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ConnectCore 9M 2443 U-Boot

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Hi All,

I'm new to ARM9 core. Does anyone know how to re-build U-Boot and put it back to this development board ? I would like to add some GPIO control on it.

Thanks in advance.

Best Regards,
Kevin
asked Feb 16, 2011 in Linux by kevinlo22 New to the Community (3 points)
recategorized Nov 26, 2013 by tuxembb

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7 Answers

0 votes
Which ESP are you using?
answered Feb 16, 2011 by bobthomas13 Seasoned Professional (182 points)
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Hi Bob,

I'm using Digi ESP Version 2.0
Build id: 20090423-RevA DEL-5.0 for Digi Embedded Linux 5.0

Kevin
answered Feb 16, 2011 by kevinlo22 New to the Community (3 points)
0 votes
Go to Digi ESP -> New Project -> Uboot Project.
There you can modify the code.
answered Feb 16, 2011 by bobthomas13 Seasoned Professional (182 points)
0 votes
Hi Bob,

Thanks. How can I test this new U-Boot code? As simple as "Hello World" demo or perform the U-Boot recover process ?

Kevin
answered Feb 16, 2011 by kevinlo22 New to the Community (3 points)
0 votes
Change the code as needed then build & install the project..
final image will be in tftp folder ... then using update command you can update the uboot partition on flash from the image in tftp folder on PC.
answered Feb 17, 2011 by bobthomas13 Seasoned Professional (182 points)
0 votes
Hi Bob,

Thanks. I tested the U-Boot code by "update flash" on the mtd0 partition directly.

May I know the program flow during power-up sequence ? The ARM9 should execute Start.S Assembly code first, then what will be the next ?

Best Regards,
Kevin
answered Feb 19, 2011 by kevinlo22 New to the Community (3 points)
0 votes
Hi Kevin ,

I am senidng the link , from here you can find the
program flow sequence during power-up the module.

http://msdn.microsoft.com/en-us/library/Aa446905\

Regards,
cpigilam
answered Feb 21, 2011 by cpigilam Veteran of the Digi Community (655 points)
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