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Boot ROM Code for ARM Cortex A9 MP Core SoC

tushark tushark
Note: This was originally posted on 5th August 2011 at http://forums.arm.com

Hi,

I am working on ARM Cortex A9 MP Core SoC. As a part of software development, I need to understand how booting takes place in case ARM Cortex A9 considering the reset vector. I wanted to know more about the Boot ROM code which could be part of SoC. Can I get details / documentation / reference code about the Boot ROM code for ARM Cortex A9? Also I would like to know what are the steps involved in general booting sequence right from the RESET/Power ON till it loads the kernel.

Thanks & Regards,
TK
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  • Note: This was originally posted on 8th August 2011 at http://forums.arm.com

    Thanks Vaibhav for the information.
    I have one more question related to booting. As mentioned the execution of instructions after rest will start from address 0 or 0xFFFF0000. So If I am having NOR flash in my system, then do I need to map NOR flash to reset vector address? As NOR supports XIP, so all the initialization code should be placed in NOR at  address 0 or 0xFFFF0000 in assembly code. Is this understanding correct?

    Thanks,
    Tushark
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  • Note: This was originally posted on 8th August 2011 at http://forums.arm.com

    Thanks Vaibhav for the information.
    I have one more question related to booting. As mentioned the execution of instructions after rest will start from address 0 or 0xFFFF0000. So If I am having NOR flash in my system, then do I need to map NOR flash to reset vector address? As NOR supports XIP, so all the initialization code should be placed in NOR at  address 0 or 0xFFFF0000 in assembly code. Is this understanding correct?

    Thanks,
    Tushark
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