diff --git a/.github/actions/openxc7-chipdb/action.yml b/.github/actions/openxc7-chipdb/action.yml
new file mode 100644
index 000000000..2a06441b4
--- /dev/null
+++ b/.github/actions/openxc7-chipdb/action.yml
@@ -0,0 +1,103 @@
+name: openXC7 chipdb
+description: >-
+  Restore, or build and save, the nextpnr-xilinx chipdb for one part. The cache
+  key is the part plus the ID of the image that builds it, so it hits on every
+  run that uses the same image and misses exactly when the image moves.
+  gHashTag/trinity-fpga#843.
+
+# Why the key looks like this.
+#
+# A chipdb is a pure function of the part and of the nextpnr-xilinx and
+# prjxray-db trees inside the image, so the image ID is a sufficient key.
+#
+# - A key carrying github.run_id never matches exactly. actions/cache sets
+#   cache-hit only on an exact match (a restore-keys match leaves it false), so
+#   `if: cache-hit != 'true'` rebuilt the chipdb on every run.
+# - A fixed key on a floating tag never misses, and keeps serving a chipdb built
+#   by an image the job no longer runs.
+#
+# The cached path is the same for every workflow (~/.cache/openxc7-chipdb/<part>.bin)
+# and is copied to `out` afterwards. actions/cache folds the path list into the
+# entry's version, so caching `out` directly would give each of the ~50 workflows
+# its own copy of an identical file.
+#
+# The chipdb is saved straight after it is built, not in a post-job step, so a
+# later nextpnr failure does not throw the build away.
+#
+# Caches are scoped by ref: an entry saved on main is visible to every branch and
+# PR, an entry saved in a PR only to that PR.
+
+inputs:
+  part:
+    description: Xilinx part, e.g. xc7a200tfbg484-2
+    default: xc7a200tfbg484-2
+  out:
+    description: Path of the chipdb .bin to produce, relative to the workspace
+    required: true
+  image:
+    description: The openXC7 image the job's nextpnr step runs (tag or digest)
+    default: regymm/openxc7
+
+outputs:
+  cache-hit:
+    description: "'true' when the chipdb came from the cache"
+    value: ${{ steps.restore.outputs.cache-hit }}
+  image-id:
+    description: ID of the image the chipdb belongs to
+    value: ${{ steps.ident.outputs.image-id }}
+  key:
+    description: The cache key used
+    value: ${{ steps.ident.outputs.key }}
+
+runs:
+  using: composite
+  steps:
+    - id: ident
+      shell: bash
+      env:
+        IMAGE: ${{ inputs.image }}
+        PART: ${{ inputs.part }}
+      run: |
+        # Use the image already on the runner if a previous step pulled it, so
+        # the chipdb and the job's nextpnr come from the same image.
+        present=false
+        docker image inspect "$IMAGE" >/dev/null 2>&1 && present=true
+        if [ "$present" = false ]; then docker pull -q "$IMAGE" >/dev/null; fi
+        image_id=$(docker image inspect --format '{{.Id}}' "$IMAGE")
+        key="chipdb-$PART-${image_id#sha256:}-bbasm-le-v1"
+        echo "image-id=$image_id" >> "$GITHUB_OUTPUT"
+        echo "key=$key" >> "$GITHUB_OUTPUT"
+        echo "chipdb key $key ($IMAGE)"
+
+    - id: restore
+      uses: actions/cache/restore@v4
+      with:
+        path: ~/.cache/openxc7-chipdb/${{ inputs.part }}.bin
+        key: ${{ steps.ident.outputs.key }}
+
+    - if: steps.restore.outputs.cache-hit != 'true'
+      shell: bash
+      env:
+        IMAGE_ID: ${{ steps.ident.outputs.image-id }}
+        PART: ${{ inputs.part }}
+      run: |
+        mkdir -p ~/.cache/openxc7-chipdb
+        docker run --rm -v "$HOME/.cache/openxc7-chipdb:/chipdb" "$IMAGE_ID" bash -c "cd /nextpnr-xilinx && \
+          python3 xilinx/python/bbaexport.py --device $PART --bba /chipdb/$PART.bba && \
+          bbasm -l /chipdb/$PART.bba /chipdb/$PART.bin && rm -f /chipdb/$PART.bba"
+
+    - if: steps.restore.outputs.cache-hit != 'true'
+      uses: actions/cache/save@v4
+      with:
+        path: ~/.cache/openxc7-chipdb/${{ inputs.part }}.bin
+        key: ${{ steps.ident.outputs.key }}
+
+    - shell: bash
+      env:
+        PART: ${{ inputs.part }}
+        OUT: ${{ inputs.out }}
+        HIT: ${{ steps.restore.outputs.cache-hit }}
+      run: |
+        mkdir -p "$(dirname "$OUT")"
+        cp -f "$HOME/.cache/openxc7-chipdb/$PART.bin" "$OUT"
+        echo "chipdb $OUT  $(stat -c %s "$OUT") bytes  cache-hit=${HIT:-false}"
diff --git a/.github/workflows/ax7203-blinky-bitstream.yml b/.github/workflows/ax7203-blinky-bitstream.yml
index 1d38679a0..89183ba1a 100644
--- a/.github/workflows/ax7203-blinky-bitstream.yml
+++ b/.github/workflows/ax7203-blinky-bitstream.yml
@@ -53,28 +53,11 @@ jobs:
             " 2>&1 | tee /tmp/yosys.log
           grep "Estimated number of LCs" /tmp/yosys.log
 
