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-rw-r--r--tmk_core/common/chibios/bootloader.c22
-rw-r--r--tmk_core/common/chibios/chibios_config.h19
-rw-r--r--tmk_core/common/chibios/eeprom_stm32_defs.h6
-rw-r--r--tmk_core/common/chibios/flash_stm32.c5
-rw-r--r--tmk_core/common/chibios/gd32v_compatibility.h120
-rw-r--r--tmk_core/common/chibios/syscall-fallbacks.c6
6 files changed, 176 insertions, 2 deletions
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 */
diff --git a/tmk_core/common/chibios/chibios_config.h b/tmk_core/common/chibios/chibios_config.h
index f065948028..ad2f808a95 100644
--- a/tmk_core/common/chibios/chibios_config.h
+++ b/tmk_core/common/chibios/chibios_config.h
@@ -39,6 +39,25 @@
# endif
#endif
+// GD32 compatibility
+#if defined(MCU_GD32V)
+# define CPU_CLOCK GD32_SYSCLK
+
+# if defined(GD32VF103)
+# define USE_GPIOV1
+# define USE_I2CV1
+# define PAL_MODE_ALTERNATE_OPENDRAIN PAL_MODE_GD32_ALTERNATE_OPENDRAIN
+# define PAL_MODE_ALTERNATE_PUSHPULL PAL_MODE_GD32_ALTERNATE_PUSHPULL
+# endif
+#endif
+
+#if defined(GD32VF103)
+/* This chip has the same API as STM32F103, but uses different names for literally the same thing.
+ * As of 4.7.2021 QMK is tailored to use STM32 defines/names, for compatibility sake
+ * we just redefine the GD32 names. */
+# include "gd32v_compatibility.h"
+#endif
+
// teensy compatibility
#if defined(MCU_KINETIS)
# define CPU_CLOCK KINETIS_SYSCLK_FREQUENCY
diff --git a/tmk_core/common/chibios/eeprom_stm32_defs.h b/tmk_core/common/chibios/eeprom_stm32_defs.h
index 3499796264..66904f247f 100644
--- a/tmk_core/common/chibios/eeprom_stm32_defs.h
+++ b/tmk_core/common/chibios/eeprom_stm32_defs.h
@@ -18,7 +18,7 @@
#include <hal.h>
#if !defined(FEE_PAGE_SIZE) || !defined(FEE_PAGE_COUNT)
-# if defined(STM32F103xB) || defined(STM32F042x6)
+# if defined(STM32F103xB) || defined(STM32F042x6) || defined(GD32VF103C8) || defined(GD32VF103CB)
# ifndef FEE_PAGE_SIZE
# define FEE_PAGE_SIZE 0x400 // Page size = 1KByte
# endif
@@ -45,7 +45,9 @@
#if !defined(FEE_MCU_FLASH_SIZE)
# if defined(STM32F042x6)
# define FEE_MCU_FLASH_SIZE 32 // Size in Kb
-# elif defined(STM32F103xB) || defined(STM32F072xB) || defined(STM32F070xB)
+# elif defined(GD32VF103C8)
+# define FEE_MCU_FLASH_SIZE 64 // Size in Kb
+# elif defined(STM32F103xB) || defined(STM32F072xB) || defined(STM32F070xB) || defined(GD32VF103CB)
# define FEE_MCU_FLASH_SIZE 128 // Size in Kb
# elif defined(STM32F303xC) || defined(STM32F401xC)
# define FEE_MCU_FLASH_SIZE 256 // Size in Kb
diff --git a/tmk_core/common/chibios/flash_stm32.c b/tmk_core/common/chibios/flash_stm32.c
index 35fb0eebdb..72c41b8b78 100644
--- a/tmk_core/common/chibios/flash_stm32.c
+++ b/tmk_core/common/chibios/flash_stm32.c
@@ -23,6 +23,11 @@
# define FLASH_SR_WRPERR FLASH_SR_WRPRTERR
#endif
+#if defined(MCU_GD32V)
+/* GigaDevice GD32VF103 is a STM32F103 clone at heart. */
+# include "gd32v_compatibility.h"
+#endif
+
#if defined(STM32F4XX)
# define FLASH_SR_PGERR (FLASH_SR_PGSERR | FLASH_SR_PGPERR | FLASH_SR_PGAERR)
diff --git a/tmk_core/common/chibios/gd32v_compatibility.h b/tmk_core/common/chibios/gd32v_compatibility.h
new file mode 100644
index 0000000000..f4dcfd8c55
--- /dev/null
+++ b/tmk_core/common/chibios/gd32v_compatibility.h
@@ -0,0 +1,120 @@
+/* Copyright 2021 QMK
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+/* GD32VF103 has the same API as STM32F103, but uses different names for literally the same thing.
