f024f4b1b0
Kernel 5.15 introduced a significant change to spi-nor subsystem [1],
which would the SPI-NOR core to no longer unprotect the Flash chips if
their protection bits are non-volatile, which is the case for MX25L6405D
and MX25L12805D, used in Ubiquiti XW and WA lines of devices [2].
However, their bootloader forcibly enables this protection before
continuing to boot, making the kernel not unprotect the flash upon boot,
causing JFFS2 to be unable write to the filesystem. Because sysupgrade
seems to unlock the flash explicitly, the upgrade will work, but the
system will be unable to save configrationm showing the following symptom
in the kernel log:
[ 86.168016] jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
[ 86.192344] jffs2_build_filesystem(): unlocking the mtd device...
[ 86.192443] done.
[ 86.200669] jffs2_build_filesystem(): erasing all blocks after the end marker...
[ 86.220646] jffs2: Newly-erased block contained word 0x19852003 at offset 0x001e0000
[ 86.292388] jffs2: Newly-erased block contained word 0x19852003 at offset 0x001d0000
[ 86.324867] jffs2: Newly-erased block contained word 0x19852003 at offset 0x001c0000
[ 86.355316] jffs2: Newly-erased block contained word 0x19852003 at offset 0x001b0000
[ 86.402855] jffs2: Newly-erased block contained word 0x19852003 at offset 0x001a0000
Disable the write protection unconditionally for ath79/generic subtarget,
so the XW and WA devices can function again. However, this is only a
stopgap solution - it probably should be investigated if there is a way
to selectively unlock the area used by rootfs_data - but given the lock
granularity, this seems unlikely.
With this patch in place, rootfs_data partition on my Nanostation Loco
M5 XW is writable again.
Fixes: #12882
Fixes: #13750
Fixes:
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|---|---|---|
| .devcontainer/ci-env | ||
| .github | ||
| config | ||
| include | ||
| LICENSES | ||
| package | ||
| scripts | ||
| target | ||
| toolchain | ||
| tools | ||
| .gitattributes | ||
| .gitignore | ||
| BSDmakefile | ||
| Config.in | ||
| COPYING | ||
| feeds.conf.default | ||
| Makefile | ||
| README.md | ||
| rules.mk | ||
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 MacOSX 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