I writer a bootload, and I find when the code jump from boot to mainApp, it Fail. And I find I use PIT interupt in mainApp, So I reset PIT interupt in mainApp when
I jump to boot from App, It works ok.
But I realy do not understarand I shut down the primask, before I jump, It should close all interupt. Why the primask not work when code from boot to mainApp?