Add minimal Renode port

docs/shared_bindings_matrix.py

@@ -40,6 +40,7 @@
     "mimxrt10xx",
     "nordic",
     "raspberrypi",
+    "renode",
     "silabs",
     "stm",
 ]

docs/supported_ports.rst

@@ -20,6 +20,7 @@ Additional testing is limited.
     ../ports/mimxrt10xx/README
     ../ports/nordic/README
     ../ports/raspberrypi/README
+    ../ports/renode/README
     ../ports/silabs/README
     ../ports/stm/README
     ../ports/unix/README

main.c

@@ -58,7 +58,6 @@
 #include "supervisor/shared/tick.h"
 #include "supervisor/shared/traceback.h"
 #include "supervisor/shared/workflow.h"
-#include "supervisor/usb.h"
 #include "supervisor/workflow.h"
 #include "supervisor/shared/external_flash/external_flash.h"
 
@@ -115,10 +114,14 @@
 #include "supervisor/shared/status_bar.h"
 #endif
 
-#if CIRCUITPY_USB_HID
+#if CIRCUITPY_USB_DEVICE && CIRCUITPY_USB_HID
 #include "shared-module/usb_hid/__init__.h"
 #endif
 
+#if CIRCUITPY_TINYUSB
+#include "supervisor/usb.h"
+#endif
+
 #if CIRCUITPY_WIFI
 #include "shared-bindings/wifi/__init__.h"
 #endif
@@ -429,7 +432,7 @@ STATIC void print_code_py_status_message(safe_mode_t safe_mode) {
     }
 }
 
-STATIC bool run_code_py(safe_mode_t safe_mode, bool *simulate_reset) {
+STATIC bool __attribute__((noinline)) run_code_py(safe_mode_t safe_mode, bool *simulate_reset) {
     bool serial_connected_at_start = serial_connected();
     bool printed_safe_mode_message = false;
     #if CIRCUITPY_AUTORELOAD_DELAY_MS > 0
@@ -1160,7 +1163,7 @@ void gc_collect(void) {
     common_hal_bleio_gc_collect();
     #endif
 
-    #if CIRCUITPY_USB_HID
+    #if CIRCUITPY_USB_DEVICE && CIRCUITPY_USB_HID
     usb_hid_gc_collect();
     #endif
 

ports/espressif/common-hal/_bleio/Adapter.c

@@ -37,7 +37,6 @@
 #include "supervisor/shared/bluetooth/bluetooth.h"
 #include "supervisor/shared/safe_mode.h"
 #include "supervisor/shared/tick.h"
-#include "supervisor/usb.h"
 #include "shared-bindings/_bleio/__init__.h"
 #include "shared-bindings/_bleio/Adapter.h"
 #include "shared-bindings/_bleio/Address.h"
@@ -59,6 +58,10 @@
 #include "esp_bt.h"
 #include "esp_nimble_hci.h"
 
+#if CIRCUITPY_TINYUSB
+#include "supervisor/usb.h"
+#endif
+
 #if CIRCUITPY_OS_GETENV
 #include "shared-module/os/__init__.h"
 #endif

ports/espressif/supervisor/internal_flash.c

@@ -43,7 +43,10 @@
 
 #include "supervisor/filesystem.h"
 #include "supervisor/flash.h"
+
+#if CIRCUITPY_USB_DEVICE
 #include "supervisor/usb.h"
+#endif
 
 #define OP_READ     0
 #define OP_WRITE    1

ports/nordic/background.c

@@ -27,10 +27,7 @@
 #include "background.h"
 
 #include "py/runtime.h"
-#include "supervisor/filesystem.h"
 #include "supervisor/port.h"
-#include "supervisor/shared/stack.h"
-#include "supervisor/usb.h"
 
 #if CIRCUITPY_DISPLAYIO
 #include "shared-module/displayio/__init__.h"

ports/nordic/common-hal/_bleio/Adapter.c

@@ -26,7 +26,6 @@
  * THE SOFTWARE.
  */
 
-#include <math.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -43,14 +42,15 @@
 #include "supervisor/shared/bluetooth/bluetooth.h"
 #include "supervisor/shared/safe_mode.h"
 #include "supervisor/shared/tick.h"
-#include "supervisor/usb.h"
 #include "shared-bindings/_bleio/__init__.h"
 #include "shared-bindings/_bleio/Adapter.h"
 #include "shared-bindings/_bleio/Address.h"
 #include "shared-bindings/nvm/ByteArray.h"
 #include "shared-bindings/_bleio/Connection.h"
-#include "shared-bindings/_bleio/ScanEntry.h"
-#include "shared-bindings/time/__init__.h"
+
+#if CIRCUITPY_USB_DEVICE
+#include "supervisor/usb.h"
+#endif
 
