<https://opensource.googleblog.com/2022/10/announcing-globalfoundries-open-mpw-shuttle-program.html>

proppy

10/31/2022, 4:14 PM

https://opensource.googleblog.com/2022/10/announcing-globalfoundries-open-mpw-shuttle-program.html

👍 6

Kauser Johar

10/31/2022, 4:33 PM

Looking at the latest version of Caravel SoC on Github, it appears sky130 cells are still hand instantiated. I'm assuming a big merge is pending which makes it parameterizable? Without it, I'm struggling to see how a submission to GF180 can be made. In order to test user project gate level simulations we need Caravel SoC.

proppy

10/31/2022, 5:49 PM

efabless (/cc @jeffdi) created a separate repo for the gf180mcu caravel, see https://github.com/efabless/caravel-gf180mcu/ (and https://github.com/efabless/caravel_mgmt_soc_gf180mcu for the mgmt soc)

👍 1

proppy

10/31/2022, 5:50 PM

those are being selected by the

caravel_user_project

depending on the

PDK

environment variable: https://github.com/efabless/caravel_user_project/blob/main/Makefile#L69

Ruige Lee

11/01/2022, 8:30 AM

@proppy I still got sky130A and sky130B in

dependencies/pdks

after

make pdk-with-volare

even $PDK=gf180mcuC and caravel is on tag: gfmpw-0a Maybe the Makefile is not clean?

Matt Venn

11/01/2022, 8:32 AM

I'm also unable to get the gf180 pdk installed

proppy

11/01/2022, 8:44 AM

@Ruige Lee did you follow the quick start? https://caravel-user-project.readthedocs.io/en/latest/#quickstart

proppy

11/01/2022, 8:47 AM

This the right volare version https://github.com/efabless/volare/releases/tag/gf180mcu-120b0bd69c745825a0b8b76f364043a1cd08bb6a

proppy

11/01/2022, 8:51 AM

I suspect they got the OPEN_PDKS_COMMIT wrong in the Makefile

proppy

11/01/2022, 8:51 AM

It should be https://github.com/efabless/caravel-gf180mcu/blob/main/Makefile#L85

proppy

11/01/2022, 8:52 AM

But it's https://github.com/efabless/caravel_user_project/blob/main/Makefile#L76

proppy

11/01/2022, 8:52 AM

Let's send a PR!

👍 1

proppy

11/01/2022, 8:54 AM

https://github.com/efabless/caravel_user_project/pull/175

proppy

11/01/2022, 8:54 AM

Did that from my phone, so no guarantee:p

🤣 1

proppy

11/01/2022, 8:55 AM

cc @jeffdi

Ruige Lee

11/01/2022, 8:59 AM

No, I still got sky130, there must be something wrong.

Ruige Lee

11/01/2022, 9:10 AM

https://github.com/efabless/caravel-gf180mcu/blob/c61f1cedc03907c1097df9a81f7b4fee0d110f4f/Makefile#L1267

@volare enable ${OPEN_PDKS_COMMIT}

should be

@volare enable --pdk gf180mcu ${OPEN_PDKS_COMMIT}

proppy

11/01/2022, 10:45 AM

Oh yes that too!

proppy

11/01/2022, 10:46 AM

I see you already created a PR https://github.com/efabless/caravel-gf180mcu/pull/5

proppy

11/01/2022, 10:47 AM

Let's make sure we reference it from the other one as well.

👀 1

proppy

11/01/2022, 10:51 AM

@Ruige Lee @Matt Venn I don't have access to either of the repo so this will need to wait for one of the efabless staff to review (/cc @jeffdi @Tim Edwards @mkk @donn)

👍 1

jeffdi

11/02/2022, 2:14 PM

@proppy the pdk in the PR is incorrect. the issue is the pdk is not built and pushed to volare. fixing this now.

jeffdi

11/02/2022, 2:15 PM

in the interim, you can use

volare build 0059588eebfc704681dc2368bd1d33d96281d10f

to build the pdk locally after

make setup

jeffdi

11/02/2022, 2:17 PM

Note - you must also

export PDK=gf180mcuC

per the quickstart instructions before running

make setup

proppy

11/03/2022, 1:01 AM

I think you would also have to pass

--pdk gf180mcu

proppy

11/03/2022, 1:02 AM

and this would take a looong time.

proppy

11/03/2022, 1:02 AM

Any reason we don't point yo the gf180mcu pre-release referenced in https://github.com/efabless/caravel_user_project/pull/175 in the interim, I believe that one has been extensively tested.

Ethan Mahintorabi

11/03/2022, 1:32 AM

@jeffdi We are burning useful days as is let's use the pre-release unless there's a good reason not to.

Ethan Mahintorabi

11/03/2022, 1:33 AM

@Tim 'mithro' Ansell For awareness.

Lab Lecture

11/03/2022, 4:39 AM

I think the caraval user project repo is broken for sky130 now (may be due to gf180mcuC). Tried to harden my IP after checking out fresh today. Got the error: [ERROR]: The version of open_pdks used in building the PDK does not match the version OpenLane was tested on (installed: 120b0bd69c745825a0b8b76f364043a1cd08bb6a, tested: 41c0908b47130d5675ff8484255b43f66463a7d6) This may introduce some issues. You may want to re-install the PDK by invoking

make pdk

. [ERROR]: Please update your environment. OpenLane will now quit.

proppy

11/03/2022, 5:25 AM

@Lab Lecture ah interesting I was looking at a recent change to the Makefile and it should disable the mismatches check, see https://github.com/efabless/caravel_user_project/blob/8562ed8e49e90ff46a8fb53d56a82023147e817c/openlane/Makefile#L31

proppy

11/03/2022, 5:26 AM

Can you confirm the command that are invoked with the full log?

Lab Lecture

11/03/2022, 6:16 AM

git clone <my public github repo> cd <my dir> export OPENLANE_ROOT=$PWD/dependencies/openlane_src export PDK_ROOT=$PWD/dependencies/pdks make setup (no issues till here) make <myIP> - Error

proppy

11/03/2022, 8:20 AM

@Lab Lecture do you mind filing an issue against https://github.com/efabless/caravel_user_project with the complete output logs?

proppy

11/03/2022, 8:20 AM

I suspect it's related to what we discussed in https://github.com/efabless/caravel_user_project/pull/175

proppy

11/03/2022, 8:57 AM

I justed tested it the flow end to end: https://github.com/efabless/caravel_user_project/pull/175#issuecomment-1301803114

proppy

11/03/2022, 11:34 PM

filed an issue to collect the current state of things https://github.com/efabless/caravel_user_project/issues/179 (cc @Andrew Wright)

proppy

11/04/2022, 6:06 PM

@jeffdi just fixed https://github.com/efabless/caravel_user_project/issues/179 by publishing https://github.com/efabless/volare/releases/tag/gf180mcu-0059588eebfc704681dc2368bd1d33d96281d10f, the instructions on https://caravel-user-project.readthedocs.io/en/latest/#quickstart should now work without any workarounds.

Lab Lecture

11/07/2022, 7:08 AM

Today I was able to run the full flow with sky130B. It seems, the problem is resolved

👍 1

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