HFXO during of the simulation

Gentlemen!
I use EFM32G880F128. I try to simulate my program.
I set HFXO (High Frequency quartz oscillator) as clock for core, TIMER0.
Unfortunately the TIMER0 does not count (TIMER0_CNT stay 0).

There are some questions with the problem:
1. Is it possible to use HFXO during of the simulation?
(CMU_STATUS = 0, I forbid the check of quartz readiness so the loop
was unfinite during of the simulation).
2. Could I determine that HFXO is ready during of the simulation?

And one more question:
3. How can I control of the GPIO during of the simulation - it stay in 0 despite of
setting 1?