FreeBSD Wandboard r270855

Having built FreeBSD numerous times, I thought it would be interesting to know how to build NetBSD.  The instructions from the NetBSD documentation are here. Firstly get the sources.  An easy way is to simply FTP them.  I got the NetBSD 6.1.2  sources from here.  These files are all tarballs, so they’ll need to be…

If you happen to have had an Apple][, you might be interested in retrieving your data from old DOS 3.3 floppies.  Or maybe you’re just interested in retrocomputing and downloaded some floppies at Apple2Online.  In my case, I had an ulterior motive.  I’ve been learning about FreeBSD device drivers and was wondering how difficult it…

The FDT file for Raspberry Pi, declares UART.  I’ve had quite a bit of trouble understanding how declaring a uart in the FDT results in /dev/tty0 and /dev/cuau0 appearing in /dev/ Here are the relevant lines from the FDT: uart0: uart0 { compatible = “broadcom,bcm2835-uart”, “broadcom,bcm2708-uart”, “arm,pl011”, “arm,primecell”; reg = <0x201000 0x1000>; interrupts = <65>;…

I’ve been building FreeBSD-CURRENT images for my Pi, and I’ve noticed I have this: ugen0.5: <vendor 0x7392> at usbus0 So, it turns out I have one of these plugged in, and it seems likely that the unknown USB device is ugen0.5.  So firstly, there is the question of “ugen”.  You can read about it here….

This build is for FreeBSD-11, Alpha 2. Binary image, and bootlog.  

I’ve been making FreeBSD-Current builds for my Raspberry Pi.  Naturally I wanted to try out the GPIO support to find out just how simple it is to use.   Here’s an example, and the full code is here. int main (int argc, char *argv[]) { char *device = “/dev/gpioc0”; int gpiofd = open(device, O_RDWR); if…