[okl4-developer] regarding interrupts

[Gabi Voiculescu]

Hello again.

Thanks for the advice on the entering kdb. Your advices helped me to rule out a set of causes for the freeze and pointed me to debug the kernel timer driver.

After I resolved the timer problems I have been able to enter kdb from the console.

Test_libs=all runs with 99% success. The only miss is at 

libs/iguana/test/memsect_tests.c:235:F:Memory Sections:MEMS0600: Unable to create and direct section.

Max_memsections is 0.

Is this an error? Any thoughts on what can cause this error? I should say I have mapped 128MB of RAM.

Beside this I have a couple more questions for you. I would appreciate even partial answers to these.

1 - in platform/..../plat.cc in OKL4 1.5.2 I have defined a vector called arm_bootdesc which I see defines non RAM areas for the particular platform. What is it's purpose? 
    1a - If I use the reserved type can I impose restrictions on a memory area - say flash? 
    1b - Do I define RAM sections in there?
    1c - Is there a particular order in which the entries have to be declared? For example in every example platform except for one the areas are defined in incremental order.


2 - Is there a way to get rid of the v1 driver information in platform/..../tools/machines.py, and still have the build create a good image?
Currently, on okl4-1.5.2, if I comment out the lines

timer_driver = "arm1176_timer"
serial_driver = "drv_l4_kdb"
drivers = [timer_driver, serial_driver]

I get two warning messages in the beginning of the build, and more importantly, I can no longer enter in okl4 (program halts somewhere in init_tracebuffer() ). My only concern would be if there is a conflict between the v1 and v2 drivers (currently I specify different drivers for the kdb serial) that the test_libs don't pick up.

Thanks for your support so far,
Gabi Voiculescu

       
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