Re: [PATCH 2/2] arch: arm64: configs: Enable UBI and UBIFS

[Krzysztof Kozlowski]

On 24/06/2023 05:42, Lee, Kah Jing wrote:
>>>> So you miss init ramdisk.
>>> Currently we are using the bootargs to mount the rootfs from QSPI NOR
>> flash:
>>> [    0.000000] Kernel command line: earlycon panic=-1 ubi.mtd=1
>> root=ubi0:rootfs rootfstype=ubifs rw rootwait
>>> Is it possible to mount the ubifs rootfs with the ubifs=m config during boot?
>>
>> I think yes. rootfs devices are for example modules, so filesystem can be as
>> well.
> Was going through mtd ubifs page - http://www.linux-mtd.infradead.org/faq/ubifs.html
> Quoted: 'In order to mount UBIFS as the root file system, you have to compile 
> UBIFS into the kernel (instead of compiling it as a kernel module) and specify 
> proper kernel boot arguments and make the kernel mount UBIFS on boot.'

Why? Module loaded by initramfs would also understand cmdline arguments,
right?

Best regards,
Krzysztof