Hi John,

sorry for my late response, I was in holidays.

On 02/13/2016 12:54 AM, John David wrote:
> Hi Stefan,
>
> Thanks a lot.
>
> I have tried to configure and run the tz_vmm example according to your
> explanation, but only the Linux penguin is displayed on left corner of the
> LVDS display kit and then it hangs.

Ok, that means Linux succeeds in using the LVDS display. When you write:
"it hangs" do you get any message from the Genode side, e.g. a VM
exception dump?

Otherwise you need to inspect the Linux kernel messages,
did you enabled earlyprintk, and removed the serial console redirection
of the kernel messages within the kernel commandline parameters?

regards stefan

> As you mentioned, I removed the last
> four patches from this branch (
> https://github.com/skalk/linux/commits/imx53-tz) and re-compiled the Linux
> kernel. I also changed the kernel cmdline argument value in
> genode/os/src/server/tz_vmm/imx53/main.cc file to  *console=ttymxc0,115200
> gpu_nommu video=mxcdi0fb:RGB666,XGA di0_primary ldb=di0*. I wonder if you

> could tell me what is missing?
>
> Thanks!
>
>
>
> On Wed, Feb 10, 2016 at 2:52 PM, Stefan Kalkowski <
> stefan.kalkowski@...1...> wrote:
>
>> Hi John,
>>
>> On 02/03/2016 10:51 PM, John David wrote:
>>> Hi all,
>>>
>>> I am running  tz_vmm run script on i.mx53qsb. I have LVDS display kit
>>> attached to the board. I want the Linux (non secure world) to be
>> displayed
>>> on the LVDS while the Genode uses the serial console. I wonder if you
>> could
>>> tell me how can i do this.
>>>
>>
>> You have to adjust the partitioning of the devices btween secure world
>> (Genode) and non-secure world (Linux). This is primarily done via the
>> CSU (Central Security Unit) of this Freescale SoC. You can find the
>> relevant configuration hardcoded within:
>>
>>   repos/base-hw/src/core/include/spec/imx53/trustzone/csu.h
>>
>> just reset mostly all devices except the UART to belong to the
>> non-secure world, and set the DMA channel of the GPU (line 222) to be
>> unsecure. Remove the relevant patches of the Linux guest OS from this
>> branch (I think the last 4 commits):
>>
>>   https://github.com/skalk/linux/commits/imx53-tz
>>
>> and then re-build the Linux kernel and Genode scenario.
>>
>> Regards
>> Stefan
>>
>>> Thanks!
>>>
>>>
>>>
>>>
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>>
>> --
>> Stefan Kalkowski
>> Genode Labs
>>
>> http://www.genode-labs.com/ · http://genode.org/
>>
>>
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>
>
>
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--
Stefan Kalkowski
Genode Labs

http://www.genode-labs.com/ · http://genode.org/

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