ARM Versions

• ARMv1
• ARMv2
• ARMv3
• ARMv4
• ARMv5
• ARMv6
• ARMv7
• ARMv8
• ARMv9

Boot Sequence

Booting a bare-metal system

When the core has been reset, it will commence execution at the location of the reset vector in the exception vector table (at either address 0x00000000 or 0xFFFF0000)

• In a multi-core system, enable non-primary cores to sleep

• Initialize exception vectors.

• Initialize the memory system, including the MMU.

• Initialize core mode stacks and registers.

• Initialize any critical I/O devices.

• Perform any necessary initialization of NEON or VFP.

• Enable interrupts.

• Change core mode or state.

• Handle any set-up required for the Secure world.

• Call the main() application.