[J-core] FW: Adding new targets for J2

Gutierrez, Santiago Santiago.Gutierrez at viasat.com
Tue Jun 14 13:46:29 EDT 2016

-----Original Message-----
From: Gutierrez, Santiago 
Sent: Monday, June 13, 2016 4:05 PM
To: 'Geoff Salmon' <gsalmon at se-instruments.com>
Subject: RE: [J-core] Adding new targets for J2

Hi Geoff,

Yes right now I am using the Kintex 7 KC705 Evaluation Board. I myself am not too familiar with ISE I've only used Vivado and Altera's Quartus, however trying to use your code I've noticed that ucf files don't seem to be supported in Vivado anymore, instead they now use xdc (Xilinx Design Constraints) and the program xst which was included in ISE doesn’t seem to be included in Vivado or the accompanying SDK. The xst program is currently keeping me from testing the compilation, there might be more programs that aren’t included in Vivado anymore but so far I only know of that one, and at this point I will most likely install ISE to try and get the compilation to work. You guys have been really helpful, thanks again for taking the time to respond.

Santiago Gutierrez

-----Original Message-----
From: Geoff Salmon [mailto:gsalmon at se-instruments.com] 
Sent: Monday, June 13, 2016 1:18 PM
To: Gutierrez, Santiago <Santiago.Gutierrez at viasat.com>
Cc: j-core at lists.j-core.org
Subject: Re: [J-core] Adding new targets for J2

Hi Santiago

On 06/13/2016 12:09 PM, Gutierrez, Santiago wrote:
> Hello Geoff and Rob,
> Thank you for taking the time to give me all these sources as well as the help. As to the Kintex Board, I am using the standard Kintex 7 Evaluation Board that Xilinx provides.

Is it the Xilinx Kintex-7 FPGA KC705 Evaluation Kit?

> It is just a temporary testing environment however, I will be using the techniques I learn on it on different FPGA's. The IP I will be working with will mostly be the Xilinx provided IP cores for different peripherals, although they will most likely have wrapper hardware for ease of use, so I cannot say for certain what kind of ports they will have.
> Although I will be working with the Kintex 7  right now, I will most likely be porting the J2 core onto multiple different FPGA's and am looking for a quick way of porting them over. I was thinking I'd write a script that could do this all, but I am not sure how long that would take. As such I was wondering if you guys could tell me what files are the actual VHDL files for the J2 processor, so that I could isolate them and perhaps work with just the J2 core directly from Xilinx Vivado.

The J2 processor related VHDL is all under soc_top/components/cpu, mostly in cpu/core and cpu/decode.

I haven't personally used Vivado. We build with the ISE command line tools. The makefile snippet that drives the ISE tools is soc_top/tools/xilinx.mk. xilinx_ise.mk would be a more appropriate name, and in future there could be a xilinx_vivado.mk that uses Vivado instead. It wouldn't be a drop-in replacement, because I think the ucf files also need to be replaced with something else for Vivado. Are there other things that need to change to use Vivado coming from ISE?

- Geoff

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