tz_vmm on imx6

[chirag garg]

Thanks Stefan,

So what could be the right approach to prevent the UART driver from getting
corrupted ?

Now, I want to switch the control from Normal world OS (Genode) back to the
Secure world OS (Genode) by triggering(running a particular script in
Normal world). So what could be the right approach to achieve this
objective ?

Regards

Chirag Garg
IIT Madras , Rise Lab

On Fri, Jan 2, 2015 at 5:14 PM, Stefan Kalkowski <
stefan.kalkowski at ...1...> wrote:

> Hi,
>
> On 12/24/2014 10:49 AM, chirag garg wrote:
> > Hi all,
> >
> > I was trying to run tz_vmm script over the imx6 platform. In which i
> > have put Genode OS image (printf script) as a guest OS in the Normal
> > world to test the switching between the Secure world to the Normal
> > world. And the following is the output I am getting..
> >
> >
> > Starting kernel ...
> >
> > kernel initialized
> > Genode 14.11
> > int main(): --- create local services ---
> > Inside platform services 0
> > Inside platform services 1
> > Inside platform services 2
> > Inside platform services 3
> > int main(): --- start init ---
> > int main(): transferred 250 MB to init
> > int main(): --- init created, waiting for exit condition ---
> > [init] Could not open file "ld.lib.so <http://ld.lib.so>"
> > [init] parent provides
> > [init]   service "ROM"
> > [init]   service "RAM"
> > [init]   service "IRQ"
> > [init]   service "IO_MEM"
> > [init]   service "CAP"
> > [init]   service "PD"
> > [init]   service "RM"
> > [init]   service "CPU"
> > [init]   service "LOG"
> > [init]   service "SIGNAL"
> > [init]   service "VM"
> > [init] child "tz_vmm"
> > [init]   RAM quota:  3932160
> > [init]   ELF binary: tz_vmm
> > [init]   priority:   0
> > [init -> tz_vmm] Start virtual machine ...
> > kernel initialized
> > Genode 14.08
> > int main(): --- create local services ---
> > int main(): --- start init ---
> > int main(): transferred 509 MB to init
> > int main(): --- init created, waiting for exit condition ---
> > [init] Could not open file "ld.lib.so <http://ld.lib.so>"
> > [init -> test-printf] -1 = -1 = -1
> > [init] virtual void Genode::Child_policy::exit(int): child exited with
> > exit value 0
> > [init -> tz_vmm]
> >
> > The last message on the window is [init -> tz_vmm] and nothing happens
> > after that.
> >
> > Could you please let me know if this is the correct output?
>
> Well, in general it looks good the whole guest scenario seems to
> succeed. I don't know why the last uncompleted message is printed, but
> it may be that at last some VM exception is caught by the VMM, but the
> UART driver gets corrupted, because you use the UART device from both
> world concurrently.
> However, in general the world switch seems to work as expected.
>
> Regards
> Stefan
>
> >
> > Regards
> >
> > Chirag Garg
> > IIT Madras , Rise Lab
> >
> >
> >
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>
> --
> Stefan Kalkowski
> Genode Labs
>
> http://www.genode-labs.com/ · http://genode.org/
>
>
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> your
> hub for all things parallel software development, from weekly thought
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