RIOT/cpu/stm32/Makefile.include

CFLAGS += -DCPU_FAM_STM32$(call uppercase_and_underscore,$(CPU_FAM))

# For stm32 cpu's we use the generic stm32.ld linker script
LINKER_SCRIPT ?= stm32.ld

# Include riotboot specific variables
include $(RIOTCPU)/stm32/stm32_riotboot.mk

# Compute ROM_LEN and RAM_LEN
include $(RIOTCPU)/stm32/stm32_mem_lengths.mk
KB := 1024
ROM_LEN_K := $(shell echo $(ROM_LEN) | sed 's/K//')
RAM_LEN_K := $(shell echo $(RAM_LEN) | sed 's/K//')

ifneq (,$(filter w%,$(CPU_FAM)))
  ifneq (,$(CPU2_RAM_LEN))
    # adjust RAM_LEN and ROM_LEN according to CPU2 RAM_LEN and ROM_LEN
    CPU2_RAM_LEN_K := $(shell echo $(CPU2_RAM_LEN) | sed 's/K//')
    RAM_LEN := $(shell echo $$(( ($(RAM_LEN_K) - $(CPU2_RAM_LEN_K) ) * $(KB) )))
  else
    RAM_LEN := $(shell echo $$(( $(RAM_LEN_K) * $(KB) )) )
  endif
  ifneq (,$(CPU2_ROM_LEN))
    CPU2_ROM_LEN_K := $(shell echo $(CPU2_ROM_LEN) | sed 's/K//')
    FLASHSIZE := $(shell echo $$(( ($(ROM_LEN_K) - $(CPU2_ROM_LEN_K) )* $(KB) )) )
    ROM_LEN := $(shell echo $$(( ($(ROM_LEN_K) - $(CPU2_ROM_LEN_K) ) ))K)
  else
    FLASHSIZE := $(shell echo $$(( $(ROM_LEN_K) * $(KB) )) )
  endif
else
  FLASHSIZE := $(shell echo $$(( $(ROM_LEN_K) * $(KB) )) )
  RAM_LEN := $(shell echo $$(( $(RAM_LEN_K) * $(KB) )) )
endif

# Get CPU_LINE_ variable
include $(RIOTCPU)/stm32/stm32_line.mk
CPU_LINE ?= $(shell echo $(CPU_MODEL) | cut -c -9 | tr 'a-z-' 'A-Z_')xx

ifeq ($(CONFIG_RDP0),y)
  CFLAGS += -DCONFIG_STM32_RDP=0
endif
ifeq ($(CONFIG_RDP1),y)
  CFLAGS += -DCONFIG_STM32_RDP=1
endif
ifeq ($(CONFIG_RDP2),y)
  CFLAGS += -DCONFIG_STM32_RDP=2
endif

# Set CFLAGS
CFLAGS += -D$(CPU_LINE) -DCPU_LINE_$(CPU_LINE)
CFLAGS += -DSTM32_FLASHSIZE=$(FLASHSIZE)U

info-stm32:
	@$(COLOR_ECHO) "CPU: $(CPU_MODEL)"
	@$(COLOR_ECHO) "\tLine: $(CPU_LINE)"
	@$(COLOR_ECHO) "\tPin count:\t$(STM32_PINS)"
	@$(COLOR_ECHO) "\tROM size:\t$(ROM_LEN) ($(FLASHSIZE) Bytes)"
	@$(COLOR_ECHO) "\tRAM size:\t$(RAM_LEN_K)KiB"

ifneq (,$(CCMRAM_LEN))
  LINKFLAGS += $(LINKFLAGPREFIX)--defsym=_ccmram_length=$(CCMRAM_LEN)
endif
ifneq (,$(SRAM4_LEN))
  LINKFLAGS += $(LINKFLAGPREFIX)--defsym=_sram4_length=$(SRAM4_LEN)
endif

