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<inf>
Have there been any more docs about SID, "Secure Boot" and such besides TOC0 wiki page and some IRC logs? Wanted to play a little bit with it, but don't want to brick my board instantly :) (i'm pretty sure i'll do it in the end, but...)
<KotCzarny>
the only documented/reported case of playing with secure boot resulted in bricked board
<inf>
Niiiiice.
<KotCzarny>
so either you have to convince allwinner or some vendor to get some manuals, or buy lots of boards if you want to play with it
<KotCzarny>
mostly because it's one way trip
<inf>
Yeah, thats what i assume.
<inf>
Btw. I've seen somewhere that if rootpk fuses are all same value, then signature is not checked... Even when secure boot is enabled, FEL still works as supposed, right?
<KotCzarny>
wanna confirm that? :>
<KotCzarny>
opi0(256) boards are cheap ;)
<inf>
Cant one then just turn whole rootpk to 0xff/0x00 (as in blow all the bits of that fuse), or it just doesnt work like that, and theres no way to blow single bits there?
<inf>
KotCzarny: actually, its very possible ill have some spares soon... :)
<KotCzarny>
another way would be making board with the socket and buying chips in bulk
<inf>
Glorious bga sockets, amirite?
<inf>
Is that even a (~standardized) thing?
<KotCzarny>
as long it works..
<MoeIcenowy>
I remember apritzel mentioned some restore bit in the eFURS
<MoeIcenowy>
eFUSE
<MoeIcenowy>
if it's burned
<MoeIcenowy>
the device will go back to old boot0 mode
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<MoeIcenowy>
and won't be able to be burned to SB again
<KotCzarny>
MoeIcenowy: add to wiki?
<MoeIcenowy>
I don't know it
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<inf>
To the logs maschine.
<MoeIcenowy>
P.S. something known: some AliOS OTT H3 firmwares burns the Secure Boot
<MoeIcenowy>
and at least 2 opis are known to be bricked by such way in the OPi QQ group
<KotCzarny>
bricked or locked down?
<MoeIcenowy>
locked down
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<MoeIcenowy>
but as it cannot run the official OPi firmware
<MoeIcenowy>
they usually think it's bricked
<KotCzarny>
and i guess no sources of alios fw ?
<MoeIcenowy>
yes
<MoeIcenowy>
AliOS is a heavily modified Android
<MoeIcenowy>
wihch is chosen by the TV management office ;-)
<KotCzarny>
did you try contacting them asking about how and what?
<MoeIcenowy>
nope, but for one instance I gave him a toc0
<MoeIcenowy>
and he booted it
<MoeIcenowy>
As I know, the AliOS is closed and evil
<KotCzarny>
so i guess devs are closed and evil too
<MoeIcenowy>
it has a very bad reputation in China, because it can remotely uninstalled your installed apps
<KotCzarny>
give them h3droid ;)
<KotCzarny>
though i guess operating systems have to conform to some chinese laws first
<MoeIcenowy>
this happened when some apps got their license revoked by the office ;-)
<MoeIcenowy>
it's only rules of some office
<MoeIcenowy>
not law ;-)
<MoeIcenowy>
KotCzarny: maybe H3Droid should provide some versions that are booted with TOC0 ;-)
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<DullTube>
What's the easiest way to boot mainline kernel on a A20 device from NAND to SATA (/boot partition with kernel on SATA disk)?
<plaes>
DullTube: there's a writeup somewhere in u-boot repository
<DullTube>
I haven't been doing things with Allwinner in a while. Last time I checked, mainline u-boot did not support NAND. I assume this has changed?
<DullTube>
plaes: googling for it now...
<mripard>
DullTube: it didn't
<plaes>
mripard: I have seen somewhere a writeup you created
<DullTube>
so how does one boot from NAND to SATA or SATA directly then?
<plaes>
no clue :(
<plaes>
DullTube: there's at least one board in u-boot that boots from nand: CHIP_pro
<mripard>
plaes: the CHIP Pro is also the only board that doesn't have an MLC NAND
<plaes>
yeah
<MoeIcenowy>
I think the current SPL can also boot from MLC, if the U-Boot itself is not corrupted, right?
<MoeIcenowy>
;-)
<DullTube>
Wouldn't a shim uboot work here? I.e. some precompiled u-boot image on NAND thats only purpose is to load the kernel and initramfs from the SATA disk?
<asyring>
plaes: do you run your cubietruck with an initrd?
<asyring>
is earlyprintk and earlycon the same?
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<inf>
KotCzarny: MoeIcenowy: just to make sure - whole TOC0 handling code is present in boot* code embedded directly on silicon, but we have full dumps of all these binaries?
<MoeIcenowy>
in fact currently seems no
<MoeIcenowy>
there seems to be two BROMs on chips with SB
<MoeIcenowy>
one SBROM and one NBROM
<MoeIcenowy>
if SB is not enabled NBROM is used
<MoeIcenowy>
if SB is enabled SBROM is used
<MoeIcenowy>
we only dumped NBROM
<inf>
Oh.
<MoeIcenowy>
and I think we will need a brick to dump SBROM
<MoeIcenowy>
;-)
<inf>
Another one. (:
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<smaeul>
I am planning to create a secure brick of a H5 to dump its SBROM
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<freemangordon>
hi there, anyone tried sunxi devuan image?
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<dFence>
freemangordon: here, but I’m struggling to put together the right ubi image - uboot keeps rejecting it
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<freemangordon>
dFence: ah I meant uSD boot. However, in the meanwhile I manage to boot that on q8 A33, it just nneds u-boot dd-ed as desctibed on http://linux-sunxi.org/Bootable_SD_card
<dFence>
freemangordon: devuan provides ready-made images for non-nand sunxi
<freemangordon>
however, USB doesn't seem to work, so I don;t have keyboard to login :)
<dFence>
d’oh ;)
<freemangordon>
but this is kernel stuff I can easily fix when it comes to it
<dFence>
yeah… something funky going on in mainline and USB - couldn’t get my CHIP’s usb to work on stale either
<dFence>
*stable
<freemangordon>
I got defconfig for 4.9 with working USB
<freemangordon>
*have
<freemangordon>
but don;t have time today to play with it
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<dFence>
hm will try that one, thanks
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