From 122532b7e137a53a91be155668687246a25d27e7 Mon Sep 17 00:00:00 2001
From: Andrew Zonenberg <azonenberg@drawersteak.com>
Date: Wed, 13 Sep 2017 15:47:06 -0700
Subject: [PATCH] Added RESET_TO_MAX parameter to $__COUNT_ cell. Cannot yet be
 extracted.

---
 passes/techmap/extract_counter.cc   | 1 +
 techlibs/greenpak4/cells_blackbox.v | 1 +
 techlibs/greenpak4/cells_map.v      | 5 +++--
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/passes/techmap/extract_counter.cc b/passes/techmap/extract_counter.cc
index 3746a3cb6..1e20b1fd8 100644
--- a/passes/techmap/extract_counter.cc
+++ b/passes/techmap/extract_counter.cc
@@ -493,6 +493,7 @@ void counter_worker(
 
 	//Hook up hard-wired ports (for now up/down are not supported), default to no parallel output
 	cell->setParam("\\HAS_POUT", RTLIL::Const(0));
+	cell->setParam("\\RESET_TO_MAX", RTLIL::Const(0));
 	cell->setParam("\\DIRECTION", RTLIL::Const("DOWN"));
 	cell->setPort("\\CE", RTLIL::Const(1));
 	cell->setPort("\\UP", RTLIL::Const(0));
diff --git a/techlibs/greenpak4/cells_blackbox.v b/techlibs/greenpak4/cells_blackbox.v
index 8dd38a027..1895b90de 100644
--- a/techlibs/greenpak4/cells_blackbox.v
+++ b/techlibs/greenpak4/cells_blackbox.v
@@ -9,6 +9,7 @@ module \$__COUNT_ (CE, CLK, OUT, POUT, RST, UP);
 
 	parameter COUNT_TO = 1;
 	parameter RESET_MODE = "RISING";
+	parameter RESET_TO_MAX = "1";
 	parameter HAS_POUT = 0;
 	parameter HAS_CE = 0;
 	parameter WIDTH = 8;
diff --git a/techlibs/greenpak4/cells_map.v b/techlibs/greenpak4/cells_map.v
index 9897d4e35..b971a51fa 100644
--- a/techlibs/greenpak4/cells_map.v
+++ b/techlibs/greenpak4/cells_map.v
@@ -156,6 +156,7 @@ module \$__COUNT_ (CE, CLK, OUT, POUT, RST, UP);
 
 	parameter COUNT_TO = 1;
 	parameter RESET_MODE = "RISING";
+	parameter RESET_TO_MAX = 0;
 	parameter HAS_POUT = 0;
 	parameter HAS_CE = 0;
 	parameter WIDTH = 8;
@@ -196,7 +197,7 @@ module \$__COUNT_ (CE, CLK, OUT, POUT, RST, UP);
 			GP_COUNT8_ADV #(
 				.COUNT_TO(COUNT_TO),
 				.RESET_MODE(RESET_MODE),
-				.RESET_VALUE("COUNT_TO"),
+				.RESET_VALUE(RESET_TO_MAX ? "COUNT_TO" : "ZERO"),
 				.CLKIN_DIVIDE(1)
 			) _TECHMAP_REPLACE_ (
 				.CLK(CLK),
@@ -230,7 +231,7 @@ module \$__COUNT_ (CE, CLK, OUT, POUT, RST, UP);
 			);
 			GP_COUNT14_ADV #(
 				.COUNT_TO(COUNT_TO),
-				.RESET_MODE(RESET_MODE),
+				.RESET_MODE(RESET_TO_MAX ? "COUNT_TO" : "ZERO"),
 				.RESET_VALUE("COUNT_TO"),
 				.CLKIN_DIVIDE(1)
 			) _TECHMAP_REPLACE_ (
-- 
2.30.2