Re: [OpenBIOS] Booting SunOS from OpenBIOS

[Artyom Tarasenko]

On Sat, Apr 6, 2013 at 11:07 AM, Blue Swirl  wrote:
> On Sat, Apr 6, 2013 at 1:50 AM, Artyom Tarasenko  wrote:
> > On Fri, Apr 5, 2013 at 10:08 PM, Tarl Neustaedter  wrote:
> > > On 2013-Apr-5 15:40 , Artyom Tarasenko wrote:
> > > > [...]
> > > >
> > > > OFMEM: ofmem_map_page_range ffc7d000 -> 006f7d000 00001000 mode 000000bc
> > > > OFMEM: ofmem_claim phys=ffffffffffffffff size=00014000 align=00020000
> > > > OFMEM: ofmem_claim_virt virt=00000000 size=00014000 align=00020000
> > > > OFMEM: ofmem_map_page_range ffc60000 -> 006f60000 00014000 mode 000000bc
> > > >
> > > > ^^^^ this one
> > >
> > > Wherever that's coming from, that looks like an allocator doing descending
> > > addresses.
> > > > OFMEM: ofmem_map_page_range ffc5c000 -> 006f78000 00001000 mode 000000bc
> > > > OFMEM: ofmem_claim phys=ffffffffffffffff size=00002000 align=00002000
> > > > OFMEM: ofmem_claim_virt virt=ffc5d000 size=00002000 align=00000000
> > > > OFMEM: ofmem_map_page_range ffc5d000 -> 006f5e000 00002000 mode 000000bc
> > > > ...OFMEM: ofmem_claim phys=ffffffffffffffff size=00002000 align=00002000
> > > > OFMEM: ofmem_claim_virt virt=ffc5f000 size=00002000 align=00000000
> > > > OFMEM: Non-free virtual memory claimed!
> > > >
> > > > ^^^^ overlaps with this one.
> > >
> > > This allocator, whatever it is has been doing ascending addresses. This
> > > actually looks like you simply ran out of room.
> >
> > Ops. Good catch!
> > Mark, can we just allocate more RAM, or do we have serious problem?
> > > You might change that patch rather than rounding up to the next 2^n, don't
> > > bother aligning to anything more than 0x2000.
> >
> > You mean
> >     } else if ( align > 0x2000) {
> >         align = 0x2000;
> >     } else {
>
> This would probably break allocation for IOMMU table, it needs to be
> aligned (physically) to table size (like 32MB).

Hmm. The successful log in the previous mail was produced with this code...
Will remove it and test again.

linux/sparc and solaris/sparc under qemu blog:
http://tyom.blogspot.com/search/label/qemu