diff options
Diffstat (limited to 'ice40')
| -rw-r--r-- | ice40/bitstream.cc | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/ice40/bitstream.cc b/ice40/bitstream.cc index 1ee24f42..e5a045c5 100644 --- a/ice40/bitstream.cc +++ b/ice40/bitstream.cc @@ -25,6 +25,15 @@ inline TileType tile_at(const Chip &chip, int x, int y) return chip.chip_info.tile_grid[y * chip.chip_info.width + x]; } +const ConfigEntryPOD &find_config(const TileInfoPOD &tile, const std::string &name) { + for (int i = 0; i < tile.num_config_entries; i++) { + if (std::string(tile.entries[i].name) == name) { + return tile.entries[i]; + } + } + assert(false); +} + void write_asc(const Chip &chip, std::ostream &out) { // [y][x][row][col] @@ -61,6 +70,31 @@ void write_asc(const Chip &chip, std::ostream &out) default: assert(false); } + // Set pips + for (auto pip : chip.getPips()) { + if (chip.pip_to_net[pip.index] != IdString()) { + const PipInfoPOD &pi = ci.pip_data[pip.index]; + const SwitchInfoPOD &swi = bi.switches[pi.switch_index]; + for (int i = 0; i < swi.num_bits; i++) { + bool val = (pi.switch_mask & (1 << ((swi.num_bits - 1) - i))) != 0; + int8_t &cbit = config.at(swi.y).at(swi.x).at(swi.cbits[i].row).at(swi.cbits[i].col); + if (bool(cbit) != 0) + assert(false); + cbit = val; + } + } + } + // Set config bits - currently just disable RAM to stop icebox_vlog crashing + for (int y = 0; y < ci.height; y++) { + for (int x = 0; x < ci.width; x++) { + TileType tile = tile_at(chip, x, y); + if (tile == TILE_RAMB) { + auto cfg = find_config(bi.tiles_nonrouting[TILE_RAMB], "RamConfig.PowerUp"); + for (int i = 0; i < cfg.num_bits; i++) + config.at(y).at(x).at(cfg.bits[i].row).at(cfg.bits[i].col) = 1; + } + } + } // Write config out for (int y = 0; y < ci.height; y++) { for (int x = 0; x < ci.width; x++) { |