Add files via upload
diff --git a/verilog/dv/io_ports/Makefile b/verilog/dv/io_ports/Makefile
new file mode 100644
index 0000000..5237a05
--- /dev/null
+++ b/verilog/dv/io_ports/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 = io_ports
+
+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/io_ports/io_ports.c b/verilog/dv/io_ports/io_ports.c
new file mode 100644
index 0000000..0b23571
--- /dev/null
+++ b/verilog/dv/io_ports/io_ports.c
@@ -0,0 +1,72 @@
+/*
+ * 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
+ */
+
+// This include is relative to $CARAVEL_PATH (see Makefile)
+#include "verilog/dv/caravel/defs.h"
+#include "verilog/dv/caravel/stub.c"
+
+/*
+ IO Test:
+ - Configures MPRJ lower 8-IO pins as outputs
+ - Observes counter value through the MPRJ lower 8 IO pins (in the testbench)
+*/
+
+void main()
+{
+ /*
+ IO Control Registers
+ | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN |
+ | 3-bits | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit | 1-bit |
+
+ Output: 0000_0110_0000_1110 (0x1808) = GPIO_MODE_USER_STD_OUTPUT
+ | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN |
+ | 110 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
+
+
+ Input: 0000_0001_0000_1111 (0x0402) = GPIO_MODE_USER_STD_INPUT_NOPULL
+ | DM | VTRIP | SLOW | AN_POL | AN_SEL | AN_EN | MOD_SEL | INP_DIS | HOLDH | OEB_N | MGMT_EN |
+ | 001 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
+
+ */
+
+ /* Set up the housekeeping SPI to be connected internally so */
+ /* that external pin changes don't affect it. */
+
+ reg_spimaster_config = 0xa002; // Enable, prescaler = 2,
+ // connect to housekeeping SPI
+
+ // Connect the housekeeping SPI to the SPI master
+ // so that the CSB line is not left floating. This allows
+ // all of the GPIO pins to be used for user functions.
+
+ // Configure lower 8-IOs as user output
+ // Observe counter value in the testbench
+ reg_mprj_io_0 = GPIO_MODE_USER_STD_OUTPUT;
+ reg_mprj_io_1 = GPIO_MODE_USER_STD_OUTPUT;
+ reg_mprj_io_2 = GPIO_MODE_USER_STD_OUTPUT;
+ reg_mprj_io_3 = GPIO_MODE_USER_STD_OUTPUT;
+ reg_mprj_io_4 = GPIO_MODE_USER_STD_OUTPUT;
+ reg_mprj_io_5 = GPIO_MODE_USER_STD_OUTPUT;
+ reg_mprj_io_6 = GPIO_MODE_USER_STD_OUTPUT;
+ reg_mprj_io_7 = GPIO_MODE_USER_STD_OUTPUT;
+
+ /* Apply configuration */
+ reg_mprj_xfer = 1;
+ while (reg_mprj_xfer == 1);
+
+}
+
diff --git a/verilog/dv/io_ports/io_ports.hex b/verilog/dv/io_ports/io_ports.hex
new file mode 100644
index 0000000..0f184fa
--- /dev/null
+++ b/verilog/dv/io_ports/io_ports.hex
@@ -0,0 +1,39 @@
+@00000000
+93 00 00 00 93 01 00 00 13 02 00 00 93 02 00 00
+13 03 00 00 93 03 00 00 13 04 00 00 93 04 00 00
+13 05 00 00 93 05 00 00 13 06 00 00 93 06 00 00
+13 07 00 00 93 07 00 00 13 08 00 00 93 08 00 00
+13 09 00 00 93 09 00 00 13 0A 00 00 93 0A 00 00
+13 0B 00 00 93 0B 00 00 13 0C 00 00 93 0C 00 00
+13 0D 00 00 93 0D 00 00 13 0E 00 00 93 0E 00 00
+13 0F 00 00 93 0F 00 00 17 05 00 00 13 05 85 1E
+93 05 00 00 13 06 00 00 63 D8 C5 00 14 41 94 C1
+11 05 91 05 E3 CC C5 FE 13 05 00 00 93 05 00 00
+63 57 B5 00 23 20 05 00 11 05 E3 4D B5 FE 11 22
+01 A0 01 00 B7 02 00 28 13 03 00 12 23 90 62 00
+A3 81 02 00 05 C6 21 4F 93 73 F6 0F 93 DE 73 00
