Hello, @piaochunri
I feel very sorry for the delay.
It is really a huge topic, and a lot of ways may accelerate the boot time.
Currently in BSP, there are mainly TFA, U-boot, kernel and Rootfs, each of them could be futher tuned. Customize the TFA/uboot, optimize the kernel configuration, remove unnecessary drivers/modules, remove useless applications/tools that automatically initialized could shorten the boot time.
Furthermore, utilize profiling tools to identify and address any bottlenecks, to optimize the code could also be benefit to the boot time.
You may try various method to reduce the boot time to check if the requirement could be fulfilled. For any specific issue faced during the work, you may raise tickets, we will be happy to support.
Best Regards
Chenyin
