From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Wed, 16 Aug 2006 21:55:15 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-help] problem with installation
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Nicola Pezzotti wrote:
> Alle 21:18, mercoled=C3=AC 16 agosto 2006, Jan Kiszka ha scritto:
>> Nicola Pezzotti wrote:
>>> Hi all.
>>>     I'm trying to install Xenomai on my pc.
>>> To do that I'm following this guide
>>> http://www.captain.at/xenomai-2.1-installation.php
>>> I'm using Kubuntu 6.6, linux-2.6.17 kernel and xenomai-2.2.0
>>> I have runned the script prepare-kernel.sh with the correct option as=
 in
>>> README.INSTALL
>>> Everything go well untill I reboot the system, then I have those erro=
rs
>>>
>>>
>>> Uncompressing Linux... ok, booting the kernel
>>> MP-BIOS bug 8254 timer not connected to IO-APIC
>>> Xenomai: incompatible timer mode(aperiodic found, need aperiodic)
>>                                                          ^^^^^^^^^
>> I guess this this is a typo, isn't it? I would expect "periodic" here.=

>=20
> Sorry=20
> Xenomai: incompatible timer mode(aperiodic found, need periodic)
>=20
>=20
>>> Xenomai: VxWorks skin init failed code -16
>>> Kernel Panic - not syncing: VFS Unable to mount root fs on unknow
>>> -block(0,0)
>> The VxWorks skin requires periodic timer mode. If you don't plan to us=
e
>> it, drop it from the kernel config . If you do want it, either set
>> CONFIG_XENO_OPT_TIMING_PERIOD to some reasonable value (see also the
>> related kernel-config help), or turn the nucleus into a module and pas=
s
>> the period via the module parameter "tick_arg" when insmod'ing
>> xeno_nucleus later.
>>
>=20
> I need VxWorks skin... can you give me an hint abount this configuratio=
n? in=20
> what part of installation I must this flag?

When you configure your kernel, watch out for Xenomai->Timing->"Use
periodic timer hardware" and "Time period". However, I guess this will
not solve the other issue.

Jan


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