[coreboot] Broadwell IGD (on Auron_Paine)

Georg Wicherski gw at oxff.net
Fri Oct 23 14:44:18 CEST 2015

On 10/19/2015 09:15 PM, Stefan Reinauer wrote:
> it seems that the refcode binary was not running. Can you verify that
> it was part of the image and gets executed?

Of course, good find.

The reference code blob was actually in the CBFS but unfortunately the
code to run it was disabled if no such blob was directly provided to

<http://review.coreboot.org/#/c/11907/4> now actually works on my
Auron_Paine and correctly boots with framebuffer into a payload.

There is one remaining issue, when using GRUB2 as payload and using the
at_keyboard terminal_input, the machine resets. The last debug print I
can see from GRUB2 is from term/at_keyboard.c:367 with current_set=0, so
I suppose the crasher is the write_mode(1) a few lines down.

Is this a GRUB2 issue or Coreboot issue (the at_keyboard is related to
the EC, maybe not properly initialized)?

Thanks for all involved so far!

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