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| author | David Shah <dave@ds0.me> | 2020-12-02 17:07:34 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2020-12-02 17:07:34 +0000 |
| commit | 270efdca8571a58c6ec40dbe27247f6a30fb62fb (patch) | |
| tree | e452061dc9cf7f682ce7d16e0e69fb54a94ecf91 /nexus/pack.cc | |
| parent | 86e6a2225c57cf26961efa92ba82b4e59ad53fda (diff) | |
| download | nextpnr-270efdca8571a58c6ec40dbe27247f6a30fb62fb.tar.gz nextpnr-270efdca8571a58c6ec40dbe27247f6a30fb62fb.tar.bz2 nextpnr-270efdca8571a58c6ec40dbe27247f6a30fb62fb.zip | |
nexus: Add basic LRAM support (no init)
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'nexus/pack.cc')
| -rw-r--r-- | nexus/pack.cc | 57 |
1 files changed, 55 insertions, 2 deletions
diff --git a/nexus/pack.cc b/nexus/pack.cc index eb1ac560..b1642153 100644 --- a/nexus/pack.cc +++ b/nexus/pack.cc @@ -1024,8 +1024,9 @@ struct NexusPacker { // Convert primitives from their non-CORE variant to their CORE variant static const std::unordered_map<IdString, IdString> prim_map = { - {id_OSCA, id_OSC_CORE}, {id_DP16K, id_DP16K_MODE}, {id_PDP16K, id_PDP16K_MODE}, - {id_PDPSC16K, id_PDPSC16K_MODE}, {id_SP16K, id_SP16K_MODE}, {id_FIFO16K, id_FIFO16K_MODE}, + {id_OSCA, id_OSC_CORE}, {id_DP16K, id_DP16K_MODE}, {id_PDP16K, id_PDP16K_MODE}, + {id_PDPSC16K, id_PDPSC16K_MODE}, {id_SP16K, id_SP16K_MODE}, {id_FIFO16K, id_FIFO16K_MODE}, + {id_SP512K, id_SP512K_MODE}, {id_DPSC512K, id_DPSC512K_MODE}, {id_PDPSC512K, id_PDPSC512K_MODE}, {id_PLL, id_PLL_CORE}, }; @@ -1092,6 +1093,57 @@ struct NexusPacker } } + void pack_lram() + { + std::unordered_map<IdString, XFormRule> lram_rules; + lram_rules[id_SP512K_MODE].new_type = id_LRAM_CORE; + lram_rules[id_SP512K_MODE].set_params.emplace_back(id_EBR_SP_EN, std::string("ENABLE")); + lram_rules[id_SP512K_MODE].port_xform[id_CE] = id_CEA; + lram_rules[id_SP512K_MODE].port_xform[id_CS] = id_CSA; + lram_rules[id_SP512K_MODE].port_xform[id_WE] = id_WEA; + lram_rules[id_SP512K_MODE].port_xform[id_RSTOUT] = id_RSTA; + lram_rules[id_SP512K_MODE].port_xform[id_CEOUT] = id_OCEA; + add_bus_xform(lram_rules[id_SP512K_MODE], "DI", "DIA", 32); + add_bus_xform(lram_rules[id_SP512K_MODE], "DO", "DOA", 32); + add_bus_xform(lram_rules[id_SP512K_MODE], "AD", "ADA", 14); + add_bus_xform(lram_rules[id_SP512K_MODE], "BYTEEN_N", "BENA_N", 4); + + lram_rules[id_PDPSC512K_MODE].new_type = id_LRAM_CORE; + lram_rules[id_PDPSC512K_MODE].port_xform[id_CEW] = id_CEA; + lram_rules[id_PDPSC512K_MODE].port_xform[id_CSW] = id_CSA; + lram_rules[id_PDPSC512K_MODE].port_xform[id_CER] = id_CEB; + lram_rules[id_PDPSC512K_MODE].port_xform[id_CSR] = id_CSB; + lram_rules[id_PDPSC512K_MODE].port_xform[id_WE] = id_WEA; + lram_rules[id_PDPSC512K_MODE].port_xform[id_RSTR] = id_RSTB; + add_bus_xform(lram_rules[id_PDPSC512K_MODE], "DI", "DIA", 32); + add_bus_xform(lram_rules[id_PDPSC512K_MODE], "DO", "DOB", 32); + add_bus_xform(lram_rules[id_PDPSC512K_MODE], "ADW", "ADA", 14); + add_bus_xform(lram_rules[id_PDPSC512K_MODE], "ADR", "ADB", 14); + add_bus_xform(lram_rules[id_PDPSC512K_MODE], "BYTEEN_N", "BENA_N", 4); + + lram_rules[id_DPSC512K_MODE].new_type = id_LRAM_CORE; + lram_rules[id_DPSC512K_MODE].port_xform[id_CEOUTA] = id_OCEA; + lram_rules[id_DPSC512K_MODE].port_xform[id_CEOUTB] = id_OCEB; + + log_info("Packing LRAM...\n"); + generic_xform(lram_rules, true); + + for (auto cell : sorted(ctx->cells)) { + CellInfo *ci = cell.second; + if (ci->type != id_LRAM_CORE) + continue; + for (int i = 0; i < 0x80; i++) { + // FIXME: support on the prjoxide side + std::string name = stringf("INITVAL_%02X", i); + if (!ci->params.count(ctx->id(name))) + continue; + if (ci->params.at(ctx->id(name)).str.find_last_not_of("0x") == std::string::npos) + continue; + log_error("LRAM initialisation is currently unsupported (prjoxide limitation).\n"); + } + } + } + void pack_widefn() { std::vector<CellInfo *> widefns; @@ -1883,6 +1935,7 @@ struct NexusPacker pack_dsps(); convert_prims(); pack_bram(); + pack_lram(); pack_lutram(); pack_carries(); pack_widefn(); |