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Loading normal world on ARMv7 Cortex A8 processor

Syed Rafiul Hussain
Note: This was originally posted on 12th March 2012 at http://forums.arm.com

Hi,

I would like to load android OS as normal world on ARMv7 Cortex A8 processor. I already have the ubuntu 11.10 as secure world on the same processor. I would be grateful if anyone can help me in this regard.

Thanks.
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  • Arm Employee Badge
    Note: This was originally posted on 14th March 2012 at http://forums.arm.com


    Seems nobody is interested to let us know how to do that !!!


    More likely, nobody knows.

    The TrustZone Secure/Normal worlds aren't designed to do virtualization in that way.  In a properly implemented system, they allow secure access to hardware without needing to trust the whole OS.  Only the code running in the Secure world can access the secure hardware.

    Cortex-A15 and -A7 have virtualization extensions (including a new Hypervisor mode and registers) but they still require hypervisior code which is a significant piece of work.
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  • Arm Employee Badge
    Note: This was originally posted on 14th March 2012 at http://forums.arm.com


    Seems nobody is interested to let us know how to do that !!!


    More likely, nobody knows.

    The TrustZone Secure/Normal worlds aren't designed to do virtualization in that way.  In a properly implemented system, they allow secure access to hardware without needing to trust the whole OS.  Only the code running in the Secure world can access the secure hardware.

    Cortex-A15 and -A7 have virtualization extensions (including a new Hypervisor mode and registers) but they still require hypervisior code which is a significant piece of work.
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