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available. Modern iwlwifi(4) chipsets are supported. There was some fallout
after the release and a few open problems, but also a lot of positive feedback.
rtw88(4) saw a fix for a NULL pointer in the driver and is now starting to be
usable. Thanks to everyone who helped track this down and test patches along
the way.
Work on suspend and resume for LinuxKPI-based wireless drivers was picked up
again, and we are getting closer to a working solution (at least for suspend it
now exists).
Work is also ongoing for Mediatek mt76-based PCIe card support.
HE (802.11ax) definitions were migrated from linuxkpi(4) to native net80211
code and corrected. ifconfig(8) was enhanced parsing more information elements
to aid debugging. Work is in progress to fix a problem with reporting signal
strength and dealing with RSSI.
Further fixes to LinuxKPI and resolving the problems we worked around by
improving native net80211 code are in the works.
Lastly, various man pages were improved or written.
Sponsor: The FreeBSD Foundation
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USB Kernel Debugging
Contact: Tom Jones
XHCI USB controllers offer a mode which allows them to be used as a system
debugging interface. XHCI debug uses a special USB 3 cable with VBUS, D+ and D-
disconnected. The feature can be used to live debug the FreeBSD kernel,
enabling investigation of issues which cause the system video console to lock
up and there is not an alternative such as a serial console. This can happen
when debugging issues with graphics drivers.
Hiroki Sato developed support for the XHCI debug interface and made it
available as some in progress git branches. This implementation enables FreeBSD
to operate as both a Debug Host and a Debug Target, with support for debugging
from the loader through to the kernel.
I have been updating and testing this support along with Mitchell Horne and
together we have a WIP branch which applies to FreeBSD main. We are currently
tidying up interfaces and testing for stability with the goal of introducing
XHCI debug once 16 is branched.
In doing the XHCI debug work I rediscovered a second form of kernel debugging
implemented by Hans Petter Selasky (hselasky@) in 2009. The FreeBSD USB stack
supports using a USB serial device as a system console and includes support to
continue polling the interface once the system has entered the debugger (such
as during a panic). USB Serial debugging allows a developer with two commodity
USB serial interfaces to connect to a FreeBSD target and debug the kernel. USB
Serial debugging is available in all FreeBSD releases in FreeBSD 9, but changes
in the kernel build process mean that it is not detected in modern kernels.
In this quarter I have been working on documentation required to use this
interface and changes to make it available in GENERIC kernels for newer FreeBSD
releases.
A core part of this work has been trying to document kernel debugging
interfaces. If you use live debug interfaces other than serial or network
debugging please get in touch so I can add these to the FreeBSD Developers
Handbook.
Sponsor: The FreeBSD Foundation
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Porting HFS+ to FreeBSD
Links:
Project Home URL: https://github.com/stupendoussuperpowers/freebsd_hfs
Contact: Sanchit Sahay
HFS+ (Hierarchical File System) is a legacy filesystem introduced by Apple for
its BSD-based XNU operating systems. Although HFS+ has been deprecated in favor
of APFS, it is still in use on many older Apple devices, such as iPods, which
rely on HFS+ volumes for storage.
While many modern operating systems include native support for HFS+, FreeBSD
currently offers only limited functionality via FUSE. This project aims to
address that limitation by porting the original, now open-sourced HFS+
implementation to the FreeBSD kernel as a native filesystem driver.
The primary focus of this effort is to modernize the VFS layer to align with
current FreeBSD interfaces and to adapt XNU-specific logic to their FreeBSD
equivalents.
Features implemented:
• Mount support for HFS, HFS+ Volumes
• Read, stat support for directories and files
• Create support for directories and files
• mount_hfs binary
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Architectures
Updating platform-specific features and bringing in support for new hardware
platforms.
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Pinephone Pro Support
Links:
Repository on Codeberg URL: https://codeberg.org/Honeyguide/free
sd-pinephonepro
Contact: Toby Kurien
The project to port FreeBSD over to the Pinephone Pro is progressing. The aim
of this project is to step by step support components of the Pinephone Pro in
FreeBSD so that the device one day might be usable as a highly mobile FreeBSD
device.
In this quarter, a new development release has been made available for flashing
and testing on a PinePhone Pro. It includes a newly added touch driver, and a
minimal desktop environment with an on-screen keyboard. You can simply flash
this build to an SD card and boot it up, provided you have the correct version
of U-boot bootloader installed (details at the repository). The image also
contains the kernel and drivers source code, along with editors/vim editor and
build tools, allowing for development of drivers on-device.
To facilitate testing and driver development, network access has been enabled
via the headphone jack (using the headphone-to-USB-serial adapter). It works by
using Point-to-Point Protocol (PPP) to access the network via your PC. Details
of setting this up are in the repository README file.
Work is now under way to develop USB and WiFi drivers. As always, contributions
in the form of testing, feedback, upstreaming, driver development, or just
words of encouragement are welcome.
See the post on the FreeBSD Forum for more:
https://forums.freebsd.org/threads/porting-freebsd-to-pinephone-
ro-help-needed.95948/
Sponsor: Honeyguide Group
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Cloud
Updating cloud-specific features and bringing in support for new cloud
platforms.
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FreeBSD on EC2
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