• Is there any ETMs supporting data trace in the market?
    The manual of ETM tells that the ETM supports data trace. However, we checked the manual of Juno board and most recent Cortex A75 processors, and found that the data trace is not implemented. Currently...
  • Can I make ETM and PMU secure access only?
    ARMv8 manual says that we can make system register access to trace registers and PMU registers trap to EL3. However, ETM and PMU in Juno can be accessed through memory-mapping interface. Is there anyway...
  • How to check the enable status in ETM v3.3
    Hi all, I am trying to use the ETM on iMX53 qsb, which contains a Cortex-A8 processor. In the board, the trace result of the ETM is outputted to both ETB and TPIU via an ATB replicator, looks like the...
  • Accessing coresight debug and trace memory region in EL3 leads to stuck.
    The manual tells that I can use ETM in both self-host debugging and external debugging. With DStream and DS-5, the ETM works well. However, i find that i can not modify the tracing registers in DS-5,...
  • Juno A57 Core Runs Slower Than A53 Core
    Hi experts, Recently, I'm trying to evaluate the code execution time when using the A53 core and the A57 core. However, my result shows A53 core is much faster than the A57 core, which does not make...