[uClinux-dev] Re: 5272_flash_uclinux

From: Greg Ungerer (gerg@snapgear.com)
Date: Tue Jan 01 2002 - 07:45:26 EST


Hi Prashanth,

PRASHANTH B H wrote:
> I am trying to boot uclinux from5272 flash from  last one month ,can u help me please
> 
> This is what i did
> *went to linux minicom and established serial communication thro dbug
> *i configured  "FTP -> ascii->programs -> as  ascii-xfr -sv -l 50 "
> *Then used the command " dl 0x00020000 "
> *It said "escape to local host and sent s record "
> *Then i pressed cntl a and z , then s to send the file " image.srec "(800 KB)
> *Then it started the upload process ,it was  very  slow
> *I left it to continue patiently but kept loading even after 4.5 MB was reached
> *My doubt is what and where is loading ?
> *Finally I aborted the loading by pressing reset button on the board .
> *Then i used upuser and update commands
> *Where is the  uclinux command prompt ?

For one thing, the "image.srec" file is not a stand alone bootable
image.
It expects to be loaded via some type of boot laoder. So it expects the
5272 and SDRAM to be initialized when it starts running. Loading
image.srec
into FLASH will not work on its own.

image.srec is designed to be loaded by dBUG (as you are trying to do)
and then run from dBUG (using "g 0x20000").

Regards
Greg


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Greg Ungerer  --  Chief Software Wizard        EMAIL:  gerg@snapgear.com
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