Parallella as a peripheral card

[Orfevre]

Hello world,

Fisrt of all I tried to find solution by myself, but it seems that my basic knowledge in FPGAs isn't enough.

I have as project to use the parallella as a peripheral card, allowing me to use ethernet, SD and USB through PEC_FPGA (my 'master' board communicating through this element)

As I understand after reading some doc., it seems to me that the easier way to do this is to implement HW logic to convert PEC IO into AMBA/AXI structure. For this I should modify the .bit.bin file from my boot-SD card.

So my questions are:
Where can I find the basic code to generate my bitstream? (I create it from parallella-hw-master and planAhead? And so where are the last version of the file?)
If I have an 'independant coded' PEC converter bloc, does it affect the elink? (I wonder, because I would like to keep the Epiphany for further use)

Thank you for your attention and your answers!
Orfevre

[josemonsalve2]

Hi Orfevre,

I am also new, but we are also trying to add a design alongside with the board. I cannot answer yet the second question, but for now I think we were able to generate the original bitstream in vivado.

We used this link

.

and it was pretty much straightforward.

The only problem we had was with the dummy.elf. the link they provided is broken. However it can be found in the git repository for the parallela.



Here are the possible places where you can find it. I don't know if there is any difference between them

./fpga/old/projects/parallella_7010_hdmi/dummy.elf
./fpga/old/projects/parallella_64_7020_headless/dummy.elf
./fpga/old/projects/parallella_64_7020_hdmi/dummy.elf
./fpga/old/projects/parallella_7020_hdmi/dummy.elf
./fpga/old/projects/parallella_7020_headless/dummy.elf
./fpga/old/projects/parallella_7010_headless/dummy.elf

If this isn't enough I can try to make a video going through the steps, but as I said, I am pretty much in the same page that you're right now and I am not completely sure I am doing it right.

At least it is good to know there is someone else going through the same pain

[Orfevre]

Thank you very much for your answer, I will try to generate the bitstream using your method.
I will let you know if I find a solution for keeping the main bitstream