Le 24/09/2010 19:35, Wolfgang Denk a écrit :
Dear Marek Vasut,
In message201009241737.27335.marek.vasut@gmail.com you wrote:
Using the DT for run-time configuration of U-Boot would be especially interesting. Assume: a single U-Boot image for all - say - OMAP3 boards...
This looks very cool. I thought about this and I came to a further idea:
- Make "minimal" u-boot that'd be independent of DTree
- Upon setting variable "fdt" to an address of the DTree, enable remaining
components of uboot
The second point would allow booting a platform in case the DTree was faulty. Or we can have a known-good DTree and a variable that'd allow to override it, that might be even better.
We will probably need something like that anyway - the "minimal configuration" being largely what is running before relocation, the "full configuration" when we have full access to normal resources.
Best regards,
Wolfgang Denk
Stop me if I'm wrong, but basically this would imply that u-boot be built with support for the largest possible device combination, thus be rather big, right? I hope the ability to trim it down u-boot to a minimum is retained, though, i.e. be able to choose between a one-size-fits-all binary that will run on anything *or* a tight fit that will run only on a given platform with minimal footprint (or anything in-between, actually).
Amicalement,