Making Neo Brickproof, was comments after reading Wiki

Simon Matthews s.matthews at karrak.id.au
Thu May 17 12:09:44 CEST 2007


Just had a further thought about what to do if the main bootstrap loader
gets trashed that maybe easier to implement. Rather than a stage 1
bootstrap loader looking to the USB interface for a replacement how
about looking on the SD card?

Simon

On Thu, 2007-05-17 at 01:58 -0300, Werner Almesberger wrote:

> Simon Matthews wrote:
> > It seems to me as someone who designs and makes embedded devices (mainly
> > using the Freescale MC9S12 processors) that you need another lower level
> > bootstrap loader that is small,
> 
> Ah yes, we've been through that idea as well :-)
> 
> We rejected it, because we don't want to have yet more code
> duplicating functionality found elsewhere to maintain. Besides, it
> wouldn't be all that trivial, given that we don't have any "simple"
> interfaces. (Anything that needs a debug board or other fancy
> adapters doesn't count.)
> 
> Also, there really isn't much difference between a few protected
> bytes or hundreds of protected kilobytes. We need an extra chip
> anyway, and if we want something reasonably small and modern, it'll
> have plenty of space. Thus there's no penalty in using it.
> 
> But yes, the "small loader" approach works well enough in other
> contexts. I've used it myself.
> 
> - Werner
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.openmoko.org/pipermail/community/attachments/20070517/a88333fa/attachment.htm 


More information about the community mailing list