4.3 Design setup using Caravel_user_project
Table of contents
Prerequisites
To follow this lesson, you need a working linux system with docker installed and started. The instruction to setup the environment is introduced in Lesson 2.1.
When you complete that lesson. You can come back here.
Caravel User Project need python3 virtual environment package that can be installed by this command:
sudo apt-get install python3-venv -y
Introduction
In this lesson, we will learn how to use caravel_user_project to harden our design and integrate it into the caravel_user_project so that it can be fabricated using Caravel Test Harness.
It is recommended to have a github account with the proper setup so that you can checkout and push the change to github. However, it is optional, you can skip the start with the OPTIONAL at the beginning in this tutorial
(OPTIONAL) Create a github repository
- First, we create a repository on github to store our code. This can be done by going to https://github.com and log in with your account credentials. After that you can select the menu to create a new repository.
- In the create new repository page, you will enter the information and select if your repository is public or private. Press ‘Create repository’ when done.
- When your setup is done, you will see the instruction to add files to your new created repository. Please remember the path to your repository because we will need it later.
- It is a good practice to set up an ssh key to access github. You can follow the instructions in this tutorial or this videos.
Clone the repository and run the setup
1. Download the source code using git
Download the source code with the correct release/tag. In this tutorial, we will use the latest release tag of Caravel which is mpw-9k as follows:
git clone -b mpw-9k https://github.com/efabless/caravel_user_project \ uniccass_example cd uniccass_example
cass@unic-cass:~$ git clone -b mpw-9j https://github.com/efabless/caravel_user_project uniccass_example Cloning into 'uniccass_example'... remote: Enumerating objects: 6186, done. remote: Counting objects: 100% (5/5), done. remote: Compressing objects: 100% (5/5), done. remote: Total 6186 (delta 0), reused 0 (delta 0), pack-reused 6181 Receiving objects: 100% (6186/6186), 297.77 MiB | 4.70 MiB/s, done. Resolving deltas: 100% (3533/3533), done. Note: switching to '8a9b6d080160ad1ee840029f525e2eaf71d77585'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false Updating files: 100% (211/211), done.
2. (optional) Change it to your github repository
Next, we will rename the original git url into an upstream so that we can edit the file and push it into our own git repository
git remote rename origin upstream git remote add origin git@github.com:duyhieubui/caravel_uniccas_example.git
You should replace my github with your created repository using the ssh URI that you created in the previous part.
3. (Optional) Create a new branch to work on
We create a new branch so that it will not interfere with the original one
git checkout -b unic-cass
4. (Optional) Push the source code into our repository
We now can push the source code into our own repository and start changing it
git push -u origin unic-cass
Run the setup
1. Set up the environment variables
Next, we need to set up two environment variables PDK. This is needed during the setup because caravel_user_project use a specific version of Skywater 130nm PDK and a specific version of Openlane.
export PDK=sky130A
2. Complete the setup
Next, we need to download the required file for caravel to run by this command:
make setup
cass@unic-cass:~/uniccass_example$ make setup if [ -d "/home/cass/uniccass_example/caravel" ]; then\ echo "Deleting exisiting /home/cass/uniccass_example/caravel" && \ rm -rf /home/cass/uniccass_example/caravel && sleep 2;\ fi echo "Installing caravel-lite.." Installing caravel-lite.. git clone -b mpw-9k https://github.com/efabless/caravel-lite /home/cass/uniccass_example/caravel --depth=1 Cloning into '/home/cass/uniccass_example/caravel'... remote: Enumerating objects: 440, done. remote: Counting objects: 100% (440/440), done. remote: Compressing objects: 100% (300/300), done. remote: Total 440 (delta 135), reused 297 (delta 