Re: [Qemu-devel] [6271] Use ESCC for PowerMac serial

[Aurelien Jarno]

Blue Swirl a écrit :
> On 1/13/09, Aurelien Jarno <address@hidden> wrote:
>> On Mon, Jan 12, 2009 at 10:59:11PM +0200, Blue Swirl wrote:
>>  > On 1/12/09, Aurelien Jarno <address@hidden> wrote:
>>  > > On Mon, Jan 12, 2009 at 09:40:49PM +0100, Aurelien Jarno wrote:
>>  > >  > On Mon, Jan 12, 2009 at 10:32:43PM +0200, Blue Swirl wrote:
>>  > >  > > On 1/12/09, Aurelien Jarno <address@hidden> wrote:
>>  > >  > > > On Mon, Jan 12, 2009 at 05:40:24PM +0000, Blue Swirl wrote:
>>  > >  > >
>>  > >
>>  > > > > Strange, at least Debian 3.1 R8 (CD and direct -kernel), Debian 4.0 
>> R5
>>  > >  > > (CD and direct -kernel), Debian 4.0 R6 and Gentoo 2008.0 act like
>>  > >  > > before.
>>  > >  >
>>  > >  > I have the same problem with a CDROM, an hard disk, -kernel.
>>  > >  >
>>  > >  > > What kind of setup do you have? At least OpenBIOS config is not
>>  > >  > > standard, you have enabled PCI debugging.
>>  > >  >
>>  > >  > I have built OpenBIOS by hand, native build. This is the unmodified 
>> SVN.
>>  > >  >
>>  > >
>>  > >
>>  > > The PCI debugging is enabled by default on the native build, and disable
>>  > >  on the cross-build. Disabling the PCI code fixes (or workarounds?) the
>>  > >  problem.
>>  >
>>  > It looks like the address of the boot serial is bad, if I change it to
>>  > 0x7f013000, PCI debug output works. Maybe something maps over the
>>  > address at some point.
>>
>>
>> 0x80013000 is in the middle of the PCI space, so you are hitting another
>>  device, probably the VGA card. 0x7f013000 is unused but we have to limit
>>  the memory to 2032MiB
> 
> How about some higher address then, like 0xef013000?
> 

The PCI space uses 80000000-fdffffff. The ISA IO space uses
fe000000-fe0200000. OpenBios uses 0xfff00000-0xffffffff. This leaves
very few possibilities.

Alternatively we can map the whole MacIO device at a fixed location
which also makes the location of the serial ports fixed. The G3 beige
uses f3000000-f307ffff for the MacIO device.

-- 
  .''`.  Aurelien Jarno             | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
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