+ * As of 23.7.2021 QMK is tailored to use STM32 defines/names, for compatibility sake
+ * we just redefine the GD32 names. */
+
+/* Close your eyes kids. */
+#define MCU_STM32
+
+/* AFIO redefines */
+#define MAPR PCF0
+#define AFIO_MAPR_USART1_REMAP AFIO_PCF0_USART0_REMAP
+#define AFIO_MAPR_USART2_REMAP AFIO_PCF0_USART1_REMAP
+#define AFIO_MAPR_USART3_REMAP_PARTIALREMAP AFIO_PCF0_USART2_REMAP_PARTIALREMAP
+#define AFIO_MAPR_USART3_REMAP_FULLREMAP AFIO_PCF0_USART2_REMAP_FULLREMAP
+
+/* DMA redefines. */
+#define STM32_DMA_STREAM(stream) GD32_DMA_STREAM(stream)
+#define STM32_DMA_STREAM_ID(peripheral, channel) GD32_DMA_STREAM_ID(peripheral - 1, channel - 1)
+#define STM32_DMA_CR_DIR_M2P GD32_DMA_CTL_DIR_M2P
+#define STM32_DMA_CR_PSIZE_WORD GD32_DMA_CTL_PWIDTH_WORD
+#define STM32_DMA_CR_MSIZE_WORD GD32_DMA_CTL_MWIDTH_WORD
+#define STM32_DMA_CR_MINC GD32_DMA_CTL_MNAGA
+#define STM32_DMA_CR_CIRC GD32_DMA_CTL_CMEN
+#define STM32_DMA_CR_PL GD32_DMA_CTL_PRIO
+#define STM32_DMA_CR_CHSEL GD32_DMA_CTL_CHSEL
+#define cr1 ctl0
+#define cr2 ctl1
+#define cr3 ctl2
+#define dier dmainten
+
+/* ADC redefines */
+#if HAL_USE_ADC
+# define STM32_ADC_USE_ADC1 GD32_ADC_USE_ADC0
+
+# define smpr1 sampt0
+# define smpr2 sampt1
+# define sqr1 rsq0
+# define sqr2 rsq1
+# define sqr3 rsq2
+
+# define ADC_SMPR2_SMP_AN0 ADC_SAMPT1_SMP_SPT0
+# define ADC_SMPR2_SMP_AN1 ADC_SAMPT1_SMP_SPT1
+# define ADC_SMPR2_SMP_AN2 ADC_SAMPT1_SMP_SPT2
+# define ADC_SMPR2_SMP_AN3 ADC_SAMPT1_SMP_SPT3
+# define ADC_SMPR2_SMP_AN4 ADC_SAMPT1_SMP_SPT4
+# define ADC_SMPR2_SMP_AN5 ADC_SAMPT1_SMP_SPT5
+# define ADC_SMPR2_SMP_AN6 ADC_SAMPT1_SMP_SPT6
+# define ADC_SMPR2_SMP_AN7 ADC_SAMPT1_SMP_SPT7
+# define ADC_SMPR2_SMP_AN8 ADC_SAMPT1_SMP_SPT8
+# define ADC_SMPR2_SMP_AN9 ADC_SAMPT1_SMP_SPT9
+
+# define ADC_SMPR1_SMP_AN10 ADC_SAMPT0_SMP_SPT10
+# define ADC_SMPR1_SMP_AN11 ADC_SAMPT0_SMP_SPT11
+# define ADC_SMPR1_SMP_AN12 ADC_SAMPT0_SMP_SPT12
+# define ADC_SMPR1_SMP_AN13 ADC_SAMPT0_SMP_SPT13
+# define ADC_SMPR1_SMP_AN14 ADC_SAMPT0_SMP_SPT14
