Re: [Qemu-devel] [FYI] Soft feature freeze for 1.0 is 10/15 (three weeks away)

[Avi Kivity]

On 09/27/2011 11:33 AM, Avi Kivity wrote:
> On 09/26/2011 09:07 PM, Blue Swirl wrote:
> > >>  The default address is used for early serial printk in OpenBIOS, 
> > so it
> > >>  should still work.
> > >
> > >  Ok, so drop the extra mapping, but init the dynamic mapping to 
> > 0x80013000.
> >
> > That should work.
>
> It's already there (macio.c):
>
>     if (macio_state->escc_mem) {
>         memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem);
>     }
>
> I'll drop the extra mapping.

Well, it's not that easy.  As the other mapping is part of an ordinary 
BAR, you need to setup the device (at least PCI_COMMAND and 
PCI_BASE_ADDRESS_0) so it responds to memory requests, and also enable 
the bridge.

We could hack it by having a low-priority mapping at 0x80013000, but it 
seems wrong.  Maybe the firmware should configure that BAR first?  What 
happens on real hardware?

--
error compiling committee.c: too many arguments to function