공유 웨이퍼로 만드는 첫 칩: 집에서 시작하기 위해 필요한 것

# 1. Install Nix with the FOSSi binary cache (LibreLane guide, Ubuntu/Linux). Not with apt.
sudo apt-get install -y curl
curl --proto '=https' --tlsv1.2 -fsSL https://artifacts.nixos.org/nix-installer | sh -s -- install --no-confirm --extra-conf "
    extra-substituters = https://nix-cache.fossi-foundation.org
    extra-trusted-public-keys = nix-cache.fossi-foundation.org:3+K59iFwXqKsL7BNu6Guy0v+uTlwsxYQxjspXzqLYQs=
    extra-experimental-features = nix-command flakes
"
# close all terminals, then open a new one

# 2. Get the project template and enter its tool shell
git clone https://github.com/wafer-space/gf180mcu-project-template
cd gf180mcu-project-template
nix-shell
make clone-pdk            # the open_pdks gf180mcuD variant, via Ciel

# 3. Simulate the example design (a 42-bit counter in src/chip_core.sv)
make sim                  # RTL simulation, cocotb + Icarus Verilog
make sim-view             # open the waveform in GTKWave

# 4. Turn it into a layout, then look at it
make librelane            # results in librelane/runs/<timestamp>/, final views in final/
make librelane-klayout    # or: make librelane-openroad
make sim-gl               # gate-level simulation of the finished layout

#    A smaller slot, e.g. the 1.94 x 2.53 mm quarter slot:
SLOT=0p5x0p5 make librelane

# 5. Check it is fit to manufacture (separate repository, its own nix-shell and clone-pdk)
git clone https://github.com/wafer-space/gf180mcu-precheck
cd gf180mcu-precheck
nix-shell
make clone-pdk
export PDK_ROOT=gf180mcu && export PDK=gf180mcuD
python3 precheck.py --input chip_top.gds --slot 0p5x0p5 --cob   # --cob only if you ordered chip-on-board