On 27/07/18 01:15, Brian Sammon wrote:
On Wed, 25 Jul 2018 16:57:09 -0400
Gene Heskett <gheskett@shentel.net> wrote:
The only possible mention is at
<https://forum.odroid.com/viewtopic.php?f=138&t=20593>
Which links to
https://fredericb.info/2016/10/amlogic-s905-soc-bypassing-not-so.html which
is particularly interesting.
Also, it's my understanding that this problem exists with nearly
all of these pocket-computer/fruit-pi devices to some degree or
other -- to the point that it's a shorter list of the devices that
don't have this problem than a list of the devices that do.
(Anyone know of such a list?)
I think the real question is whether to countenance something that
has a boot loader in Flash which can be (intentionally or otherwise)
overwritten (link here is interesting since it gives a memory layout
http://odroid.com/dokuwiki/doku.php?id=en:c2_partition_table ) or
whether to prefer something in ROM (which is what the RPi has).
The robustness of the ROM approach has a lot going for it, but it
can cause a Hell of a problem if either it contains a
hardware-initialisation bug (which might be the cause of some issues
I'm currently exploring) or if it leaves the hardware in an
operating state which the device's owner considers unacceptable
(e.g. one that requires a signed kernel).
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]