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| author | David Shah <davey1576@gmail.com> | 2018-07-17 15:44:36 +0200 |
|---|---|---|
| committer | David Shah <davey1576@gmail.com> | 2018-07-17 15:44:36 +0200 |
| commit | b52269bc198eb8fcc647100d4891379b7fd7346a (patch) | |
| tree | 2b5a6319a44e6b4903be310755c4bfd4983eb0ab /ecp5/cells.cc | |
| parent | c0567c0d30e2649d4f2b6d122caf43b28e0e80ce (diff) | |
| download | nextpnr-b52269bc198eb8fcc647100d4891379b7fd7346a.tar.gz nextpnr-b52269bc198eb8fcc647100d4891379b7fd7346a.tar.bz2 nextpnr-b52269bc198eb8fcc647100d4891379b7fd7346a.zip | |
ecp5: LUT packer
Signed-off-by: David Shah <davey1576@gmail.com>
Diffstat (limited to 'ecp5/cells.cc')
| -rw-r--r-- | ecp5/cells.cc | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/ecp5/cells.cc b/ecp5/cells.cc index 4beaabd2..4a20ce80 100644 --- a/ecp5/cells.cc +++ b/ecp5/cells.cc @@ -143,7 +143,7 @@ static void replace_port_safe(bool has_ff, CellInfo *ff, IdString ff_port, CellI } } -void ff_to_lc(Context *ctx, CellInfo *ff, CellInfo *lc, int index, bool driven_by_lut) +void ff_to_slice(Context *ctx, CellInfo *ff, CellInfo *lc, int index, bool driven_by_lut) { bool has_ff = lc->ports.at(ctx->id("Q0")).net != nullptr || lc->ports.at(ctx->id("Q1")).net != nullptr; std::string reg = "REG" + std::to_string(index); @@ -165,4 +165,14 @@ void ff_to_lc(Context *ctx, CellInfo *ff, CellInfo *lc, int index, bool driven_b } } +void lut_to_slice(Context *ctx, CellInfo *lut, CellInfo *lc, int index) +{ + lc->params[ctx->id("LUT" + std::to_string(index) + "_INITVAL")] = str_or_default(lc->params, ctx->id("INIT"), "0"); + replace_port(lut, ctx->id("A"), lc, ctx->id("A" + std::to_string(index))); + replace_port(lut, ctx->id("B"), lc, ctx->id("B" + std::to_string(index))); + replace_port(lut, ctx->id("C"), lc, ctx->id("C" + std::to_string(index))); + replace_port(lut, ctx->id("D"), lc, ctx->id("D" + std::to_string(index))); + replace_port(lut, ctx->id("Z"), lc, ctx->id("F" + std::to_string(index))); +} + NEXTPNR_NAMESPACE_END |