Virtualbox RTEMS Setup

[Gedare Bloom]

A little more background. RTEMS is cross-compiled, meaning that you
compile RTEMS for a particular target hardware (e.g. x86 or arm) using
your host tools. So you need a toolchain for the target that you want
to execute RTEMS on, and you compile RTEMS for that target and
whichever board support package (BSP) will run. You "install" RTEMS on
the host so that the pre-built RTEMS and BSP are available and then
you will be able to compile applications/examples against the
installed RTEMS. Then you can download and execute your cross-compiled
application on the board (or simulator) supported by that BSP.

So to execute an RTEMS application on a given piece of hardware you need:
* toolchain for the target architecture (e.g. ARM)
* RTEMS configured, compiled, and installed for the architecture and BSP
* application compiled against the installed RTEMS
* a way to download and execute the application on your target

I think that covers the generalities. More specifics are available in
the manuals and on the wiki, or you can ask questions here as you run
into issues...

On Fri, Jul 20, 2012 at 12:56 PM, Gedare Bloom <gedare at rtems.org> wrote:
> maybe this will help: http://www.rtems.com/wiki/index.php/GSoC_Getting_Started
>
> that kind of gives an idea about how to build and "install" RTEMS;
> you'll want to substitute arm for sparc, and the ARM's BSP for sis..
>
> Or read the manuals about building rtems:
> http://rtems.org/onlinedocs/doc-current/share/rtems/html/started/started.html
>
> On Fri, Jul 20, 2012 at 12:39 PM, Aric Hunter <aricahunter at gmail.com> wrote:
>> Can you go back a step. How did you install arm?
>> I have /usr/local/bin/qemu-system-arm
>> but I don't have /opt/rtems-4.11/arm-rtemseabi4.11
>>
>> I'm sorry that I'm such an rtems noob.
>> I'm an intern and I'm pretty good with typical programming, but rtems is
>> slightly beyond me. I'm just trying to get an rtems station set up for
>> another employee.
>>
>>
>> On Fri, Jul 20, 2012 at 6:31 AM, Steven Grunza <sgrunza at ctdi.com> wrote:
>>>
>>> See replies in-line
>>>
>>> > -----Original Message-----
>>> > From: Aric Hunter [mailto:aricahunter at gmail.com]
>>> > Sent: Thursday, July 19, 2012 6:28 PM
>>> > To: Steven Grunza
>>> > Cc: rtems-users at rtems.org
>>> > Subject: Re: Virtualbox RTEMS Setup
>>> >
>>> > does the configure file run those patches (I've never used a patch
>>> > file)?
>>>
>>> No.  It's a manual operation.  Typically I use a command sequence such
>>> as the following:
>>>
>>> {Acquire the correct version source files}
>>>
>>> git clone git://git.qemu.org/qemu.git qemu.git
>>>
>>> cd qemu.git
>>>
>>> cat 0001-target-arm-Fixed-ARMv7-M-SHPR-access.patch | patch -p1
>>>
>>>
>>> The problem is getting the correct version source files.  The qemu
>>> project was at version 1.0.50 when the patches were created.  I was able
>>> to use version 1.0.90.  QEMU now appears to be at version 1.1.50 and the
>>> patches do not apply properly.  Perhaps they are no longer needed?
>>>
>>>
>>>
>>> > and what example did you use? I don't see any test files
>>> > (hello.exe) in the b-lm3s6965 branch.
>>> >
>>> >
>>>
>>> I used the example applications for RTEMS.  These are sample
>>> applications that (as far as I know) work with any version of RTEMS.  I
>>> got them by doing the following:
>>>
>>>
>>>
>>> git clone git://git.rtems.org/examples-v2.git examples-v2.git
>>>
>>> cd examples-v2.git/hello/hello_world_c
>>>
>>> export RTEMS_MAKEFILE_PATH=/opt/rtems-4.11/arm-rtemseabi4.11/lm3s6965
>>>
>>> make
>>>
>>> cd o-optimize
>>>
>>> grunzasr at stm32dbg% which qemu-system-arm
>>> /usr/local/bin/qemu-system-arm
>>>
>>> grunzasr at stm32dbg% /usr/local/bin/qemu\-system\-arm --version
>>> QEMU emulator version 1.0.90, Copyright (c) 2003-2008 Fabrice Bellard
>>>
>>> {Note: This is the patched version of qemu}
>>>
>>>
>>> grunzasr at stm32dbg% qemu-system-arm -nographic -M lm3s6965evb -kernel
>>> hello.ralf
>>>
>>>
>>> *** HELLO WORLD TEST ***
>>> Hello World
>>> *** END OF HELLO WORLD TEST ***
>>
>>
>>
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