Vincenzo SuraciandHauke Mehrtens bacda03b76 ramips: add support for Comfast CF-EW84
Add support for the Comfast CF-EW84 based on the MediaTek MT7621
SoC.

Hardware:
  CPU/SoC:      MediaTek MT7621DA
  RAM:          128 MB DDR3
  Flash:        Macronix MX25L12805D 16 MB
  Switch:       MediaTek MT7530
  WiFi 2.4 GHz: MediaTek MT7603E
  WiFi 5 GHz:   MediaTek MT7613B
  Ports:        1x WAN, 2x LAN (10/100/1000 Mbps)
  LEDs:         Power, WAN, LAN1, LAN2, WLAN
  Buttons:      Reset
  UART:         through-hole on PCB
                pinout: RX, TX, GND, 3.3V
                settings: 115200n8

Flash instructions:
1. Connect the bundled PoE injector to power.
2. Connect the PC to the LAN1 or LAN2 port of the device.
3. Configure a static IP on the computer's Ethernet adapter:
     IP:      192.168.1.x (x = 2 to 254)
     Mask:    255.255.255.0
     Gateway: empty
     DNS:     empty
4. Connect a second Ethernet cable to the PoE port of the
   bundled injector.
5. Press and hold the reset button on the device.
6. While holding the reset button, plug the other end of the
   second Ethernet cable into the WAN port.
7. Wait at least 3 seconds, then release the reset button.
8. Browse to http://192.168.1.1: the MediaTek U-Boot System
   Recovery page should appear.
9. Click Upload and select the *-sysupgrade.bin firmware file.
10. After flashing completes, browse to http://192.168.1.1
    again: the LuCI login page should appear.

Factory data:
  2.4 GHz EEPROM:        factory offset 0x0000
  5 GHz EEPROM:          factory offset 0x8000
  LAN MAC address:       factory offset 0xe000
  WAN MAC address:       factory offset 0xe000 (+1)

LED layout:
The Comfast CF-EW84 has five physical LEDs, but only the WLAN
LED is software-controllable through the Linux GPIO-LEDs
subsystem.

Signed-off-by: Vincenzo Suraci <vincenzo.suraci@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/24112
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2026-07-19 13:09:05 +02:00
2026-07-17 21:43:03 +02:00

OpenWrt logo

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 python3.8+ rsync subversion unzip which

Quickstart

  1. Run ./scripts/feeds update -a to obtain all the latest package definitions defined in feeds.conf / feeds.conf.default

  2. Run ./scripts/feeds install -a to install symlinks for all obtained packages into package/feeds/

  3. Run make menuconfig to select your preferred configuration for the toolchain, target system & firmware packages.

  4. Run make to 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.

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 #openwrt on oftc.net.

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License

OpenWrt is licensed under GPL-2.0

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