= <span style="color: rgb(255, 0, 0);">WORKING PROGRESS</span> =
How to get the Ubuntu 12.04.4 LTS in the Nand Flash Memory <br> The Ubuntu project is excited to be working with the ARM ecosystem to port Ubuntu for ARM-based devices. This work fits with our goals of making Ubuntu available as an open platform to as many people as possible.
== Prerequisites ==
First you need follow the[[IGEPv2 Ubuntu Distro|IGEPv2 Ubuntu Distribution]] howto and boot the IGEPv2 / IGEP COM Module / IGEP COM Proton using the Ubuntu distributiondescribed in the howto.
== Where are the Nand Flash partitions? ==
== Erase the partitions ==
It's very important erase the partitions before try to write anything into the flash memory.We will erase all NAND partitions using these commands: <pre>$ flash_eraseall /dev/mdt0 mtd0
$ flash_eraseall /dev/mtd1
$ flash_eraseall /dev/mtd2
</pre>
==Install the Bootloader==
Download the writeloader binary package from [http://downloads.isee.biz/pub/isee-releases/ubuntu/ubuntu-12.04.04-lts-armel-armhf/isee-writeloader-bin-armel_0.01_armel.deb here]ARMEL version or from [http://downloads.isee.biz/pub/isee-releases/ubuntu/ubuntu-12.04.04-lts-armel-armhf/isee-writeloader-bin-armhf_0.01_armhf.deb here]if you are using hard float version.
After download the appropriate package we're ready for install the bootloader in the internal flash
ARMEL version
<pre>$ writeloader-armel -i /boot/MLO -o /dev/mtd0</pre>
ARM Hard float version
<pre>$ writeloader-armhf -i /boot/MLO -o /dev/mtd0</pre>
== Install the kernel (first boot) ==
We must create a jffs2 partition for the boot device, we will use this command:
<pre>$ mount -t jffs2 /dev/mtdblock1 /mnt</pre>
Now we can copy the boot content inside as
<pre>$ cd /mnt
$ cp /boot/igep.ini .
$ cp /boot/zImage .
</pre>
Now we will edit the file /boot/igep.ini (using nano) due we must specify the root boot partition.<br> Find inside the file any line similar to this one and comment it:
;--- Configure MMC boot ---
Change:
<pre>root=/dev/mmcblk0p2 rw rootwait</pre>
to
<pre>;root=/dev/mmcblk0p2 rw rootwait</pre>
And now we will activate the rootfs as ubi, you should locate these commented lines:
;--- Configure UBI FS boot ---
<pre>;ubi.mtd=2
;root=ubi0:igep0020-rootfs
;rootfstype=ubifs</pre>
And uncomment the three lines as:
<pre>ubi.mtd=2
root=ubi0:igep0020-rootfs
rootfstype=ubifs</pre>
At leatest save the file.
and after that we can unmount the device as
<pre>$ cd ..
$ umount /mnt</pre>
==Install the Rootfs (Using Ubi filesystem)==
a) Format the partition with ubi
<pre>$ ubiformat /dev/mtd2</pre>
b) Attach the device
<pre>$ ubiattach -p /dev/mtd2</pre>
c) Create the ubi volume
<pre>$ ubimkvol /dev/ubi0 -N rootfs -s 486MiB</pre>
d) Download the [http://downloads.isee.biz/pub/isee-releases/ubuntu/ubuntu-12.04.04-lts-armel-armhf/ubuntu-12.04.04-lts-isee-igep00x0-20140606-armel.ubi.img ubi ubuntu 12.04.4 LTS armel image] or [http://downloads.isee.biz/pub/isee-releases/ubuntu/ubuntu-12.04.04-lts-armel-armhf/ubuntu-12.04.04-lts-isee-igep00x0-20140606-armhf.ubi.img ubi ubuntu 12.04.4 LTS armhf image][http://downloads.isee.biz/pub/distros/ubuntu/ubuntu-12.04.04-lts-isee-igep00x0-20140606-armhf.ubi.img ]
'''NOTE''': This image is generated using this command:
<pre>$ mkfs.ubifs -r ubuntu-12.04.04-lts-isee-igep00x0-armel/ -m 2048 -e 129024 -c 4044 -o ubuntu-12.04.04-lts-isee-igep00x0-20140606-armel.ubi.img
</pre>
Where:
== Install ubuntu-12.04.04-lts-isee-igep00x0-armel: Is the Bootloader ==rootfs uncompressed directory
Download the writeloader binary package from [http://downloadsubuntu-12.isee04.biz/pub/distros/ubuntu/isee-writeloader04-binlts-armel_0.01_armel.deb here] ARMEL version or from [http://downloads.isee.biz/pub/distros/ubuntu/isee-writeloaderigep00x0-bin20140606-armhf_0armel.01_armhf.deb here] if you are using hard float versionubi. img : Is the ubi generated image
After download e) Copy the ubi ubuntu image inside your board You can use ssh (the appropiate package we're ready for image has a openssh server installed) or you can install wget tool and download the bootloader in the internal flashimage directly.
