Re: Raspberry pi not working with latest compiler and rtems-git

[Alan Cudmore]

Hi Pavel,
I can confirm that your branch and the RTEMS git head work on my Pi A+ and Pi 
Zero now. 

The console works when connected. For me, it will not automatically switch to 
the serial port if the HDMI cable is not connected. I have to comment out the 
cmdline.txt console switches. 

The Pi 2 works too, but with the older firmware. I still need to debug that. 

At least I can get back to trying the recently submitted SPI code.

Thanks,
Alan


> On Jun 21, 2016, at 7:24 PM, Pavel Pisa  wrote:
> 
> Hello Alan,
> 
> On Wednesday 22 of June 2016 01:00:39 Alan Cudmore wrote:
>> Hi Pavel,
>> The HDMI Console! I do have it enabled, so I’m sure that’s it.
>> You saved me a lot of time.
>> Thanks,
>> Alan
> 
> but at least on my board/setup when RPi HDMI connector
> is not connected to monitor then console is not switches/
> ticker output continues on the serial port.
> 
> The detection is little hacky/comparison with know default
> width/height.
> 
> So if you do not have connected monitor output should
> work. Or your board reports different state/resolution
> in disconnected case.
> 
> It would be much better if some firmware function
> is know to explicitly report monitor is/is not connected.
> But Get EDID block functions describes that it returns
> one block unconditionally
> 
> https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface
> 
> If it could report error if monitor is not connected
> then it would be better. It would worth to test that
> wit different firmwares and monitors connected/disconnected
> in future.
> 
> Best wishes,
> 
>  Pavel
> 

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Re: Raspberry pi not working with latest compiler and rtems-git

[Pavel Pisa]

Hello Alan,

On Wednesday 22 of June 2016 01:00:39 Alan Cudmore wrote:
> Hi Pavel,
> The HDMI Console! I do have it enabled, so I’m sure that’s it.
> You saved me a lot of time.
> Thanks,
> Alan

but at least on my board/setup when RPi HDMI connector
is not connected to monitor then console is not switches/
ticker output continues on the serial port.

The detection is little hacky/comparison with know default
width/height.

So if you do not have connected monitor output should
work. Or your board reports different state/resolution
in disconnected case.

It would be much better if some firmware function
is know to explicitly report monitor is/is not connected.
But Get EDID block functions describes that it returns
one block unconditionally

https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface

If it could report error if monitor is not connected
then it would be better. It would worth to test that
wit different firmwares and monitors connected/disconnected
in future.

Best wishes,

  Pavel

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Re: Raspberry pi not working with latest compiler and rtems-git

[Alan Cudmore]

Hi Pavel,
The HDMI Console! I do have it enabled, so I’m sure that’s it. 
You saved me a lot of time.
Thanks,
Alan

