[U-Boot] uboot and ZFS

[Marek Vasut <marex@denx.de>]

Dear Jorgen Lundman,

> >> At first glance, it would suggest that it should be feasible to add ZFS
> >> to uboot. But since I only have 'usage-level knowledge' of both boot
> >> systems, I am unaware of any show-stoppers.
> > 
> > Oh please study this and submit a patch, I believe at least Pavel (CCed)
> > would be glad to see it in :-)
> > 
> > 
> > Well the porting might be quite a long run indeed, but basic booting from
> > this should not be that hard. Besides the code would be fairy separate,
> > so it should be OK.
> 
> I took the existing CuBox u-boot, and compiled. Then found the EXT4 patches
> done by Siemens, and practised merging that in, compiling, and flashing the
> cubox. I can now boot EXT4. So that is encouraging.
> 
> Looking at GRUB zfs, it defines similar functions, namely open(), mount(),
> read(), close() and list(). So perhaps I can get something done. Is there
> quicker ways to test uboot than to flash the hardware every time?

If you correctly skip the HW init, you can try booting u-boot from u-boot ... 
(now, WD will hate me for bringing this up :-) ). It's possible, but unsupported 
operation. You might need to do some research on this matter :-)

> 
> What is the general patch acceptance around, I see ext4 wasn't accepted,
> what are the chances my patches would be?

Why wasn't ext4 accepted?

> 
> Lund

Best regards,
Marek Vasut