[yocto] Support UBI u-boot

[JH]

Hi Gabriele,

Thanks for the help.

On 2/8/20, Gabriele Zampieri <gabbla.malist at gmail.com> wrote:
> If you just want to run the menuconfig run
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
> and
> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- savedefconfig
> In any environment.

It does not seem the OE / Yocto build issue, rather than the u-boot
build issue.

I can build OE / Yocto to load my mx6ull_14x14_evk_nand_defconfig to
replace the original source
git/configs/mx6ull_14x14_evk_nand_defconfig.

The git/scripts/kconfig was able to run defconfig mode that
git/scripts/kconfig/conf.c and git/scripts/kconfig/confdata.c was able
to enable CONFIG_CMD_UBI and to write to the .config based on my
mx6ull_14x14_evk_nand_defconfig, but git/scripts/kconfig/conf.c and
git/scripts/kconfig/confdata.c were not able to generate
CONFIG_CMD_MTDPARTS (I could not find CONFIG_CMD_MTDPARTS when I made
menuconig from menu config either).

The git/cmd/Makefile requires CONFIG_CMD_MTDPARTS set up to run
mtdparts.c, without CONFIG_CMD_MTDPARTS, mtdparts.c was not compiled,
and other cmd source files were not compiled, thus missing all
dependencies for ubi (undefined reference).

Is it buggy in u-boot source downloaded from
https://source.codeaurora.org/external/imx/uboot-imx.git (commit
"8be98e9322040c655b9e5c9fb2c494e002e3fad9"), or is just my silly
stupidity to miss things?

Could anyone in u-boot source development help to comment our if
https://source.codeaurora.org/external/imx/uboot-imx.git (commit
"8be98e9322040c655b9e5c9fb2c494e002e3fad9") works for ubi or not? Or
what I could be missing?

Apologize to cc source contributors.

Thank you.

Kind regards,

- jh