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

29 Nov
2010
29 Nov
'10
11:21 a.m.
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@idf-hit.com
Website: http://www.idf-hit.com
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Luigi 'Comio' Mantellini