display statement in el2_ifu.sv

[KinzaQamar]

Hi, I saw these lines in el2_ifu.sv file https://github.com/chipsalliance/Cores-SweRV-EL2/blob/7045b803cab825bc3bb3dbca0cb019e55098acc4/design/ifu/el2_ifu.sv#L340-L362 If we see line num 340, it says: https://github.com/chipsalliance/Cores-SweRV-EL2/blob/7045b803cab825bc3bb3dbca0cb019e55098acc4/design/ifu/el2_ifu.sv#L340-L341 That on every falling edge of clock, if mcyclel value = 32'h00000010 then we will see all the $display statements. However, when I write the csr mcyclel with 32`h00000010 it does nothing.

Can anybody help me out about how can I generate all the display statements? As I am currently understanding branch prediction of SweRV EL2, visualizing the results with the help of display statement would speedup my progress.

Thankyou,

[KinzaQamar]

I am writing 32'h00000010 on 0xB80 (address of mycylel). Am I following the correct direction?

[agrobman]

it's designer's leftover to debug his stuff, I'm not sure about mcycle reference there , but you need to provide DUMP_BTB_ON define to compile this code...

[KinzaQamar]

Yes, I had noticed that later. Can you let me know about how I can set this define DUMP_BTB_ON . I can't find this define other than el2_ifu.sv.

[agrobman]

add define DUMP_BTB_ON in the beginning of the el2_ifu.sv file. or add+define+DUMP_BTB_ON` in your simulator compile command or in testbench/flist file

[agrobman]

need to `define ... in the el2_ifu.sv file . BTW, you don't need to write to mcycle in your test.

[KinzaQamar]

I have tried both ways but it didn't work