-      - name: Cache chipdb for xc7a200tfbg484-2
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/ax7203_blinky/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: |
-            chipdb-xc7a200tfbg484-2-regymm-openxc7-
-
-      - name: Generate chipdb for xc7a200tfbg484-2
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/ax7203_blinky/chipdb
-          docker run --rm \
-            -v "$PWD:/work" -w /work \
-            regymm/openxc7 \
-            bash -c "
-              cd /nextpnr-xilinx && \
-              python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/ax7203_blinky/chipdb/xc7a200tfbg484-2.bba && \
-              bbasm -l /work/build/ax7203_blinky/chipdb/xc7a200tfbg484-2.bba /work/build/ax7203_blinky/chipdb/xc7a200tfbg484-2.bin
-            "
-          ls -lh build/ax7203_blinky/chipdb/xc7a200tfbg484-2.bin
+          part: xc7a200tfbg484-2
+          out: build/ax7203_blinky/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr place and route
         run: |
diff --git a/.github/workflows/ax7203-corona-decode.yml b/.github/workflows/ax7203-corona-decode.yml
index 5c4e97de1..1bdeb390c 100644
--- a/.github/workflows/ax7203-corona-decode.yml
+++ b/.github/workflows/ax7203-corona-decode.yml
@@ -67,16 +67,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top ${{ steps.cell.outputs.top }};
             setundef -zero -params; write_json build/corona_decode/corona_decode_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/corona_decode/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/corona_decode/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/corona_decode/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/corona_decode/chipdb/xc7a200tfbg484-2.bba /work/build/corona_decode/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/corona_decode/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in $(seq 1 8); do
diff --git a/.github/workflows/ax7203-dual-clk-heartbeat.yml b/.github/workflows/ax7203-dual-clk-heartbeat.yml
index c256ea23a..bcc6577bb 100644
--- a/.github/workflows/ax7203-dual-clk-heartbeat.yml
+++ b/.github/workflows/ax7203-dual-clk-heartbeat.yml
@@ -43,28 +43,11 @@ jobs:
             " 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
 
-      - name: Cache chipdb for xc7a200tfbg484-2
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/ax7203_dualclk/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: |
-            chipdb-xc7a200tfbg484-2-regymm-openxc7-
-
-      - name: Generate chipdb for xc7a200tfbg484-2
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/ax7203_dualclk/chipdb
-          docker run --rm \
-            -v "$PWD:/work" -w /work \
-            regymm/openxc7 \
-            bash -c "
-              cd /nextpnr-xilinx && \
-              python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/ax7203_dualclk/chipdb/xc7a200tfbg484-2.bba && \
-              bbasm -l /work/build/ax7203_dualclk/chipdb/xc7a200tfbg484-2.bba /work/build/ax7203_dualclk/chipdb/xc7a200tfbg484-2.bin
-            "
-          ls -lh build/ax7203_dualclk/chipdb/xc7a200tfbg484-2.bin
+          part: xc7a200tfbg484-2
+          out: build/ax7203_dualclk/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr place and route (seed search for a clean $PACKER_VCC_NET route)
         run: |
diff --git a/.github/workflows/ax7203-format-cost.yml b/.github/workflows/ax7203-format-cost.yml
index 085b3c0ea..948cb7f47 100644
--- a/.github/workflows/ax7203-format-cost.yml
+++ b/.github/workflows/ax7203-format-cost.yml
@@ -83,17 +83,11 @@ jobs:
             setundef -zero -params" 2>&1 | tee /tmp/yosys_carry.log
           grep -E "Estimated|ERROR" /tmp/yosys_carry.log
           ! grep -q "ERROR" /tmp/yosys_carry.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/fmtcost/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        name: Build chipdb
-        run: |
-          mkdir -p build/fmtcost/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/fmtcost/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/fmtcost/chipdb/xc7a200tfbg484-2.bba /work/build/fmtcost/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/fmtcost/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           TOP=corona_compute_${{ matrix.cell }}_ax7203
diff --git a/.github/workflows/ax7203-gf10-add.yml b/.github/workflows/ax7203-gf10-add.yml
index b4d239c53..bc09c2fb4 100644
--- a/.github/workflows/ax7203-gf10-add.yml
+++ b/.github/workflows/ax7203-gf10-add.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf10_add_ax7203;
             setundef -zero -params; write_json build/gf10_add/gf10_add_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf10_add/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf10_add/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf10_add/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf10_add/chipdb/xc7a200tfbg484-2.bba /work/build/gf10_add/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf10_add/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf10-mul.yml b/.github/workflows/ax7203-gf10-mul.yml
index fa0b8e75d..7b3a8d6a6 100644
--- a/.github/workflows/ax7203-gf10-mul.yml
+++ b/.github/workflows/ax7203-gf10-mul.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf10_mul_ax7203;
             setundef -zero -params; write_json build/gf10_mul/gf10_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf10_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf10_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf10_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf10_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf10_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf10_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search, heap+sa — wider for the mul core)
         run: |
           CLEAN=0
diff --git a/.github/workflows/ax7203-gf10-sub.yml b/.github/workflows/ax7203-gf10-sub.yml
index 8cb8dfd2f..421a1c14d 100644
--- a/.github/workflows/ax7203-gf10-sub.yml
+++ b/.github/workflows/ax7203-gf10-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf10_sub_ax7203;
             setundef -zero -params; write_json build/gf10_sub/gf10_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf10_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf10_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf10_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf10_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf10_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf10_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf12-clean.yml b/.github/workflows/ax7203-gf12-clean.yml
index 96791df5e..fdfd10b83 100644
--- a/.github/workflows/ax7203-gf12-clean.yml
+++ b/.github/workflows/ax7203-gf12-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf12_clean_ax7203;
             setundef -zero -params; write_json build/gf12_clean/gf12_clean_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf12_clean/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf12_clean/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf12_clean/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf12_clean/chipdb/xc7a200tfbg484-2.bba /work/build/gf12_clean/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf12_clean/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in $(seq 1 8); do
diff --git a/.github/workflows/ax7203-gf12-mul-clean.yml b/.github/workflows/ax7203-gf12-mul-clean.yml
index f2cbe10b5..883a55dd0 100644
--- a/.github/workflows/ax7203-gf12-mul-clean.yml
+++ b/.github/workflows/ax7203-gf12-mul-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf12_mul_ax7203;
             setundef -zero -params; write_json build/gf12_mul/gf12_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf12_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf12_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf12_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf12_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf12_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf12_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search — placer heap + per-seed timeout, lessons from gf20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf12-sub.yml b/.github/workflows/ax7203-gf12-sub.yml
index fc6ceb949..1c715568b 100644
--- a/.github/workflows/ax7203-gf12-sub.yml
+++ b/.github/workflows/ax7203-gf12-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf12_sub_ax7203;
             setundef -zero -params; write_json build/gf12_sub/gf12_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf12_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf12_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf12_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf12_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf12_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf12_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf14-add.yml b/.github/workflows/ax7203-gf14-add.yml
index 54037e87b..47c54ae70 100644
--- a/.github/workflows/ax7203-gf14-add.yml
+++ b/.github/workflows/ax7203-gf14-add.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf14_add_ax7203;
             setundef -zero -params; write_json build/gf14_add/gf14_add_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf14_add/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf14_add/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf14_add/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf14_add/chipdb/xc7a200tfbg484-2.bba /work/build/gf14_add/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf14_add/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf14-mul.yml b/.github/workflows/ax7203-gf14-mul.yml
index 78222e334..2ae41d1b1 100644
--- a/.github/workflows/ax7203-gf14-mul.yml
+++ b/.github/workflows/ax7203-gf14-mul.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf14_mul_ax7203;
             setundef -zero -params; write_json build/gf14_mul/gf14_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf14_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf14_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf14_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf14_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf14_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf14_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search, heap+sa — wider for the mul core)
         run: |
           CLEAN=0
diff --git a/.github/workflows/ax7203-gf14-sub.yml b/.github/workflows/ax7203-gf14-sub.yml
index 8dab954f9..51926338e 100644
--- a/.github/workflows/ax7203-gf14-sub.yml
+++ b/.github/workflows/ax7203-gf14-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf14_sub_ax7203;
             setundef -zero -params; write_json build/gf14_sub/gf14_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf14_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf14_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf14_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf14_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf14_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf14_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf16-clean.yml b/.github/workflows/ax7203-gf16-clean.yml
index 4897261b1..17031faf6 100644
--- a/.github/workflows/ax7203-gf16-clean.yml
+++ b/.github/workflows/ax7203-gf16-clean.yml
@@ -31,19 +31,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf16_clean_ax7203;
             setundef -zero -params; write_json build/gf16_clean/gf16_clean_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
-      - name: Cache chipdb
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf16_clean/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-openxc7-
-      - name: Generate chipdb
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf16_clean/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "
-            cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf16_clean/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf16_clean/chipdb/xc7a200tfbg484-2.bba /work/build/gf16_clean/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf16_clean/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0
diff --git a/.github/workflows/ax7203-gf16-conformance.yml b/.github/workflows/ax7203-gf16-conformance.yml
index 9e1c3e903..c338161ad 100644
--- a/.github/workflows/ax7203-gf16-conformance.yml
+++ b/.github/workflows/ax7203-gf16-conformance.yml
@@ -64,28 +64,11 @@ jobs:
             " 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
 
