OK I have changed it to while 1==1 ; do ; mmcinit && ext2load mmc 0:1 0x10400000 /boot/uImage && bootm 0x10400000 ; done
and if I do run bootcmd it simply says "unknown command 1==1" so I'm still lost.... I know I have hush installed, cosz if I do your multi-line-version I get the prompt. ------------------------------------------------------------ All I saw about hush was "bourne-compatible", and "provides while...do..done" scripting. I failed to find a proper manual... probably for lack of effort, but I've just googled again and nothing springs up.. Could you possibly point me at any hush documentation ? Many thanks David In article <20091022113139.db6961a...@gemini.denx.de>, w...@denx.de (Wolfgang Denk) wrote: > *From:* Wolfgang Denk <w...@denx.de> > *To:* from_denx_ub...@dexdyne.com > *CC:* u-boot@lists.denx.de > *Date:* Thu, 22 Oct 2009 13:31:39 +0200 > > 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 > Collier www.dexdyne.com _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
