jacaranda-8 test bench
diff --git a/verilog/dv/jacaranda_test/Makefile b/verilog/dv/jacaranda_test/Makefile
new file mode 100644
index 0000000..cd42435
--- /dev/null
+++ b/verilog/dv/jacaranda_test/Makefile
@@ -0,0 +1,96 @@
+# SPDX-FileCopyrightText: 2020 Efabless Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+## PDK
+PDK_PATH = $(PDK_ROOT)/sky130A
+
+## Caravel Pointers
+CARAVEL_ROOT ?= ../../../caravel
+CARAVEL_PATH ?= $(CARAVEL_ROOT)
+CARAVEL_FIRMWARE_PATH = $(CARAVEL_PATH)/verilog/dv/caravel
+CARAVEL_VERILOG_PATH = $(CARAVEL_PATH)/verilog
+CARAVEL_RTL_PATH = $(CARAVEL_VERILOG_PATH)/rtl
+CARAVEL_BEHAVIOURAL_MODELS = $(CARAVEL_VERILOG_PATH)/dv/caravel
+
+## User Project Pointers
+UPRJ_VERILOG_PATH ?= ../../../verilog
+UPRJ_RTL_PATH = $(UPRJ_VERILOG_PATH)/rtl
+UPRJ_BEHAVIOURAL_MODELS = ../
+
+## RISCV GCC
+GCC_PATH?=/ef/apps/bin
+GCC_PREFIX?=riscv32-unknown-elf
+
+## Simulation mode: RTL/GL
+SIM_DEFINES = -DFUNCTIONAL -DSIM
+SIM?=RTL
+
+.SUFFIXES:
+
+PATTERN = jacaranda_test
+
+all: ${PATTERN:=.vcd}
+
+hex: ${PATTERN:=.hex}
+
+%.vvp: %_tb.v %.hex
+ifeq ($(SIM),RTL)
+ iverilog $(SIM_DEFINES) -I $(PDK_PATH) \
+ -I $(CARAVEL_BEHAVIOURAL_MODELS) -I $(CARAVEL_RTL_PATH) \
+ -I $(UPRJ_BEHAVIOURAL_MODELS) -I $(UPRJ_RTL_PATH) \
+ $< -o $@
+else
+ iverilog $(SIM_DEFINES) -DGL -I $(PDK_PATH) \
+ -I $(CARAVEL_BEHAVIOURAL_MODELS) -I $(CARAVEL_RTL_PATH) -I $(CARAVEL_VERILOG_PATH) \
+ -I $(UPRJ_BEHAVIOURAL_MODELS) -I$(UPRJ_RTL_PATH) -I $(UPRJ_VERILOG_PATH) \
+ $< -o $@
+endif
+
+%.vcd: %.vvp
+ vvp $<
+
+%.elf: %.c $(CARAVEL_FIRMWARE_PATH)/sections.lds $(CARAVEL_FIRMWARE_PATH)/start.s check-env
+ ${GCC_PATH}/${GCC_PREFIX}-gcc -I $(CARAVEL_PATH) -march=rv32imc -mabi=ilp32 -Wl,-Bstatic,-T,$(CARAVEL_FIRMWARE_PATH)/sections.lds,--strip-debug -ffreestanding -nostdlib -o $@ $(CARAVEL_FIRMWARE_PATH)/start.s $<
+
+%.hex: %.elf
+ ${GCC_PATH}/${GCC_PREFIX}-objcopy -O verilog $< $@
+ # to fix flash base address
+ sed -i 's/@10000000/@00000000/g' $@
+
+%.bin: %.elf
+ ${GCC_PATH}/${GCC_PREFIX}-objcopy -O binary $< /dev/stdout | tail -c +1048577 > $@
+
+check-env:
+ifndef PDK_ROOT
+ $(error PDK_ROOT is undefined, please export it before running make)
+endif
+ifeq (,$(wildcard $(PDK_ROOT)/sky130A))
+ $(error $(PDK_ROOT)/sky130A not found, please install pdk before running make)
+endif
+ifeq (,$(wildcard $(GCC_PATH)/$(GCC_PREFIX)-gcc ))
+ $(error $(GCC_PATH)/$(GCC_PREFIX)-gcc is not found, please export GCC_PATH and GCC_PREFIX before running make)
+endif
+# check for efabless style installation
+ifeq (,$(wildcard $(PDK_ROOT)/sky130A/libs.ref/*/verilog))
