Re: [Embeddedxen-devel] Information on Embedded Xen for ARM

[ROSSIER D. <Dan...@he...>]

> -----Original Message-----
> From: Venkatraman V [mailto:ven...@gm...]
> Sent: jeudi, 25. juin 2009 13:41
> To: ROSSIER Daniel
> Subject: Re: Information on Embedded Xen for ARM
> 
> Hello Daniel,
> 
> I had downloaded the sources from sourceforge. Could you please help me
> in knowing the order in which i should go about the build process?
> 
> I saw a .config file in the un-tarred directory, so I just did a
> 
> make ARCH=arm CROSS_COMPILE=/scratchbox/compilers/arm-linux-2007q1-
> 21/bin/arm-none-linux-gnueabi-
> 
> It built completely and zImage was created under xen
> (xen/arch/arm/boot/zImage).
> 
> Once this was done, I assumed, this to be the kernel image to be given
> to qemu, which i did, using the following command:
> 
> sudo qemu-system-arm -M spitz -kernel ./xen/arch/arm/boot/zImage -
> mtdblock ../kgdb/pxa_nand_rootfs_ecc -hda ../linux-
> 2.6.27.8_console/scsi.img -serial stdio
> 
> where
> 1) pxa_nand_rootd_ecc is a nand flash i had created (with just the
> busybox), since you have to give a mtd device for PXA (spitz) in qemu)
> 
> 2) the scsi.img is a filesystem image (ext2) which could be excluded
> too.
> 
> However, this is the error (in italics) I receive:
> 
> Error: unrecognized/unsupported machine ID (r1 = 0x000002c9).
> 
> Available machine support:
> 
> ID (hex)    NAME
> 00000196    Intel HCDDBBVA0 Development Platform (aka Mainstone) /
> EmbeddedXEN (xen-pxa270-qemu)
> 
> Please check your kernel config and/or bootloader.
> 
> 

Yes, this is normal since the image is compiled for a Mainstone/PXA270 platform. If you want to use the image with a Spitz board, you simply need to adapt the machine-specific files accordingly. But I would recommend to use Mainstone as the emulated PXA270 platform.

> Please let me know as to where I am going wrong?
> 
> Regards
> 
> VenkatRaman
> 
> 


Daniel
ps: you can also retrieve the last version grom git, but be careful because the .config is currently for a Colibri/PXA270 board (just need to change the CONFIG_MACH_xxx in .config)
> 
> 
> 
> On Tue, Jun 23, 2009 at 11:50 AM, ROSSIER Daniel <Daniel.Rossier@heig-
> vd.ch> wrote:
> Hi Venkatraman,
> 
> > -----Original Message-----
> > From: Venkatraman V [mailto:ven...@gm...]
> > Sent: mardi, 23. juin 2009 07:18
> > To: ROSSIER Daniel
> > Subject: Information on Embedded Xen for ARM
> >
> > Hello Daniel,
> >
> > I saw your project on source forge, regarding the Embedded Xen for
> ARM.
> > Way to go!
> >
> > I would like to have some information regarding the project (which I
> > couldnt find).
> >
> > - Is it like an embedded hypervisor for ARM ?
> >
> > or
> >
> > - Is it a Hypervisor, bundled with the Linux 2.6.18 and the miniOS
> > kernel, to show the possibility of multi-kernel functionality on
> > embedded systems?
> >
> Well, both statemetns are corrects; the hypervisor is embedded within a
> single image including Linux 2.6.18 and miniOS. In the coming days,
> we will also provide the Xenomai subtree which contains all APIs for
> hard realtime applications (see http://www.xenomai.org).
> 
> Indeed, we want to dig into multi-kernel (and virtualization)
> approaches for embedded systems, especially for hard realtime and also
> for applications and OS migrating from one environment to another.
> 
> > Would download the binary and try it on qemu and would give my
> > feedback.
> >
> Thanks. Please don't hesitate to ask questions if any, or simply keep
> us informed about your feedback and ideas.
> 
> > Regards
> >
> > VenkatRaman
> >
> > PS: I am new to virtualization and linux environment, please bear
> with
> > me, in case I ask irrelevant questions...
> No worry.
> 
> Daniel