l4-hackers Digest, Vol 124, Issue 4

Lluís Vilanova vilanova at ac.upc.edu
Tue Aug 6 22:33:25 CEST 2013


Adam Lackorzynski writes:

> On Tue Aug 06, 2013 at 12:55:41 +0300, Lluís Vilanova wrote:
>> Adam Lackorzynski writes:
>> 
>> > On Mon Aug 05, 2013 at 14:08:40 +0300, Lluís Vilanova wrote:
>> >> Adam Lackorzynski writes:
>> >> 
>> >> > On Mon Aug 05, 2013 at 01:22:17 +0300, Lluís Vilanova wrote:
>> >> >> Hey, thanks for the response and the offer to keep me posted on the problem :)
>> >> >> 
>> >> >> Last time I tried with QEMU the system was working perfectly fine (with "make
>> >> >> qemu"). Unfortunately, I need to run it on a real machine to get some
>> >> >> performance measurements.
>> >> 
>> >> > Use grub1 is a quick tip, possibly via netboot (pxegrub). A short look
>> >> > at current grub2 shows me some interesting and likely changed behaviour
>> >> > but I didn't check further right now.
>> >> 
>> >> > https://os.inf.tu-dresden.de/~adam/grub/0.97/
>> >> 
>> >> Oh! I forgot to add that everything but the serial console works. I suppose I'll
>> >> have to manually copy any timing numbers I print from my experiments.
>> >> 
>> >> Just in case, here's my grub1 entry:
>> >> 
>> >> title L4 (original)
>> >> root (hd1,0)
>> >> kernel /l4-orig/bootstrap -serial
>> >> module /l4-orig/fiasco -serial_esc -comspeed 115200 -comport 0
>> >> module /l4-orig/l4f/sigma0
>> >> module /l4-orig/l4f/moe --init=rom/hello
>> >> module /l4-orig/l4f/l4re
>> >> module /l4-orig/l4f/hello
>> 
>> > That looks ok and should just work. Does it work under Qemu? Is it a
>> > plain normal serial? Is it working in Grub?
>> 
>> It works flawlessly under QEMU. The Grub menu also shows up on the serial
>> console of the real machine, but once bootstrap is started, only the screen
>> works.

> That all looks good to me, and that it works in Qemu also indicates that
> it's ok. Could you maybe try another machine to see if it works there?

I don't have another machine to easily test it, sorry. For now I'll keep working
with the monitor, since the machine has a remote console attached to it.

Thanks a lot for all your help.

Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth




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