RIOT/cpu/cortexm_common/Makefile.features

FEATURES_PROVIDED += arch_32bit
FEATURES_PROVIDED += arch_arm
FEATURES_PROVIDED += cpu_core_cortexm
FEATURES_PROVIDED += periph_pm
FEATURES_PROVIDED += cortexm_svc
FEATURES_PROVIDED += cpp
FEATURES_PROVIDED += cpu_check_address
FEATURES_PROVIDED += ssp

# cortex-m4f and cortex-m7 provide FPU support
ifneq (,$(filter $(CPU_CORE),cortex-m4f cortex-m7))
  FEATURES_PROVIDED += cortexm_fpu
endif

# Set CPU_ARCH depending on the CPU_CORE
ifeq ($(CPU_CORE),cortex-m0)
  CPU_ARCH := armv6m
else ifeq ($(CPU_CORE),cortex-m0plus)
  CPU_ARCH := armv6m
else ifeq ($(CPU_CORE),cortex-m3)
  CPU_ARCH := armv7m
else ifeq ($(CPU_CORE),cortex-m4)
  CPU_ARCH := armv7m
else ifeq ($(CPU_CORE),cortex-m4f)
  CPU_ARCH := armv7m
else ifeq ($(CPU_CORE),cortex-m7)
  CPU_ARCH := armv7m
else ifeq ($(CPU_CORE),cortex-m23)
  CPU_ARCH := armv8m
else
  $(error Unkwnown cortexm core: $(CPU_CORE))
endif