No Object name Hwacha

[HakamAtassi]

Background Work

• [X] Yes, I searched the mailing list
• [X] Yes, I searched prior issues
• [X] Yes, I searched the documentation

Chipyard Version and Hash

Release: 1.10.0 Hash: b7644b24

OS Setup

Ex: Output of uname -a + lsb_release -a + printenv + conda list

Other Setup

I'm trying to get Hwacha added to the base Rocket-chip config provided in chipyard. Based on

https://chipyard.readthedocs.io/en/stable/Generators/Hwacha.html

adding hwacha.DefaultHwachaConfig to

chipyard/generators/rocket-chip/src/main/scala/system/Configs.scala under

class BaseConfig extends Config( new WithDefaultMemPort ++ new WithDefaultMMIOPort ++ new WithDefaultSlavePort ++ new WithTimebase(BigInt(1000000)) ++ // 1 MHz new WithDTS("freechips,rocketchip-unknown", Nil) ++ new WithNExtTopInterrupts(2) ++ new hwacha.DefaultHwachaConfig ++ // <= NEW new BaseSubsystemConfig )

Should work

Current Behavior

Running

make VERILATOR_THREADS=8 NUMACTL=1

in generators/rocket-chip/emulator

causes

[error] /home/hakam/Repos/chipyard/generators/rocket-chip/src/main/scala/system/Configs.scala:21:7: not found: value hwacha [error] new hwacha.DefaultHwachaConfig ++ [error] ^ [error] one error found

Which makes sense, since hwacha is not really defined anywhere.

Now the question is, how and where is hwacha supposed to be defined?

adding

lazy val hwacha = (project in file("hwacha")) .settings(commonSettings) .settings(publishArtifact := false)

to build.sbt has not helped

I'm not entirely sure how to proceed. I have not been able to find other repos that publicly use hwacha nor have I found any documentation on adding hwacha to a rocket core within chipyard that demonstrates how to instantiate a "hwacha" object. Rocket-chip by default uses hardfloat, but hardfloat is already included within the rocket-chip file, where as hwacha is not.

I have also tried moving the hwacha file to the Rocket-chip file, but that just causes all sorts of package namespace issues, and am also pretty confident that that is not the correct way to instantiate a hwacha module.

Sort of stumped. Would really appreciate some help. Thanks

Expected Behavior

verilator make runs fine and executres custom hwacha opcodes/tests.

Other Information

No response

[jerryz123]

Without making any modifications to Chipyard or rocket chip, run make CONFIG=HwachaRocketConfig.

https://chipyard.readthedocs.io/en/stable/Generators/Hwacha.html

[HakamAtassi]

Thanks for the quick response. Running make CONFIG=HwachaRocketConfig successfully builds the the .jar but seemlingly not the emulator:

The make is to be run in rocket-chip/emulator, correct?

[jerryz123]

No. Please follow the Chipyard documentation, which instructs you to run it in Chipyard/sims/verilator

[HakamAtassi]

It seems to be segmenting on a test that normally runs sucessfully on a default rocketchip. I recloned the repo to verify that this was not a result of a config that I modified. Same problem.

I referred back to the docs and retried the entire build using esp tools (which I believe is correct) and now have this issue:

Which kills the make. I do actually think this is a typo. I fixed the type names manually and continued the make process. It completes but causes the same segmentation issue, even when I build the hello world example in

https://chipyard.readthedocs.io/en/stable/Software/Baremetal.html

Any further suggestions? I appreciate the help. Thanks.

[HakamAtassi]

Ended up building a custom config with rocket and hwacha using the guide provided here:

https://fires.im/micro19-slides-pdf/03_building_custom_socs.pdf

Which seems to work. Thanks.