3 ms·

Remember that the RPi SoC isn't primarily ARM. There's a multistage process to boot the VPU/GPU which in turn runs the ARM as a sort of child.

• goferito 6y ago
  Is that boot process closed source?
  • pinewurst 6y ago
    Yes - there are people who've figured out their own boot processes, but everyone really uses the default Broadcom one.