ubootstrategy: from shell to u-boot by reboot instead of powercycle

[nefethael]

Signed-off-by: Vincent Prince vincent.prince.fr@gmail.com

[codecov-io]

Codecov Report

Merging #240 into master will decrease coverage by <.1%.
The diff coverage is 0%.

@@           Coverage Diff            @@
##           master    #240     +/-   ##
========================================
- Coverage    55.1%   55.1%   -0.1%     
========================================
  Files         105     105             
  Lines        6218    6221      +3     
========================================
  Hits         3431    3431             
- Misses       2787    2790      +3

Impacted Files	Coverage Δ
labgrid/strategy/ubootstrategy.py	47.3% <0%> (-4.1%)	⬇️

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[jluebbe]

This way, the system state in the bootloader can differ depending on what happened before. For example the SoC reset reason might be different for power-on-reset compared to reboot. If you need this behavior in your tests, I think it would be better to have that in a custom Strategy (possibly based on the GraphStrategy).

[Emantor]

Closing this based on @jluebbe explanation above. If you have questions regarding strategies, don't hesitate to ask us on IRC or via Matrix (which bridges to the same channel)