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IOLog on serial port? Or to use kprintf?
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IOLog on serial port? Or to use kprintf?


  • Subject: IOLog on serial port? Or to use kprintf?
  • From: Parav Pandit <email@hidden>
  • Date: Sat, 22 Jan 2005 00:00:32 +0000 (GMT)

Hi,
Currently I see my IOLog() messages in to the
/var/log/system.log file.

Can I redirect it to my serial port?
My Sytem is MAC OS X 10.3.7 on Power MAC G5.
If yes, Do I have to set do nvram
boot-args="debug=0x08" ?
(DB_KPRT)
I learned from Kernel Programming.pdf .
I tried it, but I still get IOLog() messages in the
same file.

I hope I don't have to recompile the kernel for this.

Or U can direct only kprintf() to serial port???

what should be serial port setting for MAC OS X G5?
is it 57600 8N1 or 38400 8N1 ?

G5 has that modem kind of RJ11 conector, not the
serial port that we see on PC, so do I need to connect
it
via RJ11 connector to other host ?

If I have to use kprintf() in my driver code, do I
need to recompile the
kernel, to see the messages on the console / serial
port?
 I think need to recompile in DEBUG mode, right?

I searched the xnu code, but I don't find any code of
the kprintf in any of the c files.
Where is the kprintf() definition???

Regards,
Parav Pandit


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