-      - name: Cache chipdb for xc7a200tfbg484-2
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/ax7203_gf16/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: |
-            chipdb-xc7a200tfbg484-2-regymm-openxc7-
-
-      - name: Generate chipdb for xc7a200tfbg484-2
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/ax7203_gf16/chipdb
-          docker run --rm \
-            -v "$PWD:/work" -w /work \
-            regymm/openxc7 \
-            bash -c "
-              cd /nextpnr-xilinx && \
-              python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/ax7203_gf16/chipdb/xc7a200tfbg484-2.bba && \
-              bbasm -l /work/build/ax7203_gf16/chipdb/xc7a200tfbg484-2.bba /work/build/ax7203_gf16/chipdb/xc7a200tfbg484-2.bin
-            "
-          ls -lh build/ax7203_gf16/chipdb/xc7a200tfbg484-2.bin
+          part: xc7a200tfbg484-2
+          out: build/ax7203_gf16/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr place and route (seed search for a clean $PACKER_VCC_NET route)
         run: |
diff --git a/.github/workflows/ax7203-gf16-mul-clean.yml b/.github/workflows/ax7203-gf16-mul-clean.yml
index 57f7733f3..6f6b34d18 100644
--- a/.github/workflows/ax7203-gf16-mul-clean.yml
+++ b/.github/workflows/ax7203-gf16-mul-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf16_mul_ax7203;
             setundef -zero -params; write_json build/gf16_mul/gf16_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf16_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf16_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf16_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf16_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf16_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf16_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search — placer heap + per-seed timeout, lessons from gf20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf16-sub.yml b/.github/workflows/ax7203-gf16-sub.yml
index 8f83a6ca5..061d6621e 100644
--- a/.github/workflows/ax7203-gf16-sub.yml
+++ b/.github/workflows/ax7203-gf16-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf16_sub_ax7203;
             setundef -zero -params; write_json build/gf16_sub/gf16_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf16_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf16_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf16_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf16_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf16_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf16_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf20-clean.yml b/.github/workflows/ax7203-gf20-clean.yml
index 6ed7cb1ff..220d2c6ae 100644
--- a/.github/workflows/ax7203-gf20-clean.yml
+++ b/.github/workflows/ax7203-gf20-clean.yml
@@ -31,19 +31,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf20_clean_ax7203;
             setundef -zero -params; write_json build/gf20_clean/gf20_clean_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
-      - name: Cache chipdb
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf20_clean/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-openxc7-
-      - name: Generate chipdb
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf20_clean/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "
-            cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf20_clean/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf20_clean/chipdb/xc7a200tfbg484-2.bba /work/build/gf20_clean/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf20_clean/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0
diff --git a/.github/workflows/ax7203-gf20-mul-clean.yml b/.github/workflows/ax7203-gf20-mul-clean.yml
index 58c845437..1b016c2c5 100644
--- a/.github/workflows/ax7203-gf20-mul-clean.yml
+++ b/.github/workflows/ax7203-gf20-mul-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf20_mul_ax7203;
             setundef -zero -params; write_json build/gf20_mul/gf20_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf20_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf20_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf20_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf20_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf20_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf20_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search — placer heap + per-seed timeout, lessons from gf20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf20-sub.yml b/.github/workflows/ax7203-gf20-sub.yml
index b828e4a7f..bec340bda 100644
--- a/.github/workflows/ax7203-gf20-sub.yml
+++ b/.github/workflows/ax7203-gf20-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf20_sub_ax7203;
             setundef -zero -params; write_json build/gf20_sub/gf20_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf20_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf20_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf20_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf20_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf20_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf20_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf24-clean.yml b/.github/workflows/ax7203-gf24-clean.yml
index 010c039f6..9d7dc3305 100644
--- a/.github/workflows/ax7203-gf24-clean.yml
+++ b/.github/workflows/ax7203-gf24-clean.yml
@@ -31,19 +31,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf24_clean_ax7203;
             setundef -zero -params; write_json build/gf24_clean/gf24_clean_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
-      - name: Cache chipdb
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf24_clean/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-openxc7-
-      - name: Generate chipdb
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf24_clean/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "
-            cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf24_clean/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf24_clean/chipdb/xc7a200tfbg484-2.bba /work/build/gf24_clean/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf24_clean/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0
diff --git a/.github/workflows/ax7203-gf24-mul-clean.yml b/.github/workflows/ax7203-gf24-mul-clean.yml
index 631c4ce52..faadca4db 100644
--- a/.github/workflows/ax7203-gf24-mul-clean.yml
+++ b/.github/workflows/ax7203-gf24-mul-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf24_mul_ax7203;
             setundef -zero -params; write_json build/gf24_mul/gf24_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf24_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf24_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf24_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf24_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf24_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf24_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search — placer heap + per-seed timeout, lessons from gf20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf24-sub.yml b/.github/workflows/ax7203-gf24-sub.yml
index dbf617cfe..08badd4ee 100644
--- a/.github/workflows/ax7203-gf24-sub.yml
+++ b/.github/workflows/ax7203-gf24-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf24_sub_ax7203;
             setundef -zero -params; write_json build/gf24_sub/gf24_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf24_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf24_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf24_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf24_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf24_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf24_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf32-add.yml b/.github/workflows/ax7203-gf32-add.yml
index d1d3c77a3..c655d6df1 100644
--- a/.github/workflows/ax7203-gf32-add.yml
+++ b/.github/workflows/ax7203-gf32-add.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf32_add_ax7203;
             setundef -zero -params; write_json build/gf32_add/gf32_add_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf32_add/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf32_add/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf32_add/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf32_add/chipdb/xc7a200tfbg484-2.bba /work/build/gf32_add/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf32_add/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search, heap placer)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf32-mul.yml b/.github/workflows/ax7203-gf32-mul.yml
index 286e7e90c..a9c24afcb 100644
--- a/.github/workflows/ax7203-gf32-mul.yml
+++ b/.github/workflows/ax7203-gf32-mul.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf32_mul_ax7203;
             setundef -zero -params; write_json build/gf32_mul/gf32_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf32_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf32_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf32_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf32_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf32_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf32_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search, heap+sa placers — GF32 mul is the largest core, needs more attempts)
         run: |
           CLEAN=0
diff --git a/.github/workflows/ax7203-gf32-sub.yml b/.github/workflows/ax7203-gf32-sub.yml
index 1ae1e7ab2..1b7179e5a 100644
--- a/.github/workflows/ax7203-gf32-sub.yml
+++ b/.github/workflows/ax7203-gf32-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf32_sub_ax7203;
