Re: [Qemu-devel] [PATCH v3 1/6] hw/misc/dyn_sysbus_binding: helpers for sysbus device dynamic binding

[Paolo Bonzini]

Il 10/09/2014 12:26, Alexander Graf ha scritto:
> > It's not even clear to me that E500 CCSR devices should be sysbus, in
> > fact...
>
> The problem if you continue that thought process is that we'd end up
> with 500 different buses and 500 different uart boilerplate devices just
> to fit into the respective buses ;).

True.  The alternative is to hardcode the knowledge of the spec in the
management layers (since you cannot do index=0|1, you have to do
something akin to iobase=0x3f8 for the x86 COM1 port).  I guess you will
still need two sysbuses so that you get the correct hierarchy in the
device tree, right?

And we're back to the beginning of the discussion: the distinction
between a "sysbus" and a "platform bus" disappears, and in fact it even
feels more accurate to just call these things "sysbuses"...

Paolo