Basic 405gp question

Matt Porter mporter at
Sat Oct 23 08:19:00 EST 2004

On Fri, Oct 22, 2004 at 03:42:07PM -0400, Smith, Gene wrote:
> I have a custom 405GPr board containing 64M ram and 4M flash with no PCI 
> connector, just ethernet and ttyS0/1 to outside world. I am able to load 
> and run simple ppc code to ram using a Macraigor JTAG debugger via 
> insight/gdb using gnu tools provided by them.
> What would it take to get linux running on this board? Any pointers or 
> suggestions would be appreciated.

Port u-boot using walnut code as an example.

Copy the Linux walnut code to foo_board.[c|h]. Remove what you don't need
from the files. Modify other things accordingly. Update the

Unless the hardware is buggy, it should be very straightforward. You
can even proof of concept things by loading vmlinux from your JTAG
debugger and setting r3-r7 appropriately...skipping the firmware stage.


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