[U-Boot-Users] BDI2000 and MPC8260
wd at denx.de
Thu Sep 1 17:50:14 CEST 2005
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.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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