             setundef -zero -params; write_json build/gf32_sub/gf32_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf32_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf32_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf32_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf32_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf32_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf32_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search, heap placer — GF32 widest, sa mis-places wide formats like GF20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf4-clean.yml b/.github/workflows/ax7203-gf4-clean.yml
index a7a084808..eb2e7bd95 100644
--- a/.github/workflows/ax7203-gf4-clean.yml
+++ b/.github/workflows/ax7203-gf4-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf4_clean_ax7203;
             setundef -zero -params; write_json build/gf4_clean/gf4_clean_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf4_clean/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf4_clean/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf4_clean/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf4_clean/chipdb/xc7a200tfbg484-2.bba /work/build/gf4_clean/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf4_clean/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do
diff --git a/.github/workflows/ax7203-gf4-mul-clean.yml b/.github/workflows/ax7203-gf4-mul-clean.yml
index 87fd2e4c0..3f7d67616 100644
--- a/.github/workflows/ax7203-gf4-mul-clean.yml
+++ b/.github/workflows/ax7203-gf4-mul-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf4_mul_ax7203;
             setundef -zero -params; write_json build/gf4_mul/gf4_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf4_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf4_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf4_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf4_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf4_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf4_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search — placer heap + per-seed timeout, lessons from gf20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf4-sub.yml b/.github/workflows/ax7203-gf4-sub.yml
index 8030fd6b9..b82720631 100644
--- a/.github/workflows/ax7203-gf4-sub.yml
+++ b/.github/workflows/ax7203-gf4-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf4_sub_ax7203;
             setundef -zero -params; write_json build/gf4_sub/gf4_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf4_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf4_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf4_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf4_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf4_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf4_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf6-clean.yml b/.github/workflows/ax7203-gf6-clean.yml
index 2c8550a5f..f141cfb55 100644
--- a/.github/workflows/ax7203-gf6-clean.yml
+++ b/.github/workflows/ax7203-gf6-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf6_clean_ax7203;
             setundef -zero -params; write_json build/gf6_clean/gf6_clean_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf6_clean/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf6_clean/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf6_clean/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf6_clean/chipdb/xc7a200tfbg484-2.bba /work/build/gf6_clean/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf6_clean/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf6-mul-clean.yml b/.github/workflows/ax7203-gf6-mul-clean.yml
index 9c8445b9a..8902b1846 100644
--- a/.github/workflows/ax7203-gf6-mul-clean.yml
+++ b/.github/workflows/ax7203-gf6-mul-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf6_mul_ax7203;
             setundef -zero -params; write_json build/gf6_mul/gf6_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf6_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf6_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf6_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf6_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf6_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf6_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search — placer heap + per-seed timeout, lessons from gf20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf6-sub.yml b/.github/workflows/ax7203-gf6-sub.yml
index 0bf57e088..9d123cc68 100644
--- a/.github/workflows/ax7203-gf6-sub.yml
+++ b/.github/workflows/ax7203-gf6-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf6_sub_ax7203;
             setundef -zero -params; write_json build/gf6_sub/gf6_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf6_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf6_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf6_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf6_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf6_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf6_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf8-clean.yml b/.github/workflows/ax7203-gf8-clean.yml
index f51923e21..8bfc0e988 100644
--- a/.github/workflows/ax7203-gf8-clean.yml
+++ b/.github/workflows/ax7203-gf8-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf8_clean_ax7203;
             setundef -zero -params; write_json build/gf8_clean/gf8_clean_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf8_clean/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf8_clean/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf8_clean/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf8_clean/chipdb/xc7a200tfbg484-2.bba /work/build/gf8_clean/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf8_clean/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf8-mul-clean.yml b/.github/workflows/ax7203-gf8-mul-clean.yml
index 50c37fec9..48330a043 100644
--- a/.github/workflows/ax7203-gf8-mul-clean.yml
+++ b/.github/workflows/ax7203-gf8-mul-clean.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top gf8_mul_ax7203;
             setundef -zero -params; write_json build/gf8_mul/gf8_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf8_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf8_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf8_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf8_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gf8_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf8_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search — placer heap + per-seed timeout, lessons from gf20)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gf8-sub.yml b/.github/workflows/ax7203-gf8-sub.yml
index 8b3d3f02c..776a459ac 100644
--- a/.github/workflows/ax7203-gf8-sub.yml
+++ b/.github/workflows/ax7203-gf8-sub.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top gf8_sub_ax7203;
             setundef -zero -params; write_json build/gf8_sub/gf8_sub_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gf8_sub/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gf8_sub/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf8_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf8_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf8_sub/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gf8_sub/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
diff --git a/.github/workflows/ax7203-gfternary-mul.yml b/.github/workflows/ax7203-gfternary-mul.yml
index b076fc05f..7fd817493 100644
--- a/.github/workflows/ax7203-gfternary-mul.yml
+++ b/.github/workflows/ax7203-gfternary-mul.yml
@@ -39,16 +39,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -nodsp -arch xc7 -top corona_compute_gfternary_mul_ax7203;
             setundef -zero -params; write_json build/gfternary_mul/gfternary_mul_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/gfternary_mul/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/gfternary_mul/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gfternary_mul/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gfternary_mul/chipdb/xc7a200tfbg484-2.bba /work/build/gfternary_mul/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/gfternary_mul/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (heap + sa seed search)
         run: |
           CLEAN="";
diff --git a/.github/workflows/ax7203-identity-echo.yml b/.github/workflows/ax7203-identity-echo.yml
index 77cf76951..4bc3026d5 100644
--- a/.github/workflows/ax7203-identity-echo.yml
+++ b/.github/workflows/ax7203-identity-echo.yml
@@ -25,16 +25,11 @@ jobs:
             synth_xilinx -flatten -abc9 -nocarry -arch xc7 -top identity_echo_ax7203;
             setundef -zero -params; write_json build/identity_echo/identity_echo_ax7203.json" 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated|ERROR" /tmp/yosys.log
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/identity_echo/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/identity_echo/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/identity_echo/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/identity_echo/chipdb/xc7a200tfbg484-2.bba /work/build/identity_echo/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/identity_echo/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (seed search)
         run: |
           CLEAN=0; for s in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do
diff --git a/.github/workflows/ax7203-led-onehot.yml b/.github/workflows/ax7203-led-onehot.yml
index 2877edbc1..155523679 100644
--- a/.github/workflows/ax7203-led-onehot.yml
+++ b/.github/workflows/ax7203-led-onehot.yml
@@ -12,6 +12,13 @@ on:
       - 'fpga/vivado/led_onehot_ax7203.v'
       - 'specs/fpga/constraints/led_onehot_ax7203.xdc'
       - '.github/workflows/ax7203-led-onehot.yml'
+      - '.github/actions/openxc7-chipdb/**'
+  # The one build that runs when the shared chipdb action changes. None of the
+  # other workflows that call it watch .github/actions/, so without this an
+  # action-only change would reach main without a single run behind it.
+  pull_request:
+    paths:
+      - '.github/actions/openxc7-chipdb/**'
 
