<atsampson>
there are quite a few pull requests open on sunxi-boards at the moment, if any of the maintainers are feeling bored...
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<ssvb>
crap, I have accidentally destroyed a cleaned up patchset for u-boot just before sending it :(
<ssvb>
now need to reconstruct it from a messy code again
<Seppoz>
where you guys at?
<Seppoz>
@ oliv3r
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<alatnet>
yo, have a giada q11 mini that has an allwinner a10. it's having problems where i cannot install any apps in the included android system on it. I am able to boot a MK802 linux image on it but i have no access to the nand or the sata drive. think anyone can help me out in figuring out how to fix the android portion? atm im not anywhere near the device.
<Seppoz>
well first you want to find out why your system storage is full
<alatnet>
yea... problem with that tutorail
<Seppoz>
maybe the partitioning of the image you use suck
<alatnet>
that assumes that i have access to a micro usb connection to connect to the computer
<Seppoz>
or maybe your system aprtition is mounted read only
<alatnet>
i have no idea... the device was an open box system anyway
<Seppoz>
in any way you will need root/console access
<alatnet>
yea...
<alatnet>
come monday, i'll see if i can access adb through the serial port on the device
<alatnet>
but i am able to boot off of the sd card slot
<alatnet>
so not all is lost
<alatnet>
is there any CWM that has keyboard and mouse control or at least that sets adb up though ethernet?
<alatnet>
oh yea, i should note that when i tried to do a factory reset, it formated the flash storage but then restarted to the red exclamation point.
<alatnet>
there doesnt seem to be any sort of recovery as there's a button to, i believe, enter recovery but all it does is delay booting into android
<alatnet>
along with another button that, i assume, is to flash firmware or something...
<Seppoz>
are u using original android provided by vendor?
<alatnet>
yes
<Seppoz>
then contact him
<alatnet>
at least i assume to be
<alatnet>
i did send an email
<Seppoz>
cant you caontact him and ask
<Seppoz>
ok
<alatnet>
nothing yet from the vendor
<alatnet>
if you are wondering, this is the vendor's site: http://giadapc.com/
<alatnet>
is there any tutorials on how to create android images for the a10?
<ssvb>
vishnup: it writes a set of parameters to stack, like 3 (dram type), 480 (likely dram clk) and the others
<ssvb>
vishnup: then it calls init_DRAM
<vishnup>
wait let me check once again
<ssvb>
the pointer to this data struct on stack is passed to init_DRAM in r1 register (the second init_DRAM function argument) and picked up there
<ssvb>
you could also try to call init_DRAM instead of mctl_init with your own dram parameters (call it with 2 arguments, set the first one to 0 and the second one to your dram_para struct pointer)
<ssvb>
if somebody does a complete analysis of the libdram code disassembly (it is really relatively small and simple), then A33 DRAM init code can be implemented
<vishnup>
ssvb: libdram was different :(. let me try with 480 MHzlibdram
<plaes>
ssvb: I have some that I managed to save from allwinner's recent u-boot git publish before they were removed
<plaes>
interested?
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<ssvb>
we only have moral/legal aspects to worry about, but no real technical challenges with libdram disassembly :)
<ssvb>
plaes: I don't have A33 hardware myself, but vishnup may be probably interested (unless he already has the same libdram blobs)
<melonipoika>
any ideas? I tried both using the sd image file and assembling the SD card image myself
<melonipoika>
same issue
<melonipoika>
i also tried my own build vs ready made binaries from openwrt snapshots
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<vishnup>
ssvb: I've same sun8iw5 libdram as that of plaes mentioned.
<vishnup>
passing dram_param to init_DRAM makes no difference
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<Seppoz>
so i have to enable something in the kernel to have /dev/pts and /dev/shm?
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* atsampson
peers happily at the pcDuino3 Nano's GMAC now working at a sensible speed, having applied the same GMAC_TX_DELAY tweak the BananaPi uses...
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<atsampson>
it would be nice to know why that's necessary, though; is there something unusual about the PHYs those two boards use?
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<nove>
atsampson: the answer is in the maillist, from the time that those patch was added to upstream uboot
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<nove>
jemk: don't look under vp8_enc directory, in this new open source licenses are only a detail
<wens>
huh?
<wens>
oh, libvpx....
<atsampson>
nove/wens: ah, that makes sense -- cheers :)
<atsampson>
I'll add a note to that effect to the wiki page for the board later
<plaes>
wouldn't it make sense to add some kind of property to devicetree so people wouldn't have to hack the source?
<ssvb>
vishnup: then, I guess, our priority would be to somehow get a working boot0 binary for a33
<ssvb>
vishnup: unlike libdram, it does not have named symbols, but it is not a big problem as long as it works
<ssvb>
vishnup: another possibility is that libdram might need some hardware block initialized before it is called
<ssvb>
vishnup: checking the boot0 code might help to confirm or debunk this
<nove>
jemk: they are using customs controls to pass the need info to the driver, instead of a custom bitstream format
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<nove>
plaes: is nice to have a example, but would be much nicer if was called libv4l-allwinner (with allwinner itself doing it)
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<wens>
rsb driver looks good
<plaes>
nove: I was implying at the GMAC issue
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<nove>
plaes: ok
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<nove>
that was the best answer that i could give, as i only give a quick glance at the maillist
<nove>
i remember that topic being talked, but not enough to give the wanted answer
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<atsampson>
plaes: it's actually dealt with by U-Boot now -- hansg added a flag you can set in the device config rather than needing to special-case it for the boards
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<plaes>
ah.. nice
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<premoboss>
hello guys, i need REAL randomical numbers. do A10/A20 have entropy generator in hardware?
<wens>
no
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<ssvb>
premoboss: well, the DRAM controller can be (ab)used to generate random data before it is initialized :-)
<premoboss>
ssvb, what do you mean?
<ssvb>
premoboss: certain dram parameters are auto-configured by the hardware, and the results are unfortunately not very deterministic
<premoboss>
ok
<flok420>
premoboss: there are usb sticks for doing so. or you could connect an arduino to it via eg i2c and then sample its adc pins
<ssvb>
premoboss: so it's possible to abuse it to fill a buffer with randomish data and then use it as a seed for a high quality PRNG
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<premoboss>
flok420, to use ADC is an oppion i thought about already, but it have a solution in A10/A20 was bertter
<premoboss>
sticks is better
<ssvb>
premoboss: But I'm not sure if abusing the dram controller would be an acceptable solution for you though :)
<premoboss>
ssvb, i thin no. i need a LOT of random. I think ti bet a sticks is faster then other solution
<flok420>
they usually start at 32kbit/s
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<Seppoz>
dont do that
<Seppoz>
dram content is way to predictable for random data
<Seppoz>
what exactly is it that you want to do?
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<interrobangd>
modified files after cloning the linux git repo? wtf!
<interrobangd>
want to checkout an older version but cant, because modified files
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<interrobangd>
git reset and git clean can not fix it
<interrobangd>
still modified files :s
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<interrobangd>
ok broken file system
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<ssvb>
Seppoz: FWIW, I'm not talking about the dram content
<ssvb>
Seppoz: it's about the dqs gating delay parameter, which given certain starting conditions may flip between a few states as a result of autodetection
<ssvb>
Seppoz: and the starting conditions can be adjusted
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<ssvb>
Seppoz: so in fact we can generate as much entropy as necessary
<ssvb>
Seppoz: within reasonable limits
<ssvb>
Seppoz: this randomness in autodetection results is in fact a headache for me :)
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