<zapb_>
Does somebody know if there is a source for RPi 2350 chips?
<zapb_>
I can find only boards but no chips
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<Haohmaru>
i thought only the $vendor sells them
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<sys64738>
they used to have a form where you could ask for samples, but that doesn't seem to be a thing anymore
<sys64738>
my guess is that now that a secure boot vuln has been found (there's a presentation about one at 38C3) they'll start a new production run with taht + errata E9 fixed
<zapb_>
sys64738, oh, didn't know that somebody found a vulnerability in the secure boot. If they already fixed it I guess it's a SW bug in the boot code then?
<sys64738>
maybe, or they can mitigate it in there anyway
<sys64738>
the description is pretty vague at least
<Haohmaru>
h4x0rz
<zapb_>
Yep, sounds like a logic attack rather than using HW attacks
<Haohmaru>
i don't even know how a firmware for a dual-core MCU would look like
<Haohmaru>
is it basically 2 firmwares?
<sys64738>
same ROM, code is such that the same codepath will branch differently dpeneding on the core, and the secondary one will suspend itself until there's user firmware. then user firmware can ignore hte secondary one, or offload code onto it. it's alll one image normally (at least with pico-sdk)