• Enter Hypervisor Mode on ARMv7 through Kernel Module
    I am trying to write a kernel module in C to bring the system in the hypervisor mode. The module is for a router, which is running OpenWrt. The architecture is ARMv7. When I load my module with insmod...
  • Switching from AARCH64 to AARCH32
    Hi, We are trying to switch from AARCh64 to AARCH32 using the following command. sudo su cd /root schroot  -c armhf-trusty But it says command not found. We are using munimal version of AARCH64 from linaro...
  • 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...
  • How to run my own trusted firmware BL32 on juno r2
    Hi, I am trying to use arm trusted firmware with my own BL32 (with 0xFF000000 entry point as specified). I want BL31 switch to my secure world that generate smc (aftersome init) to switch to normal...
  • How to understand AArch64 register 'Operation' column for 'Direct access to internal memory' in Cortex -A53?
    I'm reading "ARM® Cortex®-A53 MPCore Processor Technical Reference Manual". And, in 6.7 Direct access to internal memory part (P.357), there is a problem to understand what is the meaning of AArch64...