Re: ARM bare metal application test

[Julien Grall <julien.grall@arm.com>]

On 09/05/2016 09:34, Ivan Pavić2 wrote:
> Hello,

Hello Ivan,

> I'm trying to build simple bare metal application on ARM Cortex A7.
> I reached the phase in which I successfully created domain. Now,
> I would like to check if application is really running (it runs according
> xl list). But i need some simple interaction or at least console output.
>
> So far this is my code:
>
>      .section ".start", "x"
>      .align
>      .globl    _start
>
> _start:
>      @ zImage header
> .rept   8
>      mov     r0, r0
> .endr
>      b       work
>      .word   0x016f2818      @ Magic numbers to help the loader
>      .word   _start          @ absolute load/run zImage address
>      .word   _end - _start   @ zImage size
>      @ end of zImage header
>
> work:  b work
>
> I've made linker script so that entry point is at address _start and
> it is initial value of PC (it is 0x80008000). So is there any quick
> way to check registers from dom0 so I can be sure that "work" is
> being done? I'm testing this on Odroid XU3 platform...

You can dump the registers of a vCPU with xenctx.

$PREFIX/lib/xen/bin/xenctx domid

$PREFIX is the path where xen tools have been installed (i.e --prefix on 
the configure). The default path is /usr/local/

Regards,

-- 
Julien Grall

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel