create io cells out of asc

1 files changed, 27 insertions, 0 deletions

diff --git a/ice40/bitstream.cc b/ice40/bitstream.cc
index 5af29f30..65c90eb1 100644
--- a/ice40/bitstream.cc
+++ b/ice40/bitstream.cc
@@ -691,6 +691,26 @@ bool read_asc(Context *ctx, std::istream &in)
                     // TODO: Add port mapping to nets and assign values of properties

                 }

             }

+            if (ctx->getBelType(bel) == TYPE_SB_IO) {

+                const TileInfoPOD &ti = bi.tiles_nonrouting[TILE_IO];

+                const BelInfoPOD &beli = ci.bel_data[bel.index];

+                int x = beli.x, y = beli.y, z = beli.z;

+                bool isUsed = false;

+                for (int i = 0; i < 6; i++) {

+                    isUsed |= get_config(ti, config.at(y).at(x),

+                                         "IOB_" + std::to_string(z) + ".PINTYPE_" + std::to_string(i));

+                }

+                bool neg_trigger = get_config(ti, config.at(y).at(x), "NegClk");

+                isUsed |= neg_trigger;

+

+                if (isUsed) {

+                    std::unique_ptr<CellInfo> created = create_ice_cell(ctx, ctx->id("SB_IO"));

+                    IdString name = created->name;

+                    ctx->cells[name] = std::move(created);

+                    ctx->bindBel(bel, name, STRENGTH_WEAK);

+                    // TODO: Add port mapping to nets and assign values of properties

+                }

+            }

         }

         // Add cells that are without change in initial state of configuration

         for (auto &net : ctx->nets) {

@@ -706,6 +726,13 @@ bool read_asc(Context *ctx, std::istream &in)
                             ctx->bindBel(belpin.bel, name, STRENGTH_WEAK);

                             // TODO: Add port mapping to nets

                         }

+                        if (ctx->getBelType(belpin.bel) == TYPE_SB_IO) {

+                            std::unique_ptr<CellInfo> created = create_ice_cell(ctx, ctx->id("SB_IO"));

+                            IdString name = created->name;

+                            ctx->cells[name] = std::move(created);

+                            ctx->bindBel(belpin.bel, name, STRENGTH_WEAK);

+                            // TODO: Add port mapping to nets

+                        }

                         if (ctx->getBelType(belpin.bel) == TYPE_SB_GB) {

                             std::unique_ptr<CellInfo> created = create_ice_cell(ctx, ctx->id("SB_GB"));

                             IdString name = created->name;