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List:       neo1973-hardware
Subject:    Re: NOR flash, NAND flash and the steppingstone
From:       Andy Green <andy () openmoko ! com>
Date:       2008-09-09 7:06:51
Message-ID: 48C6208B.2010502 () openmoko ! com
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Somebody in the thread at some point said:

> Which brought me to the next idea: Write a tiny "just do the basic
> setup and prepare the kernel TAGs" stubcode, that would be uploaded
> to steppingstone and executed until breakpoint, so that JTAG can be
> used to upload the kernel into SDRAM, and then execution resumed in
> the kernel image with registers r0, r1, r2 pointing to the parameter
> structures.
> 
> And now I see, that such kind of project is already in work :-)

You have to do a bit more like ATAGs to get kernel to start... you can
find ATAG generation in phase2.c

http://git.openmoko.org/?p=qi.git;a=blob;f=src/phase2.c;h=fe8b0ecf3876d84a9e2b7a81da5b196fd0c4ed9a;hb=HEAD


and OpenOCD script in there to do it all from scratch via steppingstone.

http://git.openmoko.org/?p=qi.git;a=blob;f=gta03-qi.ocd;h=16cf0bdde5c9569d7c8e360043c27679a148b5a9;hb=HEAD


- -Andy
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