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Does u-boot run in RAM or in the boot device ?

Question asked by ranshalit on Jan 19, 2018
Latest reply on Mar 6, 2018 by igorpadykov

Hello,

 

I try to get better understanding of u-boot initialization.

From my reading, it seems that there are 2 methods of boot:

1. boot the u-boot.imx from the device boot

2. boot spl which initialize ddr, and then load u-boot from the boot device (into DDR?) ?

 

As to (1) option above, is it that u-boot runs in the boot device or in RAM ?

 

Another question:

what's the purpose of pmic and rtc initalization (with i2c) ?

Why can't kernel do that ?

 

Thank you,

Ran

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