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| author | Icenowy Zheng <icenowy@aosc.io> | 2018-12-18 15:37:43 +0800 |
|---|---|---|
| committer | Icenowy Zheng <icenowy@aosc.io> | 2018-12-18 15:37:43 +0800 |
| commit | fec8b3c81ffcf1f8a27e79250c05b6ea91571bbe (patch) | |
| tree | 8a1f7af4638ae16e8812dfe93b8935ebc264ba7f | |
| parent | 847fd360773d72933f1c728dba0755e0033350a6 (diff) | |
| download | yosys-fec8b3c81ffcf1f8a27e79250c05b6ea91571bbe.tar.gz yosys-fec8b3c81ffcf1f8a27e79250c05b6ea91571bbe.tar.bz2 yosys-fec8b3c81ffcf1f8a27e79250c05b6ea91571bbe.zip | |
Add "dffinit -strinit high low"
On some platforms the string to initialize DFF might not be "high" and
"low", e.g. with Anlogic TD it's "SET" and "RESET".
Add a "-strinit" parameter for dffinit to allow specify the strings used
for high and low.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
| -rw-r--r-- | passes/techmap/dffinit.cc | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/passes/techmap/dffinit.cc b/passes/techmap/dffinit.cc index a8eecc970..4fa15a35b 100644 --- a/passes/techmap/dffinit.cc +++ b/passes/techmap/dffinit.cc @@ -43,6 +43,11 @@ struct DffinitPass : public Pass { log(" initial value of 1 or 0. (multi-bit values are not supported in this\n"); log(" mode.)\n"); log("\n"); + log(" -strinit <string for high> <string for low> \n"); + log(" use string values in the command line to represent a single-bit\n"); + log(" initial value of 1 or 0. (multi-bit values are not supported in this\n"); + log(" mode.)\n"); + log("\n"); } void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE { @@ -50,11 +55,20 @@ struct DffinitPass : public Pass { dict<IdString, dict<IdString, IdString>> ff_types; bool highlow_mode = false; + std::string high_string, low_string; size_t argidx; for (argidx = 1; argidx < args.size(); argidx++) { if (args[argidx] == "-highlow") { highlow_mode = true; + high_string = "high"; + low_string = "low"; + continue; + } + if (args[argidx] == "-strinit" && argidx+2 < args.size()) { + highlow_mode = true; + high_string = args[++argidx]; + low_string = args[++argidx]; continue; } if (args[argidx] == "-ff" && argidx+3 < args.size()) { @@ -121,9 +135,9 @@ struct DffinitPass : public Pass { log_error("Multi-bit init value for %s.%s.%s is incompatible with -highlow mode.\n", log_id(module), log_id(cell), log_id(it.second)); if (value[0] == State::S1) - value = Const("high"); + value = Const(high_string); else - value = Const("low"); + value = Const(low_string); } log("Setting %s.%s.%s (port=%s, net=%s) to %s.\n", log_id(module), log_id(cell), log_id(it.second), |