These values are accepted by --cpu:
stm32h533stm32h563(default)stm32u585stm32l552lpc55s69mcxw71cmcxn947rw612— NXP RW612 (Cortex-M33 + ELS / PKA crypto offload)nrf5340nrf54lm20rp2350pic32ck
You can also print the list directly from the executable:
build/m33mu --cpu listor:
build/m33mu --cpu ?Use the CPU profile that matches the target firmware's memory map and peripheral set. If you are bringing up a new firmware image and are unsure which target model to use, start from the exact MCU family the firmware was built for and then confirm flash/RAM layout and required peripherals.