 jobs:
   bitstream:
@@ -43,28 +50,11 @@ jobs:
             " 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
 
-      - name: Cache chipdb for xc7a200tfbg484-2
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/ax7203_onehot/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: |
-            chipdb-xc7a200tfbg484-2-regymm-openxc7-
-
-      - name: Generate chipdb for xc7a200tfbg484-2
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/ax7203_onehot/chipdb
-          docker run --rm \
-            -v "$PWD:/work" -w /work \
-            regymm/openxc7 \
-            bash -c "
-              cd /nextpnr-xilinx && \
-              python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/ax7203_onehot/chipdb/xc7a200tfbg484-2.bba && \
-              bbasm -l /work/build/ax7203_onehot/chipdb/xc7a200tfbg484-2.bba /work/build/ax7203_onehot/chipdb/xc7a200tfbg484-2.bin
-            "
-          ls -lh build/ax7203_onehot/chipdb/xc7a200tfbg484-2.bin
+          part: xc7a200tfbg484-2
+          out: build/ax7203_onehot/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr place and route
         run: |
diff --git a/.github/workflows/ax7203-rx-echo-hb.yml b/.github/workflows/ax7203-rx-echo-hb.yml
index 173f6a093..4e1961d6e 100644
--- a/.github/workflows/ax7203-rx-echo-hb.yml
+++ b/.github/workflows/ax7203-rx-echo-hb.yml
@@ -41,28 +41,11 @@ jobs:
             " 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
 
