[BUG] Verilator 4.014 error | followed as per travis-ci

[jyrj]

Is there an existing CVA6 bug for this?

• [X] I have searched the existing bug issues

Bug Description

I have been trying to compile the simulation files of CVA6 using the make verilate command. I have set everything using the scripts found in travis-ci-emul.sh But execution of make command throws error as:

%Error: /home2/jayaraj/Desktop/cva-6-issue/cva6/corev_apu/src/tech_cells_generic/src/rtl/tc_sram.sv:93: Unsupported or unknown PLI call: $urandom
%Error: /home2/jayaraj/Desktop/cva-6-issue/cva6/corev_apu/src/tech_cells_generic/src/rtl/tc_clk.sv:87: syntax error, unexpected TIME NUMBER, expecting TYPE-IDENTIFIER
%Error: /home2/jayaraj/Desktop/cva-6-issue/cva6/corev_apu/src/tech_cells_generic/src/rtl/tc_clk.sv:90: syntax error, unexpected output, expecting IDENTIFIER or do or final

I think it is a verilator version issue. But I have used the same version mentioned in the script.

Operating System: Ubuntu 20.04.4 LTS Kernel: Linux 5.11.0-27-generic Architecture: x86-64

[MikeOpenHWGroup]

Hi @jyrj, thanks for reporting your issue. You will need at least V4.100 to compile and simulate the CVA6 with Verilator.

The README provides some information about other versions of Verilator that do not properly support the CVA6.

[jyrj]

The ci/install-verilator.sh script uses: wget https://www.veripool.org/ftp/verilator-4.014.tgz Kindly update it, would be helpful in future.

Also, please suggest a version that would work for verilating.

[Sorry for label, used default issue template]

[MikeOpenHWGroup]

I am using Verilator v4.100 and I do not see your issue. Please give that version a try.

Can you create a second issue for the install-verilator.sh script issue? We try not to mix multiple problems into a single GitHub issue. Thanks!

[jyrj]

@MikeOpenHWGroup , the issue is when we use the sources to build (4.110). When I used the .tgz file, changing the version numbers in install-verilator.sh is working correctly and is sufficient to correctly use the verilator. I have successfully compiled the simulation files using 4.110.

[jyrj]

CVA6 managed to run when I changed the version number found in install-verilator.sh file to 4.110 [and corresponding paths]. Kindly note when I build the same version of verilator from source, it didn't worked. However thank you for porting the cva6 to new verilator.

Now it works perfectly with 4.110.