Beaglebone Black RTEMS(Master)

[Christian Mauderer]

Hello Emre,

I haven't really used any GUI libraries on RTEMS. So I have to guess: You
most likely need some graphics driver (frame buffer?). Most likely the PC
BSP has one. But I'm not aware of any frame buffer driver for the BBB. Maybe
someone other has an idea here?

I would guess that the simplest approach is to port the driver from FreeBSD
(assuming that you want to use HDMI).

For the raspberry there has been a GSoC project some years back:
https://devel.rtems.org/wiki/GSoC/2015/rpi_graphic

Maybe you can find some help in the documentation of that project or maybe
Pavel Pisa who mentored that project back then knows something.

Best regards

Christian

----- Ursprüngliche Mail -----
> Von: "Emre Çetin" <hsnemrecetin at gmail.com>
> An: "Christian Mauderer" <christian.mauderer at embedded-brains.de>
> CC: "Chris Johns" <chrisj at rtems.org>, "RTEMS Users" <users at rtems.org>
> Gesendet: Montag, 19. März 2018 17:41:34
> Betreff: Re: Beaglebone Black RTEMS(Master)

> Hello again,
> 
> Thank you for all your help. The repository you talked about is very useful
> Christian, thanks also.
> 
> Now I'll ask you one more question, if you let me. I am working on the
> Rtems GUI, for now. I compiled and ran the RTEMS GUI for the i386
> architecture on QEMU, it worked fine. But when I wanted to do the same for
> Beaglebone Black but not for QEMU, on real board, I could not do it. I did
> some research on this subject, but I did not get a result. Is it possible
> to compile the RTEMS GUI for Beaglebone and use libraries like FLTK or
> frameworks like QT? Is there any source I can follow about this topic? I'm
> new to RTEMS, please forgive me. Thank you.
> 
> With very best regards,
> 
> Emre
> 
> 
> 2018-03-13 12:07 GMT+03:00 Christian Mauderer <
> christian.mauderer at embedded-brains.de>:
> 
>> Am 12.03.2018 um 23:14 schrieb Chris Johns:
>> > On 12/03/2018 23:05, Emre Çetin wrote:
>> >> I can not use sdcard.sh script after configured rtems as
>> bsp=beagleboneblack.
>> >> There is no problem with compiling via arm/beagle, I have all the .exe
>> files but
>> >> I can not convert them to bootable images. Can you any suggestions?
>> Thank you.
>> >> -- My host machine Ubuntu 64bit and rsb.master  --
>> >>
>> >> error: sdcard.sh line 58 $PATCH/bin/newfs_msdos not found
>> >>
>> >
>> > It looks like you are missing the command `newfs_msdos` on your host. I
>> wonder
>> > if this is a FreeBSD [1] only command? A search returns:
>> >
>> > http://manpages.ubuntu.com/manpages/precise/man8/mkfs.msdos.8.html
>> >
>> > which looks like it can do the task. Do you think you could replace
>> > `newfs_msdos` with the command in the man page from the link above, test
>> and
>> > then please report back? You may need to figure out how the option
>> translate.
>> >
>> > Chris
>> >
>> > [1] https://www.freebsd.org/cgi/man.cgi?query=newfs_msdos
>> > _______________________________________________
>> > users mailing list
>> > users at rtems.org
>> > http://lists.rtems.org/mailman/listinfo/users
>> >
>>
>> Hello Emre and Chris,
>>
>> yes the newfs_msdos is some quite special command. There are some others
>> in the script too that are quite FreeBSD specific and some U-Boot tools
>> are necessary too. When I tried to use the script on my Linux machine, I
>> searched all of the tools together and used scripts to build all of them
>> and added a slightly adapted create-sdcardimage.sh. You can find all the
>> scripts in the build subdirectory of this repository:
>>
>>     https://gitlab.com/c-mauderer/rtems-bbb/tree/master
>>
>> The build/build.sh in this repo would build all tools, the BSP and
>> libbsd and installs them into a install subdirectory.
>>
>> But there is an alternative: If you use a recent enough U-Boot on your
>> BBB, you should be able to use just any FAT formatted SD card. Then put
>> a 'uEnv.txt' with the following three lines on the SD card:
>>
>> ----
>> setenv bootdelay 5
>> uenvcmd=run boot
>> boot=fatload mmc 0 0x80800000 app.img ; fatload mmc 0 0x88000000
>> am335x-boneblack.dtb ; bootm 0x80800000 - 0x88000000
>> ----
>>
>> The am335x-boneblack.dtb can be copied from some Linux or FreeBSD image
>> to the SD card. To create your app.img, you have to use some commands
>> including the U-Boot tool mkimage:
>>
>> arm-rtems5-objcopy app.exe -O binary app.bin
>> gzip -9 app.bin
>> mkimage -A arm -O linux -T kernel -a 0x80000000 -e 0x80000000 -n RTEMS
>> -d app.bin.gz app.img
>>
>> With kind regards
>>
>> Christian
>> --
>> --------------------------------------------
>> embedded brains GmbH
>> Herr Christian Mauderer
>> Dornierstr. 4
>> D-82178 Puchheim
>> Germany
>> email: christian.mauderer at embedded-brains.de
>> Phone: +49-89-18 94 741 - 18
>> Fax:   +49-89-18 94 741 - 08
>> PGP: Public key available on request.
>>
>> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.

-- 
--------------------------------------------
embedded brains GmbH
Christian Mauderer
Dornierstr. 4
D-82178 Puchheim
Germany
email: christian.mauderer at embedded-brains.de
Phone: +49-89-18 94 741 - 18
Fax:   +49-89-18 94 741 - 08
PGP: Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.