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| author | David Shah <davey1576@gmail.com> | 2018-06-13 11:08:20 +0200 |
|---|---|---|
| committer | David Shah <davey1576@gmail.com> | 2018-06-13 11:08:20 +0200 |
| commit | 94eea289ae0fb4d262276d17c474ade3ef21634b (patch) | |
| tree | 923e903f87f2d39cb4aa90867da150a0d1a64114 /ice40/cells.cc | |
| parent | a76f5c5678980c8b2e958252a68ba03676d63229 (diff) | |
| download | nextpnr-94eea289ae0fb4d262276d17c474ade3ef21634b.tar.gz nextpnr-94eea289ae0fb4d262276d17c474ade3ef21634b.tar.bz2 nextpnr-94eea289ae0fb4d262276d17c474ade3ef21634b.zip | |
Simple IO buffer insertion, enable packer by default
Signed-off-by: David Shah <davey1576@gmail.com>
Diffstat (limited to 'ice40/cells.cc')
| -rw-r--r-- | ice40/cells.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/ice40/cells.cc b/ice40/cells.cc index ad728d2c..b038db68 100644 --- a/ice40/cells.cc +++ b/ice40/cells.cc @@ -60,6 +60,26 @@ CellInfo *create_ice_cell(Design *design, IdString type, IdString name) add_port(new_cell, "LO", PORT_OUT); add_port(new_cell, "O", PORT_OUT); add_port(new_cell, "OUT", PORT_OUT); + } else if (type == "SB_IO") { + new_cell->params["PIN_TYPE"] = "0"; + new_cell->params["PULLUP"] = "0"; + new_cell->params["NEG_TRIGGER"] = "0"; + new_cell->params["IOSTANDARD"] = "SB_LVCMOS"; + + add_port(new_cell, "PACKAGE_PIN", PORT_INOUT); + + add_port(new_cell, "LATCH_INPUT_VALUE", PORT_IN); + add_port(new_cell, "CLOCK_ENABLE", PORT_IN); + add_port(new_cell, "INPUT_CLK", PORT_IN); + add_port(new_cell, "OUTPUT_CLK", PORT_IN); + + add_port(new_cell, "OUTPUT_ENABLE", PORT_IN); + add_port(new_cell, "D_OUT_0", PORT_IN); + add_port(new_cell, "D_OUT_1", PORT_IN); + + add_port(new_cell, "D_IN_0", PORT_OUT); + add_port(new_cell, "D_IN_1", PORT_OUT); + } else { log_error("unable to create iCE40 cell of type %s", type.c_str()); } @@ -128,4 +148,20 @@ void dff_to_lc(CellInfo *dff, CellInfo *lc, bool pass_thru_lut) replace_port(dff, "Q", lc, "O"); } +void nxio_to_sb(CellInfo *nxio, CellInfo *sbio) +{ + if (nxio->type == "$nextpnr_ibuf") { + sbio->params["PIN_TYPE"] = "1"; + auto pu_attr = nxio->attrs.find("PULLUP"); + if (pu_attr != nxio->attrs.end()) + sbio->params["PULLUP"] = pu_attr->second; + replace_port(nxio, "O", sbio, "D_IN_0"); + } else if (nxio->type == "$nextpnr_obuf") { + sbio->params["PIN_TYPE"] = "25"; + replace_port(nxio, "I", sbio, "D_OUT_0"); + } else { + assert(false); + } +} + NEXTPNR_NAMESPACE_END |