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USIM on OMAP4460 GP

Sergey Matyukevich
Intellectual 340 points

Hello,

Could you please clarify if it is possible to use USIM inteface on OMAP4460 GP SoC ?


Thanks,
Sergey

  • 0
    TI__Guru**** 161600 points

    Hello Sergey,

    As per OMAP44xx Addendum there is a USIM module inside the device. So it should be possible to use it. Also looking at android source code, the interface is initialized in the mach-omap2 folder (clocks, board file, etc..)

    The document I referred to above requires you to have NDA agreement in order to obtain it.


    Best Regards,

    Yordan

  • 0 in reply to Yordan Kovachev
    Intellectual 340 points

    Hello Yordan,

    As per OMAP4460 Addendum there are some restrictions for security-related components on OMAP4460 GP SoC. For instance, USIM belongs to Group 2 (in terms of L4-CFG firewall configuration). However it looks like in GP devices, no one has access to Group 2. So my question is: is it literally impossible to use USIM module on OMAP4460 GP Soc even if we have the complete control over h/w design of the board ?

    Thanks,
    Sergey

  • 0 in reply to Sergey Matyukevich
    TI__Guru**** 161600 points

    Hi,

    Just checked the ti hw specification for omap4460:


    "Note: USIM is not accessible on GP, that is why default values is secure and no debug"

    That is exactly your observation "no one has access to Group2". Group2 from L4 Firewalls AP registers configuration is RO (read only) and cannot be modified. So you cannot access it.
    It seems that interface is present, but  not accessible on GP devices.

    Sorry for misleading you with my previous post.

    Best Regards,

    Yordan