ARMEL versionf) Install the ubi ubuntu image if you want to use the armel image do: <pre>$ ubiupdatevol /dev/ubi0_0 /root/ubuntu-12.04.04-lts-isee-igep00x0-20140606-armel.ubi.img</pre>or the hard float alternative <pre>$ ubiupdatevol /dev/ubi0_0 /root/ubuntu-12.04.04-lts-isee-igep00x0-20140606-armhf.ubi.img</pre>g) Mount the ubi partition and verify the content <pre>$ mount -t ubifs ubi0:rootfs /mnt/$ls -aldrwxrwxr-x 21 igep igep 1376 Jun 5 15:06 .drwxrwxr-x 22 igep igep 4096 Jun 9 11:11 ..drwxr-xr-x 2 root root 6848 Jun 5 15:29 bindrwxr-xr-x 2 root root 160 Apr 19 2012 bootdrwxr-xr-x 4 root root 5824 Jun 3 15:04 devdrwxr-xr-x 50 root root 7624 Jun 5 16:06 etcdrwxr-xr-x 4 root root 288 Jun 5 15:23 homedrwxr-xr-x 11 root root 2056 Jun 5 15:21 libdrwxr-xr-x 2 root root 160 Jun 3 15:02 mediadrwxr-xr-x 2 root root 160 Apr 19 2012 mntdrwxr-xr-x 2 root root 160 Jun 3 15:02 optdrwxr-xr-x 2 root root 160 Apr 19 2012 procdrwx------ 3 root root 440 Jun 5 15:54 rootdrwxr-xr-x 6 root root 616 Jun 5 15:14 rundrwxr-xr-x 2 root root 8256 Jun 5 15:21 sbindrwxr-xr-x 2 root root 160 Mar 5 2012 selinuxdrwxr-xr-x 2 root root 160 Jun 3 15:02 srvdrwxr-xr-x 2 root root 160 Apr 14 2012 sysdrwxrwxrwt 3 root root 224 Jun 5 16:06 tmpdrwxr-xr-x 10 root root 672 Jun 3 15:02 usrdrwxr-xr-x 11 root root 864 Jun 3 15:02 var</pre> h) Edit fstab for "boot" partition After login edit the file: /mnt/etc/fstab and change this line: <pre>LABEL="boot" /boot vfat defaults 0 0</pre>to <pre>/dev/mtdblock1 /boot jffs2 defaults 0 0</pre>Save the file. i) Umount the ubi partition <pre>$ umount /mnt</pre> [[Category:Ubuntu]][[Category:Software distributions]] == Boot from Flash (first time) == Unplug the power cord and eject the microsd card then plug the power cord again. <pre> * Loading cpufreq kernel modules... [ OK ] * CPU0... [ OK ] * CPUFreq Utilities: Setting ondemand CPUFreq governor... Ubuntu 12.04.4 LTS igep00x0 ttyO2 igep00x0 login:</pre> Use the same root password ("letmein" - is the default) Mount manually the boot partition with this command: <pre>$ mount -t jffs2 /dev/mtdblock1 /boot </pre> After mount the boot partition go to /root/packages and install the kernel with: <pre>$ dpkg -i linux-image-2.6.37_0009.isee_armel.deb</pre> and after that install the wifi firmware with <pre>$ dpkg -i igep-fw-wifi-marvell-8686_0.1_all.deb</pre> At leatest go to /boot directory and copy the file vmlinuz-2.6.37 as zImage <pre>$ cd /boot $ cp vmlinuz-2.6.37 zImage </pre> Now you can reboot the board ... after that you've the ubuntu installed into the Nand Flash memory == Known issues ===== ISSUE - Booting device shows: The disk drive for /boot is not ready yet or not present. ===During the reboot process the console will show you this message: <pre>The disk drive for /boot is not ready yet or not present.Continue to wait, or Press S to skip mounting or M for manual recovery</pre> We will skip the /boot mount at this time (press 's') and the boot process will continue showing: <pre>Skipping /boot at user requestmodprobe: FATAL: Could not load /lib/modules/2.6.37/modules.dep: No such file or directory modprobe: FATAL: Could not load /lib/modules/2.6.37/modules.dep: No such file or directory * Loading cpufreq kernel modules... [ OK ] * CPU0... [ OK ] * CPUFreq Utilities: Setting ondemand CPUFreq governor... Ubuntu 12.04.4 LTS igep00x0 ttyO2 igep00x0 login:</pre>
After login edit the file: /etc/fstab and change this line: <pre>
$ writeloader-armel -i LABEL="boot" /boot
vfat defaults 0 0</
MLO -o pre> to <pre>/dev/
mtd0mtdblock1 /boot jffs2 defaults 0 0</pre>
Save the file.
ARM Hard float version
<pre>$ writeloader-armhf -i /boot/MLO -o /dev/mtd0</pre>[[Category:Ubuntu]][[Category:IGEPv2]]
