We are very interested in utilizing the Cortex R5 core available on NX, but have a few questions after reading " Jetson Sensor Processing Engine (SPE)" documentation:
- Does this core have an FP unit?
- Which toolchain we can use to compile the code for it? Documentation talks about very old cross compilation toolchain available on https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q3-update, however we would like to compile natively on NX board itself. Can we use default GCC available in Ubuntu “gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)” or we need to build gcc-arm-embedded/4.8/4.8-2014-q3-update to run natively on NX linux?
- How we can start Cortex R5 firmware on NX DevKIt? From what I see in the documentation, the firmware need to be flashed to “spe-fw” partition (on eMMC which we don’t have on NX DevKit)? Where should we put the F/W image on NX DevKit for it to be used? Which bootloader loads this F/W to Cortex R5 core and starts it? Is there any way to reload a different F/W from inside the linux system?
Thanks in advance!