2932b4d05e
The malta subtargets for mips64 and mips64el fail to start the init process
at boot, resulting in a boot loop. The issue was raised and analyzed within
FS#3277. Investigation suggested code near the [vdso] memory area of the
process was long jumping into a region inaccessible to the process, e.g.
init: - preinit -
init: Launched preinit instance, pid=522
do_page_fault(): sending SIGSEGV to init for invalid read access from 0000000000000360
epc = 0000000000000360 in init[aaab42b000+4000]
ra = 000000fffee385e0 in
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Rebooting in 1 seconds..
Note the low-memory read access and epc are the same. Upstream kernel 5.6
included a relevant patch and discussion:
* d3f703c4359f ("mips: vdso: fix 'jalr t9' crash in vdso code")
Disassembly of the failing kernel's vdso.so confirmed presence of the
telltale long jumps, e.g.:
00000000000007c0 <__vdso_clock_getres@@LINUX_2.6>:
[...]
7dc: 0320f809 jalr t9
[...]
Restore booting mips64/mips64el malta by backporting the above commit:
* 310-v5.6-mips-vdso-fix-jalr-t9-crash-in-vdso-code.patch
Fixes:
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| .github | ||
| config | ||
| include | ||
| package | ||
| scripts | ||
| target | ||
| toolchain | ||
| tools | ||
| .gitattributes | ||
| .gitignore | ||
| BSDmakefile | ||
| Config.in | ||
| feeds.conf.default | ||
| LICENSE | ||
| logo.svg | ||
| 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!
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.
gcc binutils bzip2 flex python3 perl make find grep diff unzip gawk getopt
subversion libz-dev libc-dev
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.
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 freenode.net.
Developer Community
- Bug Reports: Report bugs in OpenWrt
- Dev Mailing List: Send patches
- Dev Chat: Channel
#openwrt-develon freenode.net.
License
OpenWrt is licensed under GPL-2.0