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  • Xen/dom0 on Juno

    Hey all,

    I have been playing around with Xen and Dom0 on a Juno r0 board. Currently dom0 is failing to initailize USB. This is an issue because the rootfs depends on the usb.

    usb 1-1: new high-speed USB device number 2 using ehci-platform

    usb 1-1: device…

  • Issue of Building the OpenEmbedded Filesysytem from Source for Juno

    Hi , ,

     

    I'm currently using a Juno r1 board and I'm running the Linaro's deliverables on my board. 

    Recently I want to build the OpenEmbedded system by myself so I checked the instruction. However, after I finished the…

  • How to Get the PA instead of IPA from NS OS Kernel Module of an AArch64 device?

    Hi experts,

    Recently I want to conduct one secure-related scanning in TrustZone for some NS kernel memory.

    To do this, I need at first reporting the PA of the memory from NS kernel. My idea is developing a kernel module to achieve the goal.

    I write the 

    …

  • Is OPTEE_OS for Juno using 32-bit arch or 64-bit arch?

    Hi experts,

     

    I'm wondering do you compile the OPTEE_OS in this instruction as arm32 or AArch64? In which script do you set the compiler for the secure OS? ( I checked the file build-optee-os.sh while I find the file exports both compilers so I'm not…

  • Juno r1 Shareability Memory Attributes

    Hi experts,

     

    I'm using a Juno r1 board for some cache-related research experiment so I'm studying the related memory attributes such as cacheability and shareability.

     

    I found the manual mentioned that: " the division between inner and outer is…

  • Multicore Platform General Purpose Registers

    Hi, experts ,

    I'm wondering for the multicore ARM architecture, are all CPU cores sharing one set of general purpose registers (X0 - X30) or each CPU core has its separate registers? My feeling is that each core has its own…

  • How to use the external debugging interface in Juno board?

    Hi all,

    I am trying to use one Cortex-A57 (debugger) core to debug a Cortex-A53 core (target) on Juno board. According to the armv8 architecture manual, i may halt the the target and use EDITR instruction to force the target execute instructions. So,…