diff options
Diffstat (limited to 'ice40/bitstream.cc')
| -rw-r--r-- | ice40/bitstream.cc | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/ice40/bitstream.cc b/ice40/bitstream.cc index 5d138798..c32680ee 100644 --- a/ice40/bitstream.cc +++ b/ice40/bitstream.cc @@ -269,6 +269,9 @@ void write_asc(const Context *ctx, std::ostream &out) config.at(y).at(x).resize(rows, std::vector<int8_t>(cols)); } } + + std::vector<std::tuple<int, int, int>> extra_bits; + out << ".comment from next-pnr" << std::endl; switch (ctx->args.type) { @@ -513,7 +516,16 @@ void write_asc(const Context *ctx, std::ostream &out) } } } else if (cell.second->type == ctx->id("SB_GB")) { - // no cell config bits + if (cell.second->gbInfo.forPadIn) { + Loc gb_loc = ctx->getBelLocation(bel); + for (int i = 0; i < ci.num_global_networks; i++) { + if ((gb_loc.x == ci.global_network_info[i].gb_x) && (gb_loc.y == ci.global_network_info[i].gb_y)) { + extra_bits.push_back(std::make_tuple(ci.global_network_info[i].pi_eb_bank, + ci.global_network_info[i].pi_eb_x, + ci.global_network_info[i].pi_eb_y)); + } + } + } } else if (cell.second->type == ctx->id("ICESTORM_RAM")) { const BelInfoPOD &beli = ci.bel_data[bel.index]; int x = beli.x, y = beli.y; @@ -795,6 +807,10 @@ void write_asc(const Context *ctx, std::ostream &out) } } + // Write extra-bits + for (auto eb : extra_bits) + out << ".extra_bit " << std::get<0>(eb) << " " << std::get<1>(eb) << " " << std::get<2>(eb) << std::endl; + // Write symbols // const bool write_symbols = 1; for (auto wire : ctx->getWires()) { |