# if the board uses a FMC RAM, all 4 heaps have to be used even if
# some of them are not available
ifneq (,$(filter periph_fmc_sdram periph_fmc_nor_sram,$(USEMODULE)))
  ifneq (,$(FMC_RAM_LEN))
    LINKFLAGS += $(LINKFLAGPREFIX)--defsym=_fmc_ram_addr=$(FMC_RAM_ADDR)
    LINKFLAGS += $(LINKFLAGPREFIX)--defsym=_fmc_ram_len=$(FMC_RAM_LEN)
    CFLAGS += -DCPU_HAS_FMC_RAM=1
    CFLAGS += -DNUM_HEAPS=4
  endif
endif

VECTORS_O ?= $(BINDIR)/stm32_vectors/$(CPU_LINE).o
VECTORS_FILE = $(RIOTCPU)/stm32/vectors/$(CPU_LINE).c
BUILDDEPS += $(VECTORS_FILE)

# CPU_LINE must be exported only when building the vectors object file since
# the source filename to be built is built from the CPU_LINE content.
$(call target-export-variables,$(VECTORS_O),CPU_LINE)

# Add this define to skip the inclusion of the system_stm32xxxx.h header files
# which are only used for STM32 system includes and not of interest for RIOT.
CFLAGS += -D__SYSTEM_STM32$(call uppercase,$(CPU_FAM))XX_H
# C0, G0, H7, L5 and U5 use SYSTEM_STM32..XX_H instead
CFLAGS += -DSYSTEM_STM32$(call uppercase,$(CPU_FAM))XX_H

ifneq (,$(filter STM32F030x4 STM32MP157Cxx,$(CPU_LINE)))
  STM32CMSIS_INCLUDE_DIR = $(RIOTCPU)/stm32/include/vendor/cmsis/$(CPU_FAM)/Include
else
  STM32CMSIS_INCLUDE_DIR = $(BUILD_DIR)/stm32/cmsis/$(CPU_FAM)/Include
  STM32FAM_INCLUDE_FILE = $(STM32CMSIS_INCLUDE_DIR)/stm32$(CPU_FAM)xx.h
  INCLUDES += -I$(STM32CMSIS_INCLUDE_DIR)
endif

# Fetch all CMSIS headers using the package mechanism. This rule is called all
# the time to ensure it's correctly updated when versions in the packages are
# updated.
$(STM32FAM_INCLUDE_FILE): FORCE $(CLEAN)
	$(Q)+$(MAKE) -f $(RIOTBASE)/cpu/stm32/Makefile.cmsis

# The vectors source file requires the family headers to be fetched before since
# it's generated from the CMSIS content
$(VECTORS_FILE): $(STM32FAM_INCLUDE_FILE)
	$(Q)$(RIOTBASE)/cpu/stm32/dist/irqs/gen_vectors.py $(STM32CMSIS_INCLUDE_DIR) $(CPU_LINE)

ifeq (,$(filter STM32MP157Cxx STM32F030x4,$(CPU_LINE)))
  # IRQs of STM32F030x4 and STM32MP157Cxx lines are not available in the CMSIS
  # package so they are hardcoded in RIOTs codebase.
  # For other lines, the IRQs are automatically generated once from the whole
  # list of CMSIS headers available in a given family
  STM32IRQS_INCLUDE_FILE = $(RIOTCPU)/stm32/include/irqs/$(CPU_FAM)/irqs.h
  BUILDDEPS += $(STM32IRQS_INCLUDE_FILE)
endif

# The IRQ header for a given family requires the family headers to be fetched
# before since it's generated from all CMSIS content of that family
$(STM32IRQS_INCLUDE_FILE): $(STM32FAM_INCLUDE_FILE)
	$(Q)$(RIOTBASE)/cpu/stm32/dist/irqs/gen_irqs.py $(STM32CMSIS_INCLUDE_DIR) $(CPU_FAM)

# Include clock configuration directory
INCLUDES += -I$(RIOTCPU)/stm32/include/clk

include $(RIOTMAKE)/arch/cortexm.inc.mk