[PATCH] [RFC] tools: fitmount: fuse mount fit images

[selvamuthukumar v]

On Tue, Jun 23, 2020 at 11:47 PM Tom Rini <trini at konsulko.com> wrote:
>
> On Tue, Jun 23, 2020 at 06:01:38PM +0530, selvamuthukumar v wrote:
> > On Mon, Jun 15, 2020 at 11:15 PM Selva Muthukumar
> > <v.selvamuthukumar at gmail.com> wrote:
> > >
> > > Allow mounting of FIT images. If FIT images are used for firmware upgrade
> > > from linux, mouting can save space in comparison to using dumpimage.
> > >
> >
> > Any comments on this? Is there any other way to get FIT image
> > contents, without extracting it?
>
> Sorry for the delay.  For your program, there's a few things such as
> missing license header and being able to opt-in as otherwise we add a
> new build dependency for everyone.
>
> For getting FIT image contents, the existing dumpimage tool handles
> this.
>
dumpimage extracts image contents into new files. Current firmware
upgrade process in our product is:

1. FIT image has kernel and rootfs. Get new FIT image in tmpfs.
2. dumpimage to extract the FIT image in tmpfs.
3. Write kernel and rootfs in partitions.

many times step2 fails because there is not enough space in tmpfs. FIT
image and individual components need to be present in tmpfs. When we
mount the FIT image, it does not take extra space tmpfs.

Thanks.
Selva