+23 80 D2 01 93 EE 0E 01 23 80 D2 01 86 03 93 F3
+F3 0F 7D 1F E3 14 0F FE 23 80 62 00 A1 C9 13 0F
+00 02 83 23 05 00 A1 4F 93 DE F3 01 23 80 D2 01
+93 EE 0E 01 23 80 D2 01 83 CE 02 00 93 FE 2E 00
+93 DE 1E 00 86 03 B3 E3 D3 01 7D 1F 63 17 0F 00
+23 20 75 00 11 05 83 23 05 00 FD 1F E3 96 0F FC
+FD 15 F1 F1 63 04 0F 00 23 20 75 00 13 03 00 08
+A3 81 62 00 82 80 01 00 00 00 01 11 06 CE 22 CC
+00 10 AA 87 A3 07 F4 FE 03 47 F4 FE A9 47 63 14
+F7 00 35 45 DD 37 B7 07 00 20 91 07 03 47 F4 FE
+98 C3 01 00 F2 40 62 44 05 61 82 80 01 11 06 CE
+22 CC 00 10 23 26 A4 FE 19 A8 83 27 C4 FE 13 87
+17 00 23 26 E4 FE 83 C7 07 00 3E 85 7D 37 83 27
+C4 FE 83 C7 07 00 F5 F3 01 00 F2 40 62 44 05 61
+82 80 41 11 22 C6 00 08 B7 07 00 24 29 67 09 07
+98 C3 B7 07 00 26 93 87 47 02 09 67 13 07 87 80
+98 C3 B7 07 00 26 93 87 87 02 09 67 13 07 87 80
+98 C3 B7 07 00 26 93 87 C7 02 09 67 13 07 87 80
+98 C3 B7 07 00 26 93 87 07 03 09 67 13 07 87 80
+98 C3 B7 07 00 26 93 87 47 03 09 67 13 07 87 80
+98 C3 B7 07 00 26 93 87 87 03 09 67 13 07 87 80
+98 C3 B7 07 00 26 93 87 C7 03 09 67 13 07 87 80
+98 C3 B7 07 00 26 93 87 07 04 09 67 13 07 87 80
+98 C3 B7 07 00 26 05 47 98 C3 01 00 B7 07 00 26
+98 43 85 47 E3 0C F7 FE 01 00 32 44 41 01 82 80
diff --git a/verilog/dv/io_ports/io_ports_tb.v b/verilog/dv/io_ports/io_ports_tb.v
new file mode 100644
index 0000000..f7628bc
--- /dev/null
+++ b/verilog/dv/io_ports/io_ports_tb.v
@@ -0,0 +1,169 @@
+// 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 io_ports_tb;
+ reg clock;
+ reg RSTB;
+ reg CSB;
+ reg power1, power2;
+ reg power3, power4;
+
+ wire gpio;
+ wire [37:0] mprj_io;
+ wire [7:0] mprj_io_0;
+
+ assign mprj_io_0 = mprj_io[7:0];
+ // assign mprj_io_0 = {mprj_io[8:4],mprj_io[2:0]};
+
+ assign mprj_io[3] = (CSB == 1'b1) ? 1'b1 : 1'bz;
+ // assign mprj_io[3] = 1'b1;
+
+ // 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("io_ports.vcd");
+ $dumpvars(0, io_ports_tb);
+
+ // Repeat cycles of 1000 clock edges as needed to complete testbench
+ repeat (25) begin
+ repeat (1000) @(posedge clock);
+ // $display("+1000 cycles");
+ end
+ $display("%c[1;31m",27);
+ `ifdef GL
+ $display ("Monitor: Timeout, Test Mega-Project IO Ports (GL) Failed");
+ `else
+ $display ("Monitor: Timeout, Test Mega-Project IO Ports (RTL) Failed");
+ `endif
+ $display("%c[0m",27);
+ $finish;
+ end
+
+ initial begin
+ // Observe Output pins [7:0]
+ wait(mprj_io_0 == 8'h01);
+ wait(mprj_io_0 == 8'h02);
+ wait(mprj_io_0 == 8'h03);
+ wait(mprj_io_0 == 8'h04);
+ wait(mprj_io_0 == 8'h05);
+ wait(mprj_io_0 == 8'h06);
+ wait(mprj_io_0 == 8'h07);
+ wait(mprj_io_0 == 8'h08);
+ wait(mprj_io_0 == 8'h09);
+ wait(mprj_io_0 == 8'h0A);
+ wait(mprj_io_0 == 8'hFF);
+ wait(mprj_io_0 == 8'h00);
+
+ `ifdef GL
+ $display("Monitor: Test 1 Mega-Project IO (GL) Passed");
+ `else
+ $display("Monitor: Test 1 Mega-Project IO (RTL) Passed");
+ `endif
+ $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
+
+ always @(mprj_io) begin
+ #1 $display("MPRJ-IO state = %b ", mprj_io[7:0]);
+ 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("io_ports.hex")
+ ) spiflash (
+ .csb(flash_csb),
+ .clk(flash_clk),
+ .io0(flash_io0),
+ .io1(flash_io1),
+ .io2(), // not used
+ .io3() // not used
+ );
+
+endmodule
+`default_nettype wire
