[BUG] ASIC synthesis failed related to ariane_pkg.sv

[andriami]

Is there an existing CVA6 bug for this?

• I have searched the existing bug issues

Bug Description

Hi,

I am trying to implement the CVA6 on ASIC by using the proposed flow. I have errors related to ariane_pkg.sv synthesis.

Compiling source file ../..//core/include/ariane_pkg.sv
Error:  ../..//core/include/ariane_pkg.sv:169: Package 'ariane_pkg' has not been analyzed for import or content extraction. (VER-224) 

This is due to the use of ariane_pkg inside the ariane_pkg itself.

localparam int unsigned INSTR_PER_FETCH = RVC == 1'b1 ? (FETCH_WIDTH / 16) : 1;
localparam int unsigned LOG2_INSTR_PER_FETCH = RVC == 1'b1 ? $clog2(
   ariane_pkg::INSTR_PER_FETCH
) : 1;

To resolve this issue, I removed the ariane_pkg before INSTR_PER_FETCH.

localparam int unsigned INSTR_PER_FETCH = RVC == 1'b1 ? (FETCH_WIDTH / 16) : 1;
localparam int unsigned LOG2_INSTR_PER_FETCH = RVC == 1'b1 ? $clog2(
   INSTR_PER_FETCH
) : 1;

Do you know another way of solving this issue?

Thanks

[JeanRochCoulon]

Hello @andriami
The ASIC synthesis runs on CI. We run also regularly it in interactive way. I do not see why you get a bug due to RTL. What is your Dc_shell version ?

[andriami]

Hi @JeanRochCoulon,

Thank you for your answer!
I am using version P-2019.03 of DC.

[JeanRochCoulon]

We use S-2021.09-SP1-1. Thsi can be the root cause.
As your suggested fix seems good to me. Can I ask you to submit a PR ?
As we did not succeed in reproducing the issue on CI and we proposed to modify the RTL to workaround the issue. I change the label from "bug" to "enhancement".

[JeanRochCoulon]

CLosed because fixed by #1750.

[hhhsiang]

hi @andriami , can you synthesize cva6 core successfully now?

[andriami]

Hi @hhhsiang, I successfully synthesized it using the May 22nd, 2024 version, but I haven't tried it with the latest version yet.

[hhhsiang]

@andriami ,did you synthesize it with the makefile under pd/synth, or you create a script on your own? Which config pkg did you use to synthesize? Is that cv64a6_imafdc_sv39_config_pkg.sv?

I encounter error like this issue:#2544
Thanks in advance!

[andriami]

Hi @hhhsiang, yes I used the makefile under pd/syn and the cv64a6_imafdc_sv39_config_pkg.sv config. I didn't encounter the issue #2544 you mentioned. For information, we have used an older version ( Q-2019.12) of DC.