I've slightly modified the guide to be for this router and other routers that have a 4MB flash.
For convenience, wifi is enabled by default on first boot. If you do not want this, remove ./target/linux/ramips/base-files/etc/uci-defaults/99_wireless_config
Special thanks to sanitariu & milankragujevic for the source files and guides!
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| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
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This is the buildsystem for the OpenWrt Linux distribution.
To build your own firmware you need a Linux, BSD or MacOSX system (case
sensitive filesystem required). Cygwin is unsupported because of the lack
of a case sensitive file system.
You need gcc, binutils, bzip2, flex, python, perl, make, find, grep, diff,
unzip, gawk, getopt, subversion, libz-dev and libc headers installed.
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.
3.1. With the config menu open, select these:
Target System: MediaTek Ralink MIPS
Subtarget: MT76x8 based boards
Target Profile: TP-Link TL-WR840N v6.2
3.2. (Optional) Change to fit new features:
+ Change/enable (built-in) - Disable
Target Images > squashfs:
+ Block size: 512 (1024 if bin is still big, slower boot time)
Global build settings:
- Cryptographically signed package lists
- Enable signature checking in opkg
+ Remove ipkg/opkg status data files in final images
- Enable IPv6 support in packages
+ Strip unnecessary exports from the kernel image
+ Strip unnecessary functions from libraries
Kernel build options:
- Compile the kernel with debug filesystem
(disable mac80211 DebugFS first)
- Compile the kernel with symbol table info
- Compile the kernel with debug info
+ Number of squashfs fragments cached: 1
+ Compiler optimization level: Optimize for size
Base system:
- opkg
- openwrt-keyring
- libpthread
Network:
- ppp
Web Servers/Proxies:
+ uhttpd
Kernel modules:
Wireless Drivers > kmod-mac80211:
- Export mac80211 internals in DebugFS
Network support:
- kmod-ppp
LuCI:
Modules:
+ luci-base
+ Minify Lua sources
+ luci-mod-admin-full
+ luci-mod-network
+ luci-mod-status
+ luci-mod-system
Themes:
+ luci-theme-bootstrap
You may also make all kernel modules built-in, saves a bit of image size
and RAM. Be wary that some stuff might break when doing this, so keep a copy
of the kernel .config before doing so.
Kernel config is located at:
./build_dir/target-mipsel_24kc_musl/linux-ramips_mt76x8/linux-4.14.221
Read more at https://openwrt.org/docs/guide-user/additional-software/saving_space
4. Run "make" to build your firmware. This will download all sources, build
the cross-compile toolchain and then cross-compile the Linux kernel & all
chosen applications for your target system.
.bin files are located at ./bin/targets/ramips/mt76x8
If your sysupgrade bin goes over 3.5MB, there will not be enough
space for jffs2 to save. It'll boot, but settings won't persist
between reboots.
Sunshine!
Your OpenWrt Community
http://www.openwrt.org
IcedShake
https://github.com/IcedShake