Hi Aditya

On 29.01.2014 06:36, Aditya Kousik wrote:

Hello all, 

Genode base-hw kernel runs successfully on i.MX6. Stefan: we were looking at the wrong UART port (1 instead of 2) which led us on a wild goose chase. And we set the GPIO pins directly by setting IOMUX to GPIO mode: we lit a LED bulb successfully. The driver, as you mentioned is quite complex. 

We're getting the following message for test-printf ::

Starting kernel ...

int main(): --- create local services ---

int main(): --- start init ---

int main(): transferred 1020 MB to init

int main(): --- init created, waiting for exit condition ---

[init] Could not open file "ld.lib.so"

[init -> test-printf] -1 = -1 = -1

[init] virtual void Genode::Child_policy::exit(int): child exited with exit value 0

We ran nested_init to verify again and got the following::

int main(): --- create local services ---

int main(): --- start init ---

int main(): transferred 1021 MB to init

int main(): --- init created, waiting for exit condition ---

[init] Could not open file "ld.lib.so"

[init] parent provides

[init]   service "ROM"

[init]   service "RAM"

[init]   service "CAP"

[init]   service "PD"

[init]   service "RM"

[init]   service "CPU"

[init]   service "LOG"

[init]   service "SIGNAL"

[init] child "init"

[init]   RAM quota:  10223616

[init]   ELF binary: init

[init]   priority:   0

[init -> init] Could not open file "ld.lib.so"

[init -> init] parent provides

[init -> init]   service "ROM"

[init -> init]   service "RAM"

[init -> init]   service "CAP"

[init -> init]   service "PD"

[init -> init]   service "RM"

[init -> init]   service "CPU"

[init -> init]   service "LOG"

[init -> init]   service "SIGNAL"

[init -> init] child "init"

[init -> init]   RAM quota:  4980736

[init -> init]   ELF binary: init

[init -> init]   priority:   0

[init -> init -> init] Could not open file "ld.lib.so"

[init -> init -> init] parent provides

[init -> init -> init]   service "ROM"

[init -> init -> init]   service "RAM"

[init -> init -> init]   service "CAP"

[init -> init -> init]   service "PD"

[init -> init -> init]   service "RM"

[init -> init -> init]   service "CPU"

[init -> init -> init]   service "LOG"

[init -> init -> init]   service "SIGNAL"

[init -> init -> init] No children to start

One, Are these satisfactory messages? (Are the test scripts running as they should) Two, Why does test-printf not work when I try to print Genode::printf("Hello World!"); and consequently set run_genode_until "Hello World!" 10 (or {Hello World!} 10). [init -> test-printf] does not get initialized.

Regards

Aditya.

The output of your run/printf and run/nested_init looks fine. I assume you're getting no output with Genode::printf("Hello World!"); because Genode buffers print jobs until a line-break comes in, to save RPCs. Could please try Genode::printf("Hello World!\n"); ?

Best regards,
Martin

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