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ci(fpga): place gf10-sub with HeAP, not SA #861

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gHashTag merged 2 commits into from
Oct 4, 2026
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ci(fpga): place gf10-sub with HeAP, not SA #861

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5e56775
ci(fpga): search 32 seeds for gf10-sub, not 8
gHashTag Oct 4, 2026
a78f2b5
ci(fpga): place gf10-sub with HeAP instead of searching SA seeds
gHashTag Oct 4, 2026
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5 changes: 4 additions & 1 deletion .github/workflows/ax7203-gf10-sub.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,9 @@ jobs:
docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 bash -c "cd /nextpnr-xilinx && python3 xilinx/python/bbaexport.py --device xc7a200tfbg484-2 --bba /work/build/gf10_sub/chipdb/xc7a200tfbg484-2.bba && bbasm -l /work/build/gf10_sub/chipdb/xc7a200tfbg484-2.bba /work/build/gf10_sub/chipdb/xc7a200tfbg484-2.bin"
- name: nextpnr (seed search)
run: |
# --placer heap, not sa (#856). SA leaves invalid tiles on this design ("post-placement validity
# check failed for Bel 'SLICE_.../A5FF'", openXC7/nextpnr-xilinx#162) and placed 11 of seeds 1-40.
# HeAP placed 24 of 24 (seeds 1-16 on regymm/openxc7 sha256:35c91073, 1-8 on eced1cdd), 4-7 s each.
CLEAN=0; for s in 1 2 3 4 5 6 7 8; do
rm -f build/gf10_sub/gf10_sub_ax7203.fasm
docker run --rm -v "$PWD:/work" -w /work regymm/openxc7 timeout --signal=KILL 1800 nextpnr-xilinx \
Expand All @@ -45,7 +48,7 @@ jobs:
--json /work/build/gf10_sub/gf10_sub_ax7203.json \
--write /work/build/gf10_sub/gf10_sub_ax7203_routed.json \
--fasm /work/build/gf10_sub/gf10_sub_ax7203.fasm \
--freq 50.0 --seed $s --placer sa --router router1 --timing-allow-fail > /tmp/np_$s.log 2>&1 || true
--freq 50.0 --seed $s --placer heap --router router1 --timing-allow-fail > /tmp/np_$s.log 2>&1 || true
if grep -q "Failed to find a route" /tmp/np_$s.log || [ ! -f build/gf10_sub/gf10_sub_ax7203.fasm ]; then continue; fi
cp /tmp/np_$s.log /tmp/np.log; CLEAN=$s; break
done; [ "$CLEAN" = "0" ] && { echo "::error::no clean seed"; exit 1; }; echo "seed=$CLEAN"
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