From: Icenowy Zheng <icenowy@aosc.io>
Date: Tue, 18 Dec 2018 07:37:43 +0000 (+0800)
Subject: Add "dffinit -strinit high low"
X-Git-Tag: yosys-0.9~349^2^2~2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fec8b3c81ffcf1f8a27e79250c05b6ea91571bbe;p=yosys.git

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>
---

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),