Hi

Am 21.05.22 um 04:49 schrieb Benjamin Herrenschmidt:

On Thu, 2022-05-19 at 09:27 +0200, Thomas Zimmermann wrote:

quoted

to build without PCI to see what happens.

If you bring any of the "heuristic" and palette support code in, you
need PCI. I don't see any reason to take it out.

quoted

Those old Macs use BootX, right? BootX is not supported ATM, as I don't
have the HW to test. Is there an emulator for it?

It isn't ? When did it break ? :-)

I meant that BootX is not (yet) supported by this new driver. The Linux 
kernel overall probably supports it.

quoted

If anyone what's to make patches for BootX, I'd be happy to add them.
The offb driver also supports a number of special cases for palette
handling. That might be necessary for ofdrm as well.

The palette handling is useful when using a real Open Firmware
implementation which tends to boot in 8-bit mode, so without palette
things will look ... bad.

It's not necessary when using 16/32 bpp framebuffers which is typically
... what BootX provides :-)

Maybe the odd color formats can be tested via qemu.

I don't mind adding DRM support for BootX displays, but getting the 
necessary test HW with a suitable Linux seems to be laborious. Would a 
G4 Powerbook work?

Best regard
Thomas

Cheers,
Ben.

quoted

Best regards
Thomas

quoted

Gr{oetje,eeting}s,

                          Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                  -- Linus Torvalds

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev