP
fi
echo "Copying Boot Image"
cp $BOOTIMAGE $BOOTTMP
echo "Copying" $BBBSCRIPT "script to /"
cp $BBBSCRIPT /
echo "Synching"
sync
umount $BOOTTMP
umount $ROOTTMP
rmdir $BOOTTMP
rmdir $ROOTTMP
clear
echo "Upload Complete"
echo
while true
do
read -p "Delete downloaded files (answer yes or no)? " ANSWER
case $ANSWER in
yes )
rm $WORKINGDIR/$BOOTLOADER
rm $WORKINGDIR/$ARCHLINUX
exit
;;
no ) exit;;
* ) echo "ERROR: Please answer yes or no.";;
esac
done
Script 3 (bbb-make-emmc-arch.sh):
# bbb-make-emmc-arch.sh
# This script is used to create a new (clean) install of ArchLinux ARM to
the BeagleBone Black's
# onboard eMMC storage. This script assumes you have booted the BeagleBone
Black using a microSD
# card with the appropriate ArchLinux ARM files and now want to install
ArchLinux in the onboard
# eMMC storage.
BOOTLOADER=BeagleBone-bootloader.tar.gz
ARCHLINUX=ArchLinuxARM-am33x-latest.tar.gz
WORKINGDIR=/tmp
BOOTDEV=/dev/mmcblk1p1
BOOTTMP=$WORKINGDIR/boot
ROOTDEV=/dev/mmcblk1p2
ROOTTMP=$WORKINGDIR/root
BOOTIMAGE=$ROOTTMP/boot/zImage
clear
while true
do
echo "You need the mkfs.vfat format and wget commands."
echo "Use pacman -Sy wget AND pacman -Sy dosfstools (for vfat format)."
echo
read -p "Are these two commands installed (answer yes or no)? " ANSWER
case $ANSWER in
yes) break;;
no) exit;;
*) echo "ERROR: Please answer yes or no.";;
esac
done
mkfs.vfat -F 16 -n "bootloader" $BOOTDEV
sleep 1
mkfs.ext4 -L "rootfs" $ROOTDEV
sleep 1
mkdir $BOOTTMP
mkdir $ROOTTMP
mount $BOOTDEV $BOOTTMP
mount $ROOTDEV $ROOTTMP
wget http://archlinuxarm.org/os/omap/$BOOTLOADER -O $WORKINGDIR/$BOOTLOADER
sleep 1
wget http://archlinuxarm.org/os/$ARCHLINUX -O $WORKINGDIR/$ARCHLINUX
sleep 1
if which pv &> /dev/null
then
pv $WORKINGDIR/$BOOTLOADER | tar xzf - -C $BOOTTMP
pv $WORKINGDIR/$ARCHLINUX | tar xzf - -C $ROOTTMP
else
tar xvf $WORKINGDIR/$BOOTLOADER -C $BOOTTMP
tar xvf $WORKINGDIR/$ARCHLINUX -C $ROOTTMP
fi
echo "Copying Boot Image"
cp $BOOTIMAGE $BOOTTMP
echo "Synching"
sync
umount $BOOTTMP
umount $ROOTTMP
rmdir $BOOTTMP
rmdir $ROOTTMP
clear
while true
do
read -p "Delete downloaded files (answer yes or no)? " ANSWER
case $ANSWER in
yes)
rm $WORKINGDIR/$BOOTLOADER
rm $WORKINGDIR/$ARCHLINUX
exit
;;
no) exit;;
*) echo "ERROR: Please answer yes or no.";;
esac
done
--
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