CI20 Distros

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The CI20 ships with Debian7 installed, but a number of other distributions have been built and run on CI20 already. Those distributions are undergoing preparation for their images to be uploaded to the file store, and the links here will be updated in due course.

As the images are generated the procedure used to build and burn the images will be documented by articles in the CI20 Rootfs Guides category.

How to burn images

For instructions on how to use the below images please see the Dev Zone.


The Debian7 NAND burning image, as used for the production NAND image, is available to download from these links. Note, it is approximately a 1Gbyte download:

To burn the CI20 on-board NAND back to the factory default image download the following SDcard image and follow the instructions on Flashing the NAND Image.

Debian 7 Factory Default 2014-06-25

The default Debian7 NAND image is available here

The rootfs tarball used to create this image is available here

The associated md5sums are

dc330745036cefd853ceb56d09d46334  debian-nand-v2-20140625.img
f0148cf26475fe019c8ed91a11d6c331  rootfs-20140625.tar

Debian 7 2014-09-12

The image is available here. changelog NOTE: DEFAULT UART HEADER CHANGED!

The rootfs tarball used to create this image is available here

The associated md5sum of the image is

fc88a13626003b5df33ee8a3d5bb0e9d  debian_2014_09_12_b.img

Please verify the MD5 of the image you download before using it.

Debian 7 FSF Image 2014-09-12

A Free Software Foundation compatible image (pending review) is available here.

md5sum 8ef04efc2405108dfbf815238a866480 debian_2014_09_12_FSF.img

The changelog for this image is here

Note: This image is based on the newer edition of the Debian7 image.

Debian 7 2015-01-15

The image is available here The rootfs tarball is available here The associated MD5sum is

c0e046144b95b7e4d54753340ac2aa45  debian7_2015_01_15.img
4c03f44272d6b7520123a0dce7e1e1b3  rootfs2015-01-15_16_49_47.tar


Updated SGX binaries from 1.11 to 1.13
Installed openssh client
Installed flowstarterapp for Imagination Flowcloud
Updated kernel with mmc hotplug fix
Added kernel options for usb cameras and usb serial drivers

Debian 7 2015-02-02

The image is available here The rootfs tarball is available here The associated MD5sum is

37a11dda7b6b4a7bfc36d98657933ea4  debian7_2015_02_02.img
a7456979aa9f77ba1c1943be5bef9b2c  rootfs2015-02-02_12_06_04.tar


Updated kernel with adc drivers. Can read AUX1 and AUX2 now using sysfs. 
using 'cat /sys/devices/platform/jz4780-adc/jz4740-hwmon.0/in0_input'
using 'cat /sys/devices/platform/jz4780-adc/jz4740-hwmon.0/in1_input'

Upgrading to Debian 8 / Jessie

Before you upgrade

Before upgrading you must ensure you have a kernel with CONFIG_FHANDLE enabled since the version of udev in jessie now requires it. The kernel supplied in the NAND image does not have this option enabled. You can test if you have it by running

grep 'T sys_open_by_handle_at' /proc/kallsyms

Old kernels will print nothing, up to date kernels will print the symbol address.

After you upgrade:

  • Graphics acceleration will not work (the powervr drivers currently don't work with xorg 1.16).
  • MPlayer will be removed.
  • Your system will be converted to run systemd.


All commands should be run as root.

Move PVR specific xorg.conf out of the way

mv /etc/X11/xorg.conf /etc/X11/xorg.conf.pvr

If you are running the rootfs from an SD card, comment out the ubi boot line in fstab by adding a # at the start of the line

nano /etc/fstab

Remove PVR module from /etc/modules

sed -i 's/pvrsrvkm//' /etc/modules

Update sources.list to point to jessie

sed -i 's/wheezy/jessie/g' /etc/apt/sources.list

Update package lists

apt-get update

Upgrade packages

apt-get dist-upgrade
APT may decide to remove some packages here - look carefully at the list before pressing yes.
During the upgrade you will be asked what to do about a modified version of /etc/lightdm/lightdm.conf. Select N here (selecting Y is ok, but will disable autologin).

