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Starting a user program from the Pre-loader.

Altera_Forum
Honored Contributor II
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Hi, 

 

I had generated the preloader image by following the steps given in  

http://rocketboards.org/foswiki/view/documentation/gsrd131preloader  

I had programmed the preloader file using hps.exe software. 

 

and after power-on reset the Preloader is working fine. That is I could able to receive the serail communication comments through UART. 

 

My query is .., 

 

I have run an user code to blink the LED. I had written the code and compiled using ARMDs-5 IDE.  

 

How to load the user written code after the preloader and start executing it ????? 

 

Could you please give me suggestion or tips to execute the usercode from the preloader.
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Altera_Forum
Honored Contributor II
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There is common way right? You may bring the path and application name to the kernel as a boot parameter for init, then kernel will only start the init process itself  

try look at this(see: http://en.wikipedia.org/wiki/linux_startup_process). Traditionally this application then handles starting daemons, geTTYs, etc. 

 

Most boot loaders allow you to specify a path for the init app as part of the configuration for where to find the kernel. 

 

as example:- /boot/vmlinuz-n.n.n init=/path/to/theapp
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Altera_Forum
Honored Contributor II
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there are quite number of example for this, bare metal is part of the example... that located in the Altera installation folder it self for reference.

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