[yocto] [meta-chip] How to flash yocto's output into CHIP

[Valentin Le bescond]

I searched a bit more :

The sunxi-spl-with-ecc.bin is built using the spl-image-builder bin in the
CHIP-tools folder (found here :
https://github.com/NextThingCo/CHIP-tools.git)
I found a set of parameters (here : line 52 :
https://github.com/soderstrom-rikard/CHIP-tools/blob/chip/stable/chip-fel-flash.sh)
but I have no idea if it's right or wrong.
That would give us :
spl-image-builder -d -r 3 -u 4096 -o 1664 -p 16384 -c 1024 -s 64
sunxi-spl.bin sunxi-spl-with-ecc.bin

I found that the uboot-env.bin file is not used to flash the chip (using
chip-fel-flash.sh file).
But it should be easy to generate it as it is made with the "mkenvimage"
program that is found (an built by yocto) in the CHIP-uboot repo.

Still not flashing though.

I will look on the UART port of the chip for further tests. I hope to see
u-boot messages while flashing.



Le mar. 23 févr. 2016 à 21:09, Valentin Le bescond <
valentin.lebescond at gmail.com> a écrit :

> Hi,
>
> I'm wondering if anyone managed to flash the CHIP board with a
> (successful) yocto image build.
>
> I didn't succeed but here are the few things I found :
>
> Comparing the files expected in CHIP-tools/ and the ones available in
> Yocto deploy/image/chip/ I see some are missing in yocto :
> uboot-env.bin
> sunxi-spl-with-ecc.bin
> I tried using the ones downloaded with chip-update-firmware.sh but it
> doesn't work...
>
> While flashing, at some point, the chip (in FEL mode) disconnects the USB
> connection. If it goes well the chip reconnects as a ttyACM0. If it
> doesn't go well (which is my case), chip never shows up !
>
> If anyone managed to get the thing working please let me know. If not I am
> willing to try any idea you may have.
>
> Regards,
>
> Valentin
>
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