From e50867d52d9c255570630a23514842749b45e4c1 Mon Sep 17 00:00:00 2001 From: Stefan Kerkmann Date: Mon, 18 Oct 2021 07:23:20 +0200 Subject: [Core] Add support for RISC-V builds and GD32VF103 MCU (#12508) * 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 --- tmk_core/common/chibios/bootloader.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'tmk_core/common/chibios/bootloader.c') diff --git a/tmk_core/common/chibios/bootloader.c b/tmk_core/common/chibios/bootloader.c index f9514ee5f3..5cadadeeeb 100644 --- a/tmk_core/common/chibios/bootloader.c +++ b/tmk_core/common/chibios/bootloader.c @@ -95,6 +95,28 @@ void enter_bootloader_mode_if_requested(void) { } } +#elif defined(GD32VF103) + +# define DBGMCU_KEY_UNLOCK 0x4B5A6978 +# define DBGMCU_CMD_RESET 0x1 + +__IO uint32_t *DBGMCU_KEY = (uint32_t *)DBGMCU_BASE + 0x0CU; +__IO uint32_t *DBGMCU_CMD = (uint32_t *)DBGMCU_BASE + 0x08U; + +__attribute__((weak)) void bootloader_jump(void) { + /* The MTIMER unit of the GD32VF103 doesn't have the MSFRST + * register to generate a software reset request. + * BUT instead two undocumented registers in the debug peripheral + * that allow issueing a software reset. WHO would need the MSFRST + * register anyway? Source: + * https://github.com/esmil/gd32vf103inator/blob/master/include/gd32vf103/dbg.h */ + *DBGMCU_KEY = DBGMCU_KEY_UNLOCK; + *DBGMCU_CMD = DBGMCU_CMD_RESET; +} + +void enter_bootloader_mode_if_requested(void) { /* Jumping to bootloader is not possible from user code. */ +} + #elif defined(KL2x) || defined(K20x) || defined(MK66F18) || defined(MIMXRT1062) // STM32_BOOTLOADER_DUAL_BANK // STM32_BOOTLOADER_ADDRESS /* Kinetis */ -- cgit v1.2.3