Add STM32G431 and STM32G474 board definitions. (#11793)

* Add STM32G431 and STM32G474 board definitions.

* Add docs.

data/schemas/keyboard.jsonschema

@@ -25,7 +25,7 @@
         },
         "processor": {
             "type": "string",
-            "enum": ["cortex-m0", "cortex-m0plus", "cortex-m3", "cortex-m4", "MKL26Z64", "MK20DX128", "MK20DX256", "STM32F042", "STM32F072", "STM32F103", "STM32F303", "STM32F401", "STM32F411", "atmega16u2", "atmega32u2", "atmega16u4", "atmega32u4", "at90usb162", "at90usb646", "at90usb647", "at90usb1286", "at90usb1287", "atmega32a", "atmega328p", "atmega328", "attiny85", "unknown"]
+            "enum": ["cortex-m0", "cortex-m0plus", "cortex-m3", "cortex-m4", "MKL26Z64", "MK20DX128", "MK20DX256", "STM32F042", "STM32F072", "STM32F103", "STM32F303", "STM32F401", "STM32F411", "STM32G431", "STM32G474", "atmega16u2", "atmega32u2", "atmega16u4", "atmega32u4", "at90usb162", "at90usb646", "at90usb647", "at90usb1286", "at90usb1287", "atmega32a", "atmega328p", "atmega328", "attiny85", "unknown"]
         },
         "board": {
             "type": "string",

docs/compatible_microcontrollers.md

@@ -26,6 +26,10 @@ You can also use any ARM chip with USB that [ChibiOS](https://www.chibios.org) s
  * [STM32F0x2](https://www.st.com/en/microcontrollers-microprocessors/stm32f0x2.html)
  * [STM32F103](https://www.st.com/en/microcontrollers-microprocessors/stm32f103.html)
  * [STM32F303](https://www.st.com/en/microcontrollers-microprocessors/stm32f303.html)
+ * [STM32F401](https://www.st.com/en/microcontrollers-microprocessors/stm32f401.html)
+ * [STM32F411](https://www.st.com/en/microcontrollers-microprocessors/stm32f411.html)
+ * [STM32G431](https://www.st.com/en/microcontrollers-microprocessors/stm32g4x1.html)
+ * [STM32G474](https://www.st.com/en/microcontrollers-microprocessors/stm32g4x4.html)
 
 ### NXP (Kinetis)
 

docs/ja/compatible_microcontrollers.md

@@ -31,6 +31,10 @@ QMK は十分な容量のフラッシュメモリを備えた USB 対応 AVR ま
 * [STM32F0x2](https://www.st.com/en/microcontrollers-microprocessors/stm32f0x2.html)
 * [STM32F103](https://www.st.com/en/microcontrollers-microprocessors/stm32f103.html)
 * [STM32F303](https://www.st.com/en/microcontrollers-microprocessors/stm32f303.html)
+* [STM32F401](https://www.st.com/en/microcontrollers-microprocessors/stm32f401.html)
+* [STM32F411](https://www.st.com/en/microcontrollers-microprocessors/stm32f411.html)
+* [STM32G431](https://www.st.com/en/microcontrollers-microprocessors/stm32g4x1.html)
+* [STM32G474](https://www.st.com/en/microcontrollers-microprocessors/stm32g4x4.html)
 
 ### NXP (Kinetis)
 

lib/python/qmk/constants.py

@@ -10,7 +10,7 @@ QMK_FIRMWARE = Path.cwd()
 MAX_KEYBOARD_SUBFOLDERS = 5
 
 # Supported processor types
-CHIBIOS_PROCESSORS = 'cortex-m0', 'cortex-m0plus', 'cortex-m3', 'cortex-m4', 'MKL26Z64', 'MK20DX128', 'MK20DX256', 'STM32F042', 'STM32F072', 'STM32F103', 'STM32F303', 'STM32F401', 'STM32F411'
+CHIBIOS_PROCESSORS = 'cortex-m0', 'cortex-m0plus', 'cortex-m3', 'cortex-m4', 'MKL26Z64', 'MK20DX128', 'MK20DX256', 'STM32F042', 'STM32F072', 'STM32F103', 'STM32F303', 'STM32F401', 'STM32F411', 'STM32G431', 'STM32G474'
 LUFA_PROCESSORS = 'at90usb162', 'atmega16u2', 'atmega32u2', 'atmega16u4', 'atmega32u4', 'at90usb646', 'at90usb647', 'at90usb1286', 'at90usb1287', None
 VUSB_PROCESSORS = 'atmega32a', 'atmega328p', 'atmega328', 'attiny85'
 

platforms/chibios/GENERIC_STM32_G431XB/board/board.mk

@@ -0,0 +1,9 @@
+# List of all the board related files.
+BOARDSRC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO64_G431RB/board.c
+
+# Required include directories
+BOARDINC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO64_G431RB
+
+# Shared variables
+ALLCSRC += $(BOARDSRC)
+ALLINC  += $(BOARDINC)