 #if CIRCUITPY_OS_GETENV
 #include "shared-bindings/os/__init__.h"

ports/renode/Makefile

@@ -0,0 +1,128 @@
+# This file is part of the MicroPython project, http://micropython.org/
+#
+# The MIT License (MIT)
+#
+# SPDX-FileCopyrightText: Copyright (c) 2019 Dan Halbert for Adafruit Industries
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+include ../../py/circuitpy_mkenv.mk
+
+CROSS_COMPILE = arm-none-eabi-
+
+INC += \
+        -I. \
+        -I../.. \
+        -I../lib/mp-readline \
+        -I../shared/timeutils \
+        -Iboards/$(BOARD) \
+        -Iboards/ \
+        -isystem ./../../lib/cmsis/inc \
+        -I$(BUILD)
+
+CFLAGS += -ggdb3 -Os
+
+DISABLE_WARNINGS = -Wno-cast-align
+CFLAGS += $(INC) -Wall -Werror -std=gnu11 -fshort-enums $(BASE_CFLAGS) $(CFLAGS_MOD) $(COPT) $(DISABLE_WARNINGS) -Werror=missing-prototypes
+
+CFLAGS += \
+	-march=armv6-m \
+	-mthumb \
+	-mabi=aapcs \
+	-mcpu=cortex-m0plus \
+	-msoft-float \
+	-mfloat-abi=soft \
+	--specs=nano.specs
+
+# Use toolchain libm if we're not using our own.
+ifndef INTERNAL_LIBM
+LIBS += -lm
+endif
+
+LIBS += -lc
+
+SRC_C += \
+	boards/$(BOARD)/board.c \
+	boards/$(BOARD)/pins.c \
+	background.c \
+	mphalport.c \
+
+
+SRC_COMMON_HAL_EXPANDED = $(addprefix shared-bindings/, $(SRC_COMMON_HAL)) \
+                          $(addprefix shared-bindings/, $(SRC_BINDINGS_ENUMS)) \
+                          $(addprefix common-hal/, $(SRC_COMMON_HAL))
+
+SRC_SHARED_MODULE_EXPANDED = $(addprefix shared-bindings/, $(SRC_SHARED_MODULE)) \
+                             $(addprefix shared-module/, $(SRC_SHARED_MODULE)) \
+                             $(addprefix shared-module/, $(SRC_SHARED_MODULE_INTERNAL))
+
+# There may be duplicates between SRC_COMMON_HAL_EXPANDED and SRC_SHARED_MODULE_EXPANDED,
+# because a few modules have files both in common-hal/ and shared-module/.
+# Doing a $(sort ...) removes duplicates as part of sorting.
+SRC_COMMON_HAL_SHARED_MODULE_EXPANDED = $(sort $(SRC_COMMON_HAL_EXPANDED) $(SRC_SHARED_MODULE_EXPANDED))
+
+SRC_S = supervisor/$(CPU)_cpu.s
+
+OBJ = $(PY_O) $(SUPERVISOR_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
+OBJ += $(addprefix $(BUILD)/, $(SRC_COMMON_HAL_SHARED_MODULE_EXPANDED:.c=.o))
+ifeq ($(INTERNAL_LIBM),1)
+OBJ += $(addprefix $(BUILD)/, $(SRC_LIBM:.c=.o))
+endif
+OBJ += $(addprefix $(BUILD)/, $(SRC_CIRCUITPY_COMMON:.c=.o))
+OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))
+OBJ += $(addprefix $(BUILD)/, $(SRC_S_UPPER:.S=.o))
+OBJ += $(addprefix $(BUILD)/, $(SRC_MOD:.c=.o))
+
+$(BUILD)/%.o: $(BUILD)/%.S
+	$(STEPECHO) "CC $<"
+	$(Q)$(CC) $(CFLAGS) -c -o $@ $<
+
+SRC_QSTR += $(SRC_C) $(SRC_SUPERVISOR) $(SRC_COMMON_HAL_EXPANDED) $(SRC_SHARED_MODULE_EXPANDED) $(SRC_CIRCUITPY_COMMON)
+
+all: $(BUILD)/firmware.elf $(BUILD)/circuitpy.img
+
+BOARD_LD := $(wildcard boards/$(BOARD)/link.ld)
+
+ifneq ($(BOARD_LD),)
+	LINKER_SCRIPTS = -Wl,-T,$(BOARD_LD)
+endif
+
+LINKER_SCRIPTS += -Wl,-T,link.ld
+
+$(BUILD)/circuitpy.img: circuitpy/code.py
+	$(STEPECHO) "Create $@"
+	$(Q)dd if=/dev/zero of=$(BUILD)/circuitpy.img bs=1 count=0 seek=512K
+	$(Q)mkfs.fat -n CIRCUITPY --offset=0 $(BUILD)/circuitpy.img
+	$(Q)mcopy -i $(BUILD)/circuitpy.img circuitpy/* ::
+
+ifeq ($(VALID_BOARD),)
+$(BUILD)/firmware.elf: invalid-board
+else
+$(BUILD)/firmware.elf: $(OBJ) $(BOARD_LD) link.ld
+	$(STEPECHO) "LINK $@"
+	$(Q)echo $(OBJ) > $(BUILD)/firmware.objs
+	$(Q)echo $(PICO_LDFLAGS) > $(BUILD)/firmware.ldflags
+	$(Q)$(CC) -o $@ $(CFLAGS) @$(BUILD)/firmware.ldflags $(LINKER_SCRIPTS) -Wl,--print-memory-usage -Wl,-Map=$@.map -Wl,-cref -Wl,--gc-sections @$(BUILD)/firmware.objs -Wl,-lc
+endif
+
+$(BUILD)/firmware.bin: $(BUILD)/firmware.elf
+	$(STEPECHO) "Create $@"
+	$(Q)$(OBJCOPY) -O binary -R .dtcm_bss $^ $@
+
+include $(TOP)/py/mkrules.mk

