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Spelunking the FreeBSD ARM FDT
The FDT is the “Flattened Device Tree”, a simple device tree used in embedded FreeBSD, for example on a Pi. Every architecture has a DTS file, which contains a human-readable list of hardware for that architecture. For example, the Pi FTD is here. You should notice that there are declarations for: cpu axi (the…
FreeBSD-10.1 Soekris r276913
There is a new build of FreeBSD 10.1 for Soekris here. The source tree revision is r276913.
Cross-compiling NetBSD on FreeBSD-10
I was curious to see how difficult it would be to compile NetBSD on FreeBSD 10. Once you have the source, there is a build.sh script which is very helpful. The build is as simple as: ./build.sh -m i386 tools ./build.sh -m i386 kernel=GENERIC release In my case I have both clang and gcc installed. I…
Bare Metal coding on FreeBSD
I recently got interested in the technical details of how ARM OS’s work, so I decided to try my hand at writing a simple one. This blog post is not about the OS itself, but about setting up the development environment. In my case, I’m developing in a terminal session, on FreeBSD 10 on an…
Spelunking the Crochet-FreeBSD Wandboard boot
Some time ago I was part of the effort to add Wandboard support to Crochet-FreeBSD. I wrote a blog posting about it here. An explanation of how Crochet-FreeBSD boots the Wandboard is below: The Wandboard uses U-Boot as its initial boot-loader. A number of patches to the U-Boot source are required, and you…
Building my own wireless point
I got interested in building my own wireless point after seeing some of the wireless firmware issues like this. Besides, I’ve always been interested in embedded devices and FreeBSD. So, the first step was a device. I chose to use a Wandboard. I’m a committer to Crochet-FreeBSD, so I built out the device support for…