Re: [Qemu-devel] hw/arm: add Lego NXT board

[Alexander Graf <graf@campus.tu-berlin.de>]

On 07/14/2014 10:37 PM, Paolo Bonzini wrote:> The obvious thing to 
consider is whether this could be used to
 > circumvent the GPL.
 >
 > I think a generic memory-mapped I/O device interface is not a good idea
 > in this respect, also because it's hard to get it right.
Okay, if this is a concern I will have to keep my changes off the 
mainline as it is a required feature.

 > But i2c is
 > simple enough, and there are so many devices with a 4-page datasheet,
 > that I think it would be acceptable.  You could also write an i2c
 > passthrough chardev backend that connects to /dev/i2c* and lets the
 > guest access slaves in the host.

My interest is to fake sensor values for the guest and not to connect 
anything to real hardware. I think I misinterpreted your "chardev". To 
clarify: My guest is a bare metal ARM image, no linux and I don't want 
to interact with the host's hardware. So no chardev in the linux sense 
is involved.

Anyway thank you for your feedback.

Regards
Alexander