Hardware:
- SoC: RTL9313
- Memory: 512MB
- Flash: SPI-NOR 32MB (GigaDevice GD25Q256EFIR)
- Ethernet: 12x 1/2.5/10 Gbps (SFP+)
- LED/Keys (GPIO): 1x/1x
- UART: "Console" port on the front panel
- type: RS-232C
- connector: RJ-45
- settings: 9600n8 / 115200n8
- Watchdog: Diodes PT7A7514WE
- Monitoring: LM75A
- Power: 100-240 VAC 50/60 Hz C13/C14
Important notes:
---------------
* the device uses 9600 Baud by default but this extremely slows down the
device when using the serial console. OpenWrt is configured to use
115200 Baud. If you need to enter the bootloader, you need to use 9600
Baud.
* PT7A7514WE watchdog is fed through hardware-assisted SYS_LED. However,
the bootloader seems to deactivate that again during autoboot. There's
a quirk in early arch setup for this.
* a kernel binary "nos.img" needs to be stored into JFFS2 filesystem
using 4KiB erase block instead of 64KiB.
* V1 is the version with the 19"-sized case. As of 2026, there's a newer
version with a narrow case.
Flash instructions using initramfs image:
-----------------------------------------
(mostly taken from 0dc0b98295)
1. Prepare TFTP server with an IP address in 192.168.2.0/24.
2. Connect your PC to Port 1 on SKS8300-12X.
3. Power on SKS8300-12X and interrupt autoboot by Ctrl + B.
4. Login to the vendor CLI by Ctrl + F and "diagshell_unipoe_env" as password.
5. Switch baudrate to 115200 by running a command and then reconnect
with different settings:
baudrate 115200
6. Switch to U-Boot CLI by "debug_unish_env".
7. Enable Port 1 with the following commands:
rtk 10g 0 fiber1g # (or fiber10g if 10GBase-*R)
rtk ext-devInit 0 # init RTL8231 that holds SFP GPIOs
rtk ext-pinSet 2 0 # set tx-disable of port 1 to LOW
8. Transfer initramfs image via TFTP and boot it:
tftpboot 0x82000000 <serverip>:<image name>
bootm 0x82000000
9. On the initramfs image, backup the stock firmware if needed.
10. Upload (or download) sysupgrade image to the device.
11. Erase "firmware" partition to cleanup JFFS2 of stock FW:
mtd erase firmware
12. Perform sysupgrade with the sysupgrade image.
13. Wait until the flash completes and the system reboots into OpenWrt.
Reverting to stock firmware:
----------------------------
(taken from 0dc0b98295)
1. Prepare OpenWrt SDK to use the mkfs.jffs2 tool contained in it
Note: the official mkfs.jffs2 tool in mtd-utils doesn't support 4KiB
erase size and not usable for SKS8300-8X
2. Create a directory for working
3. Download official firmware for SKS8300-8X from XikeStor's official
website
4. Rename the downloaded firmware to "nos.img" and place it to the
working directory
5. Create a JFFS2 filesystem binary with the working directory
/path/to/mkfs.jffs2 -p -b -U -v -e 4KiB -x lzma \
-o nos.img.jffs2 -d /path/to/working/dir/
6. Upload the created JFFS2 filesystem binary to the device
7. Erase the "firmware" partition
mtd erase firmware
8. Write the JFFS2 filesystem binary to the "firmware" partition
mtd write /path/to/nos.img.jffs2 firmware
9. After writing, reboot the device by power cycle
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/21922
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.
Sunshine!
Download
Built firmware images are available for many architectures and come with a package selection to be used as WiFi home router. To quickly find a factory image usable to migrate from a vendor stock firmware to OpenWrt, try the Firmware Selector.
If your device is supported, please follow the Info link to see install instructions or consult the support resources listed below.
An advanced user may require additional or specific package. (Toolchain, SDK, ...) For everything else than simple firmware download, try the wiki download page:
Development
To build your own firmware you need a GNU/Linux, BSD or macOS system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.
Requirements
You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.
binutils bzip2 diff find flex gawk gcc-6+ getopt grep install libc-dev libz-dev
make4.1+ perl python3.7+ rsync subversion unzip which
Quickstart
-
Run
./scripts/feeds update -ato obtain all the latest package definitions defined in feeds.conf / feeds.conf.default -
Run
./scripts/feeds install -ato install symlinks for all obtained packages into package/feeds/ -
Run
make menuconfigto select your preferred configuration for the toolchain, target system & firmware packages. -
Run
maketo build your firmware. This will download all sources, build the cross-compile toolchain and then cross-compile the GNU/Linux kernel & all chosen applications for your target system.
Related Repositories
The main repository uses multiple sub-repositories to manage packages of
different categories. All packages are installed via the OpenWrt package
manager called opkg. If you're looking to develop the web interface or port
packages to OpenWrt, please find the fitting repository below.
-
LuCI Web Interface: Modern and modular interface to control the device via a web browser.
-
OpenWrt Packages: Community repository of ported packages.
-
OpenWrt Routing: Packages specifically focused on (mesh) routing.
-
OpenWrt Video: Packages specifically focused on display servers and clients (Xorg and Wayland).
Support Information
For a list of supported devices see the OpenWrt Hardware Database
Documentation
Support Community
- Forum: For usage, projects, discussions and hardware advise.
- Support Chat: Channel
#openwrton oftc.net.
Developer Community
- Bug Reports: Report bugs in OpenWrt
- Dev Mailing List: Send patches
- Dev Chat: Channel
#openwrt-develon oftc.net.
License
OpenWrt is licensed under GPL-2.0