To save some space you can remove some old packages by running

apt-get autoremove
apt-get autoclean

If everything goes well, reboot



Android KitKat 4.4 image is available for download.

The image is 1.1Gbyte. You'll need an SD card to flash it on the CI20. Check Flashing the NAND Image

2015-04-07-v0.4 download here

Details on how to make the image are available here How to Make an Android SD Card Flash Image for MIPS CI20


  • Audio over HDMI interface.
  • Audio jack auto-detection has been fixed in Linux kernel. Now we can easily switch audio output from HDMI to headphones and vice versa.
  • Audio over Bluetooth interface.
  • Recording audio.
  • Ethernet settings application has been added.


  • Videos work. Check out in the browser!
  • Takes quite a bit of time for first boot after you flash android. So don't worry :).
  • Instructional video here:-

For further detail check out the Android on the MIPS CI20 page.

Older images

2014-11-26-v0.3 download here


  • Default resolution switched to 720p.

2014-11-20-v0.2 download here


  • NAND storage upgraded to 4Gbyte.
  • SD Card hotplug issue fixed

2014-11-05-v0.1 download here

Old Notes

  • Storage limit to 1Gbyte at the moment.
  • SD card does not auto mount for Android. You can manually mount using mount -t vfat /dev/block/mmcblk0p1 /storage/sdcard1 and view files from commandline. But Android won't detect it..


A Gentoo Linux SDCard image is available on the Gentoo mirrors:


All the instructions are in the README file.

Please find the Gentoo mirrors list here:


Yocto Sato is running on CI20 - you can download the image here

The image is around 200Mbyte. You'll need an SD card to flash it on the CI20. Check Flashing the NAND Image.

The image was made using the steps documented on How to make a Yocto Rootfs for CI20

A few details

  • Serial/Getty is on ttyS0. If you find a fix for getty on ttyS4, please email the list.
  • Display Resolution compiled in kernel is 1024x768 for greater compatibility with monitors.
  • The image uses kernel 3.0.8


Angstrom with a XFCE4 UI is running on the CI20 - you can download the image here

The image is 1Gbyte. You'll need an SD card to flash it on the CI20. Check Flashing the NAND Image.

The image was made using the steps documented on How to make an Angstrom Rootfs for CI20


Arch is running on CI20, and an image is in progress...


This is a small (~70Mb) buildroot image. It boots directly from the sd card and doesn't flash the NAND.

Just dd the image on an sd card. (dd if=image.img of=/dev/sdX). Or windows32diskimager.

It has a minimal X environment too :).

Suitable for checking your board and running memtest.

  • Username ci20
  • Password ci20
  • Root password ci20
  • For some reason, have to login via user ci20 and then su to root if logging in via monitor/tv.


Download [here]

Specific notes fir 2015_03_03: This image has ddr timings tweaked. Purpose. Requesting people to run memtest using this.


OpenWRT support is a work in progress. Check the following links:

Check for detailed status.


OpenELEC (short for "Open Embedded Linux Entertainment Center") is a free and open source embedded operating system providing a complete appliance-like media center software suite that comes with a pre-configured version of Kodi (formerly XBMC) media player and third-party addons with retro video game console emulators and PVR/DVR plugins.

OpenELEC is an extremely small and very fast booting Linux based distribution, primarily designed to be booted from flash memory card such as USB-memory, SD-card, CompactFlash or a solid-state drive, similar to that of the Linux Live distributions but specifically targeted to a minimum set-top box hardware setup based on ARM SoC's or Intel x86 processor and graphics.

Over the years OpenELEC have and have had partnerships with several media player manufacturers and media center system integrates as OEM firmware developers, with OpenELEC maintaining the operating-systems on their hardware.

Check the following links for discussion about CI20: