Suggestions for arm build for qemu?

[Brian J. McGovern]

On Mon, 2011-07-11 at 18:15 -0500, Mark Tinguely wrote:
> On 7/11/2011 2:25 PM, Brian J. McGovern wrote:
> > [trimmed]
> >> The 194609 change is also in FreeBSD 8.2 elf_trampoline.c. When it was
> >> in the kernel, qemu would just sit there in some loop.
> >>
> >> With option ARM_CACHE_LOCK_ENABLE compiled into the kernel, qemu will
> >> give an illegal instruction error.
> >>
> >> --Mark Tinguely
> >>
> > I saw that, but when you commented about hand-editing additional changes
> > in to the file, I figured there was "more" that I hadn't picked up yet.
> > As to ARM_CACHE_LOCK_ENABLE, I commented it
> > in /usr/src/sys/arm/xscale/std.xscale, and that seems to removing it
> > from the kernel.
> >
> > At this point, I'm still running in to a:
> >
> > "qemu: fatal: Trying to execute code outside of RAM or ROM at
> > 0x300080e0" after having used an example at
> > http://wiki.openmoko.org/wiki/FreeBSD  for mkimage with QEMU 0.14.1
> > (qemu-devel).
> >
> > I remember there being a patch to allow for compressed kernels, so I
> > need to dig that out when I get back to trying this again.
> >
> 
> How far does the boot process get before this happens?
> 
> A quick look at the device map, and that seems to be the 
> PXA2X0_PCMCIA_SLOT1 which is not mapped.
> 
> You could remove the mkimage and let it try to NFS mount - this is just 
> a test to see if it will boot further.
> 
> Also with the GUMSTIX and qemu, certain network commands (ntpdate comes 
> to mind) caused page fault in the smc driver. I never investigated.
> 
> --Mark Tinguely
> 

Its pretty much dying right away. The entire session is at the end. A
few details to make sure you're up to speed on how I got here...

The kernel was built with (note I'm not putting an MFS in it yet - want
to get something booting first. Oh, and outside of the
ARM_CACHE_LOCK_ENABLE change, is running a "stock" 8.2 codebase):

cd /usr/src && make TARGET=arm TARGET_ARCH=arm KERNCONF=GUMSTIX
DESTDIR=/usr/tmp/armbuild buildkernel installkernel

And then post-processed with
mkimage -A arm -O freebsd -T kernel -C none -a 30008000 -e 300080e0 -n
"FreeBSD"
-d /usr/tmp/armbuild/boot/kernel/kernel /usr/tmp/kernel.armboot

Then running: qemu-system-arm -m 512 -kernel /usr/tmp/kernel.armboot

If there are any questions as to why I'm doing something a particular
way, the answer is "Because the documentation I can find says so". QEMU
is 0.14.1 from ports/emulators/qemu-devel. 

ESC[mUsing AAlib driver: Curses driver 1.0 (curses)
ESC[HESC[Jqemu: fatal: Trying to execute code outside RAM or ROM at
0x300080e0

R00=00000000 R01=00000000 R02=00000000 R03=00000000
R04=00000000 R05=00000000 R06=00000000 R07=00000000
R08=00000000 R09=00000000 R10=00000000 R11=00000000
R12=00000000 R13=00000000 R14=00000000 R15=300080e0
PSR=400001d3 -Z-- A svc32