Hi Frank, On 07/04/2014 15:49, Frank Ihle wrote: > Hi U-Boot, > > you recently gave me the hint about the Falcon Mode for my Fast > Booting investigations. But I think might got it wrong, could > somebody correct me if so?: > > - According to the "Falcon Mode" Pdf of October 2013 > (http://www.denx.de/wiki/pub/U-Boot/MiniSummitELCE2013/2013-ELCE-U-Boot-Falcon-Boot.pdf) > The Falcon mode is just about to chose 2 different execution modes > during startup - one that starts Linux directly (and skips u-boot) > and the other for instance to make updates, or failsafe mode (and > starts u-boot). Or does it even contain more functionality ?
The second starts U-Boot as you are used to. > - According to the "Minimizing boot times using U-Boot Falcon Mode" > Pdf of July 2012 > (http://schedule2012.rmll.info/IMG/pdf/LSM2012_UbootFalconMode_Babic.pdf) > it's mentioned that this can only run with boards, which are able to > work with SPL. I guess here SPL means Second Programm Bootloader. I'm > not an expert in this area, but wouldn't it be possible to run every > board with an SPL, since it's just Software like a Bootloader? Of course, but not all boards supported in mainline were converted to use SPL, and for this reason not all boards support out of the box Falcon Mode. > And if > not what is the "real" eye of the needle here ? I'm just asking > because I didn't get the problem here. It is simply a snapshot of the current U-Boot mainline. The switch between Linux/U-Boot is implemented in SPL, and this makes sense because SPL is much smaller that the whole U-Boot, dropping also the time that a SOC needs to load an image from the storage media. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sba...@denx.de ===================================================================== _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot