Hi Andy,
On 2/6/20, Andy Pont andy.pont@sdcsystems.com wrote:
JH wrote...
I added NAND and UBIFS support to my Yocto layer machine config file:
UBOOT_CONFIG = "nand" UBOOT_CONFIG[nand] += "mx6ull_14x14_evk_config" UBOOT_CONFIG[nand] += "mx6ull_14x14_evk_nand_config" UBOOT_CONFIG[nand] += "ubi" UBOOT_CONFIG[nand] += "ubifs"
But my u-boot.imx-nand still could not support ubi:
=> ubi part rootfs Unknown command 'ubi' - try ‘help’
You need to start to read through the various sources to figure out for yourself what is going on!
Starting from the bottom, in U-Boot 2017.03 all of the command sources are in the “cmd” directory. The “ubi …” command are all in ubi.c. Reading cmd/Makefile shows that file gets added into the build if CONFIG_CMD_UBI is enabled.
You are right, that CONFIG_CMD_UBI is not enabled, but I could not find any conf or bb files I could change or enable CONFIG_CMD_UBI in meta-freescale layer.
Desperately, I hacked to run "make menuconfig" at U-Boot 2017.03 build directory, selected and enabled CONFIG_CMD_UBI and saved to .config file in that build directory, but then to run bitbake to build u-boot again, the .config was removed and replaced by an old one disabled CONFIG_CMD_UBI again.
Other people recommended to build u-boot in a standalone environment out of OE / Yocto build system. Since I have set up everything in OE / Yocto environment, I thought it could be easier if I could modify one line of u-boot config file in a recipe.
Any idea where is the recipe in meta-freescale to allow me to change / enable CONFIG_CMD_UBI?
Am I the only one unable to change u-boot config file in OE / Yoctu build? That makes me very sad :-(.
The next place to look is whether or not that is set in your defconfig for U-Boot or overwritten somewhere in a recipe in your Yocto build environment.
Yeah, I'll been searched all day, could not find a recipe Yocto build environment, I was told OE / Yocto does not have that stack and mechanism to set and change u-boot config, is it true?
Thank you very much.
Kind regards,
- jh