[U-Boot-Users] CFG_MONITOR_BASE < CFG_FLASH_BASE

[Wolfgang Denk]

In message <fa1cio$vqv$1 at sea.gmane.org> you wrote:
> 
> yes, it's an old thread -- just for the record:
> 
> David Hawkins wrote:
> > The MPC8349E can be booted such that the core is held in
> > reset, and the processor registers can be configured over
> > PCI by another host computer. Therefore it is conceivable
> > that the host can program the SDRAM controller on the
> > MPC8349E and take the core out of reset. If the core
> > is configured to boot from an address mapped to SDRAM,
> > then U-Boot could have been copied to SDRAM by the
> > host. Once U-Boot boots, it could then use FTP etc
> > to boot the kernel blah blah ...
> > 
> > Yeah yeah, its contrived ...
> 
> Not really, we almost do it in that way on a custom MPC8540 and a
> MPC8541 board.

There are several boards that do this.

IIRC the "PN62" was the first one to implement  this  feature.  There
U-Boot is running on a flash-less PCI card, too.

Best regards,

Wolfgang Denk

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