Read kernel from static UBI volume

Sascha Hauer s.hauer at pengutronix.de
Thu Oct 27 00:39:48 PDT 2016


On Thu, Oct 27, 2016 at 09:34:20AM +0200, Guillermo Rodriguez Garcia wrote:
> 2016-10-27 9:31 GMT+02:00 Sascha Hauer <s.hauer at pengutronix.de>:
> > On Thu, Oct 27, 2016 at 09:10:02AM +0200, Guillermo Rodriguez Garcia wrote:
> >> Hello all,
> >>
> >> I know Barebox can load files from UBIFS. However, is there support
> >> from booting a kernel directly from a static UBI volume?.
> >
> > bootm /dev/nand0.ubi.whatever should do.
> 
> That easy?
> 
> This is one of the reasons why I like barebox so much better than u-boot..
> 
> I assume this will just read the whole volume (as opposed to checking
> the zImage size and so on). Correct?

The bootm code only reads the actual image size.

> 
> Also will this do the UBI static volume CRC check?

You read a UBI volume using the UBI code which is more or less identical
to the Kernel, so I'd assume the code does whatever is necessary,
including the crc check.
I'm speaking a bit nebulous because I never used static UBI volumes
myself.

Sascha

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