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[Core] Add support for RISC-V builds and GD32VF103 MCU (#12508)

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* Add support for RISC-V builds and GD32VF103 MCU

* Add toolchain selection in chibios.mk based on the mcu selected in
mcu_selection.mk
* Reorder and added comments to chibios.mk to have a streamlined makefile
* Add GD32VF103 mcu to possible targets for QMK.
* Add STM32 compatibility for GD32VF103 MCU, this is hacky but more efficent
  then rewriting every driver.
* Add GigaDevice DFU bootloader as flash target, please note that
  dfu-util of at least version 0.10 is needed.
* Add analog driver compatibility
* Add apa102 bitbang driver compatibility
* Add ws2812 bitbang driver compatibility
* Add eeprom in flash emulation compatibility
* Allow faster re-builds with ccache

* Add SiPeed Longan Nano to platform files

* Add SiPeed Longan Nano Onekeys

* Make quine compatible with other bootloaders

* Support builds with picolibc

* Add risc-v toolchain to arch and debian/ubuntu scripts
This commit is contained in:
Stefan Kerkmann 2021-10-18 07:23:20 +02:00 • committed by GitHub
parent 7e3ff206b8
commit e50867d52d
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GPG key ID: 4AEE18F83AFDEB23
31 changed files with 900 additions and 122 deletions
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31
quantum/mcu_selection.mk
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@ -541,6 +541,37 @@ ifneq (,$(filter $(MCU),STM32L412 STM32L422))
UF2_FAMILY ?= STM32L4
endif
ifneq ($(findstring GD32VF103, $(MCU)),)
# RISC-V
MCU = risc-v
# RISC-V extensions and abi configuration
MCU_ARCH = rv32imac
MCU_ABI = ilp32
MCU_CMODEL = medlow
## chip/board settings
# - the next two should match the directories in
# <chibios>/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)
MCU_FAMILY = GD32V
MCU_SERIES = GD32VF103
# Linker script to use
# - it should exist either in <chibios>/os/common/startup/RISCV-ECLIC/compilers/GCC/ld/
# or <keyboard_dir>/ld/
MCU_LDSCRIPT ?= GD32VF103xB
# Startup code to use
# - it should exist in <chibios>/os/common/startup/RISCV-ECLIC/compilers/GCC/mk/
MCU_STARTUP ?= gd32vf103
# Board: it should exist either in <chibios>/os/hal/boards/,
# <keyboard_dir>/boards/, or drivers/boards/
BOARD ?= SIPEED_LONGAN_NANO
USE_FPU ?= no
endif
ifneq (,$(filter $(MCU),at90usb162 atmega16u2 atmega32u2 atmega16u4 atmega32u4 at90usb646 at90usb647 at90usb1286 at90usb1287))
PROTOCOL = LUFA