Re: [Xen-devel] Stuck trying to boot Xen 4.3 on Arm Midway

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-12-02 at 16:43 +0100, Stefan Bader wrote:
> On 02.12.2013 16:24, Ian Campbell wrote:
> > On Mon, 2013-12-02 at 15:59 +0100, Stefan Bader wrote:
> >> I am trying to extract and combine the various pieces of information found 
> >> in
> >> [1] and its sub-pages and the Xen in-tree documentation in order to make 
> >> xen
> >> boot (potentially non-smp without some later changes). But since I am not
> >> familiar enough with Arm I think I am stuck doing something wrong.
> >>
> >> I compiled the hypervisor with debug and early printk for midway and use 
> >> the
> >> xen.bin file (I could get no output at all when trying to create a uboot 
> >> image
> >> with mkimage from the uncompressed xen.gz).
> > 
> > What version are you using? xen.bin went away in July, the right file is
> > now just "xen".
> 
> The released version of xen 4.3. At some point I might update to 4.3.1 (or
> whatever stable is current then). This probably implies picking some 
> additional
> patches when I want to get it running on Midway.

Xen 4.3 for ARM was a tech preview. I believe at the time it ran on
Model and versatile express. Getting it running on anything else is
going to be a big job I'm afraid. I'd suggest either waiting for 4.4 or
using current tip in the meantime.

>  The xen.bin would not be
> packaged right now but it had the right format to be used by bootz while 
> xen.gz
> (or xen after unpacking) would not be usable in uboot without converting and
> that need some more address values which I could and likely do get wrong.

In 4.3 xen.bin was the correct zImage compatible thing. I'm not sure
what you mean about the address values, but as I say if you are
expecting it to work on midway easily you are going to be disappointed.


> Thanks, I will look through that later. One thin I noted is the dtb setup.
> Examples out there often vary in having a modules sub-leaf or not. I would 
> think
> that from the early printk I am at least right to use the deeper nesting. At
> least consistent with the in-source doc at that time/ release.

I can't remember what 4.3 did, but at least these days the depth is not
that important, it's the compatabile string and presence beneath /chosen
which matter.

Ian.



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