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ODRDOID Snappy builder

Scripts to build Ubuntu Snappy OEM and device part for ODROID C1.


To build all parts, a couple of dependencies are required. On Ubuntu you can install all build dependencies with the following command.

sudo apt-get install build-essential u-boot-tools lzop debootstrap debootstrap gcc-arm-linux-gnueabihf


A Makefile is provided to build U-Boot, Kernel and Initrd from source. The sources will be cloned into local folders if not there already.

The U-Boot provided by Hardkernel is lacking features to support Ubuntu Snappy and is based on a very old U-Boot version. For now, i have backported the missing required features in my own U-Boot tree.

Similar to U-Boot, the Kernel provided by Hardkernel is lacking latest AppArmor support. I have a ODROIDC Kernel tree with the changes for ODROIDC from Hardkernel merged together with AppArmor upstream.

To build it all, just run make. This will produce a oem snap odroidc_x.y_all.snap and a device-odroidc.tar.gz device part, which can be used to build your own Ubuntu Snappy image for ODROID C1.

Build OEM snap

You can build the OEM snap seperately too. The OEM snap contains the U-Boot, so make sure you have build the U-Boot first with make u-boot.

make oem

The OEM snap, contains also a boot.ini which overwrites certain variables to make Snappy work with the U-Boot v2011.03. This is quite hacky but for now seems to be the only possible option. In addition, the OEM snap contains the binary proprietary boot loader code which bootstraps the SOC. On build, this boot code is split up as required by the hardware platform.

Build device part

Of course the device part can be built seperately as well. The device part contains the Linux kernel and modules, so make sure to have built the Linux Kernel first with make linux.

make device

The device part contains the Linux Kernel in the U-Boot compatible format, the compiled device tree, the Kernel modules and the initial ram disk. As there does not seem to be any reasonable way to build the initrd, it is extracted from the preinstalled Ubuntu Snappy Core tar and repacked without Kernel and modules.

Build ODROID-C development image

Make sure you have build the OEM snap and the device part first. You will also need to have the snappy-tools installed. Then you can simply create the image with ubuntu-device-flash.

sudo ubuntu-device-flash core \
	--channel stable \
	--oem odroidc_0.5_all.snap \
	--device-part device-odroidc_0.5.tar.xz \
	--developer-mode \
	-o odroidc-15.04-stable-dev.img \

Build ODROID-C image for production

To build an Ubuntu Snappy image without developer mode, the OEM snap needs to come from the store. The ODROID-C oem snap is available in the store as odroidc.longsleep. You still need to build a device tarball.

sudo ubuntu-device-flash core \
	--channel stable \
	--oem odroidc.longsleep \
	--device-part device-odroidc_0.5.tar.xz \
	-o odroidc-15.04-stable.img \

Flash to SD card

Flash this to SD or eMMC and your ODROID will boot into Snappy. DHCP will be used for ethernet networking. Default user is ubuntu with password ubuntu.


-- Simon Eisenmann


Build Ubuntu Snappy OEM snap and device part for ODROID C1.






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