2013/3/25 Jakub Jermar <[email protected]>: > Nice achievement so far. As of now, I guess we have several machines in > this state (no serial user input/output): bbxm, bbone, malta and now > Raspberry Pi. So solving the serial user input output is a generic issue > and all the above machines will benefit from it, including those that > normally use a graphics framebuffer and keyboard.
In the case of the Raspberry it should be quite easy to introduce some support for the framebuffer and use it as output device; the serial could be used only for the input. If I remember well, this is the same solution adopted on GTA02. In any case, I think that having a generic mechanism for serial I/O could be very convenient. >> The UART driver was copied from ARM926 with minor changes and I think >> that we should evaluate if it's possible to merge the two. > > Is this the same device? Or at least a compatible one? I am very much in > favor of unifying the drivers when it makes sense. On the other hand, > should it be a completely different device, we better keep the drivers > separate. Yes, it's a Primecell PL011 UART in both cases. I created a copy because I needed to do some different initializations, in particular changing the clock divisor and disabling hw flow control. But apart from that, the code is the same. So it should be simple to make it generic so that it will be easily reusable by other boards in the future. Beniamino _______________________________________________ HelenOS-devel mailing list [email protected] http://lists.modry.cz/cgi-bin/listinfo/helenos-devel
