Errors in PSIM

Thu May 2 02:07:27 UTC 2013

Thanks Joel. So, no chance of customizing Psim for 32mb of RAM?

"On real how you can do that or arrange the linker script to have a special
reserved area." I'm not sure I understood this. On the 'production' code I
should find some other way for guaranteeing that space is free, is that it?

On Wed, May 1, 2013 at 11:01 PM, Joel Sherrill <Joel.Sherrill at oarcorp.com>wrote:

>  Sorry.. Forgot to follow up on board differences. Psim is not the same as any real hardware. Each bsp matches a specific hardware set. Psim is configured to have 16mb of ram and I think your partition base addresses are beyond that.
>
> Gedare is right.. On a simulator, malloc the memory for partitions for simplicity. On real how you can do that or arrange the linker script to have a special reserved area.
>
> --joel
>
> Gedare Bloom <gedare at rtems.org> wrote:
>
>
>  You tell the partitions where to start, so just give the second
> partition the right address. You have to be sure the memory you use is
> available both in the hw as real memory and also not used for other
> purposes. Probably you can malloc all the memory you need at startup time
> and pass pointers into the allocated buffer to partition create.
> -Gedare
> On May 1, 2013 7:07 PM, "Binkowski, Cassio" <cassioiks at gmail.com> wrote:
>
>> Hmmm. The 'Testing Task' does not have a while(1) loop and I'm not
>> deleting it. Could that be it? *<- Yup, that's it. Just tested. Can you
>> please explain how did you arrive at this conclusion?*
>>
>>  I'm referring to the MPC5200B board. You can see the manual in the
>> following link:
>> http://www.freescale.com/files/32bit/doc/ref_manual/MPC5200BUM.pdf
>>
>>  Now, mentioning the partitions and memory addresses. I'm not quite sure
>> if I'm incrementing addresses correctly. I do want to create a partition
>> right next where the other one finishes.
>> So, if starting address is 0x10000, the next partition will start at
>> 0x10000 + previousPartitionSize.
>> Does this make sense?
>>
>>  Thanks.
>>
>>
>>
>> On Wed, May 1, 2013 at 7:49 PM, Joel Sherrill <Joel.Sherrill at oarcorp.com>wrote:
>>
>>>  It could be another task exiting. You mentioned loading code.
>>>
>>> Psim is a specific simulated hardware environment and does not as configured match any board. If you got addresses from a piece of real hardware, the addresses will not match. What target board's manual are you reading?
>>>
>>> "Binkowski, Cassio" <cassioiks at gmail.com> wrote:
>>>
>>>
>>>   Ok.
>>>
>>>  1) The Init task is already deleting itself after loading the other
>>> tasks. Do I have to do something else?
>>>
>>>  2) The memory for partitions came from the board data sheet. I based
>>> myself on the addresses mentioned there and followed upon. I was creating
>>> the first one starting at 0x10000 and incrementing from that according to
>>> each partition's size.
>>>
>>>  Can you help me set these 2 things up? I'm not really sure how to deal
>>> with that memory issue and the internal error as well.
>>>
>>>
>>> On Wed, May 1, 2013 at 6:18 PM, Joel Sherrill <Joel.Sherrill at oarcorp.com
>>> > wrote:
>>>
>>>>  That address is invalid for psim. Where does the partition memory come from? Here I'd the memory keep for psim
>>>> http://git.rtems.org/rtems/tree/c/src/lib/libbsp/powerpc/psim/startup/linkcmds
>>>>
>>>> "Binkowski, Cassio" <cassioiks at gmail.com> wrote:
>>>>
>>>>
>>>>  I'm also getting the following error when I uncomment the function
>>>> that creates 10 partitions to be used by my application:
>>>>
>>>>  *core_find_mapping() - access to unmaped address, attach a default
>>>> map to handle this - addr=0x1000d2c nr_bytes=0x4 processor=0xa8e5000
>>>> cia=0x1028c*
>>>>  *
>>>> *
>>>> Can you please help?
>>>>
>>>>
>>>> On Wed, May 1, 2013 at 5:44 PM, Binkowski, Cassio <cassioiks at gmail.com>wrote:
>>>>
>>>>> The file 'events.c' is inside /gdb-7.5.1/sim/ppc.
>>>>>
>>>>>  I am using psim-gdb testing my own application, it's not an RTEMS
>>>>> example.
>>>>>
>>>>>  I managed to break right on it, and it stops at:
>>>>> ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:58
>>>>>
>>>>>  Signature is the following:
>>>>>  the_source=the_source at entry=INTERNAL_ERROR_CORE,
>>>>> is_internal=is_internal at entry=true,
>>>>>     the_error=the_error at entry=5)
>>>>>
>>>>>  I have no clue of what it can be. Do you have any idea?
>>>>>
>>>>>
>>>>> On Wed, May 1, 2013 at 5:37 PM, Joel Sherrill <
>>>>> Joel.Sherrill at oarcorp.com> wrote:
>>>>>
>>>>>>  Where is the file events.c?
>>>>>>
>>>>>> Break at the fault handler printing that.
>>>>>>
>>>>>> Does this happen with any rtems provided examples?
>>>>>>
>>>>>> Are you using the psim or psim-gdb script to run it?
>>>>>>
>>>>>> "Binkowski, Cassio" <cassioiks at gmail.com> wrote:
>>>>>>
>>>>>>
>>>>>>   Hi everyone,
>>>>>>
>>>>>>  I was just testing my application using PSIM and it is returning
>>>>>> the following lines, right after starting a Task:
>>>>>>
>>>>>>  *rtems-4.10.99.0(PowerPC/Generic (classic FPU)/psim) PANIC ERROR 5*
>>>>>> *events.c:404: assertion failed - events->time_from_event > 0*
>>>>>>
>>>>>>  Has anybody experienced this before?
>>>>>>
>>>>>>  Thanks.
>>>>>> Cassio
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
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