The fastboot feature sounds like an ideal approach!
I never used this u-boot feature! Can you point me to some good
possible directly related to the Allwinner SoC's ?
On Monday, 17 October 2016 15:28:00 UTC+2, Andre Przywara wrote:
> one thing I forgot ...
> On 17/10/16 14:18, Andre Przywara wrote:
> > Hi,
> > On 17/10/16 14:08, Ciprian Manea wrote:
> >> Hi Andre,
> >> Thanks for your answer!
> >> The thing is that there are a lot of libs&apps in the image and is
> >> bigger than the available RAM.
> >> If there's no way to flash the eMMC through the sunxi tools, is there a
> >> way to boot over an USB storage device
> >> and flash an image that is store on the USB storage to the eMMC ?
> > Yes, that's what I wanted to say in the first message.
> > You can either fully boot into Linux (for instance using an initrd,
> > root-over-NFS, root-on-SD card or root-on-USB) and do the flashing from
> > there. Or you do it from U-Boot as I described, with the same options,
> > bascially.
> Another popular possibility seems to be to use the fastboot feature in
> U-Boot: You boot into U-Boot using FEL, then switch to fastboot on your
> PC (and U-Boot) and do the rest of the flashing from there. This
> requires OTG functionality in U-Boot and I haven't tried this myself
> yet, but apparently there are a lot of happy users of this method.
> > If your image is bigger than the DRAM, you can still load in smaller
> > chunks in U-Boot and do the writing accordingly, though this sound
> > tedious to automate. I don't think U-Boot supports direct copying from
> > one medium to another.
> > Given that I think it might be easier to boot into Linux, because it
> > doesn't have that restriction (dd if=image.file of=/dev/mmcblk1) and is
> > also easier to automate.
> >> And there are the phoenix tools. Are these of any use for flashing
> >> Linux images?
> > I have no idea, and frankly don't really care ;-)
> > But since you are the second person in two weeks asking me that, I think
> > there is some case for providing some GUI wrapper or at least some
> > wrapper script around sunxi-fel to tackle that use case.
> > Cheers,
> > Andre.
> >> On Monday, 17 October 2016 12:49:36 UTC+2, Andre Przywara wrote:
> >> Hi Ciprian,
> >> On 17/10/16 11:13, Ciprian Manea wrote:
> >> >
> >> > I'm using the Sinlinx SinA33 dev board, I connected it to my dev
> >> > using the OTG cable, and I was able to boot it in the FEL mode.
> >> >
> >> > I used the sunxi tools (sunxi-fel more specifically ) to get BROM
> >> > version and boot the board over usb.
> >> > But is there a way to flash the onboard eMMC over the usb, using
> >> > sunxi tools ?
> >> Not that I am aware of, and not sure if it's worth to pull in a MMC
> >> driver via FEL (like we do with the much smaller SPI NOR flash
> >> What I did last week was booting into U-Boot via FEL and using the
> >> command there to write the eMMC.
> >> You can get data in via TFTP, USB storage (pen drive) or reading
> >> from an
> >> SD card, for instance. Of course you can also load the image via
> >> This works easily when the amount to flash is not overly big (read:
> >> fits
> >> in DRAM easily).
> >> So you do something like:
> >> # tftpboot 0x50000000 emmc.img
> >> # mmc write 0x50000000 0 <nr of sectors>
> >> I think you can even automate this by some U-Boot environment magic
> >> think sunxi-fel gained something for this lately).
> >> I also enabled the md5sum command (which required some build system
> >> changes) to make sure the transfer and flashing was sane.
> >> Cheers,
> >> Andre.
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