[GSoC] "RPi BSP improvement" idea separation

[Joel Sherrill]

On 3/16/2015 2:57 PM, Yurii Shevtsov wrote:
>> On 3/16/2015 2:37 PM, Gedare Bloom wrote:
>>> On Mon, Mar 16, 2015 at 3:21 PM, Joel Sherrill
>>> <joel.sherrill at oarcorp.com> wrote:
>>>> I don't know if this has been posted or merged into the WIki.
>>>> Alan, Gedare and I were discussing this earlier today. One thing
>>>> to remember is that it is always possible something we think
>>>> is 1/2 a summer is incredibly easy so bonus tasks should be
>>>> defined for every student. In broad strokes, a possible breakdown
>>>> could be.
>>>>
>>>> + Complete GPIO/I2C/SPI integration and add SD card
>>>>   support (since it uses SPI)
>>>>
>>>> + USB and Network stack based on new BSP stack
>> My understanding is that USB will need to be done first since
>> the NIC is on the other side of USB.
>>
>> https://wiki.freebsd.org/FreeBSD/arm/Raspberry%20Pi
>>
>> makes it look like both USB and the NIC could come up easy.
>> And there is the potential to leverage more code.
>>>> + Raspberry Pi 2 optimization and SMP support
>>>>   Basic support is merged but the cache is clearly
>>>>   not in the right state based on benchmarks and
>>>>   the MMU might need initialization based on an
>>>>   early report from Alan. For sure, all capabilities
>>>>   that work now or begin to work on the Pi1 will
>>>>   need to be checked on Pi 2.
>>>>
>>> My intuition is there needs to be extra work added beyond just
>>> fine-tuning the RPI2.
>> +1 I just don't know what that is either. :)
>>>> + User interface stack
>>>>   This could include an HDMI/USB console, and perhaps a
>>>>   port for the RTEMS graphics library. Obviously, you
>>>>   can't use any USB devices for UI unless the USB stack
>>>>   works so the USB effort would bring that up while
>>>>   doing the graphics work. Then move to USB UI devices.
>>>>
>>> Avoid proposing any work that overlaps (conflict or dependent) on
>>> another. No USB UI devices should be proposed.
>> Yes. The first step of this one could be to get the Graphics Toolkit into
>> the RSB.
>>
>> Then leave USB UI devices as bonus work.
> BTW, what do you mean by USB UI device? Something like external video card?
I am primarily thinking keyboard and mouse. User interface devices.
The video should (hopefully) be usable without incorporating pure
GPL code. FreeBSD and Minix should be references there.

-- 
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joel.sherrill at OARcorp.com        On-Line Applications Research
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