• Cannot access EL1 resources from EL3 or secure world on armv8.

    The working secerio is that I'm testing OP-TEE on a Hikey board(Cortex-A53, armv8), and they use arm-trusted-firmware(see https://github.com/linaro-swg/arm-trusted-firmware) to be the monitor running in EL3.

    I'm trying to access some resources in EL1…

  • Trustzone and Hardware virtualization support

    Hello,

    I am looking for a development board that has an open Trustzone and hardware virtualization support. Do the Juno boards support this?

    Looking around the ARM A72/57/53 chips all support Arm Trustzone and have hardware virtualization support, however…

  • SMP to suspend an individual core with security OS

    Hi All,

    a SMP architecture, like CA53-4core-mp, with a secure OS running at aa32 secure state.

    how to implement a suspend/resume flow on a individual core?

    TRM only mentions about how to clean cache and off-line from smp

    But how to do a cache flush through…