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.
Alex
On Thu, 01 Sep 2005 17:50:14 +0200 Wolfgang Denk wd@denx.de wrote:
In message 20050901111214.457804dc.ajz@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@denx.de Reader, suppose you were an idiot. And suppose you were a member of Congress. But I repeat myself. - Mark Twain