9ea5487ea5
The qcom spm driver is currently broken for IPQ8064 OnHub devices on
kernel 6.1, such that it hangs the system when booting, much to the
consternation of users. This is especially bad as these devices don't
yet have a fully-supported release branch, and are still sometimes
landing on snapshot builds.
OnHub devices have their own kernel config, so it's not that wide of an
impact to disable this.
I haven't fully gotten to the bottom of this, but:
(a) The vendor kernel didn't have any SPM driver at all, and didn't
utilize cpuidle.
(b) The device tree has never included any (non-disabled) cpuidle
states, so even when this driver was present on 5.15 (last
known-working kernel), it didn't actually do anything -- it bailed
early, before ever doing any SPM initialization.
(c) Refactoring in Linux 5.16 [1] caused the SPM driver to be activated
unconditionally, including setting us into standby mode
(PM_SLEEP_MODE_STBY) by default.
Removing the one PM_SLEEP_MODE_STBY line from drivers/soc/qcom/spm.c
seems to fix the problem, but that isn't much different than simply
disabling the driver, so I go with that for now.
I also disable CONFIG_ARM_QCOM_SPM_CPUIDLE, becuase it 'select's
QCOM_SPM.
NB: it's possible there's some other deeper root cause involved in here.
For one, I notice that CPU hotplug (e.g., echo 0 >
/sys/devices/system/cpu/cpu1/online, echo 1 > ...) doesn't work right
either. Perhaps there's some mismatch on upstream Linux qcom-scm
behavior and the old boot firmware used for these systems? It wouldn't
be the first time, as we've had some similar incompatibilities on the
next generation of these devices, Google WiFi [2].
[1] Commit 60f3692b5f0b ("cpuidle: qcom_spm: Detach state machine from
main SPM handling")
[2] [RFC] qcom_scm: IPQ4019 firmware does not support atomic API?
https://lore.kernel.org/linux-arm-kernel/20200913201608.GA3162100@bDebian/
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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| tools | ||
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| BSDmakefile | ||
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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