[U-Boot-Users] BDI2000 and MPC8260
ajz at cambridgebroadband.com
Thu Sep 1 17:56:17 CEST 2005
Thanks for replying Wolfgang,
Actually I'd figured this out. I would have sent an update, but I thought my
original email had got lost by the server because it didn't send me back a copy.
On Thu, 01 Sep 2005 17:50:14 +0200
Wolfgang Denk <wd at denx.de> wrote:
> In message <20050901111214.457804dc.ajz at cambridgebroadband.com> you wrote:
> > The problem I am seeing is that the bdi2000 cannot communicate with the PM828 if the HRW is not
> > present in the flash device. I.e. you need u-boot.bin already loaded into flash in order to
> > load u-boot.bin into flash!
> This is normal; with an erased flash, the processor will read a HRCW
> which sets external bus arbitration and CPU core disabled - there is
> nothing left for the BDI to communicate with.
> > At the moment I can work around this problem by setting some jumpers on the board to remap CS0
> > to a PROM device containing u-boot, writing the HRW into flash, and returning the jumpers so
> > that CS0 is mapped to the flash again. Unfortunately I will not be able to do this on our
> > custom hardware as there will only be a flash device and no PROM.
> Install a RCFG jumper... The PM82x modules have a RCFG jumper to
> bring up the CPU in internal default configuration.
> Best regards,
> Wolfgang Denk
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> Reader, suppose you were an idiot. And suppose you were a member of
> Congress. But I repeat myself. - Mark Twain
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