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"Hello World" Demo

Posted by balanga 
"Hello World" Demo
July 25, 2017 11:31AM
According to https://www.denx.de/wiki/view/DULG/UBootStandalone

there is a "Hello World" Demo which can be run like this:-

=> loads
## Ready for S-Record download ...
~>examples/hello_world.srec
1 2 3 4 5 6 7 8 9 10 11 ...
[file transfer complete]
[connected]
## Start Addr = 0x00040000

I'm trying to work through some of the examples at https://www.denx.de/wiki/view/DULG/UBootCommandLineInterface just to get some idea about what u-Boot can actually do, but the above example didn't work for me. Did I do something wrong?
Re: "Hello World" Demo
July 25, 2017 12:14PM
That is a module that was probably not selected to save space. Did you compile the u-boot and have it turned on to compile it or use an existing one which was more than likely turned off to save space from unneeded modules?
Re: "Hello World" Demo
July 25, 2017 02:00PM
feas Wrote:
-------------------------------------------------------
> That is a module that was probably not selected to
> save space. Did you compile the u-boot and have it
> turned on to compile it or use an existing one whi
> ch was more than likely turned off to save space f
> rom unneeded modules?


I didn't compile it, I'm just trying to familiarise myself with an existing u-boot environment, by trying things out...
Re: "Hello World" Demo
July 25, 2017 03:04PM
You need to pay attention to the following text found on the denx.de site you referenced:
"Please note that U-Boot is highly configurable, so not all of these commands may be available in the configuration of U-Boot installed on your hardware, or additional commands may exist. You can use the help command to print a list of all available commands for your configuration."
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