[U-Boot] Why u-boot relocate from flash to RAM

FengHua fenghua at phytium.com.cn
Mon Dec 2 15:18:10 CET 2013


> Hi,
> 
> I can't understand that why u-boot code relocate itself form flash to RAM?
> why it doesn't execute from flash?
> Can anybody explain. Plz
> 
First, flash is slow.
Second, there are many data structures or variables which should be writable.
So, we should copy u-boot to RAM and relocate it.








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