Given the limited information provided, my best guess is that there is missing initialization, possibly a bad memory configuration; but the problem could be somewhere else.
timer interrupt not return
I just port azure RTOS SMP to Renesas MPU cortex-a53X2, it can run into timer interrupt ISR, but it can not return.
it stop in _tx_timer_interrupt(), not return. could you give me some advice.
You may also need to set up an actual hardware timer to drive the periodic timer that ThreadX requires. Note that our example projects for A5x/A35 on github all use the simulated timer provided by the ARM FVP simulator. You may want to ask Renesas for guidance on getting a hardware timer running.
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