> On Jun 21, 2016, at 4:53 PM, Pavel Pisa  wrote:
> 
> Hello Alan,
> 
> On Tuesday 21 of June 2016 20:41:43 Alan Cudmore wrote:
>> Hi Pavel,
>> I compiled your branch, and it stopped on after the last line below ( on
>> the Pi Model A+ )
>> 
>> Now I think it may be the options I use to compile the BSP. What configure
>> options do you use for the Pi?
> 
> My RPi1 config is
> 
> ../../../git/rtems/configure --target=arm-rtems4.12 --prefix=/opt/rtems4.12 \
>  --enable-rtems-inlines --disable-multiprocessing --enable-cxx \
>  --enable-rdbg --enable-maintainer-mode --enable-tests=samples \
>  --disable-networking --enable-posix --disable-itron --disable-ada \
>  --disable-expada --disable-multilib --disable-docs \
>  --enable-rtemsbsp="raspberrypi"
> 
> RPi2 (tested only on QEMU)
> 
> ../../../git/rtems/configure --target=arm-rtems4.12 --prefix=/opt/rtems4.12 \
>  --enable-rtems-inlines --disable-multiprocessing --enable-cxx \
>  --enable-rdbg --enable-maintainer-mode --enable-tests=samples \
>  --enable-networking --enable-posix --disable-itron --disable-ada \
>  --disable-expada --disable-multilib --disable-docs \
>  --enable-rtemsbsp="raspberrypi2"
> 
> May it be, that some options are historical reminiscences
> to previous RTEMS versions.
> I think that --enable-rtems-inlines is ignored/not recognized
> by actual version.
> 
> 
> As for the output, if it is not simplified then there is something strange
> 
>> bsp_console_select:
>> 
>>  rpi_video_is_initialized OK
> ...
>> _Thread_Start_multitasking ...
>> 
>> _Thread_Start_multitasking:
>> 
>> printk test ...
> 
> should be followed by " printk test OK" in the hacked
> version
> 
> https://github.com/ppisa/rtems/blob/rtems-rpi-devel/cpukit/score/src/threadstartmultitasking.c#L31
> 
>  ll_strout("_Thread_Start_multitasking:\n");
>  ll_strout(" printk test ...\n");
>  printk(" printk test OK\n");
> 
> if the printk output does not appear then it can be redirected to HDMI
> output or something else is broken in console driver or related setup.
> 
>> _Thread_Get_heir_and_make_it_executing ...
>> 
>> _Profiling_Thread_dispatch_disable ...
> 
> Is it possible that you have left console redirection to HDMI
> in config.txt ? The line is not checked for '#' comment leading
> character so you need to rename file or remove/alter option.
> 
> To ensure that there is not some error hidden on my side
> by use of U-boot, I have checked actual RTME GIT master
> build on RPi1 B+ with direct boot through config.txt
> kernel option in addition to TFTP load test and both
> seems to work OK with both, serial and HDMI console.
> 
> Please, can you test version with HACK applied on RPi2?
> 
> I have (force) updated my GitHub rtems-rpi-devel branch
> to actual mainline + HACK. But there should not be
> a difference.
> 
> Best wishes,
> 
> Pavel

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Re: Raspberry pi not working with latest compiler and rtems-git

[Pavel Pisa]

Hello Alan,

On Friday 17 of June 2016 19:04:58 Alan Cudmore wrote:
> I refreshed my RSB build and pulled the latest rtems git changes. ( as of
> today ) and the Raspberry Pi BSPs are not working.
> I built the sparc/sis RSB and BSP and my tests run fine on that.
> I will troubleshoot in the next day or so and try to find the error.
>
> What is the best ARM simulator BSP to try?
> I have qemu-system-arm 2.5.0 installed, and I can run some bare metal
> examples using the -M versatilepb sim.
>
> Thanks,
> Alan

I have successfully build and run actual RTEMS master on RPi1 B+
but with U-boot load. Last commit

commit 16706b723f788cd26a3d5cb475f5468a68dcf263
Author: Sebastian Huber 
Date:   Fri Jun 17 08:06:56 2016 +0200

bsps: Fix printk() format warning

I have pushed set of my debug prints hacks to my personal
rtems-rpi-devel branch on GitHub

  https://github.com/ppisa/rtems/tree/rtems-rpi-devel

Commit

   "HACKS to locate Raspberry Pi boot problems."


Try to build that version of RTEMS and run it on RPi1 and RPi2
where you experience problems.

Best wishes,

 Pavel
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Raspberry pi not working with latest compiler and rtems-git

[Alan Cudmore]

I refreshed my RSB build and pulled the latest rtems git changes. ( as of
today ) and the Raspberry Pi BSPs are not working.
I built the sparc/sis RSB and BSP and my tests run fine on that.
I will troubleshoot in the next day or so and try to find the error.

What is the best ARM simulator BSP to try?
I have qemu-system-arm 2.5.0 installed, and I can run some bare metal
examples using the -M versatilepb sim.

Thanks,
Alan
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