+# define ADC_SMPR1_SMP_AN15 ADC_SAMPT0_SMP_SPT15
+
+# define ADC_SQR3_SQ1_N ADC_RSQ2_RSQ1_N
+#endif
+
+/* FLASH redefines */
+#if defined(EEPROM_ENABLE)
+# define SR STAT
+# define FLASH_SR_BSY FLASH_STAT_BUSY
+# define FLASH_SR_PGERR FLASH_STAT_PGERR
+# define FLASH_SR_EOP FLASH_STAT_ENDF
+# define FLASH_SR_WRPRTERR FLASH_STAT_WPERR
+# define FLASH_SR_WRPERR FLASH_SR_WRPRTERR
+# define FLASH_OBR_OPTERR FLASH_OBSTAT_OBERR
+# define AR ADDR
+# define CR CTL
+# define FLASH_CR_PER FLASH_CTL_PER
+# define FLASH_CR_STRT FLASH_CTL_START
+# define FLASH_CR_LOCK FLASH_CTL_LK
+# define FLASH_CR_PG FLASH_CTL_PG
+# define KEYR KEY
+#endif
+
+/* Serial USART redefines. */
+#if HAL_USE_SERIAL
+# if !defined(SERIAL_USART_CR1)
+# define SERIAL_USART_CR1 (USART_CTL0_PCEN | USART_CTL0_PM | USART_CTL0_WL) // parity enable, odd parity, 9 bit length
+# endif
+# if !defined(SERIAL_USART_CR2)
+# define SERIAL_USART_CR2 (USART_CTL1_STB_1) // 2 stop bits
+# endif
+# if !defined(SERIAL_USART_CR3)
+# define SERIAL_USART_CR3 0x0
+# endif
+# define USART_CR3_HDSEL USART_CTL2_HDEN
+# define CCR CHCV
+#endif
+
+/* SPI redefines. */
+#if HAL_USE_SPI
+# define SPI_CR1_LSBFIRST SPI_CTL0_LF
+# define SPI_CR1_CPHA SPI_CTL0_CKPH
+# define SPI_CR1_CPOL SPI_CTL0_CKPL
+# define SPI_CR1_BR_0 SPI_CTL0_PSC_0
+# define SPI_CR1_BR_1 SPI_CTL0_PSC_1
+# define SPI_CR1_BR_2 SPI_CTL0_PSC_2
+#endif
diff --git a/tmk_core/common/chibios/syscall-fallbacks.c b/tmk_core/common/chibios/syscall-fallbacks.c
index 739017ae1d..4569879c7c 100644
--- a/tmk_core/common/chibios/syscall-fallbacks.c
+++ b/tmk_core/common/chibios/syscall-fallbacks.c
@@ -18,6 +18,12 @@
#include <sys/stat.h>
#include <sys/types.h>
+/* To compile the ChibiOS syscall stubs with picolibc
+ * the _reent struct has to be defined. */
+#if defined(USE_PICOLIBC)
+struct _reent;
+#endif
+
#pragma GCC diagnostic ignored "-Wmissing-prototypes"
__attribute__((weak, used)) int _open_r(struct _reent *r, const char *path, int flag, int m) {