Hi, On Fri, Sep 5, 2014 at 8:44 AM, Jhon Yi <[email protected]> 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 <[email protected]>: >> 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. 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 <[email protected]>: >>> > 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! -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
