[U-Boot-Users] RE: linuxppc_2_4_mpc5200 / 5200lite zImage now working

[Wolfgang Denk]

Dear Tord,

in message <004B1D7A5257174C9044A1B7BD0E60ED447037 at ratatosk.combitechsystems.com> you wrote:
> 
> I built u-boot as you described (low boot config). I had problems
> downloading the binary image with the dBUG dn command (tftp, image
> format, might have to do with 100 mbps ethernet?). I then turned to the

I never used dBUG - does it expect a special image format? Maybe  you
have to specify "binary" images or so?

> "dl" command which only supports S-records. I made an image for loading
> at 0x20000 by the following command:
> 
> ppc_82xx-objcopy --gapfill=0xff --change-adresses=-0xFEFE0000 -O srec u-boot_20000.srec

Umm...

> I loaded this with the dl command at 0x20000 and then it was programmed
> into flash by:
>  
> fp FF000000 FF035250 20000
> 
> I moved the boot jumper to the Low position and u-boot got up!
> Unfortunately, as soon as I tried to save environment variables (IP nad
> MAC-adresses) and rebooted, the system crashed. I fear that my objcopy
> tweaking might have been a little bit too hasty... : )

Probably. Try out what happens when you (re-)  convert  the  _binary_
image into S-Records, something ike this:

ppc_82xx-objcopy  --change-adresses=-0xFEFE0000 -I binary -O srec \
  u-boot.bin your_image.srec

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
No journaling file system can recover your data if the disk dies.
                                 - Steve Rago in <D4Cw1p.L9E at plc.com>