SPARC64 device tree model - SBUS or PCI?
by Mark Cave-Ayland
Hi all,
I've been spending some time recently trying to figure out why the
SPARC64 serial console doesn't appear to work outside of OpenBIOS under
QEMU, and so was looking at the example device trees in the Debian
sparc-utils package.
Now AFAICT the examples/ultra2 file represents an Ultra 2 SBUS which is
different from QEMU which I believe is attempting to emulate an Ultra 2
PCI (Sabre) system. I know there was some talk previously on the mailing
list about which device model to use moving forward, but I don't
remember a definite decision being made. If QEMU is going to continue to
use a PCI-based system, does anyone have a copy of the prtconf output
for such a system?
ATB,
Mark.
8 years
- 5
- 9
building openfirmware
by Programmingkid
I was wondering if openfirmware could be made easier to build. I suggest that it use the configure-make strategy that most unix programs use. The configure command should be at the top level of the openfirmware folder and would allow the user to set the architecture and other options from there. This change would make things a lot easier for developers since they wouldn't have to hunt for the make file.
8 years, 1 month
- 1
- 0
Re: [OpenBIOS] SPARC64 device tree model - SBUS or PCI?
by Artyom Tarasenko
On 2/26/12, Blue Swirl <blauwirbel(a)gmail.com> wrote:
> On Sun, Feb 26, 2012 at 12:13, Mark Cave-Ayland
> <mark.cave-ayland(a)ilande.co.uk> wrote:
>> Hi all,
>>
>> I've been spending some time recently trying to figure out why the SPARC64
>> serial console doesn't appear to work outside of OpenBIOS under QEMU, and
>> so
>> was looking at the example device trees in the Debian sparc-utils package.
>
> Maybe on the real machine, serial console isn't using the 'su' devices
> (PC serial) but 'se' device which does not exist in QEMU?
Yes, at least Ultra-5 uses "se" ports for ttya and ttyb.
Linux, Solaris and NetBSD are able to handle zs, se and su ports. But
since qemu-sparc64 doesn't have a compatible IRQ controller, the
serial ports under qemu can be used only in polling mode. Or perhaps
via promlib.
>> Now AFAICT the examples/ultra2 file represents an Ultra 2 SBUS which is
>> different from QEMU which I believe is attempting to emulate an Ultra 2
>> PCI
>> (Sabre) system. I know there was some talk previously on the mailing list
>> about which device model to use moving forward, but I don't remember a
>> definite decision being made. If QEMU is going to continue to use a
>> PCI-based system, does anyone have a copy of the prtconf output for such a
>> system?
>
> IIRC we discussed earlier about using Ultra 5 which doesn't have a SBus.
>
>> ATB,
>>
>> Mark.
--
Regards,
Artyom Tarasenko
solaris/sparc under qemu blog: http://tyom.blogspot.com/search/label/qemu
8 years, 1 month
- 1
- 0
Re: [OpenBIOS] OpenFirmware Documentation
by Jason Hooper
Hi,
Not trying to pretend I know much about this but you can try http://web.archive.org to find old pages or http://www.openfirmware.org.
Good luck!
Rob Ballantyne <robballantyne3(a)gmail.com> wrote:
>Hello,
>
> OpenFirmware docs seem to have disappeared from the web since I last
>looked at them.
>
> Apple had a few Tech Notes that were helpful -- those are no longer available.
>
> Sun, I think, had the actual standard document and supplements --
>playground.sun.com now doesn't seem to be around.
>
> Is there a new repository for these kinds of docs?
>
> Thanks,
>
>Rob
>
>--
>OpenBIOS http://openbios.org/
>Mailinglist: http://lists.openbios.org/mailman/listinfo
>Free your System - May the Forth be with you
8 years, 1 month
- 1
- 0
Re: [OpenBIOS] OpenFirmware Documentation
by Mike Erwin
Oh no! I have a few of those docs stored locally (mostly related to
graphics devices), and might be able to dig up some more. The wayback
machine at archive.org is one option for the Sun stuff. Loads of
information still at firmworks.com and openfirmware.org... what is
missing besides the Apple TNs?
Mike Erwin
musician, naturalist, pixel pusher, hacker extraordinaire
On Tue, Feb 14, 2012 at 2:45 PM, Rob Ballantyne
<robballantyne3(a)gmail.com> wrote:
> Hello,
>
> OpenFirmware docs seem to have disappeared from the web since I last
> looked at them.
>
> Apple had a few Tech Notes that were helpful -- those are no longer available.
>
> Sun, I think, had the actual standard document and supplements --
> playground.sun.com now doesn't seem to be around.
>
> Is there a new repository for these kinds of docs?
>
> Thanks,
>
> Rob
>
> --
> OpenBIOS http://openbios.org/
> Mailinglist: http://lists.openbios.org/mailman/listinfo
> Free your System - May the Forth be with you
8 years, 1 month
- 1
- 0
OpenFirmware Documentation
by Rob Ballantyne
Hello,
OpenFirmware docs seem to have disappeared from the web since I last
looked at them.
Apple had a few Tech Notes that were helpful -- those are no longer available.
Sun, I think, had the actual standard document and supplements --
playground.sun.com now doesn't seem to be around.
Is there a new repository for these kinds of docs?
Thanks,
Rob
8 years, 1 month
- 1
- 0