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| author | David Shah <davey1576@gmail.com> | 2018-06-16 11:17:17 +0200 |
|---|---|---|
| committer | David Shah <davey1576@gmail.com> | 2018-06-16 14:44:10 +0200 |
| commit | c9a784ec0cca9d1d39386e1e3c3dc5ec0da9c03e (patch) | |
| tree | 47d12ab2dfc9106a5a0c74b7e1851fc7d4f201d7 | |
| parent | 04f1d7516a2001087101430c0561e31a448e0893 (diff) | |
| download | nextpnr-c9a784ec0cca9d1d39386e1e3c3dc5ec0da9c03e.tar.gz nextpnr-c9a784ec0cca9d1d39386e1e3c3dc5ec0da9c03e.tar.bz2 nextpnr-c9a784ec0cca9d1d39386e1e3c3dc5ec0da9c03e.zip | |
ice40: Include RAM init data in bitstream
Signed-off-by: David Shah <davey1576@gmail.com>
| -rw-r--r-- | ice40/bitstream.cc | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/ice40/bitstream.cc b/ice40/bitstream.cc index 0790a919..fa8e444d 100644 --- a/ice40/bitstream.cc +++ b/ice40/bitstream.cc @@ -77,6 +77,18 @@ int get_param_or_def(const CellInfo *cell, const std::string ¶m, return defval; } +std::string get_param_str_or_def(const CellInfo *cell, const std::string ¶m, + std::string defval = "") +{ + auto found = cell->params.find(param); + if (found != cell->params.end()) + return found->second; + else + return defval; +} + +char get_hexdigit(int i) { return std::string("0123456789ABCDEF").at(i); } + void write_asc(const Design &design, std::ostream &out) { const Chip &chip = design.chip; @@ -357,6 +369,34 @@ void write_asc(const Design &design, std::ostream &out) out << std::endl; } } + + // Write RAM init data + for (auto cell : design.cells) { + if (cell.second->bel != BelId()) { + if (cell.second->type == "ICESTORM_RAM") { + const BelInfoPOD &beli = ci.bel_data[cell.second->bel.index]; + int x = beli.x, y = beli.y; + out << ".ram_data " << x << " " << y << std::endl; + for (int w = 0; w < 16; w++) { + std::vector<bool> bits(256); + std::string init = get_param_str_or_def( + cell.second, + std::string("INIT_") + get_hexdigit(w)); + for (int i = 0; i < init.size(); i++) { + bool val = (init.at((init.size() - 1) - i) == '1'); + bits.at(i) = val; + } + for (int i = 0; i < bits.size(); i += 4) { + int c = bits.at(i) + (bits.at(i + 1) << 1) + + (bits.at(i + 2) << 2) + (bits.at(i + 3) << 3); + out << get_hexdigit(c); + } + out << std::endl; + } + out << std::endl; + } + } + } } NEXTPNR_NAMESPACE_END |