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@...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.
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.
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
--
>
>
>>
>>> 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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