[Arm-netbook] It arrived in the post just now!

[luke.leighton]

On Wed, Jul 31, 2013 at 2:34 AM, Henrik Nordström
<henrik at henriknordstrom.net> wrote:
> ons 2013-07-31 klockan 01:40 +0100 skrev luke.leighton:
>
>>  surpriiise!  i take it they're aware that those buffer overruns - a
>> stupid bug which i fixed in the 3.3 a20-dev code i initially tested -
>> probably resulted in allwinner's employees going down a whooole slew
>> of increasingly-desperate modifications to the A20 USB codebase, when
>> in fact the problem was simply stack/memory corruption?
>
> Yes, but the issues in 3.4 is different, not really A20 related even.
>
>>  yes.  i'm running fel-boot, that works fine, loads off the uSD....
>> buuuut there's nothing on the NAND (i wiped it).  that's a little
>> different from bootstrapping from android.
>
> Yes quite different, and with the fel jumper hidden it's not so easy for
> anyone else to fel boot.

 ... unless you completely wipe the NAND, in which case the cpu will
jump to fel every time.

>> > Right.. should also write up a document on how to disassemble the PCMCIA
>> > casing safely so one can reach the USB-BOOT "jumper" for those who needs
>> > it.
>>
>>  good point.
>>
>>  any chance you could put it here:
>> http://rhombus-tech.net/allwinner/a20/boot/
>
> Added http://rhombus-tech.net/allwinner/a20/EOMA68-disassembly/

 awesome.

> Any volonteers on writing one with some nice pictures etc?
>
> Points to empasis: (already in page but feel free to rewrite / improve /
> correct)
> - Be patient, don't use excessive force
> - You only need to remove the "top" shield (same side as uSD slot) to
> reach usb-boot jumper.
> - Start from the "outside" (hdmi contacts etc).
> - Push the shield gently to the side to loose it's grip. Wiggle it a bit
> working up the edges.
> - The metal is glued to the EOMA68 connector with adhesive tape. When
> reaching the EOMA68 connector just gently bend one edge the shield for a
> while until the tape looses it's grip.

 is it?  gosh.  they did a decent job then.

oh wait.. it might just be the lacquer that they spray on the boards.
hmmm, you (or someone else) might have to take some pictures because i
have one of the early ones, it didn't even have the protective sleeve
inside.

 question, henrik: did the CPU card have a yellow protective sleeve,
top and bottom inside?

 if not, i'm going to be *really* pissed.

l.