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| author | David Shah <dave@ds0.me> | 2020-10-12 13:40:24 +0100 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2020-11-30 08:45:27 +0000 |
| commit | df3866a80033feb2ba3cd01f14f8830e1f49cb1a (patch) | |
| tree | 4f18b496d39e5f1d8ae4f987fee30038d8a7e953 /nexus/fasm.cc | |
| parent | 518ead2e2dd11ba3bcd19085c2c91178ba9e458c (diff) | |
| download | nextpnr-df3866a80033feb2ba3cd01f14f8830e1f49cb1a.tar.gz nextpnr-df3866a80033feb2ba3cd01f14f8830e1f49cb1a.tar.bz2 nextpnr-df3866a80033feb2ba3cd01f14f8830e1f49cb1a.zip | |
nexus: Add IO packing
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'nexus/fasm.cc')
| -rw-r--r-- | nexus/fasm.cc | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/nexus/fasm.cc b/nexus/fasm.cc index 0429e83a..e9a4572f 100644 --- a/nexus/fasm.cc +++ b/nexus/fasm.cc @@ -91,6 +91,17 @@ struct NexusFasmWriter } } + void write_ioattr(const CellInfo *cell, const std::string &name, const std::string &defval = "") + { + auto fnd = cell->attrs.find(ctx->id(name)); + if (fnd == cell->attrs.end()) { + if (!defval.empty()) + write_bit(stringf("%s.%s", name.c_str(), defval.c_str())); + } else { + write_bit(stringf("%s.%s", name.c_str(), fnd->second.c_str())); + } + } + NexusFasmWriter(const Context *ctx, std::ostream &out) : ctx(ctx), out(out) {} std::string tile_name(int loc, const PhysicalTileInfoPOD &tile) { @@ -195,14 +206,16 @@ struct NexusFasmWriter push_tile(bel.tile); push_belname(bel); const NetInfo *t = get_net_or_empty(cell, id_T); + auto tmux = ctx->get_cell_pinmux(cell, id_T); bool is_input = false, is_output = false; - if (t == nullptr || t->name == ctx->id("$PACKER_VCC_NET")) { - is_input = true; - } else if (t->name == ctx->id("$PACKER_GND_NET")) { + if (tmux == PINMUX_0) { is_output = true; + } else if (tmux == PINMUX_1 || t == nullptr) { + is_input = true; } const char *iodir = is_input ? "INPUT" : (is_output ? "OUTPUT" : "BIDIR"); write_bit(stringf("BASE_TYPE.%s_%s", iodir, str_or_default(cell->attrs, id_IO_TYPE, "LVCMOS33").c_str())); + write_ioattr(cell, "PULLMODE", "NONE"); pop(2); } void write_io18(const CellInfo *cell) @@ -212,14 +225,16 @@ struct NexusFasmWriter push_belname(bel); push("SEIO18"); const NetInfo *t = get_net_or_empty(cell, id_T); + auto tmux = ctx->get_cell_pinmux(cell, id_T); bool is_input = false, is_output = false; - if (t == nullptr || t->name == ctx->id("$PACKER_VCC_NET")) { - is_input = true; - } else if (t->name == ctx->id("$PACKER_GND_NET")) { + if (tmux == PINMUX_0) { is_output = true; + } else if (tmux == PINMUX_1 || t == nullptr) { + is_input = true; } const char *iodir = is_input ? "INPUT" : (is_output ? "OUTPUT" : "BIDIR"); write_bit(stringf("BASE_TYPE.%s_%s", iodir, str_or_default(cell->attrs, id_IO_TYPE, "LVCMOS18H").c_str())); + write_ioattr(cell, "PULLMODE", "NONE"); pop(3); } void write_osc(const CellInfo *cell) |