JTAG data for target FPGA

intel / libaji_client

This is the client side library to access JTAG Server distributed with Quartus (jtagd/jtagserver.exe). The protocol is known as Advanced JTAG Interface (AJI). See src/h/aji.h for available API.

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JTAG data for target FPGA #4

Open Juyash opened 5 months ago

Juyash commented 5 months ago

Hello,

For a hobby project , I need to access the JTAG data by communicating the JTAG server to program a MAX10 FPGA, could you please suggest some solutions/hint to do it.

Thankyou.

FvMP commented 4 months ago

Hi, can you please elaborate your question? What do you exactly want to achieve?

Juyash commented 4 months ago

Hello, i would like to program MAX10 fpga using microcontroller. how the microcontroller can communicate to jtag server in the host pc ?

FvMP commented 4 months ago

Although it doesn't seem to make much sense to me, if remote operation is enabled in server setup, it can be accessed from a microcontroller through network. Consider that JTAG server protocol is relative complex. Acessing MAX10 JTAG directly through an embedded interface would be much simpler.

Juyash commented 4 months ago

yes, you are right.

so the setup look like

host_pc with quartus tool , jtag server( enabled remote operation)
ethernet based microcontroller connected with MAX10 JTAG.

" if remote operation is enabled in server setup, it can be accessed from a microcontroller through network" how microcontroller can access the server through network ?

FvMP commented 4 months ago

O.k., your latest description gives a different picture, you apparently want to connect PC to MAX10 JTAG through microcontroller. That hasn't much to do with libaji, the context of this repository. I suggest to address the question to Intel FPGA forum.

Which JTAG functions do you need? On-chip memory (CFM/UFM) programming, volatile (.sof) programming, debug functions, e.g. Signaltap. For On-chip memory programming, I'd suggest remote update solutions.

Juyash commented 4 months ago

I am looking for JTAG functions for debug(Signaltap). Could you please suggest remote debug solutions for the PC and microcontroller+MAX10 connected through ethernet.

Thank you.

FvMP commented 4 months ago

Intel solution for remote debug is described in AN693 https://www.intel.com/content/www/us/en/docs/programmable/723698/current.html Addtional info and mmlink sources https://www.rocketboards.org/foswiki/Projects/RemoteSystemDebug https://releases.rocketboards.org/2015.08/remotedebug/src/

Newer solution supported with Quartus Pro is JTAG-over-protocol https://www.intel.com/content/www/us/en/docs/programmable/728673/21-3.html

Juyash commented 4 months ago

Thankyou.

As per AN693, Altera SoC is required. The mmlink can only be used in HPS. and JTAG-over-protocol is supported on SoC not on Intel MAX10

I can't use a SoC, I would like to achieve debugging using a microcontroller.

FvMP commented 4 months ago

Hi, as also mentioned in AN693, the solution can either use external or internal uC. JoP can't be used because it's only supported by Quartus Pro, as stated.

Juyash commented 4 months ago

Hi,

I have carefully read AN693. In case of internal uC, the SLD hub controller driver is required. from Rocketboards my understanding is that "mmlink application that bridges the SLD Hub to the Ethernet:".

If external uC is used, the what physical interface could be used to connect the SLD in FPGA ?

Note ; You cannot remote debug hardware using a JTAG connection through the JTAG TAP controller after instantiating the SLD Hub Controller component. (Reference : Page 3, AN693)

Thank you.