Booting base-hw image on a Freescale i.MX6

[Martin Stein]

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 <http://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 <http://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 <http://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 <http://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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