Bootloader upgrade
Werner Almesberger
werner at openmoko.org
Mon Mar 12 05:03:31 CET 2007
Paul Eggleton wrote:
> GTA01Bv3 # nand write 0x32000000 u-boot 196252
> NAND write: device 0 offset 0x0, size 0x40000
> 262144 bytes written: OK
Two problems:
- somewhat confusingly, u-boot uses hex as the default base, so the
size was 0x196252 (but nothing bad has happened because of this)
- you should use "write.e", not "write". "write.e" skips over bad blocks,
which is also what the loader does. If there are bad NAND Flash blocks
in your u-boot partition, the rest of u-boot will be loaded at the
wrong address. (Bad blocks are a "normal" feature of NAND Flash.)
> After a short while it powered off by itself (is there a way to disable this?
Yep. Set the environment variable boot_menu_timeout to a large value.
> Any suggestions? Was it a bad idea for me to try to do this?
You probably do have a bad block somewhere. But it seems that enough
of u-boot works anyway. Lucky you :-)
Please do the following:
dynpart
dynenv set u-boot_env
reset
That should fix it. You probably also want to re-flash u-boot using
"write.e". After that, you have to repeat the above ritual. (Note:
if using DFU, u-boot takes care of all that for you.)
If this doesn't help, please send me the output of
nand bad
- Werner
--
_________________________________________________________________________
/ Werner Almesberger, Buenos Aires, Argentina werner at almesberger.net /
/_http://www.almesberger.net/____________________________________________/
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