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LS1021a FBSL to Uboot Transition Clarification

Question asked by Elias Bitbaker on Jul 8, 2020
Latest reply on Jul 14, 2020 by bpe



I have been having this confusion for a long time and would like to throw it to here.


I know the Boot ROM will load the FSBL into the internal RAM and then FSBL will load the Uboot from boot source into DDR. 


My question is once FSBL is done (copy or load Uboot into DDR) who is in charge of executing the uboot binary?


In other words, who is initiating the uboot code to run (so as to load initramfs, dtb, kernel and linux) how does the who knows where to find the main loop in uboot to run it?