platforms/chibios/GENERIC_STM32_G431XB/configs/config.h

@@ -0,0 +1,23 @@
+/* Copyright 2018-2020 Nick Brassel (@tzarc)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Address for jumping to bootloader on STM32 chips. */
+/* It is chip dependent, the correct number can be looked up here (page 175):
+ * http://www.st.com/web/en/resource/technical/document/application_note/CD00167594.pdf
+ * This also requires a patch to chibios:
+ *  <tmk_dir>/tmk_core/tool/chibios/ch-bootloader-jump.patch
+ */
+#define STM32_BOOTLOADER_ADDRESS 0x1FFF0000

platforms/chibios/GENERIC_STM32_G474XE/board/board.mk

@@ -0,0 +1,9 @@
+# List of all the board related files.
+BOARDSRC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO64_G474RE/board.c
+
+# Required include directories
+BOARDINC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO64_G474RE
+
+# Shared variables
+ALLCSRC += $(BOARDSRC)
+ALLINC  += $(BOARDINC)

platforms/chibios/GENERIC_STM32_G474XE/configs/config.h

@@ -0,0 +1,30 @@
+/* Copyright 2020 Nick Brassel (tzarc)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#ifndef STM32_BOOTLOADER_DUAL_BANK
+#    define STM32_BOOTLOADER_DUAL_BANK FALSE
+#endif
+
+// To Enter bootloader from `RESET` keycode, you'll need to dedicate a GPIO to
+// charge an RC network on the BOOT0 pin.
+// See the QMK Discord's #hardware channel pins for an example circuit.
+// Insert these two lines into your keyboard's `config.h` file.
+// In the case below, PB7 is selected to charge.
+#if 0
+#define STM32_BOOTLOADER_DUAL_BANK TRUE
+#define STM32_BOOTLOADER_DUAL_BANK_GPIO B7
+#endif

quantum/mcu_selection.mk

@@ -279,6 +279,72 @@ ifneq ($(findstring STM32F411, $(MCU)),)
   DFU_SUFFIX_ARGS ?= -v 0483 -p DF11
 endif
 
+ifneq ($(findstring STM32G431, $(MCU)),)
+  # Cortex version
+  MCU = cortex-m4
+
+  # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+  ARMV = 7
+
+  ## chip/board settings
+  # - the next two should match the directories in
+  #   <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+  MCU_FAMILY = STM32
+  MCU_SERIES = STM32G4xx
+
+  # Linker script to use
+  # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+  #   or <keyboard_dir>/ld/
+  MCU_LDSCRIPT ?= STM32G431xB
+
+  # Startup code to use
+  #  - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+  MCU_STARTUP ?= stm32g4xx
+
+  # Board: it should exist either in <chibios>/os/hal/boards/,
+  # <keyboard_dir>/boards/, or drivers/boards/
+  BOARD ?= GENERIC_STM32_G431XB
+
+  USE_FPU ?= yes
+
+  # Options to pass to dfu-util when flashing
+  DFU_ARGS ?= -d 0483:DF11 -a 0 -s 0x08000000:leave
+  DFU_SUFFIX_ARGS ?= -v 0483 -p DF11
+endif
+
+ifneq ($(findstring STM32G474, $(MCU)),)
+  # Cortex version
+  MCU = cortex-m4
+
+  # ARM version, CORTEX-M0/M1 are 6, CORTEX-M3/M4/M7 are 7
+  ARMV = 7
+
+  ## chip/board settings
+  # - the next two should match the directories in
+  #   <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
+  MCU_FAMILY = STM32
+  MCU_SERIES = STM32G4xx
+
+  # Linker script to use
+  # - it should exist either in <chibios>/os/common/ports/ARMCMx/compilers/GCC/ld/
+  #   or <keyboard_dir>/ld/
+  MCU_LDSCRIPT ?= STM32G474xE
+
+  # Startup code to use
+  #  - it should exist in <chibios>/os/common/startup/ARMCMx/compilers/GCC/mk/
+  MCU_STARTUP ?= stm32g4xx
+
+  # Board: it should exist either in <chibios>/os/hal/boards/,
+  # <keyboard_dir>/boards/, or drivers/boards/
+  BOARD ?= GENERIC_STM32_G474XE
+
+  USE_FPU ?= yes
+
+  # Options to pass to dfu-util when flashing
+  DFU_ARGS ?= -d 0483:DF11 -a 0 -s 0x08000000:leave
+  DFU_SUFFIX_ARGS ?= -v 0483 -p DF11
+endif
+
 ifneq (,$(filter $(MCU),at90usb162 atmega16u2 atmega32u2 atmega16u4 atmega32u4 at90usb646 at90usb647 at90usb1286 at90usb1287))
   PROTOCOL = LUFA