Raspberry Pi Prospects and/or Alternative
norman.feske at ...1...
Wed Jan 28 11:32:07 CET 2015
> By the way, Norman, what would be a good project for me to get started
> on while I'm waiting for the people who understand the AHCI and part_blk
[off-topic] Please let me raise your awareness about mailing-list
etiquette. Short top postings are generally not considered as polite.
Keep in mind that each email you send to the list arrives at the inboxes
of all subscribers. Hence, please be considerate not to abuse the
mailing list as an instant messaging tool.
Regarding your question, I have following recommendations:
* If you are interested in using Genode on the Raspberry Pi, go this
way. It is fun. Use it as a chance to learn about device drivers.
Even if Jeroen has developed a GPIO driver already, I would still
recommend you to start poking around with GPIO pins - just for the
sake of learning.
Download and study the reference manuals for the SoC and board of the
Try to understand how GPIO programming works. There are excellent
resources available to get started. For example:
The examples start with simple things like a blinking LED. Apply the
gained knowledge to write a Genode program that accesses the GPIO
registers using an IO_MEM session. Look at the existing drivers to
see how it is done.
* For the work that you initially wanted to pursue, the lack of a
proper file system and block driver is not a show stopper. You
mentioned your interest to port libraries and applications.
You can do that just fine without a persistent file system. Just
look at the large body of software that we already ported (e.g.,
Qt5 with the Arora web browser, the entire tool chain, the GNU
tools, etc.). For porting, we normally place files in a TAR
archive mounted into the VFS of the ported application.
Additionally, there is a RAM file system available if the
application needs to write files.
If you are genuinely interested in contributing to Genode, the best way
would be to document and publish your steps, e.g., in the form of a blog
or a Wiki. This would possibly enable future newcomers to get started
Dr.-Ing. Norman Feske
http://www.genode-labs.com · http://genode.org
Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden
Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth
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