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| author | gatecat <gatecat@ds0.me> | 2023-02-09 11:12:15 +0100 |
|---|---|---|
| committer | gatecat <gatecat@ds0.me> | 2023-02-09 11:12:15 +0100 |
| commit | a8a88d4813b63d8ec1ed93eaedc27ec2c8e14c7c (patch) | |
| tree | 18bab67409871c2aaf3103255b815c0bc4cb1b03 /ecp5 | |
| parent | a93f49eb04f4086065fd6fd8e6f777743f2509ff (diff) | |
| download | nextpnr-a8a88d4813b63d8ec1ed93eaedc27ec2c8e14c7c.tar.gz nextpnr-a8a88d4813b63d8ec1ed93eaedc27ec2c8e14c7c.tar.bz2 nextpnr-a8a88d4813b63d8ec1ed93eaedc27ec2c8e14c7c.zip | |
ecp5: Handle the case where both CE are the same constant
Signed-off-by: gatecat <gatecat@ds0.me>
Diffstat (limited to 'ecp5')
| -rw-r--r-- | ecp5/pack.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/ecp5/pack.cc b/ecp5/pack.cc index 79d1688f..23d3a1ae 100644 --- a/ecp5/pack.cc +++ b/ecp5/pack.cc @@ -1508,6 +1508,10 @@ class Ecp5Packer // Check if two nets have identical constant drivers bool equal_constant(NetInfo *a, NetInfo *b) { + if (a == nullptr && b == nullptr) + return true; + if ((a == nullptr) != (b == nullptr)) + return false; if (a->driver.cell == nullptr || b->driver.cell == nullptr) return (a->driver.cell == nullptr && b->driver.cell == nullptr); if (a->driver.cell->type != id_GND && a->driver.cell->type != id_VCC) @@ -2237,7 +2241,8 @@ class Ecp5Packer iol->params[id_CEMUX] = str_or_default(ci->params, id_CEMUX, "CE"); ci->movePortTo(id_CE, iol, id_CE); } else { - if (iol->getPort(id_CE) != ci->getPort(id_CE) || + if ((iol->getPort(id_CE) != ci->getPort(id_CE) && + !equal_constant(iol->getPort(id_CE), ci->getPort(id_CE))) || str_or_default(ci->params, id_CEMUX, "CE") != str_or_default(iol->params, id_CEMUX, "CE")) log_error("CE signal or polarity mismatch for IO flipflop %s with other IOFFs at " @@ -2303,7 +2308,8 @@ class Ecp5Packer iol->params[id_CEMUX] = str_or_default(ci->params, id_CEMUX, "CE"); ci->movePortTo(id_CE, iol, id_CE); } else { - if (iol->getPort(id_CE) != ci->getPort(id_CE) || + if ((iol->getPort(id_CE) != ci->getPort(id_CE) && + !equal_constant(iol->getPort(id_CE), ci->getPort(id_CE))) || str_or_default(ci->params, id_CEMUX, "CE") != str_or_default(iol->params, id_CEMUX, "CE")) log_error("CE signal or polarity mismatch for IO flipflop %s with other IOFFs at " |