-      - name: Cache chipdb for xc7a200tfbg484-2
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/ax7203_rx_echo/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: |
-            chipdb-xc7a200tfbg484-2-regymm-openxc7-
-
-      - name: Generate chipdb for xc7a200tfbg484-2
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/ax7203_rx_echo/chipdb
-          docker run --rm \
-            -v "$PWD:/work" -w /work \
-            regymm/openxc7 \
-            bash -c "
-              cd /nextpnr-xilinx && \
-              python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/ax7203_rx_echo/chipdb/xc7a200tfbg484-2.bba && \
-              bbasm -l /work/build/ax7203_rx_echo/chipdb/xc7a200tfbg484-2.bba /work/build/ax7203_rx_echo/chipdb/xc7a200tfbg484-2.bin
-            "
-          ls -lh build/ax7203_rx_echo/chipdb/xc7a200tfbg484-2.bin
+          part: xc7a200tfbg484-2
+          out: build/ax7203_rx_echo/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr place and route (seed search for a clean $PACKER_VCC_NET route)
         run: |
diff --git a/.github/workflows/ax7203-trinet-baud.yml b/.github/workflows/ax7203-trinet-baud.yml
index 626677a41..e495fe104 100644
--- a/.github/workflows/ax7203-trinet-baud.yml
+++ b/.github/workflows/ax7203-trinet-baud.yml
@@ -62,17 +62,11 @@ jobs:
             echo "::error::DSP48 cells inferred"; exit 1
           fi
 
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}-${{ matrix.name }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/${{ matrix.name }}/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bba /work/build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr (heap + sa seed search)
         run: |
diff --git a/.github/workflows/ax7203-trinet-dna-probe.yml b/.github/workflows/ax7203-trinet-dna-probe.yml
index 21d905d7c..4ce7e3d6f 100644
--- a/.github/workflows/ax7203-trinet-dna-probe.yml
+++ b/.github/workflows/ax7203-trinet-dna-probe.yml
@@ -49,16 +49,11 @@ jobs:
             exit 1
           fi
           echo "zero-multiplier discipline: no DSP48 cells inferred"
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/trinet_dna_probe/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/trinet_dna_probe/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/trinet_dna_probe/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/trinet_dna_probe/chipdb/xc7a200tfbg484-2.bba /work/build/trinet_dna_probe/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/trinet_dna_probe/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (heap + sa seed search — the recipe large datapaths need)
         run: |
           CLEAN="";
diff --git a/.github/workflows/ax7203-trinet-fleet.yml b/.github/workflows/ax7203-trinet-fleet.yml
index 86b6dcf65..37a1ef19e 100644
--- a/.github/workflows/ax7203-trinet-fleet.yml
+++ b/.github/workflows/ax7203-trinet-fleet.yml
@@ -99,17 +99,11 @@ jobs:
             echo "::error::DSP48 cells inferred"; exit 1
           fi
 
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}-${{ matrix.name }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/${{ matrix.name }}/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bba /work/build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/${{ matrix.name }}/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr (heap + sa seed search)
         run: |
diff --git a/.github/workflows/ax7203-trinet-mac32.yml b/.github/workflows/ax7203-trinet-mac32.yml
index 22c2334dc..87fafffbd 100644
--- a/.github/workflows/ax7203-trinet-mac32.yml
+++ b/.github/workflows/ax7203-trinet-mac32.yml
@@ -55,16 +55,11 @@ jobs:
             exit 1
           fi
           echo "zero-multiplier discipline: no DSP48 cells inferred"
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/trinet_mac32/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/trinet_mac32/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/trinet_mac32/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/trinet_mac32/chipdb/xc7a200tfbg484-2.bba /work/build/trinet_mac32/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/trinet_mac32/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (heap + sa seed search — the recipe large datapaths need)
         run: |
           CLEAN="";
diff --git a/.github/workflows/ax7203-trinet-node-v2.yml b/.github/workflows/ax7203-trinet-node-v2.yml
index a8259ba79..02be1bb03 100644
--- a/.github/workflows/ax7203-trinet-node-v2.yml
+++ b/.github/workflows/ax7203-trinet-node-v2.yml
@@ -62,16 +62,11 @@ jobs:
             exit 1
           fi
           echo "zero-multiplier discipline: no DSP48 cells inferred"
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/trinet_node_v2/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/trinet_node_v2/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/trinet_node_v2/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/trinet_node_v2/chipdb/xc7a200tfbg484-2.bba /work/build/trinet_node_v2/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/trinet_node_v2/chipdb/xc7a200tfbg484-2.bin
       - name: nextpnr (heap + sa seed search — the recipe large datapaths need)
         run: |
           CLEAN="";
diff --git a/.github/workflows/ax7203-uart-loopback.yml b/.github/workflows/ax7203-uart-loopback.yml
index 13c21a13f..11a0df4c4 100644
--- a/.github/workflows/ax7203-uart-loopback.yml
+++ b/.github/workflows/ax7203-uart-loopback.yml
@@ -43,28 +43,11 @@ jobs:
             " 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
 
-      - name: Cache chipdb for xc7a200tfbg484-2
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/ax7203_loopback/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: |
-            chipdb-xc7a200tfbg484-2-regymm-openxc7-
-
-      - name: Generate chipdb for xc7a200tfbg484-2
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/ax7203_loopback/chipdb
-          docker run --rm \
-            -v "$PWD:/work" -w /work \
-            regymm/openxc7 \
-            bash -c "
-              cd /nextpnr-xilinx && \
-              python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/ax7203_loopback/chipdb/xc7a200tfbg484-2.bba && \
-              bbasm -l /work/build/ax7203_loopback/chipdb/xc7a200tfbg484-2.bba /work/build/ax7203_loopback/chipdb/xc7a200tfbg484-2.bin
-            "
-          ls -lh build/ax7203_loopback/chipdb/xc7a200tfbg484-2.bin
+          part: xc7a200tfbg484-2
+          out: build/ax7203_loopback/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr place and route (seed search for a clean $PACKER_VCC_NET route)
         run: |
diff --git a/.github/workflows/ax7203-uart-tx-probe.yml b/.github/workflows/ax7203-uart-tx-probe.yml
index 28bd81770..bc4671532 100644
--- a/.github/workflows/ax7203-uart-tx-probe.yml
+++ b/.github/workflows/ax7203-uart-tx-probe.yml
@@ -42,28 +42,11 @@ jobs:
             " 2>&1 | tee /tmp/yosys.log
           grep -E "Estimated number of LCs|ERROR" /tmp/yosys.log
 
