Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Steven Seeger
Peter, Please tell us more about your hardware platform. I know this is not possible on convention x86 boards with a PC compatible BIOS. Thanks, Steven On Mar 27, 2009, at 10:38 AM, Peter Wächtler wrote: Hi Xenomai developers, for automotive control units the boot time is essential. After

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Gilles Chanteperdrix
Peter Wächtler wrote: Hi Xenomai developers, for automotive control units the boot time is essential. After power-up the first status message has to be sent in about 50ms. This is usually achieved by a RTOS with boot times far below. Is it possible to construct a system with Xenomai

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Peter Wächtler
Am Friday 27 March 2009 15:41:46 schrieb Steven Seeger: Peter, Please tell us more about your hardware platform. I know this is not possible on convention x86 boards with a PC compatible BIOS. Well the hardware should not matter and the startup code should be finished in several milli

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Steven Seeger
Well the hardware should not matter and the startup code should be finished in several milli seconds, of course. Most probably are ARM. PPC or SH4 platforms used in automotive devices. In the automation industry the boot time is not that important - therefore a lot of PC compatible

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Peter Wächtler
Am Friday 27 March 2009 15:53:02 schrieb Gilles Chanteperdrix: Xenomai kernel-space support is started somewhere in the middle of the boot process, so, you can probably start kernel-space applications at that time. User-space only works when init has been started, which happens a bit later

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Gilles Chanteperdrix
Peter Wächtler wrote: As a side note, I have a question for the automotive industry people. Would there be an interest in developing an OSEK skin for Xenomai? I have been thinking about that for some time, but still have not found time to start the job. I have read the OSEK spec, and found the

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Gilles Chanteperdrix
Peter Wächtler wrote: Am Friday 27 March 2009 15:53:02 schrieb Gilles Chanteperdrix: Xenomai kernel-space support is started somewhere in the middle of the boot process, so, you can probably start kernel-space applications at that time. User-space only works when init has been started, which

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Philippe Gerum
On Fri, 2009-03-27 at 16:41 +0100, Peter Wächtler wrote: Am Friday 27 March 2009 15:53:02 schrieb Gilles Chanteperdrix: Xenomai kernel-space support is started somewhere in the middle of the boot process, so, you can probably start kernel-space applications at that time. User-space only

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Peter Wächtler
Am Friday 27 March 2009 16:46:12 schrieb Gilles Chanteperdrix: Peter Wächtler wrote: As a side note, I have a question for the automotive industry people. Would there be an interest in developing an OSEK skin for Xenomai? I have been thinking about that for some time, but still have not

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Gilles Chanteperdrix
Peter Wächtler wrote: Am Friday 27 March 2009 16:46:12 schrieb Gilles Chanteperdrix: Peter Wächtler wrote: As a side note, I have a question for the automotive industry people. Would there be an interest in developing an OSEK skin for Xenomai? I have been thinking about that for some time,

Re: [Xenomai-core] use case: possible to boot Posix subsystem in 50ms and then Linux?

2009-03-27 Thread Philippe Gerum
On Fri, 2009-03-27 at 17:17 +0100, Peter Wächtler wrote: Am Friday 27 March 2009 16:46:12 schrieb Gilles Chanteperdrix: Peter Wächtler wrote: As a side note, I have a question for the automotive industry people. Would there be an interest in developing an OSEK skin for Xenomai? I have