+SIM_DEFINES := ${SIM_DEFINES} -DEF_STYLE
+endif
+
+# ---- Clean ----
+
+clean:
+ rm -f *.elf *.hex *.bin *.vvp *.vcd *.log
+
+.PHONY: clean hex all
diff --git a/verilog/dv/jacaranda_test/jacaranda_test_tb.v b/verilog/dv/jacaranda_test/jacaranda_test_tb.v
new file mode 100644
index 0000000..2c25a43
--- /dev/null
+++ b/verilog/dv/jacaranda_test/jacaranda_test_tb.v
@@ -0,0 +1,128 @@
+// SPDX-FileCopyrightText: 2020 Efabless Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// SPDX-License-Identifier: Apache-2.0
+
+`default_nettype none
+
+`timescale 1 ns / 1 ps
+
+`include "uprj_netlists.v"
+`include "caravel_netlists.v"
+`include "spiflash.v"
+
+module jacaranda_test_tb;
+ reg clock;
+ reg RSTB;
+ reg CSB;
+ reg power1, power2;
+ reg power3, power4;
+
+ wire gpio;
+ wire [37:0] mprj_io;
+
+ // External clock is used by default. Make this artificially fast for the
+ // simulation. Normally this would be a slow clock and the digital PLL
+ // would be the fast clock.
+
+ always #12.5 clock <= (clock === 1'b0);
+
+ initial begin
+ clock = 0;
+ end
+
+ initial begin
+ $dumpfile("jacaranda_test.vcd");
+ $dumpvars(0, jacaranda_test_tb);
+
+ // Repeat cycles of 1000 clock edges as needed to complete testbench
+ repeat (30) begin
+ repeat (1000) @(posedge clock);
+ $display("+1000 cycles");
+ end
+ $finish;
+ end
+
+ initial begin
+ RSTB <= 1'b0;
+ CSB <= 1'b1; // Force CSB high
+ #2000;
+ RSTB <= 1'b1; // Release reset
+ #170000;
+ CSB = 1'b0; // CSB can be released
+ end
+
+ initial begin // Power-up sequence
+ power1 <= 1'b0;
+ power2 <= 1'b0;
+ power3 <= 1'b0;
+ power4 <= 1'b0;
+ #100;
+ power1 <= 1'b1;
+ #100;
+ power2 <= 1'b1;
+ #100;
+ power3 <= 1'b1;
+ #100;
+ power4 <= 1'b1;
+ end
+
+ wire flash_csb;
+ wire flash_clk;
+ wire flash_io0;
+ wire flash_io1;
+
+ wire VDD3V3 = power1;
+ wire VDD1V8 = power2;
+ wire USER_VDD3V3 = power3;
+ wire USER_VDD1V8 = power4;
+ wire VSS = 1'b0;
+
+ caravel uut (
+ .vddio (VDD3V3),
+ .vssio (VSS),
+ .vdda (VDD3V3),
+ .vssa (VSS),
+ .vccd (VDD1V8),
+ .vssd (VSS),
+ .vdda1 (USER_VDD3V3),
+ .vdda2 (USER_VDD3V3),
+ .vssa1 (VSS),
+ .vssa2 (VSS),
+ .vccd1 (USER_VDD1V8),
+ .vccd2 (USER_VDD1V8),
+ .vssd1 (VSS),
+ .vssd2 (VSS),
+ .clock (clock),
+ .gpio (gpio),
+ .mprj_io (mprj_io),
+ .flash_csb(flash_csb),
+ .flash_clk(flash_clk),
+ .flash_io0(flash_io0),
+ .flash_io1(flash_io1),
+ .resetb (RSTB)
+ );
+
+ spiflash #(
+ .FILENAME("jacaranda_test.hex")
+ ) spiflash (
+ .csb(flash_csb),
+ .clk(flash_clk),
+ .io0(flash_io0),
+ .io1(flash_io1),
+ .io2(), // not used
+ .io3() // not used
+ );
+
+endmodule
+`default_nettype wire