-      - name: Cache chipdb for xc7a200tfbg484-2
-        id: chipdb-cache
-        uses: actions/cache@v4
+      - id: chipdb-cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/ax7203_uart_tx/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-openxc7-${{ github.run_id }}
-          restore-keys: |
-            chipdb-xc7a200tfbg484-2-regymm-openxc7-
-
-      - name: Generate chipdb for xc7a200tfbg484-2
-        if: steps.chipdb-cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p build/ax7203_uart_tx/chipdb
-          docker run --rm \
-            -v "$PWD:/work" -w /work \
-            regymm/openxc7 \
-            bash -c "
-              cd /nextpnr-xilinx && \
-              python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/ax7203_uart_tx/chipdb/xc7a200tfbg484-2.bba && \
-              bbasm -l /work/build/ax7203_uart_tx/chipdb/xc7a200tfbg484-2.bba /work/build/ax7203_uart_tx/chipdb/xc7a200tfbg484-2.bin
-            "
-          ls -lh build/ax7203_uart_tx/chipdb/xc7a200tfbg484-2.bin
+          part: xc7a200tfbg484-2
+          out: build/ax7203_uart_tx/chipdb/xc7a200tfbg484-2.bin
 
       - name: nextpnr place and route (seed search for a clean $PACKER_VCC_NET route)
         run: |
diff --git a/.github/workflows/build-ax7203-bitstream-mul.yml b/.github/workflows/build-ax7203-bitstream-mul.yml
index d4e1add57..e97f91c1b 100644
--- a/.github/workflows/build-ax7203-bitstream-mul.yml
+++ b/.github/workflows/build-ax7203-bitstream-mul.yml
@@ -14,19 +14,12 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Generate chipdb cache
-        id: chipdb
-        uses: actions/cache@v4
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: chipdb-xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-v2
-      - name: Build chipdb (if not cached)
-        if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          docker run --rm -v "$(pwd):/github" regymm/openxc7:latest bash -c '
-          cd /nextpnr-xilinx/xilinx &&
-          python3 python/bbaexport.py --xray /nextpnr-xilinx/xilinx/external/prjxray-db/artix7 --metadata /nextpnr-xilinx/xilinx/external/nextpnr-xilinx-meta/artix7 --device xc7a200tfbg484-2 --constids /nextpnr-xilinx/xilinx/constids.inc --bba /tmp/chipdb.bba &&
-          bbasm --le /tmp/chipdb.bba /github/chipdb-xc7a200tfbg484-2.bin'
+          part: xc7a200tfbg484-2
+          out: chipdb-xc7a200tfbg484-2.bin
+          image: regymm/openxc7:latest
       - name: Build bitstream
         run: |
           DESIGN="${{ github.event.inputs.design }}"
diff --git a/.github/workflows/build-ax7203-bitstream.yml b/.github/workflows/build-ax7203-bitstream.yml
index 0105e9495..9173a09c8 100644
--- a/.github/workflows/build-ax7203-bitstream.yml
+++ b/.github/workflows/build-ax7203-bitstream.yml
@@ -15,25 +15,12 @@ jobs:
         with:
           submodules: true
 
-      - name: Generate chipdb cache
-        id: chipdb
-        uses: actions/cache@v4
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: chipdb-xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-v2
-
-      - name: Build chipdb (if not cached)
-        if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          docker run --rm -v "$(pwd):/github" regymm/openxc7:latest bash -c '
-          cd /nextpnr-xilinx/xilinx &&
-          python3 python/bbaexport.py \
-            --xray /nextpnr-xilinx/xilinx/external/prjxray-db/artix7 \
-            --metadata /nextpnr-xilinx/xilinx/external/nextpnr-xilinx-meta/artix7 \
-            --device xc7a200tfbg484-2 \
-            --constids /nextpnr-xilinx/xilinx/constids.inc \
-            --bba /tmp/chipdb.bba &&
-          bbasm --le /tmp/chipdb.bba /github/chipdb-xc7a200tfbg484-2.bin'
+          part: xc7a200tfbg484-2
+          out: chipdb-xc7a200tfbg484-2.bin
+          image: regymm/openxc7:latest
 
       - name: Full bitstream build
         run: |
diff --git a/.github/workflows/build-ax7203-routing-test.yml b/.github/workflows/build-ax7203-routing-test.yml
index 537b9adf1..4ccd2c741 100644
--- a/.github/workflows/build-ax7203-routing-test.yml
+++ b/.github/workflows/build-ax7203-routing-test.yml
@@ -21,19 +21,12 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with: { submodules: true }
-      - name: Chipdb cache
-        id: chipdb
-        uses: actions/cache@v4
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: chipdb-xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-v2
-      - name: Build chipdb
-        if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          docker run --rm -v "$(pwd):/github" regymm/openxc7:latest bash -c '
-          cd /nextpnr-xilinx/xilinx &&
-          python3 python/bbaexport.py --xray /nextpnr-xilinx/xilinx/external/prjxray-db/artix7 --metadata /nextpnr-xilinx/xilinx/external/nextpnr-xilinx-meta/artix7 --device xc7a200tfbg484-2 --constids /nextpnr-xilinx/xilinx/constids.inc --bba /tmp/chipdb.bba &&
-          bbasm --le /tmp/chipdb.bba /github/chipdb-xc7a200tfbg484-2.bin'
+          part: xc7a200tfbg484-2
+          out: chipdb-xc7a200tfbg484-2.bin
+          image: regymm/openxc7:latest
       - name: Build with custom options
         run: |
           DESIGN="${{ github.event.inputs.design }}"
diff --git a/.github/workflows/build-matrix.yml b/.github/workflows/build-matrix.yml
index 2d7e2e509..7e84224f4 100644
--- a/.github/workflows/build-matrix.yml
+++ b/.github/workflows/build-matrix.yml
@@ -52,25 +52,12 @@ jobs:
         with:
           submodules: true
 
