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about arm boot up

Q L
Note: This was originally posted on 25th July 2012 at http://forums.arm.com

I am coding on a bare computer, and I want to know the process to boot up an arm core. Such as set smp mode, init stack, and so on.
Could anyone provide me some reference or some guide?

Thanks.
  • Note: This was originally posted on 26th July 2012 at http://forums.arm.com

    Generally, when you want to initialise a microcontrolleror a soc there are few things that are necessary to prepare before writing yourcode. I general, this is provided by some IDE's like Keil uvision 4 for the siliconchips

    that they support. Of course you can write yours and here's what needs to bedone: Initialise the stack, the heap,  configure (if possible) your mode, define thememory location, initialise the vectors, write (if needed) your exceptionhandlers,

    branch to a system initialisation (this is where you initialise chip specific peripherals),branch to main. The init can vary a lot from a processor to another because thenew technologies introduce new features. The example above is for cortex m3based microcontrollers but you can surely adapt this startup for some more sophisticatedarchitecture an IC's.


    Hope it helps.

  • Note: This was originally posted on 2nd August 2012 at http://forums.arm.com

    Which ARM core/processor you are trying to boot-up?
    Depending on the ARM core version, you can decie about SMP/AMP is supported or not.
    Multicore/Multiprocessing is supported in Cortex-A processor series.

    Depending on the Processor and your board architecture, we can do the following during bootup:
    Booting Stages. (Single Stage or Multi Stage)
    Memory Map
    Exception/Vector Table configuration.
    Exception Handler Stack initialization
    HW initialization (Memory config etc...)
    OS initialization (if used)
    Tasks