From 307955c810e8d2cdfd9b036efcb562cc20feef4a Mon Sep 17 00:00:00 2001
From: Luke Wren <wren6991@gmail.com>
Date: Tue, 13 Jul 2021 01:10:55 +0100
Subject: [PATCH] Make CPU regfile nonresettable when FPGA symbol is defined,
 to support BRAM inference

---
 hdl/hazard3_core.v                    |  2 ++
 test/sim/debug_module_vectors/tb.f    |  2 +-
 test/sim/debug_openocd_bitbang/tb.cpp | 11 -----------
 3 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/hdl/hazard3_core.v b/hdl/hazard3_core.v
index 776795e..76f2e35 100644
--- a/hdl/hazard3_core.v
+++ b/hdl/hazard3_core.v
@@ -707,6 +707,8 @@ hazard3_regfile_1w2r #(
 	.RESET_REGS(1),
 `elsif FORMAL
 	.RESET_REGS(1),
+`elsif FPGA
+	.RESET_REGS(0),
 `else
 	.RESET_REGS(1),
 `endif
diff --git a/test/sim/debug_module_vectors/tb.f b/test/sim/debug_module_vectors/tb.f
index b5b9508..2a4d153 100644
--- a/test/sim/debug_module_vectors/tb.f
+++ b/test/sim/debug_module_vectors/tb.f
@@ -1,4 +1,4 @@
 file tb.v
 
 list $HDL/hazard3.f
-file $HDL/debug/dm/hazard3_dm.v
+list $HDL/debug/dm/hazard3_dm.f
diff --git a/test/sim/debug_openocd_bitbang/tb.cpp b/test/sim/debug_openocd_bitbang/tb.cpp
index af5ee85..367a42f 100644
--- a/test/sim/debug_openocd_bitbang/tb.cpp
+++ b/test/sim/debug_openocd_bitbang/tb.cpp
@@ -38,14 +38,6 @@ void exit_help(std::string errtext = "") {
 	exit(-1);
 }
 
-enum cmdstate {
-	S_IDLE = 0,
-	S_WRITE_SETUP,
-	S_WRITE_ACCESS,
-	S_READ_SETUP,
-	S_READ_ACCESS
-};
-
 int main(int argc, char **argv) {
 
 	if (argc < 2)
@@ -179,9 +171,6 @@ int main(int argc, char **argv) {
 	top.p_rst__n.set<bool>(true);
 	top.step();
 
-	cmdstate state = S_IDLE;
-	int idle_counter = 0;
-
 	for (int64_t cycle = 0; cycle < max_cycles; ++cycle) {
 		top.p_clk.set<bool>(false);
 		top.step();