Add simple loop execution testbench

1 files changed, 83 insertions, 0 deletions

diff --git a/tb/top/conspiracion.cpp b/tb/top/conspiracion.cpp
new file mode 100644
index 0000000..65e3634
--- /dev/null
+++ b/tb/top/conspiracion.cpp
@@ -0,0 +1,83 @@
+#include <cstdio>
+
+#include <verilated.h>
+#include <verilated_vcd_c.h>
+
+#include "Vconspiracion.h"
+#include "Vconspiracion_conspiracion.h"
+#include "Vconspiracion_platform.h"
+
+#include "../avalon.hpp"
+#include "../mem.hpp"
+
+int main(int argc, char **argv)
+{
+	using namespace taller::avalon;
+
+    Verilated::commandArgs(argc, argv);
+
+	Vconspiracion top;
+
+#ifdef TRACE
+	Verilated::traceEverOn(true);
+	VerilatedVcdC trace;
+
+	top.trace(&trace, 0);
+	trace.open("trace.vcd");
+#endif
+
+	interconnect<Vconspiracion_platform> avl(*top.conspiracion->plat);
+	mem hps_ddr3(0x0000'0000, 512 << 20);
+
+	avl.attach(hps_ddr3);
+
+	/*     mov r0, #69
+	 *     mov r1, #-10
+	 * loop1:
+	 *     tst r1, r1
+	 *     beq loop2
+	 *     add r1, r1, #1
+	 *     sub r0, r0, #1
+	 *     b   loop1
+	 * loop2:
+	 *     b   loop2
+	 */
+	hps_ddr3.write(0, 0xe3a00045);
+	hps_ddr3.write(1, 0xe3e01009);
+	hps_ddr3.write(2, 0xe1110001);
+	hps_ddr3.write(3, 0x0a000002);
+	hps_ddr3.write(4, 0xe2811001);
+	hps_ddr3.write(5, 0xe2400001);
+	hps_ddr3.write(6, 0xeafffffa);
+	hps_ddr3.write(7, 0xeafffffe);
+
+	int time = 0;
+	top.clk_clk = 1;
+
+	auto tick = [&]()
+	{
+		top.clk_clk = !top.clk_clk;
+		top.eval();
+		avl.tick(top.clk_clk);
+#ifdef TRACE
+		trace.dump(time++);
+#endif
+	};
+
+	auto cycle = [&]()
+	{
+		tick();
+		tick();
+	};
+
+	for(int i = 0; i < 256; ++i)
+	{
+		cycle();
+	}
+
+#ifdef TRACE
+	trace.close();
+#endif
+
+    top.final();
+}