Debian-jessie-armel-odroidxu

Image Files

First a reminder about my images. *.img.xz means it is a compressed multi-partition image. You need to use xz to decompress it before writing it to SD Card.

• .rootfs.tgz is just the root file system partition contents. Only needed to quickly get back to the original flash contents
• .boot.tgz is just the boot partition contents. Only needed in case you wreck something and can no longer boot.
• .md5sum are md5 checksum files you <should> use to make sure the associated file was downloaded properly.

debian-jessie-armel-base-7.1-odroidxu

Features

Runs only on odroidxu

Debian Jessie. soft-floating point only (armel)

linux-3.4.75 from HK

Follows layout of HK supported Debian images

Issues

Do not run kernel-update.sh. It wrecks the /boot/uInitrd file. (I saved a copy in /root/boot-backup)

# Install this missing package so kernel-update.sh will work
apt-get install initramfs-tools
# Mount the boot partition as read/write to let kernel-update.sh write files
mount -o remount,rw /boot

There are kernel complaints on initialization:

s5p_mfc_load_firmware:179: Firmware is not present in the /lib/firmware directory nor compiled in kernel.

Files

Look for the files here: http://odroid.us/odroid/odroidxu/debian/

Details on how the image was built are here: debian-jessie-armel-7.1-odroidxu Build Notes

Kernel Build

There is some issue with the default default config from github, it will not compile. Here is a snippet showing how I worked around it

// Fetch kernel source
mkdir -p /usr/src 2>/dev/null
cd /usr/src/
git clone --depth 1 https://github.com/hardkernel/linux.git -b odroidxu-3.4.y linux-3.4.y
#
cd linux-3.4.y
# pick up configuration that will build
wget http://odroid.us/odroid/odroidxu/patches/odroidxu_ubuntu_more_netfilter_stuff 
cp odroidxu_ubuntu_more_netfilter_stuff  arch/arm/configs
# Use the new config
make odroidxu_ubuntu_more_netfilter_stuff 
# make it
make -j8
# ...

Add-ons

This section is for items added on to the base image

hwcomposer

We need a daemon to take care of making video data in the framebuffer show up on the HDMI output. This is called exynos5-hwcomposer. I built it natively on the odroidxu and created a Debian package that others can use. (this package is only for odroidxu and only for armel -- soft floating point). The as-built tarball is in the same directory in case you want to rebuild from source.

Get and install the package as root user on the odroidxu:

wget http://odroid.us/odroid/odroidxu/debian/packages/exynos5-hwcomposer-3.4.75-1_armel.deb
dpkg -i exynos5-hwcomposer-3.4.75-1_armel.deb
<pre>

=== Steps ===
You don't need to go through these steps if you are able to use the package mentioned above (exynos5-hwcomposer-3.4.75-1_armel.deb)
I found mdjr's instructions on how to build hwcomposer on the forum: [http://forum.odroid.com/viewtopic.php?f=61&t=2207 http://forum.odroid.com/viewtopic.php?f=61&t=2207]

This is what I did:
<pre>
# Get latest version
git clone --depth 0 https://github.com/hardkernel/linux.git -b odroidxu-3.4.y odroidxu-3.4.y
cd odroidxu-3.4.y/tools/hardkernel/exynos5-hwcomposer
sh autogen.sh
./configure --prefix=/usr
make -j5

Edit /etc/rc.local so it starts exynos5-hwcomposer at boot, The sleep is necessary to give a chance for other startup processing to be done. I was finding that sometimes hwcomposer would not start -- or I would be nothing on the HDMI

# ...
# By default this script does nothing.

sleep 5
# Start hwcomposer to route framebuffer output to HDMI
/usr/bin/exynos5-hwcomposer & 

# Mount the boot partition 
mount -o ro /dev/mmcblk0p1 /boot
# ...