83), pack-reused 0 Receiving objects: 100% (440/440), 192.74 MiB | 6.96 MiB/s, done. Resolving deltas: 100% (135/135), done. Note: switching to '48f5e70b205848abcd89e33f7912d6932e94b152'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false Updating files: 100% (349/349), done. export CARAVEL_ROOT=/home/cass/uniccass_example/caravel && export MPW_TAG=mpw-9j && make -f /home/cass/uniccass_example/caravel/Makefile check-env make[1]: Entering directory '/home/cass/uniccass_example' make[1]: Nothing to be done for 'check-env'. make[1]: Leaving directory '/home/cass/uniccass_example' export CARAVEL_ROOT=/home/cass/uniccass_example/caravel && export MPW_TAG=mpw-9j && make -f /home/cass/uniccass_example/caravel/Makefile install_mcw make[1]: Entering directory '/home/cass/uniccass_example' if [ -d "/home/cass/uniccass_example/mgmt_core_wrapper" ]; then \ echo "Deleting existing /home/cass/uniccass_example/mgmt_core_wrapper" && \ rm -rf /home/cass/uniccass_example/mgmt_core_wrapper && sleep 2;\ fi Installing mcw-litex-vexriscv.. Cloning into '/home/cass/uniccass_example/mgmt_core_wrapper'... remote: Enumerating objects: 847, done. remote: Counting objects: 100% (847/847), done. remote: Compressing objects: 100% (579/579), done. remote: Total 847 (delta 327), reused 622 (delta 254), pack-reused 0 Receiving objects: 100% (847/847), 441.95 MiB | 7.20 MiB/s, done. Resolving deltas: 100% (327/327), done. Note: switching to '503eda0790085712ffef7f4ad8934c7daed3237f'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false Updating files: 100% (770/770), done. make[1]: Leaving directory '/home/cass/uniccass_example' cd openlane && make openlane make[1]: Entering directory '/home/cass/uniccass_example/openlane' if [ -d "/home/cass/uniccass_example/dependencies/openlane_src" ]; then\ echo "Deleting exisiting /home/cass/uniccass_example/dependencies/openlane_src" && \ rm -rf /home/cass/uniccass_example/dependencies/openlane_src && sleep 2; \ fi git clone https://github.com/The-OpenROAD-Project/OpenLane -b 2023.07.19-1 --depth=1 /home/cass/uniccass_example/dependencies/openlane_src && \ cd /home/cass/uniccass_example/dependencies/openlane_src && \ export OPENLANE_IMAGE_NAME=efabless/openlane:2023.07.19-1 && \ export IMAGE_NAME=efabless/openlane:2023.07.19-1 && \ make pull-openlane Cloning into '/home/cass/uniccass_example/dependencies/openlane_src'... remote: Enumerating objects: 427, done. remote: Counting objects: 100% (427/427), done. remote: Compressing objects: 100% (378/378), done. remote: Total 427 (delta 55), reused 201 (delta 17), pack-reused 0 Receiving objects: 100% (427/427), 8.25 MiB | 8.35 MiB/s, done. Resolving deltas: 100% (55/55), done. Note: switching to '30ee1388932eb55a89ad84ee43997bfe3a386421'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false make[2]: Entering directory '/home/cass/uniccass_example/dependencies/openlane_src' Makefile:23: warning: undefined variable 'DOCKER_SWAP' Makefile:26: warning: undefined variable 'DOCKER_MEMORY' Makefile:42: warning: undefined variable 'ROUTING_CORES' Makefile:84: warning: undefined variable 'STD_CELL_LIBRARY' 2023.07.19-1: Pulling from efabless/openlane 2d473b07cdd5: Already exists e1cbbee2397e: Pulling fs layer 70e8f6ff478a: Pull complete 352fcbed802f: Pull complete ffd26f349b41: Pull complete 35494e6eaa87: Pull complete 3f5fe7bafa8d: Pull complete be7d8cb65024: Pull complete 921f112c30b5: Pull complete ef9d012b4add: Pull complete 93da3611422f: Pull complete 79949c403a26: Pull complete de66efaec11f: Pull complete f94649ef639a: Pull complete 323f9de28156: Pull complete f5f369f038a1: Pull complete 3dc8060a4a53: Pull complete 683b20fbca27: Pull complete b9e056b52fb0: Pull complete 6c5b6eb91b7e: Pull complete 11a468897c64: Pull complete 9fd20dc6ee4a: Pull complete 8c51c188f550: Pull complete 4cf217b5b227: Pull complete eaaa873ba1c3: Pull complete cc5c8eb7fd73: Pull complete 29d424c3ca7d: Pull complete a1764e9008d2: Pull complete d9413a10e34e: Pull complete a5745dd661e2: Pull complete 4f4fb700ef54: Pull complete Digest: sha256:735dcc4c1fe41a44d81b1477f79e480914ada7c201e42716f181e9fa26c5292b Status: Downloaded newer image for efabless/openlane:2023.07.19-1 docker.io/efabless/openlane:2023.07.19-1 make[2]: