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12748 Discussions

uClinux boot routine

Altera_Forum
Honored Contributor II
‎02-16-2010 06:39 PM
1,393 Views

Hello, 

 

I'm just curious about the boot process of uClinux on my NIOSII board. I'm downloading 

 

the zImage over the NIOSII command shell: nios2-download -g 

 

What is the relation between the bootloader and the zImage file and whats with the -g 

 

parameter in the command? 

 

Would like to explain this part in my documentation and would appreciate if somebody 

 

could give some comments. 

 

Thanks again, 

 

Roman
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Altera_Forum
Honored Contributor II
‎02-17-2010 07:24 AM
487 Views

-g just says nios2-download to start the CPU after the download. If you omit -g, nios2-download will load the elf file in memory, but leave the CPU in a paused state.

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Altera_Forum
Honored Contributor II
‎02-17-2010 10:34 AM
487 Views

 

--- Quote Start ---  

whats with the -g parameter in the command? 

--- Quote End ---  

 

nios2-download --help 

-Michael
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Altera_Forum
Honored Contributor II
‎02-17-2010 04:18 PM
487 Views

Thx for replies. 

 

So where is the zImage file stored when I'm downloading with this methode to the board? 

 

Roman
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Altera_Forum
Honored Contributor II
‎02-18-2010 11:46 AM
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The elf file itself contains the address at which the data should be uploaded.

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Altera_Forum
Honored Contributor II
‎02-23-2010 06:20 AM
487 Views

thanks a lot

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