I see. Thanks for the info.

So by default, the root task has complete control over physical address
containing gpt data.
And if I want to use the gpt inside a different task, the root task has to
pass its capability to that task.
Without that, any non-root task wouldnt be able to access it.

Am I understanding the timer's capability access control correctly?

Oak

On Tue, Jun 28, 2016 at 8:39 PM, Norrathep Rattanavipanon <[email protected]>
wrote:

> Thanks Anna.
>
> We are looking for a way to get timestamp (wall clock) that can be used in
> the userland for authenticating an incoming message from remote server.
>
> I see that the real-time clock driver is not implemented yet but an
> accurate timer would do the job too.
>
> So any recommendation on which timer implementation to use?
> Would this one work?
> https://github.com/seL4/libsel4platsupport/blob/master/src/mach/imx/timer.c
>
> Thanks,
> Oak
>
>
> On Tue, Jun 28, 2016 at 5:17 PM, Norrathep Rattanavipanon <
> [email protected]> wrote:
>
>> Hi,
>>
>> I was wondering if there's any real time clock implementation for I.MX6
>> in sel4.
>>
>> And if there isnt any, what would be the best way to use a timer in sel4
>> (since I saw many implementations of those)?
>> through sel4platsupport_get_default_timer?
>>
>> Best,
>> Oak
>>
>> --
>> Norrathep (Oak) Rattanavipanon
>> M.S. in Computer Science
>> University of California - Irvine
>>
>
>
>
> --
> Norrathep (Oak) Rattanavipanon
> M.S. in Computer Science
> University of California - Irvine
>



-- 
Norrathep (Oak) Rattanavipanon
M.S. in Computer Science
University of California - Irvine
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