Leaving directory '/home/cass/uniccass_example/dependencies/openlane_src' make[1]: Leaving directory '/home/cass/uniccass_example/openlane' export CARAVEL_ROOT=/home/cass/uniccass_example/caravel && export MPW_TAG=mpw-9j && make -f /home/cass/uniccass_example/caravel/Makefile pdk-with-volare make[1]: Entering directory '/home/cass/uniccass_example' rm -rf ./venv python3 -m venv ./venv ./venv/bin/python3 -m 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Resolving deltas: 100% (521/521), done. Already up to date. rm -rf ./venv-cocotb python3 -m venv ./venv-cocotb ./venv-cocotb/bin/python3 -m pip install --upgrade --no-cache-dir pip Requirement already satisfied: pip in ./venv-cocotb/lib/python3.10/site-packages (22.0.2) Collecting pip Downloading pip-24.1.2-py3-none-any.whl (1.8 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.8/1.8 MB 7.7 MB/s eta 0:00:00 Installing collected packages: pip Attempting uninstall: pip Found existing installation: pip 22.0.2 Uninstalling pip-22.0.2: Successfully uninstalled pip-22.0.2 Successfully installed pip-24.1.2 ./venv-cocotb/bin/python3 -m pip install --upgrade --no-cache-dir caravel-cocotb Collecting caravel-cocotb Downloading caravel_cocotb-1.2.4-py3-none-any.whl.metadata (14 kB) Collecting PrettyTable (from caravel-cocotb) Downloading prettytable-3.10.2-py3-none-any.whl.metadata (30 kB) Collecting PyYAML (from caravel-cocotb) Downloading PyYAML-6.0.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (2.1 kB) Collecting anytree (from caravel-cocotb) Downloading anytree-2.12.1-py3-none-any.whl.metadata (8.1 kB) Collecting click (from caravel-cocotb) Downloading click-8.1.7-py3-none-any.whl.metadata (3.0 kB) Collecting cocotb==1.8.0 (from caravel-cocotb) Downloading cocotb-1.8.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (6.8 kB) Collecting cocotb-coverage==1.1.0 (from caravel-cocotb) Downloading cocotb_coverage-1.1.0-py3-none-any.whl.metadata (4.0 kB) Collecting oyaml (from caravel-cocotb) Downloading oyaml-1.0-py2.py3-none-any.whl.metadata (1.2 kB) Collecting rich (from caravel-cocotb) Downloading rich-13.7.1-py3-none-any.whl.metadata (18 kB) Collecting tabulate (from caravel-cocotb) Downloading tabulate-0.9.0-py3-none-any.whl.metadata (34 kB) Collecting find-libpython (from cocotb==1.8.0->caravel-cocotb) Downloading find_libpython-0.4.0-py3-none-any.whl.metadata (2.8 kB) Collecting python-constraint (from cocotb-coverage==1.1.0->caravel-cocotb) Downloading python-constraint-1.4.0.tar.bz2 (18 kB) Installing build dependencies ... done Getting requirements to build wheel ... done Preparing metadata (pyproject.toml) ... done Collecting six (from anytree->caravel-cocotb) Downloading six-1.16.0-py2.py3-none-any.whl.metadata (1.8 kB) Collecting wcwidth (from PrettyTable->caravel-cocotb) Downloading wcwidth-0.2.13-py2.py3-none-any.whl.metadata (14 kB) Collecting markdown-it-py>=2.2.0 (from rich->caravel-cocotb) Downloading markdown_it_py-3.0.0-py3-none-any.whl.metadata (6.9 kB) Collecting pygments<3.0.0,>=2.13.0 (from rich->caravel-cocotb) Downloading pygments-2.18.0-py3-none-any.whl.metadata (2.5 kB) Collecting mdurl~=0.1 (from markdown-it-py>=2.2.0->rich->caravel-cocotb) Downloading mdurl-0.1.2-py3-none-any.whl.metadata (1.6 kB) Downloading caravel_cocotb-1.2.4-py3-none-any.whl (70 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 70.9/70.9 kB 3.4 MB/s eta 0:00:00 Downloading cocotb-1.8.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.8 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 3.8/3.8 MB 8.8 MB/s eta 0:00:00 Downloading cocotb_coverage-1.1.0-py3-none-any.whl (31 kB) Downloading anytree-2.12.1-py3-none-any.whl (44 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 44.9/44.9 kB 18.0 MB/s eta 0:00:00 Downloading click-8.1.7-py3-none-any.whl (97 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 97.9/97.9 kB 11.5 MB/s eta 0:00:00 Downloading oyaml-1.0-py2.py3-none-any.whl (3.0 kB) Downloading prettytable-3.10.2-py3-none-any.whl (28 kB) Downloading PyYAML-6.0.