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start os on power on

Postby Ukg » Tue, 28 Nov 2006 08:20:02 GMT 

Hi All,

Does anyone know how I can store my OS, generated using PB CE 6.0 on my 
development board and have my OS start up on power on?  

Thanks,
RH
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Re: start os on power on

Postby Paul G. Tobey [eMVP] » Wed, 29 Nov 2006 02:27:03 GMT 

It should be obvious that that will depend on which board, what I/O it has, 
etc.

Paul T.
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Re: start os on power on

Postby Ukg » Thu, 30 Nov 2006 11:49:01 GMT 

O.k. thanks for pointing that out.  I was more after something like, look at 
this link.  www.startupos.com or you need to place it at a certain memory 
block address.  I am using a custom board that is running the PXA27X
Hope someone can help me get started.
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Re: start os on power on

Postby Paul G. Tobey [eMVP] » Fri, 01 Dec 2006 02:25:21 GMT 

Wouldn't that link have to know the answer to my follow-up before it could 
say?  If there's no flash on your board, there's no answer to your question. 
If you're using the Intel board, look at the JFlash program, which can be 
used by connecting a cable to the JTAG port, to program the flash.  This is 
a *very* slow way to program an OS, however.  Generally, a bootloader will 
load the OS from some storage device and know how to program it into the 
particular flash that you happen to have.  If your bootloader doesn't do 
this, you might need to either buy some code from someone like BSquare or 
figure out how to read your storage device in your bootloader and program 
the flash.  Again, though, every piece of hardware is different...

Paul T.
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Re: start os on power on

Postby Ukg » Fri, 01 Dec 2006 07:30:00 GMT 

Thank you Paul.  I thought that I could write NK.bin to flash and that should 
be it.  I purchased the CE 6.0 BSP from an OEM and their bootloader is 
supposed to be capable of loading the operating system.  So I thought that 
this would naturally occur when the power was turned on.  When this didn't 
work, I thought that there is something that I am leaving out.  Maybe a 
SYSGEN_XYZ option.   So from what I understand, the bootloader should be 
written to flash, as well as NK.bin.  Then the bootloader should jump to the 
address of the OS (NK.bin) when it goes through the power on state.  Is this 
correct?  

Thanks, 
RH
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Re: start os on power on

Postby Dean Ramsier » Sat, 02 Dec 2006 12:07:39 GMT 

The bootloader will do whatever the OEM configured it to do.  That could be 
absolutely anything.  The only way to know what the bootloader will do or is 
capable of is to ask the OEM.

-- 
Dean Ramsier - eMVP
BSQUARE Corporation
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Re: start os on power on

Postby Ukg » Mon, 04 Dec 2006 16:16:00 GMT

Thanks Dean,

I got it working

RH
"Dean Ramsier" wrote:

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