ports/renode/README.md

@@ -0,0 +1,49 @@
+# Renode
+
+Renode is an emulator targeting microcontroller-class devices. This port is a
+minimal version of CircuitPython that runs under Renode. Renode is designed to
+mimic full microcontrollers but CP uses more peripherals than what Renode has
+implemented so far. This port allows us to run on a variety of CPUs without
+worrying about peripherals.
+
+## Running
+
+1. Get Renode: https://renode.io/#downloads
+2. `cd ports/renode`
+3. `make BOARD=renode_cortex_m0plus`
+4. In another tab: `tio /tmp/cp-uart`
+5. `renode`
+6. In renode: `include @renode.resc`
+7. <Any other setup>
+8. `start`
+9. `pause`
+10. `quit`
+
+Step 4 sets up `tio` to talk to CircuitPython via UART <-> PTY bridge.
+
+## Other stuff
+
+### Emulator logging
+Renode modules have debug logging that can be enabled with `logLevel` with an int
+between `-1` for `NOISY` and `3` for errors only.
+
+### GDB
+
+Renode can provide a GDB server. It is very useful for precisely controlling the
+emulator's execution.
+
+```
+machine StartGdbServer 3333 true
+```
+
+### Execution profiling
+
+In renode do `cpu EnableProfiler CollapsedStack $ORIGIN/profile.folded` before starting
+the emulation. You can view it using [Speedscope](https://www.speedscope.app/). CircuitPython calls
+a lot of functions and may overwhelm speedscope. You can enable this tracing over a specific
+section of CircuitPython execution to limit the capture size.
+
+[Related Renode Docs](https://renode.readthedocs.io/en/latest/advanced/execution-tracing.html)
+
+### Execution tracing
+If you want to see every instruction run you can do: `cpu CreateExecutionTracing "tracer_name" $ORIGIN/instruction_trace.txt Disassembly`.

ports/renode/Simple32kHz.cs

@@ -0,0 +1,50 @@
+//
+// Copyright (c) 2010-2022 Antmicro
+// Copyright (c) 2011-2015 Realtime Embedded
+//
+// This file is licensed under the MIT License.
+// Full license text is available in 'licenses/MIT.txt'.
+//
+// This is modified for CircuitPython to tick at 32kHz like a slow external
+// crystal would.
+using System;
+using Antmicro.Renode.Core;
+using Antmicro.Renode.Peripherals.Bus;
+using Antmicro.Renode.Time;
+using Antmicro.Renode.Logging;
+using System.Threading;
+
+namespace Antmicro.Renode.Peripherals.Timers
+{
+    public class Simple32kHz : IDoubleWordPeripheral, IKnownSize
+    {
+        public long Size { get { return 0x4; } }
+
+        public Simple32kHz(IMachine machine)
+        {
+            machine.ClockSource.AddClockEntry(new ClockEntry(1, 32768, OnTick, this, String.Empty));
+        }
+
+        public virtual uint ReadDoubleWord(long offset)
+        {
+            return (uint)counter;
+        }
+
+        public virtual void WriteDoubleWord(long offset, uint value)
+        {
+            this.LogUnhandledWrite(offset, value);
+        }
+
+        public virtual void Reset()
+        {
+            Interlocked.Exchange(ref counter, 0);
+        }
+
+        private void OnTick()
+        {
+            Interlocked.Increment(ref counter);
+        }
+
+        private int counter;
+    }
+}

ports/renode/background.c

@@ -0,0 +1,39 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "supervisor/port.h"
+
+void port_start_background_tick(void) {
+}
+
+void port_finish_background_tick(void) {
+}
+
+void port_background_tick(void) {
+}
+
+void port_background_task(void) {
+}