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (705 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 705.5/705.5 kB 10.5 MB/s eta 0:00:00 Downloading rich-13.7.1-py3-none-any.whl (240 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 240.7/240.7 kB 11.2 MB/s eta 0:00:00 Downloading tabulate-0.9.0-py3-none-any.whl (35 kB) Downloading markdown_it_py-3.0.0-py3-none-any.whl (87 kB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 87.5/87.5 kB 12.3 MB/s eta 0:00:00 Downloading pygments-2.18.0-py3-none-any.whl (1.2 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.2/1.2 MB 10.7 MB/s eta 0:00:00 Downloading find_libpython-0.4.0-py3-none-any.whl (8.7 kB) Downloading six-1.16.0-py2.py3-none-any.whl (11 kB) Downloading wcwidth-0.2.13-py2.py3-none-any.whl (34 kB) Downloading mdurl-0.1.2-py3-none-any.whl (10.0 kB) Building wheels for collected packages: python-constraint Building wheel for python-constraint (pyproject.toml) ... done Created wheel for python-constraint: filename=python_constraint-1.4.0-py2.py3-none-any.whl size=24060 sha256=149868ad5ac3412203340402086bac39a91fc6814803e9d422a8911fd4dd5f2f Stored in directory: /tmp/pip-ephem-wheel-cache-zzw6x3eu/wheels/2e/f2/2b/cb08b5fe129e4f69b7033061f256e5c551b0aa1160c2872aee Successfully built python-constraint Installing collected packages: wcwidth, python-constraint, find-libpython, tabulate, six, PyYAML, pygments, PrettyTable, mdurl, cocotb, click, oyaml, markdown-it-py, cocotb-coverage, anytree, rich, caravel-cocotb Successfully installed PrettyTable-3.10.2 PyYAML-6.0.1 anytree-2.12.1 caravel-cocotb-1.2.4 click-8.1.7 cocotb-1.8.0 cocotb-coverage-1.1.0 find-libpython-0.4.0 markdown-it-py-3.0.0 mdurl-0.1.2 oyaml-1.0 pygments-2.18.0 python-constraint-1.4.0 rich-13.7.1 six-1.16.0 tabulate-0.9.0 wcwidth-0.2.13 docker pull efabless/dv:cocotb cocotb: Pulling from efabless/dv 3153aa388d02: Pull complete d5228064349b: Pull complete 46fa9e0cc8aa: Pull complete 7c4aa436b05e: Pull complete f2fb9b433d42: Pull complete d53135f02529: Pull complete 54eda94f6847: Pull complete 02eb3d638028: Pull complete 182b22a63d6c: Pull complete f3b9bf098a9f: Pull complete 8390c31b2539: Pull complete f6d666ddb25b: Pull complete 628d7834854e: Pull complete 0a5c962a11c8: Pull complete 034017c2445f: Pull complete Digest: sha256:346213d0e7504640ed830928db9b01a7b64289ab0f4a6ca3a0e2904a9175acab Status: Downloaded newer image for efabless/dv:cocotb docker.io/efabless/dv:cocotb if [ -d "/home/cass/mpw_precheck" ]; then\ echo "Deleting exisiting /home/cass/mpw_precheck" && \ rm -rf /home/cass/mpw_precheck && sleep 2;\ fi Installing Precheck.. Cloning into '/home/cass/mpw_precheck'... remote: Enumerating objects: 227, done. remote: Counting objects: 100% (227/227), done. remote: Compressing objects: 100% (172/172), done. remote: Total 227 (delta 72), reused 149 (delta 46), pack-reused 0 Receiving objects: 100% (227/227), 10.40 MiB | 3.82 MiB/s, done. Resolving deltas: 100% (72/72), done. Note: switching to '95c34d19570f50833dd8908dc735dbefd52cba88'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c <new-branch-name> Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false latest: Pulling from efabless/mpw_precheck 2d473b07cdd5: Already exists b0cc55c15c17: Pull complete 7cd893633856: Pull complete 645cb89d0537: Pull complete a88f50966349: Pull complete 56445826e92e: Pull complete 56958d6897c9: Pull complete 4f4fb700ef54: Pull complete 2cd4911ec294: Pull complete ac679679beb0: Pull complete 227c7942e2ba: Pull complete f9d722574bd0: Pull complete 6dbeca187ba1: Pull complete 47d782068167: Pull complete fffaaeeaf7be: Pull complete 7ba1af338724: Pull complete 39a5be7bb58b: Pull complete dac19c12c3f5: Pull complete 0b5f7401a836: Pull complete 89dd92422c11: Pull complete 388061b90790: Pull complete 5bea41102ad8: Pull complete Digest: sha256:d3f16302a271377efbe53ecc7457a07e7e110cb56c2baf33f24e2ff7aa144725 Status: Downloaded newer image for efabless/mpw_precheck:latest docker.io/efabless/mpw_precheck:latest
Now we are done with the setup. We are ready to run the examples from caravel user project.
What’s next?
We have done the setup of the caravel user project. It is time to run some examples from the project. Please note that you need to set the PDK to the correct directory so that we don’t have to run the set up again. This can fasten the flow. In the next lesson, we will go through the process to harden a design and integrate it into the test harness.