[OE-core] [RESEND] bitbake.conf: fix ubi images creation

[Anders Darander]

* Denis Carikli <denis at eukrea.com> [110902 18:19]:
> Without that commit ubinize.cfg lack a volume name value,
>   and the related ubinize.cfg line looks like that:
>     vol_name=
>   which result in a broken ubi image,which after beeing flashed produce
>   the following error:
>     UBI error: vtbl_check: volume table check failed: record 0, error 11
>   wich result in a kernel panic because the rootfs can't be mounted.

I've recently spent some time debugging this very same issue, when
converting an on-going project from oe-dev to oe-core.

> Signed-off-by: Denis Carikli <denis at eukrea.com>

Acked-by: Anders Darander <anders at chargestorm.se>

> ---
>  meta/conf/bitbake.conf |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
> index a68be07..14ee90c 100644
> --- a/meta/conf/bitbake.conf
> +++ b/meta/conf/bitbake.conf
> @@ -382,6 +382,8 @@ IMAGE_BASENAME = "${PN}"
>  IMAGE_NAME = "${IMAGE_BASENAME}-${MACHINE}-${DATETIME}"
>  IMAGE_LINK_NAME = "${IMAGE_BASENAME}-${MACHINE}"
>  
> +UBI_VOLNAME ?= "${MACHINE}-rootfs"
> +
>  # This option allows for a percentage overage of the actual image size rather than a
>  # fixed extra space, this is space needed for initial startup and basic operations.
>  IMAGE_OVERHEAD_FACTOR ?= 1.3
-- 
Anders Darander
ChargeStorm AB