• Aarch32 app performance on ARMv8a device
    Hi , I am running aarch32 app in ARMv8a( cortex-a57 ) device.  The performance reports ( using gettimeofday() utility ), showing  large spikes on random calls. But the same app on ARMv7a( cortex-a15 ...
  • Hello, my question is about watchpoint.
    When I set a on-chip breakpoint with MMU enabled, virtual address is 0xcc000000 ( real physical address is 0xbb000000)for example. Once the MMU map changed, when the breakpoint would be hit, new virtual...
  • Cortex M4, setting HW watchpoints?
    I haven't been able to get a watchpoint to work. I'm playing with an STM32F4 series device and I'm using Atollic TrueSTUDIO for debugging. I'd like to use a function for setting up a watchpoint, and...
  • generic timer difference armv8a and cortex-a53
    ARMv8-A Architecture Reference Manual written An EL1 physical timer. An EL2 physical timer. An EL3 physical timer. A virtual timer. but, Cortea-A53 Technical Reference Manual written A Non-secure EL1...
  • Getting started with security software for ARMv8A based platforms
    You may have seen that ARM has been developing some low level trusted firmware to provide reference code that supports Secure World software on the latest v8A technology based chips.   The software is...