Creating an BSP for Microblaze?

[Gedare Bloom]

IIRC Eric Norum was looking at this.


On Tue, Dec 4, 2012 at 1:19 PM, Joel Sherrill <joel.sherrill at oarcorp.com>wrote:

> On 12/4/2012 11:28 AM, Sebastian Huber wrote:
>
>> Hello,
>>
>> On 04/12/12 16:09, Matthias Goldhoorn wrote:
>>
>>> Hello Devel's,
>>> we are currently thinking about using rtems on out Suzaku-S Boards.
>>> This boards carry an Xilinx Spartan FPGA, we currently using an
>>> Microblaze Processor and µCLinux.
>>> We maybe want to swap no rtems.
>>>
>>> First and most important question:
>>> 1. Is there any ongoing work to create BSPs for the microblaze arch?,
>>>
>> I don't know.
>>
>
> There was some email on the list in the past few months from someone who
> appeared to be working on this. Search the email list for that.
>
> I have a branch in my personal repo with a starting point for a port with a
> BSP cut for the simulator in GDB. See http://git.rtems.org/joel/**
> rtems.git/ <http://git.rtems.org/joel/rtems.git/>
>
>  I already saw that the gcc-toolchain was already created to build for
>>> this target.
>>> 2. If not, how log you are assuming do an Computer Scientist without
>>> any RTEMS knowledge need to create an BSP for this?
>>>
>>>  Lets suppose the tool chain works, then the next step is to do the basic
>> CPU port.  This includes primitive ABI settings like stack alignment and
>> more complex stuff like context switching and interrupt handling.  You
>> have to do the low level system initialization on a simulator or
>> evaluation board (set up C runtime environment, cache, memory
>> controller, PLL, etc.). This is largely operating system independent.
>> You have to create drivers for basic thinks like the clock tick and
>> console.  You have to learn the development environment for the FPGA.
>> It is hard to estimate a time frame for all of this.  I would say its
>> more than three weeks.  It might be more efficient to hire a company for
>> basic support.
>>
>>  Agreed. I have done a lot of ports to new architectures and the time
> varies
> based on availability and ease of use of simulator, what can be done on
> the simulator, and how complicated the desired BSP really is.
>
> I don't like to do marketing on the mailing list but if you want someone to
> do this or just consulting on the steps, email me and Sebastian off list.
>
> --
> Joel Sherrill, Ph.D.             Director of Research & Development
> joel.sherrill at OARcorp.com        On-Line Applications Research
> Ask me about RTEMS: a free RTOS  Huntsville AL 35805
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>
>
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