tz_vmm run script

Mon Mar 7 12:15:46 CET 2016

Hi John,

On 03/05/2016 02:57 AM, John David wrote:
> Hi Stefan,
> 
> 
> Thank you for your reply.
> 
> On Fri, Mar 4, 2016 at 11:35 AM, Stefan Kalkowski <
> stefan.kalkowski at ...1...> wrote:
> 
>> Hi John,
>>
>> On 03/03/2016 02:38 AM, John David wrote:
>>> Hi,
>>>
>>> On Thu, Feb 25, 2016 at 11:35 AM, Martin Stein <
>> martin.stein at ...1...
>>>> wrote:
>>>
>>>> Hi John,
>>>>
>>>> Am 25.02.2016 um 00:58 schrieb John David:
>>>>> I changed the kernel commandline parameters  to
>>>>> /"video=mxcdi0fb:RGB666,XGA earlyprintk di0_primary ldb=di0/" and also
>>>>> enable early_printk (CONFIG_EARLY_PRINTK=y ), but it still displays the
>>>>
>>>> Have you set CONFIG_DEBUG_LL and CONFIG_TTY_PRINTK in your Linux config?
>>>> AFAIK this is also needed for earlyprintk. When I want my Linux to be
>>>> really verbose, I furthermore add "loglevel=10" to the command line.
>>>>
>>>
>>> Could you please see the attached kernel log messages and check for
>>> possible errors? because I am still getting only the Linux penguin on the
>>> LVDS display. there are some errors such as,
>>> *da9052_ssc_i2c 0-0048: 2 - da9052_i2c_read:master_xfer Failed!*
>>
>> Ok, obviously you redirect the bootconsole to serial line again. But did
>> you see any boot messages when not redirecting and setting the kernel
>> options that Martin mentioned?
>> More importantly, what about my hint to inspect the initramfs you are
>> using, whether the init process will spawn a tty on-screen at all? It's
>> hard to follow you when not getting feedback regarding earlier questions.
>>
> 
> I have tried different options, but no luck so far.
> 
>>
>> Alternatively, you can provide a git branch containing the Linux version
>> including your currently used configuration, and a Genode branch with
>> your state including the run-script you are using (including the
>> initramfs, you're using), so one can reproduce your results.
>>
> 
>  Please find my patches in the following branches (Genode, Linux and
> initramfs)
> 
> https://github.com/jonhedave/Genode/tree/genode
> https://github.com/jonhedave/linux/tree/linux
> https://github.com/jonhedave/initramfs/tree/initramfs
> 

As I've assumed Linux already succeeded with its boot process. The
console messages and prompt was not shown, because the Linux Kernel
configuration was missing "framebuffer console" support. Probably that
is not needed for Android, but it is for the busybox initramfs setup. To
simplify these kind of Linux problems debugging, I've integrated the
para-virtual serial line driver we use for the USB armory. Have a look
at my forks of your branches:

https://github.com/skalk/genode/tree/johndave
https://github.com/skalk/linux/tree/johndave

Regards
Stefan

> 
>>
>> Regarding the I2C error in your kernel boot messages, I think something
>> importantly for the I2C controller to work properly is missing in your
>> kernel configuration (in our branch we gave control of it to Genode, so
>> it was normal that the kernel could not succeed with it).
>>
> 
> 
> 
>> Regards
>> Stefan
>>
> 
> 
> Thanks,
> 
>>
>>>
>>>
>>>>
>>>>> Do you have any other experiment for ARM TrustZone on imx53 QSB?
>>>>
>>>> AFAIK, no. We have a Trustzone demo for the USB Armory currently for
>>>> which you can find the Linux [1] and Genode sources [2] online. There
>>>> are several topic branches in my Linux repo that correspond to the USB
>>>> Armory port and document the problems that we solved in a more detailed
>>>> way as the final branch. Furthermore, there is a github issue [3] were I
>>>> documented parts of the development too.
>>>>
>>>
>>> I have managed to run the trustzone demo on USB Armory. Currently i am
>>> using the serial port to boot the demo. I want the Linux (non secure
>> world)
>>> to be displayed on a separate device while the Genode uses the serial
>> port.
>>> Is it possible to connect the USB Armory to external device such as
>>> keyboard and display? I have an external USB NIC card connected to the
>> USB
>>> Armory using the host adapter and tried to check the network connection
>> in
>>> the normal world (Linux) after i run the Trustzone demo, but the network
>>> card is not detected. How to connect to the internet using USB Armory?
>>>
>>>
>>> Thank you in advance for your answers.
>>>
>>>
>>>
>>>> Cheers,
>>>> Martin
>>>>
>>>>
>>>> [1] https://github.com/m-stein/linux/tree/genode_hw_usb_armory_tz_vmm
>>>> [2]
>>>>
>> https://github.com/genodelabs/genode/blob/master/repos/os/run/tz_vmm.run
>>>> [3] https://github.com/genodelabs/genode/issues/1497
>>>>
>>>>
>>>>
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>>>
>>>
>>>
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>>
>> --
>> Stefan Kalkowski
>> Genode Labs
>>
>> http://www.genode-labs.com/ · http://genode.org/
>>
>>
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-- 
Stefan Kalkowski
Genode Labs

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