title: What is the booting process for ARM?
body: <p>As we know, for X86 architecture: After we press the power button, machine starts to execute code at 0xFFFFFFF0, then it starts to execute code in BIOS in order to do hardware initialization. After BIOS execution, it use bootloader to load the OS image into memory. At the end, OS code starts to run. 
  For ARM architecture, what is the booting process after use press the power button?
  Thanks!</p>