Hi, There has been a significant traffic on the list about ongoing port(s) to the Broadcom 2709 processor family, so it seems the right time to contribute some related code that has been brewing here for a couple of weeks, targeting the BCM2708 family.
At git://git.xenomai.org/ipipe.git, branch vendors/raspberry/ipipe-4.1, you will find a preliminary port of the interrupt pipeline to the Raspberry Pi Zero, based on the RPi reference tree at https://github.com/raspberrypi/linux (rpi-4.1.y). This is work in progress, but this kernel already runs most of the basic Xenomai 3 test programs on real RPi Zero hardware properly. However, the pipeline does not play well with CONFIG_NO_HZ_IDLE on this kernel yet, and the autotuner may fail calibrating the core timer although manual calibration will get you correct latency figures; these issues will soon be addressed. At this chance, I took a stab at porting the pipeline to the BCM2709 processor family as well, but the result has not been tested so far. Like it happened with several significant Xenomai features in the past, this effort was funded by Siemens AG. Corporate Competence Center Embedded Linux. To give credit where credit is due, Jan Kiszka has been helping in making Xenomai an industrial-grade option for real-time applications for more than ten years now, so thanks to him, Gernot Hillier and their teammates at Siemens. Over the same period, other companies have greatly helped our project by contributing code and/or funding significant developments as well, and like Siemens, keep on doing this on a regular basis, among whom the Denx people led by Wolfgang Denk. All Xenomai users and developers owe all of them quite a lot in this respect. Ok, that was my season's greetings, wrapped in software. The leopard cannot change its spots, I guess. -- Philippe. _______________________________________________ Xenomai mailing list Xenomai@xenomai.org http://xenomai.org/mailman/listinfo/xenomai
