Thread (18 messages) 18 messages, 6 authors, 2022-05-27

Re: [PATCH 2/2] drm/tiny: Add ofdrm for Open Firmware framebuffers

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2022-05-21 02:53:57
Also in: dri-devel, linuxppc-dev

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

Cheers,
Ben.
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
  
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