[U-Boot] [RFC] Double-stage u-boot to reduce footprint

[Luigi 'Comio' Mantellini]

Hi ML,

I'm working to have a small but also full-featured u-boot bootloader.
The idea, that I already see on lantiq sources, is to have a small bootstrap 
code that decompresses the final u-boot.

The code is divided into two stages:

 1) bootstrap: initializes the ram in order to decompress the u-boot binary. 
After that, bootstrap jumps to final u-boot 2)
 2) u-boot: the state of the art of the boot loaders.

Can be interesting for you to have these pieces of code?

I ask before to send any patch, because the boards to support the bootstrap 
code should define some symbols (CONFIG_BOOTSTRAP_*) and provides a linker 
script, and the lowlevel init code for the ram.

Thanks for any comments,

luigi


-- 


Luigi 'Comio' Mantellini
R&D - Software

Industrie Dial Face S.p.A.
Via Canzo, 4
20068 Peschiera Borromeo (MI) Italy
Tel.: +39 02 5167 2813
Fax: +39 02 5167 2459 
E-mail: luigi.mantellini at idf-hit.com 
Website: http://www.idf-hit.com


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