2021-02-22 00:54:31 +00:00
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#
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# Makefile fragment for STM32 MCUs.
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#
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# Create variables for the MCU name.
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MCU_SERIES_UPPER = $(shell echo $(MCU_SERIES) | tr '[:lower:]' '[:upper:]')
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CMSIS_MCU_LOWER = $(shell echo $(CMSIS_MCU) | tr '[:upper:]' '[:lower:]')
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# Configure location of stm32lib. Options are:
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# 1. default: use provided lib/stm32lib
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# 2. set STM32LIB_DIR to point to an stm32lib directory structure
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# 3. set STM32LIB_CMSIS_DIR to point to xxx/CMSIS/Device/ST/STM32<series>xx
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# and STM32LIB_HAL_DIR to point to xxx/STM32<series>xx_HAL_Driver
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ifneq ($(STM32LIB_CMSIS_DIR),)
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# Option 3
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STM32LIB_CMSIS_BASE = $(abspath $(STM32LIB_CMSIS_DIR))
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STM32LIB_CMSIS_ABS = $(STM32LIB_CMSIS_BASE)
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STM32LIB_HAL_BASE = $(abspath $(STM32LIB_HAL_DIR))
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STM32LIB_HAL_ABS = $(STM32LIB_HAL_BASE)
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else
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ifneq ($(STM32LIB_DIR),)
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# Option 2
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STM32LIB_VPATH = $(abspath $(STM32LIB_DIR))
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STM32LIB_FROM_HERE = $(STM32LIB_VPATH)
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else
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# Option 1
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STM32LIB_VPATH = lib/stm32lib
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STM32LIB_FROM_HERE = $(TOP)/$(STM32LIB_VPATH)
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endif
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STM32LIB_CMSIS_BASE = $(STM32LIB_VPATH)/CMSIS/STM32$(MCU_SERIES_UPPER)xx
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STM32LIB_CMSIS_ABS = $(STM32LIB_FROM_HERE)/CMSIS/STM32$(MCU_SERIES_UPPER)xx
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STM32LIB_HAL_BASE = $(STM32LIB_VPATH)/STM32$(MCU_SERIES_UPPER)xx_HAL_Driver
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STM32LIB_HAL_ABS = $(STM32LIB_FROM_HERE)/STM32$(MCU_SERIES_UPPER)xx_HAL_Driver
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endif
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STARTUP_FILE ?= $(STM32LIB_CMSIS_BASE)/Source/Templates/gcc/startup_$(CMSIS_MCU_LOWER).o
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SYSTEM_FILE ?= $(STM32LIB_CMSIS_BASE)/Source/Templates/system_stm32$(MCU_SERIES)xx.o
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# Basic Cortex-M flags.
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CFLAGS_CORTEX_M = -mthumb
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ifneq ($(BUILDING_MBOOT),1)
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# Select hardware floating-point support.
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SUPPORTS_HARDWARE_FP_SINGLE = 0
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SUPPORTS_HARDWARE_FP_DOUBLE = 0
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ifeq ($(CMSIS_MCU),$(filter $(CMSIS_MCU),STM32F765xx STM32F767xx STM32F769xx STM32H743xx STM32H750xx STM32H7A3xx STM32H7A3xxQ STM32H7B3xx STM32H7B3xxQ))
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CFLAGS_CORTEX_M += -mfpu=fpv5-d16 -mfloat-abi=hard
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SUPPORTS_HARDWARE_FP_SINGLE = 1
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SUPPORTS_HARDWARE_FP_DOUBLE = 1
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else
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2021-02-22 00:55:12 +00:00
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ifeq ($(MCU_SERIES),$(filter $(MCU_SERIES),f0 l0 wl))
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2021-02-22 00:54:31 +00:00
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CFLAGS_CORTEX_M += -msoft-float
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else
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CFLAGS_CORTEX_M += -mfpu=fpv4-sp-d16 -mfloat-abi=hard
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SUPPORTS_HARDWARE_FP_SINGLE = 1
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endif
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endif
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endif
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# Options for particular MCU series.
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CFLAGS_MCU_f0 = $(CFLAGS_CORTEX_M) -mtune=cortex-m0 -mcpu=cortex-m0
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CFLAGS_MCU_f4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4
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CFLAGS_MCU_f7 = $(CFLAGS_CORTEX_M) -mtune=cortex-m7 -mcpu=cortex-m7
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CFLAGS_MCU_g4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4
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CFLAGS_MCU_l0 = $(CFLAGS_CORTEX_M) -mtune=cortex-m0plus -mcpu=cortex-m0plus
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CFLAGS_MCU_l4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4
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CFLAGS_MCU_h7 = $(CFLAGS_CORTEX_M) -mtune=cortex-m7 -mcpu=cortex-m7
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CFLAGS_MCU_wb = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4
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2021-02-22 00:55:12 +00:00
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CFLAGS_MCU_wl = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4
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