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Hardware Information

Wi-Fi Extender Reference Targets

Serial Port Access

https://doc.turris.cz/doc/en/troubleshooting/serial_link#turris_omnia

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NOTE:  Wouter Cloetens shared links and information on taking serial connection and flashing OpenWRT image

Setting up Bootloader:

In serial console, press "Enter" key to get into u-boot prompt

Type "version" u-boot command to check the u-boot version

If the version found to be "U-Boot 2015.10-rc2", then type "reset" u-boot command. Then skip this section and move on to sub section(Setting default U-boot environment)

If version is other than U-Boot 2015.10-rc2, follow below steps (derived from https://wiki.debian.org/InstallingDebianOn/TurrisOmnia#Bootloader_update)

• Install a tftp server (eg. tftpd-hpa) on your computer and place the attached uboot-turris-omnia-spl.kwb file into your computer's tftp directory(eg. /srv/tftp/).

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Then, run the following commands at the u-boot prompt on Turris Omnia

dhcp
tftpboot 0x1000000 uboot-turris-omnia-spl.kwb
sf probe
sf update 0x1000000 0 $filesize

Setting default U-boot environment

In serial console, press "Enter" key to get into u-boot prompt

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env default -a
saveenv
reset

Flashing

The Omnia ships with TurrisOS preinstalled. This is an OpenWrt fork with the older Linux 4.4 kernel. It uses btrfs to manage the eMMC flash.

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• upgrade through a "medkit" image through the use of a USB stick and pressing the reset button.
• https://openwrt.org/toh/turris_cz.nic/turris_cz.nic_omnia is not entirely accurate, and cannot complete without access to the serial port, due to an error in the factory initialisation of the U-boot environment. Updated procedure:
  • Remove the casing. Connect a TTL serial interface, see "Serial Port Access" above.
  • Format a USB flash drive as ext2.

  • Download openwrt-18.06.2-mvebu-cortexa9-turris-omnia-sysupgrade.img.gz and omnia-medkit-openwrt-18.06.2-mvebu-cortexa9-turris-omnia-initramfs.tar.gz from http://downloads.openwrt.org/releases/18.06.2/targets/mvebu/cortexa9/ and copy both files to the root of the flash drive.

  • Disconnect other USB devices from the Omnia and connect the flash drive to either USB port. (I have only verified this with the USB port at the front).

  • Hold down the reset button (backside, bottom centre) and plug in the power cord. Wait until the fourth LED lights up (green), then release (before the 5th LED lights up). _{Please click here to see more detail on rescue modes.}

  • Wait approximately 2 minutes for the Turris Omnia to flash itself with the temporary image, during which LEDs will change multiple times.

  • Either use the serial console, or connect a computer to a LAN port (LAN0 to LAN4) of the Turris Omnia with a DHCP client.
    From a computer:

    Code Block
    theme DJango
    ssh root@192.168.1.1

    Then, from the ssh session or a serial console:

    Code Block
    theme DJango
    mount /dev/sda1 /mnt sysupgrade /mnt/openwrt-18.06.2-mvebu-cortexa9-turris-omnia-sysupgrade.img.gz

  • Wait another minute for the final OpenWrt image to be flashed. The Turris Omnia will reboot itself and you can remove the flash drive.

  • After device reboot. You are now running stock OpenWrt 18.06.2.

•  Wouter Cloetens to provide an updated medkit image that fixes the U-boot environment, removing the need to open the casing and connect a serial port.

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root@OpenWrt:~# fdisk /dev/mmcblk0
 
Welcome to fdisk (util-linux 2.32).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
 
Command (m for help): p
Disk /dev/mmcblk0: 7.3 GiB, 7818182656 bytes, 15269888 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x15344058
 
Device         Boot Start    End Sectors   Size Id Type
/dev/mmcblk0p1 *     2048  35327   33280  16.3M  c W95 FAT32 (LBA)
/dev/mmcblk0p2      36864 561663  524800 256.3M 83 Linux

Create a new partitions for RDK-B.

The devicetree database and the Linux kernel are in the FAT32 partition:

root@OpenWrt:~# mount /dev/mmcblk0p1 /mnt
root@OpenWrt:~# ls -l /mnt
-rwxr-xr-x    1 root     root         17353 Aug 17  2018 armada-385-turris-omnia.dtb
-rwxr-xr-x    1 root     root       2445072 Aug 17  2018 zImage

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Reconfigure U-boot to boot from your kernel and root partition.

It is strongly recommend to keep the OpenWrt partition and kernel. If boot fails, it is easy to change the U-boot environment and boot back into OpenWrtinto OpenWrt(Fail safe OS).

Flashing RDKB image (A Yocto Project based Distro)

Follow instruction from wiki page(https://wiki.rdkcentral.com/display/RDK/Wifi-Extender+Yocto+Build+Instructions) to make yocto's RDK-B image from yocto workspace in your PC.

Boot into openwrt based linux system in turris omnia board. Its downlink interface will have 192.168.1.1 IP address and have it connected to your PC.

Create a new partitions for RDK-B.
Create one primary partition for zImage. Create another extended partition for holding logical partitions for rootfs and /nvram.

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$ scp <yocto_workspace>build-turris/tmp/deploy/images/turris/zImage root@192.168.1.1:/tmp
$ scp <yocto_workspace>build-turris/tmp/deploy/images/turris/{"zImage-",""}armada-385-turris-omnia.dtb root@192.168.1.1:/tmp/armada-385-turris-omnia.dtb
$ scp <yocto_workspace>build-turris/tmp/deploy/images/turris/rdkb-generic-broadband-image_default_<image-timestamp>.rootfs.tar.gz root@192.168.1.1:/tmp/

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Now, Turris Omnia will boot with Yocto based RDKB image.

RDK Firmware(Image) upgrade:

Approach 1:

RDK firmware upgrade with XConf server: Firmware upgrade through XCONF server - Turris-Omnia - User Manual - 2020 - M6

Approach 2(Quick):

Copy zImage, dtb file and rootfs files(not *dbg* rootfs file) from PC or VM to /tmp/ directory of Turris Omnia which is currently running RDK Image.

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scp zImage--4.14.22-r0-turris-20200720105910.bin root@<TurrisOmnia-IP>:/tmp/
scp armada-385-turris-omnia.dtb root@<TurrisOmnia-IP>:/tmp/
scp rdkb-generic-broadband-image_default_20200720105910.rootfs.tar.gz root@<TurrisOmnia-IP>:/tmp/

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sh /lib/rdk/TurrisFwUpgrade.sh

Approach 3:

Go back to OpenWrt OS (please refer Fallback to OpenWrt OS section above below ).

Have Ethernet connection from your PC to LAN port of Turris Omnia.

Keep rootfs(rdkb-generic-broadband-image_default_*.rootfs.tar.gz) and , zImage(zImage--4.14.22-r0-turris-*.bin) files and dtb file in home directory of your PC.

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MYPC_IP=192.168.1.83
USER_NAME=manigandan
scp $USER_NAME@$MYPC_IP:*$1* /tmp/
mount /dev/mmcblk0p3 /mnt
mv /tmp/zImage-* /mnt/zImage
mv /tmp/armada-385-turris-omnia.dtb /mnt/
umount /mnt
mount /dev/mmcblk0p5 /mnt
rm -rf /mnt/*
tar -xzf /tmp/rdkb-* -C /mnt/
umount /mnt
reboot

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Turris Omnia will now run upgraded version of Yocto based RDK image.

Fallback to OpenWrt OS(Failsafe):

To fallback to openwrt OS, enter following u-boot commands.

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