[U-Boot-Users] can i load u-boot into RAM and jump to it as a test?

VanBaren, Gerald (AGRE) Gerald.VanBaren at smiths-aerospace.com
Thu Aug 26 21:56:59 CEST 2004

FAQ.  Yes, but it is difficult, unsupported, and fraught with peril.  You are on your own if you choose to do it.


> -----Original Message-----
> From: u-boot-users-admin at lists.sourceforge.net
> [mailto:u-boot-users-admin at lists.sourceforge.net]On Behalf Of
> Robert P.
> J. Day
> Sent: Thursday, August 26, 2004 3:35 PM
> To: U-Boot list
> Subject: [U-Boot-Users] can i load u-boot into RAM and jump to it as a
> test?
>    (i posted something similar to this on the SF forum before i
> realized there was a real mailing list.  oops.)
>    before i commit myself to reflashing with u-boot, i'd like to know
> if it's possible to just load it into RAM and use the current
> bootloader to jump to it, just to see the menu come up, nothing more.
>    working with an 8xx board, 850DE-based, and as a test, i did a
> configure with RPXlite_config (even though, technically, it's not
> exactly an RPXlite but close).  generated u-boot.bin and used
> embedded
> planet's planet core (PC) bootloader to download it into RAM.
>  at this
> point, am i allowed to just use PC to
> > g <download address>   ??
>    we could do that with PC -- compile a new version, download it to
> RAM and jump to it, just to see that it seemed to function at the
> basic level.
>    thoughts?  i've tried it, and every time i use PC to transfer
> control, i get nothing -- immediate hang.  maybe a serial comms
> problem?  who knows?
> rday
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