[OpenBIOS] [PATCH] pci: fix BAR setup

[Tarl Neustaedter]

On 2012-May-10 17:48 , Jakub Jermar wrote:
> [...]
>
> So it looks like either the child base should be 0, or reg_addr must be
> 0x00900000, or parent_base must be 0x1ff00100000. From the way this
> works e.g. on Sun E6500, the last option seems to be the correct one.

Agreed. On current SPARC, the only non-zero Range on PCI is for 64-bit 
memory. For the memory ranges we see:

0200.0000 0000.0000 0000.0000 8000.8090 0000.0000 0000.0007 0000.0000
0300.0000 0000.0001 0000.0000 8000.8091 0000.0000 0000.0007 0000.0000

My recollection is that memory space PCI RA (real address rather than 
physical address, because now we're behind a hypervisor) ranges from 
8000.8090.0000.0000 through 8000.8097.FFFF.FFFF - which would match your 
guess that the parent_base needs to be hacked if 0800.0000 is going to 
be the BAR and is going to represent 1ff.0800.0000.

So, why does OpenBios have 0100.0000 as a child base in the first place?