[OE-core] [oe-core] QEMU with ARM Cortex A9 with hard float configuration - Kernel panic

[rewitt at declaratino.com]

> -------- Original Message --------
> Subject: Re: [OE-core] [oe-core] QEMU with ARM Cortex A9 with hard float
> configuration - Kernel panic
> From: Elvis Dowson <elvis.dowson at gmail.com>
> Date: Thu, August 29, 2013 12:28 pm
> To: Bruce Ashfield <bruce.ashfield at windriver.com>
> Cc: OpenEmbedded Core Mailing List
> <openembedded-core at lists.openembedded.org>
> 
> 
> On Aug 29, 2013, at 8:23 PM, Bruce Ashfield <bruce.ashfield at windriver.com> wrote:
> 
> > On 13-08-29 10:02 AM, Elvis Dowson wrote:
> >> Hi Bruce,
> >> 
> >> On Aug 29, 2013, at 4:35 PM, Bruce Ashfield <bruce.ashfield at windriver.com> wrote:
> >> 
> >>> With that, it's always been a manual setup for me in the past. The typical
> >>> workflow is to test them via the usermode NFS boot. Have you given
> >>> that a go ?
> >> 
> >> Does yocto have some wrapper script/command to setup nfs boot automatically
> >> without too much manual configuration? The runqemu and runqemu-internal
> >> scripts seems to indicate that, but haven't tried this before.
> >> 
> >> Let me know if it exists! If not, if you could point me to a link that describes how
> >> to set NFS boot, and use it to load a beagleboard image it would be great!
> > 
> > This is supported right out of the box, and it should be documented in
> > the project docs.
> > 
> > Search for users-space NFS in http://www.yoctoproject.org/docs/current/adt-manual/adt-manual.html
> 
> I saw this, its only for the rootfs. what I've read on the net alluded to the fact that you need to have
> xload, uboot and the kernel image on a specific partition inside an sdcard image. Those were
> the boot procedures used for the beagleboard using qemu.
> 
> This is for -M beagle, with qemu-system-arm. 
> 
> Anyway, I just need a way to boot vexpress-a9 using QEMU. I'll send a private email, with the
> patch to you, so that you can start off from where I left, in terms of modifications to poky-master
> and be able to debug the issue directly at your end.

I actually set up a build to get a vexpress-a15 booting in qemu with
neon support. However, I didn't use the yocto kernel and just pointed at
my own defconfig and kernel version 3.10.7. If it would be helpful for
you, I could put my changes up on github.

The weirdest thing was if I just used the defconfig that is in the
kernel for vexpress it wouldn't boot, I had to tweak it a bit.

> Best regards,
> 
> Elvis Dowson
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