Dear "David Collier",
In message <memo.20091022093854.20...@postmaster+dexdyne.com.cix.co.uk> you
wrote:
>
> what I'd like to do is put it in a while loop - this is an embedded
> system and it has nothing better to do than to try again.
>
> but if I set up
>
> bootcmd=while [ .... ]; do ; mmcinit && ext2load mmc 0:1 0x10400000
> /boot/uImage && bootm 0x10400000 ; done
>
> no matter what I have put in or around the [..] area, it barfs.
Did you understand why it barfs? The '[' is actually a command name,
which usually is a synonym for the 'test' command. U-Boot does not
provide such a coimmand, and the hush shell does not provide it as
shell builtin either, so this _must_ fail.
I am surprised that you did not find this out yourself - U-Boot should
issue a pretty clear error message, something like
Unknown command '[' - try 'help'
> Could anyone show me a working example of a hush while loop please? Or
> tell me what I'm doing wrong :-)
Here is a (tested and working) example:
=> mw 200000 0
=> while itest *200000 == 0 ; do
> tftp 200000 tqm5200/uImage
> echo === done ====
> done
Using FEC ETHERNET device
TFTP from server 192.168.1.1; our IP address is 192.168.160.4
Filename 'tqm5200/uImage'.
Load address: 0x200000
Loading:
#################################################################
############################################################
done
Bytes transferred = 1830503 (1bee67 hex)
=== done ====
=>
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
"Where shall I begin, please your Majesty?" he asked. "Begin at the
beginning," the King said, gravely, "and go on till you come to the
end: then stop." - Alice's Adventures in Wonderland, Lewis Carroll
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