Hi leon,

I am trying to run the latest tizen common image in the Firefly 3288 board now.

Firstly I download the ubuntu 14.04 image to the firefly 3288 board using the following command:
sudo upgrade_tool uf ubuntu.img
After downloading completed,the ubuntu desktop is showed successfully.

Then I followed your guide here: https://www.anavi.org/article/173/
It can show the tizen desktop successfully with SD card.
Also I modify the "/dev/mmcblk0p2" in /etc/fstab to "mmcblk0p5" after check the orignal ubuntu partition table.And flash the image to the linuxroot partition specfied in cmdline, it also can boot successfully.

But the image you based is a little old.So I am trying to use the latest tizen common image which is in here:
http://download.tizen.org/snapshots/tizen/common/latest/images/arm-wayland/common-wayland-2parts-armv7l/

I make a 1G img file,and copy the contents from tizen_common.img using the following commands:

dd if=/dev/zero of=linux-rootfs.img bs=1M count=1024
mkfs.ext4 -F -L linuxroot linux-rootfs.img
mount -o loop linux-rootfs.img /opt
mount ~/tizen-common.img /mnt
cp -a /mnt/*  /opt
sync
umount .opt

Also I changed the /etc/fstab ,then I download the new image file to the board again.
but it can not boot successfully.The error is like this:

[ 5.562071] usb 3-1: Product: USB 2.0 Hub [MTT]
[ 5.564770] hub 3-1:1.0: USB hub found
[ 5.566700] hub 3-1:1.0: 4 ports detected
[ 5.740400] EXT4-fs (mmcblk0p5): recovery complete
l)one..742493] EXT4-fs (mmcblk0p5gi m Rntni f /esrites/wica oboerem da. mode. Opts:onnu
Begin: Running /scripts/init-bottom ... done.
[ 5.843130] usb 3-1.1: new low-speed USB device number 3 using usb20_host
[ 5.911638] systemd[1]: Failed to mount cgroup at /sys/fs/cgroup/systemd: No such file or directory
[!!!!!!] Failed to mount API filesystems, freezing.
[ 5.946112] usb 3-1.1: New USB device found, idVendor=046d, idProduct=c077
[ 5.950278] usb 3-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 5.954441] usb 3-1.1: Product: USB Optical Mouse
[ 5.958496] usb 3-1.1: Manufacturer: Logitech
[ 5.965991] input: Logitech USB Optical Mouse as /devices/ff540000.usb/usb3/3-1/3-1.1/3-1.1:1.0/input/input5
[ 5.969338] hid-generic 0003:046D:C077.0001: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Optical Mouse] on usb-ff540000.usb-1.1/input0
[ 6.050324] usb 3-1.4: new low-speed USB device number 4 using usb20_host
[ 6.178990] usb 3-1.4: New USB device found, idVendor=03f0, idProduct=0324
[ 6.199626] usb 3-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 6.205694] usb 3-1.4: Product: HP Basic USB Keyboard
[ 6.209962] usb 3-1.4: Manufacturer: Lite-On Technology Corp.
[ 6.220360] input: Lite-On Technology Corp. HP Basic USB Keyboard as /devices/ff540000.usb/usb3/3-1/3-1.4/3-1.4:1.0/input/input6
[ 6.225163] hid-generic 0003:03F0:0324.0002: input,hidraw1: USB HID v1.10 Keyboard [Lite-On Technology Corp. HP Basic USB Keyboard] on usb-ff540000.usb-1.4/input0
[ 6.443530] iep dpi mode inactivity
[ 10.605771] [otg id chg] last id -1 current id 1
[ 10.627120] PortPower off
[ 10.648022] rk_battery_charger_detect_cb , battery_charger_detect 6
[ 10.753627] Using Buffer DMA mode

I guess the main issue is "systemd[1]: Failed to mount cgroup at /sys/fs/cgroup/systemd: No such file or directory"

Did you met the problem when you did this work?I guess this may be related to the initrd issue about the tizen,Could you give me some suggestions to me? Hope your reply^^ Thanks very much.