-      - name: Generate chipdb cache
-        id: chipdb
-        uses: actions/cache@v4
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: chipdb-xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-v2
-
-      - name: Build chipdb (if not cached)
-        if: steps.chipdb.outputs.cache-hit != 'true'
-        run: |
-          docker run --rm -v "$(pwd):/github" regymm/openxc7:latest bash -c '
-          cd /nextpnr-xilinx/xilinx &&
-          python3 python/bbaexport.py \
-            --xray /nextpnr-xilinx/xilinx/external/prjxray-db/artix7 \
-            --metadata /nextpnr-xilinx/xilinx/external/nextpnr-xilinx-meta/artix7 \
-            --device xc7a200tfbg484-2 \
-            --constids /nextpnr-xilinx/xilinx/constids.inc \
-            --bba /tmp/chipdb.bba &&
-          bbasm --le /tmp/chipdb.bba /github/chipdb-xc7a200tfbg484-2.bin'
+          part: xc7a200tfbg484-2
+          out: chipdb-xc7a200tfbg484-2.bin
+          image: regymm/openxc7:latest
 
       - name: Full bitstream build
         run: |
diff --git a/.github/workflows/openxc7-build-timing.yml b/.github/workflows/openxc7-build-timing.yml
index 34d695e2d..9e9be3133 100644
--- a/.github/workflows/openxc7-build-timing.yml
+++ b/.github/workflows/openxc7-build-timing.yml
@@ -55,22 +55,11 @@ jobs:
           done
           docker image inspect regymm/openxc7:latest >/dev/null
 
-      - name: Cache chipdb
-        id: cache
-        uses: actions/cache@v4
+      - id: cache
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-v1
-
-      - name: Generate chipdb
-        if: steps.cache.outputs.cache-hit != 'true'
-        run: |
-          mkdir -p chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "
-            cd /nextpnr-xilinx &&
-            python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/chipdb/xc7a200tfbg484-2.bba &&
-            bbasm -l /work/chipdb/xc7a200tfbg484-2.bba /work/chipdb/xc7a200tfbg484-2.bin
-          "
+          part: xc7a200tfbg484-2
+          out: chipdb/xc7a200tfbg484-2.bin
 
       - name: Upload chipdb
         uses: actions/upload-artifact@v4
diff --git a/.github/workflows/run-syntax-gate.yml b/.github/workflows/run-syntax-gate.yml
index 59b47d736..6e40e08e2 100644
--- a/.github/workflows/run-syntax-gate.yml
+++ b/.github/workflows/run-syntax-gate.yml
@@ -10,11 +10,13 @@ on:
     branches: [main]
     paths:
       - '.github/workflows/**'
+      - '.github/actions/**'
       - 'tools/check_run_syntax.py'
       - 'tools/test_check_run_syntax.py'
   pull_request:
     paths:
       - '.github/workflows/**'
+      - '.github/actions/**'
       - 'tools/check_run_syntax.py'
       - 'tools/test_check_run_syntax.py'
   workflow_dispatch:
diff --git a/.github/workflows/tnf-cost-sweep.yml b/.github/workflows/tnf-cost-sweep.yml
index 278c96c85..e7578b3bd 100644
--- a/.github/workflows/tnf-cost-sweep.yml
+++ b/.github/workflows/tnf-cost-sweep.yml
@@ -145,17 +145,12 @@ jobs:
       - name: Docker pull
         run: |
           for i in 1 2 3 4 5 6; do docker pull regymm/openxc7@sha256:eced1cdd4727549f2d983328e0cf170fb6f6f67d87f19b2bf24365163368c70c && break; sleep $((i*20)); done
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/tnfcost/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        name: Build chipdb
-        run: |
-          mkdir -p build/tnfcost/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7@sha256:eced1cdd4727549f2d983328e0cf170fb6f6f67d87f19b2bf24365163368c70c bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/tnfcost/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/tnfcost/chipdb/xc7a200tfbg484-2.bba /work/build/tnfcost/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/tnfcost/chipdb/xc7a200tfbg484-2.bin
+          image: regymm/openxc7@sha256:eced1cdd4727549f2d983328e0cf170fb6f6f67d87f19b2bf24365163368c70c
       - name: Place and route the Q1/Q2 arms
         run: |
           ARMS="${{ github.event.inputs.pnr_arms }}"
diff --git a/.github/workflows/tnf-format-throughput.yml b/.github/workflows/tnf-format-throughput.yml
index f208444ac..25388d03e 100644
--- a/.github/workflows/tnf-format-throughput.yml
+++ b/.github/workflows/tnf-format-throughput.yml
@@ -90,17 +90,12 @@ jobs:
       - name: Docker pull
         run: |
           for i in 1 2 3 4 5 6; do docker pull regymm/openxc7@sha256:eced1cdd4727549f2d983328e0cf170fb6f6f67d87f19b2bf24365163368c70c && break; sleep $((i*20)); done
-      - uses: actions/cache@v4
-        id: chipdb
+      - id: chipdb
+        uses: ./.github/actions/openxc7-chipdb
         with:
-          path: build/tnet/chipdb/xc7a200tfbg484-2.bin
-          key: chipdb-xc7a200tfbg484-2-regymm-${{ github.run_id }}
-          restore-keys: chipdb-xc7a200tfbg484-2-regymm-
-      - if: steps.chipdb.outputs.cache-hit != 'true'
-        name: Build chipdb
-        run: |
-          mkdir -p build/tnet/chipdb
-          docker run --rm -v "$PWD:/work" -w /work regymm/openxc7@sha256:eced1cdd4727549f2d983328e0cf170fb6f6f67d87f19b2bf24365163368c70c bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/tnet/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/tnet/chipdb/xc7a200tfbg484-2.bba /work/build/tnet/chipdb/xc7a200tfbg484-2.bin"
+          part: xc7a200tfbg484-2
+          out: build/tnet/chipdb/xc7a200tfbg484-2.bin
+          image: regymm/openxc7@sha256:eced1cdd4727549f2d983328e0cf170fb6f6f67d87f19b2bf24365163368c70c
       - name: Place and route the arms
         run: |
           ARMS="${{ github.event.inputs.pnr_arms }}"