Hi Otavio,
First step was to add support in wic to generate rootfs images only
from packages out of bitbake environment.
To test this functionality was chosen to generate ramdisk images for
now. We have plans to extend the U-Boot plugin in order to generate other types
of rootfs images.
Thanks,
Adrian
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf
> Of Otavio Salvador
> Sent: Thursday, June 12, 2014 5:02 PM
> To: [email protected]
> Cc: Patches and discussions about the oe-core layer
> Subject: Re: [OE-core] [PATCHv2 1/2] Add wic support to generate rootfs
> image for uboot
>
> Hello,
>
> On Thu, Jun 12, 2014 at 5:43 AM, <[email protected]> wrote:
> > From: Adrian Calianu <[email protected]>
> >
> > Add support in wic to build ramdisk uboot images from list of packages
> > or from an existing rootfs folder.
> >
> > Providing the list of packages starting with XXX-core-boot
> > package(into wks file) will generate an rootfs image for uboot out of
> bitbake.
> > There is also possible to combine an existing/application rootfs with
> > a list of packages that can be installed but the user must take care
> > to provide a basic core boot rootfs or XXX-core-boot package and
> reporul(wic.conf).
> >
> > Some prerequisites are required for this new build setup:
> > ../poky/scripts/lib/image/config/wic.conf
> > [create]
> > arch=target_arch (example: powerpc, arm, x86) pkgmgr=opkg
> > repourl=http://example.distro/p2020rdb/ipk/all
> > http://example.distro/p2020rdb/ipk/p2020rdb
> > http://example.distro/p2020rdb/ipk/ppce500v2
> >
> > 1) Build an rootfs image from an existing bitbake build:
> > wic create ../poky/scripts/lib/image/canned-wks/uboot.wks -e
> > core-image-minimal -o .../output
> >
> > 2) Build an rootfs image from an existing rootfs and native_sysroot:
> > wic create ../poky/scripts/lib/image/canned-wks/uboot.wks -r
> > .../path_to_rootfs -n .../path_to_native_sysroot -o .../output
> >
> > 3) Build an rootfs image only from a package list (on wks file):
> >
> > Add the package list to be installed as rootfs on
> ../poky/scripts/lib/image/canned-wks/uboot.wks:
> > %packages
> > packagegroup-core-boot
> > pramfs-init
> > run-postinsts
> > packagegroup-core-ssh-dropbear
> > %end
> >
> > Generate rootfs image:
> > wic create ../poky/scripts/lib/image/canned-wks/uboot.wks -n
> > .../path_to_native_sysroot -o .../output
> >
> > Signed-off-by: Adrian Calianu <[email protected]>
>
> I really liked the idea and it is a nice step further but it is not clear to
> me how
> we'll "tell" wic about platform specific U-Boot installation like i.MX vs MXS
> where the layout of the uSD image is very different.
>
> --
> Otavio Salvador O.S. Systems
> http://www.ossystems.com.br http://code.ossystems.com.br
> Mobile: +55 (53) 9981-7854 Mobile: +1 (347) 903-9750
> --
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