Re: Powerpc grub_func_test never exits

[Glenn Washburn]

On Fri, 14 Jan 2022 23:05:01 +0100
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote:

> Hi Glenn!
> 
> On 1/14/22 22:59, Glenn Washburn wrote:
> > On Fri, 14 Jan 2022 09:48:56 +0100
> >
> > Hi Adrian, thanks for testing this for me.
> 
> You're welcome!
>  
> >> On 1/14/22 09:45, John Paul Adrian Glaubitz wrote:
> >>> I have burnt the ISO to a CD-R now and booted my iBook G4 with it.
> >>>
> >>> It boots but gets stuck at "Welcome to GRUB!". I can hear CD-ROM access 
> >>> noises
> >>> from time to time but no changes on the screen so far. I'll let it running
> >>> for some time.
> >>
> >> OK, so the machine just shut itself off. There was no other output besides 
> >> the
> >> message "Welcome to GRUB!", but I assume that is as expected and the tests 
> >> run
> >> silently, then shut the machine off.
> >>
> >> So, it seems to work on real hardware.
> > 
> > I forgot the output gets sent to the serial port, so that's why you
> > don't see anything. That's good that it works (ie shuts itself down).
> > That leads me to believe there's a bug in PowerPC Open Firmware.
> 
> Ah, serial output indeed explains why I didn't see anything. The problem is 
> that
> this is an iBook G4 which doesn't have a serial output I could use, so output
> to the framebuffer would be better.

Agreed, the ISO was created by the make check tests which output to
serial so it can see if the output was expected. I wouldn't want to
modify the ISO for your test (at least for the initial test) to make
sure that your results wouldn't be tainted by some change caused by
mucking with the ISO.

Glenn