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  • ARMv7 how a program can check whether it is in secure state or not ?

    I think all is in the title.

    When in secure, reading the SCR register with MRC will succeed. But in non secure state, the MRC fails and I don't get any undef or abort.

    Is it my mistake here ? Or it can be "sensed" differently without crashing ?…

  • ARMv7: How to set SP in secure and non secure mode ?

    Hello,

    I'm working on Raspberry PI2, ARMv7 and now specifically trying the secure modes.

    I managed to get the PI start in secure state, then here I can set the SP for all the modes I intend to use in secure state, like IRQ, SVC, etc.

    But I also would…