On Thu, 2007-05-17 at 09:19 -0300, Werner Almesberger wrote: > Yeah, we tried, but it just doesn't seem to be possible :-( There > are some alternatives, but they then lead to other problems, such > as chips not being available in quantity, etc. (And we've had our > number of surprises with that. Once bitten, ...)
If you do find a chip with a small protected page i might be interested in writing the loader i have outlined. > will be exercised well enough. To the contrary, since this is code > we already use daily, it's more likely to be correct than a > special-purpose loader that only gets used rarely. As long as the bootstrap code reprogramming is bullet proof or you don't see the need for changing the boot code i can't see any problems with one large bootstrap. > You'd have to ask Harald for comments on USB (among other things, > he implemented DFU in u-boot), but my impression is that it's hard > and messy enough that nobody wants to maintain yet another stack. I looked at using USB a few years ago and decided it was too convoluted and complex. IMHO a powered Ethernet variant would have been a much better arrangement that the USB mess. Regards Simon
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