Thoughts about U-boot binary size increase

[Lukasz Majewski]

Hi Marek,

> On 3/28/24 10:20 AM, Lukasz Majewski wrote:
> > Dear Community,
> > 
> > I'd like to share with you some thoughts about growth of u-boot's
> > binary size for SPL and u-boot proper.
> > 
> > Board: XEA
> > SoC  : imx287 (still in active production)
> > Problem: SPL size constrained to ~55 KiB (This cannot be exceeded).
> > 	 Board design constraints u-boot proper size to less than
> > ~448 KiB
> > 
> > 
> > When XEA was added (2019.07):
> > 	- u-boot.sb (SPL): 37 KiB
> > 	- u-boot.img 	 : 401 KiB
> > 
> > Now (2024.04):
> > 	- u-boot.sb (SPL): 40 KiB  
> 
> Do you know which symbol(s) grew in here ?

I will need to check it.

> 
> > 	- u-boot.img 	 : 427 KiB
> > 
> > (With a _lot_ of effort put to reduce the size)
> > 
> > Hence, the question - would it be possible to take more concern
> > about the binary size growth?
> > 
> > Maybe CI could catch patches, which enable by default some features
> > and the size is unintentionally increased?  
> 
> Try and set CONFIG_BOARD_SIZE_LIMIT and CONFIG_SPL_SIZE_LIMIT for
> this board, that would trip build error if the size grows too large.

I think that setting CONFIG_BOARD_SIZE_LIMIT and CONFIG_SPL_SIZE_LIMIT
would help for rising the "red flag" of the size limit.

However, I would like to signal that there is a problem with u-boot
size increase.


Best regards,

Lukasz Majewski

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