-------- 原始邮件 --------
主题：Re: [linux-sunxi] Optimus Board
发件人：RFat
收件人：linux-sunxi@googlegroups.com
抄送：yrz...@gmail.com,raan...@gmail.com
--Some progress to report:I finally managed to flash the Optimus Board (OB) through the USB 3. It is done using the PhoenixSuit and without installing the USB drivers (I found all the necessary software at PCDuino8 site). Despite not managing to install the usb driver on windows the PhoenixSuit managed to communicate to the board after doing one very important step: apparently the OB does not have a FEL button and what you need to do is enter the u-boot it loads (hitting any key right on boot time) and then running a command "efex" the device will suddenly be identified on windows and bingo.PCduino site have several interesting images: an android, a linux kernel which waits to boot from an sdcard (the board will not do this otherwise - or at least I didn't managed to get it to..), and well nothing less than a UBUNTU(!) which actually works with visual interface and everything (it says it is a buggy version - but still impressive). The command line says cubie so perhaps it comes from there?? There are no sources for these images.I hope this info may be useful to some of you.
On Friday, September 5, 2014 7:19:15 PM UTC+3, RFat wrote:Thanks for your reply. I still could not get any progress; I tired following the dd instruction you sent in the SDK page as well as two methods described in pcduino8 page. I also got some stuff from Merrii (as Jhon suggested). I published it in a newer post on this forum.The mmc does work once the android finish loading, so it may not be an incompatibility issue between the sdcard and the mmc controller - but who knows.I'll update if I have any news (and would appreciate any ideas..)Thanks again.
On Friday, September 5, 2014 6:52:56 PM UTC+3, Jon Smirl wrote:On Fri, Sep 5, 2014 at 11:33 AM, Chen-Yu Tsai <we...@csie.org> wrote:
> Hi,
>
> On Fri, Sep 5, 2014 at 8:44 AM, Jhon Yi <yrz...@gmail.com> wrote:
>> If this doesn't work, the only solution is to ask Merrii, or at least
>> let them provide one bootable sdcard then dd out the content and
>> search for the position.
>>
>> 2014-09-05 4:55 GMT+08:00 RFat <raa...@gmail.com>:
>>> Hi Jhon,
>>>
>>> Thanks for your suggestion. I tried:
>>> dd if=boot0_sdcard_sun9iw1p1.bin of=/dev/mmcblk0 bs=1024 seek=X
>>>
>>> where X = 0, 4, 8, ..
>
> See http://linux-sunxi.org/SDK_build_howto
>
>>> and the board never showed any response - it is just booting from the nand
>>> (I presume..). Was this what you were suggesting?
>
> For me, sometimes it responds, sometimes it doesn't.
> Maybe the mmc controller is picky about cards, or the I/O pins
> are undervolted. Without a user manual and schematics ATM,
> it is hard to tell.
I have had this problem on another CPU. Notes from that board....
100ohm series resistor on all of the MMC lines with 10K pull ups
>
> When I did get a response and boot0 was loaded, boot0 then complained
> it couldn't initialize mmc0, and halted.
>
>
> ChenYu
>
>>> If anyone else have a suggestion - I'll be grateful
>>>
>>>
>>>
>>> On Thursday, September 4, 2014 3:01:34 AM UTC+2, Jhon Yi wrote:
>>>>
>>>> I suggest that you'd better ask Merrii to give you the parameters.
>>>> Otherwise you could first try to dd the boot0 to a clean sd card from
>>>> 8kB and see if there is any print out from the serial port (just set
>>>
>>>
>>>>
>>>> the serial port of you computer to 115200n8), if not work, move up 4kB
>>>> every trial until you see the right output. Do the seem thing to uboot
>>>> begin from the end of boot0, until you find something meaningful. Plus
>>>> good luck.
>>>>
>>>> 2014-09-04 5:00 GMT+08:00 RFat <raa...@gmail.com>:
>>>> > Hi everyone,
>>>> >
>>>> > I just got the Optimus board (by Merrii). Seems like a nice hotrod..
>>>> >
>>>> > I am trying to get u-boot running from the sdcard and I saw the
>>>> > binaries:
>>>> >
>>>> > u-boot-sun9iw1p1.bin
>>>> > boot0_sdcard_sun9iw1p1.bin
>>>> >
>>>> > in the SDK that poped up recently (A80_SDK_20140728).
>>>> >
>>>> > I guess I should be DD-ing these files to the sdcard but I am not sure
>>>> > how.
>>>> > There must be specific values for the seek option -- does anyone have a
>>>> > clue
>>>> > (I am not sure whether I am asking a trivial or a hard question..)
>>>> >
>>>> > Moreover, this board does not have a FEL or U-boot buttons like other
>>>> > boards
>>>> > - will it always look for something readable in the sdcard and then
>>>> > moves on
>>>> > the the nand?
>>>> >
>>>> > I guess everyone is very excited about the availability of these A80
>>>> > boards
>>>> > and this mysterious SDK - the sunxi community is about to have crazy
>>>> > power
>>>> > from a crazily modest device (ah, the late 80's of Acron paid off..)
>>>> >
>>>> > Thanks!
>
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--
Jon Smirl
jons...@gmail.com
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