Just to close up this thread for completeness sake.

Icenowy suggested that I try booting with console on UART0 instead of UART2.
And that worked. I currently have working uboot started from sdcard.

Many thanks for that.

On Thursday, March 23, 2017 at 7:45:27 PM UTC+1, Jon Smirl wrote:
>
> On Thu, Mar 23, 2017 at 2:00 PM, Petar Dimitrijevic 
> <[email protected] <javascript:>> wrote: 
> > 
> > 
> > On Tuesday, March 21, 2017 at 4:06:56 PM UTC+1, Petar Dimitrijevic 
> wrote: 
> >> 
> >> Hi, 
> >> 
> >> I've received a V3s development board few days ago. It has an android 
> FW 
> >> with Camdroid installed booting from SPI NOR flash. 
> >> Picture of the board as well as the fex file are attached to this 
> message. 
> >> 
> >> 
> >> The SDK generates android image which can be programmed to the NOR 
> flash. 
> >> 
> >> However I'm unable to boot Linux. Currently I'm stuck at making u-boot 
> >> work. The SDK ships with 2011.09 Allwinner u-boot. 
> >> 
> >> I'm following 
> http://linux-sunxi.org/H3_Manual_build_howto#Building_u-boot 
> >> and http://linux-sunxi.org/SDK_build_howto. 
> >> When I copy the uboot images to the sdcard I get the following output 
> in 
> >> the serial console: 
> >> 
> >>> HELLO! BOOT0 is starting! 
> >>> get_ifm reg_val=7 
> >>> ===i2c gpio === 22777722 
> >>> PMU: axp version ok 
> >>> after set, dcdc2 =1100mv 
> >>> axp20 set dcdc2 success 
> >>> DRAM DRIVE INFO: V0.7 
> >>> DRAM Type = 2 (2:DDR2,3:DDR3,6:LPDDR2,7:LPDDR3) 
> >>> DRAM CLK = 408 MHz 
> >>> DRAM zq value: 000039bb 
> >>> DRAM size = 64 MB 
> >>> card boot number = 0 
> >>> card no is 0 
> >>> sdcard 0 line count 0 
> >>> [mmc]: mmc driver ver 2014-8-11 15:06:39 
> >>> [mmc]: ***Try SD card 0*** 
> >>> [mmc]: SD/MMC Card: 4bit, capacity: 3768MB 
> >>> [mmc]: vendor: Man 0002544d Snr 21ab4a86 
> >>> [mmc]: product: SA04G 
> >>> [mmc]: revision: 1.3 
> >>> [mmc]: ***SD/MMC 0 init OK!!!*** 
> >>> sdcard 0 init ok 
> >>> ERROR! NOT find the head of uboot. 
> >>> Jump to Fel. 
> >> 
> >> 
> >> I presume that u-boot0 can't find u-boot1 header. I've checked the 
> source 
> >> code and UBOOT_START_SECTOR_IN_SDMMC is 32800 which should correspond 
> to: 
> >>> 
> >>> # write u-boot 
> >>> dd if=u-boot.fex of=/dev/sdX bs=1k seek=16400 
> >> 
> >> 
> >> However it doesn't work. 
> >> 
> >> I've also tried booting with Icenowys mainline u-boot branch 
> >> https://github.com/Icenowy/u-boot-1/tree/v3s. 
> >> I've modified the LichePieZero DTS file to correspond to the board 
> pinout. 
> >> However I get no message on the console whatsoever. Tried booting both 
> >> from USB and SDcard. 
> >> 
> >> Digging through the commit messages for v3s mainline u-boot support 
> I've 
> >> noticed that SPL is disabled. Maybe that is the problem ? 
> >> 
> >> Does anyone have any idea on how to proceed ? I'd like to get this 
> board 
> >> up and running with mainline kernel so that I could port some stuff 
> over 
> >> from lichee. 
> >> 
> >> Any help is appreciated. 
> >> 
> >> Best, 
> >> Petar 
> > 
> > 
> > Yes and then it restarts SPL. However I can't yet figure out why it is 
> > happening. 
> > u-boot-sunxi-with-spl.bin builds just fine. Can't understand why it 
> fails to 
> > load. 
> > 
> > Clear the head first and then back to debugging I guess :) 
>
> If the image does not have the correct header, the ROM restarts the 
> boot process and trys again to find an image with the correct header. 
>
>
> > 
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>
>
> -- 
> Jon Smirl 
> [email protected] <javascript:> 
>

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