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emenlow: add LICENSE_FLAG_WHITELIST information to README

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The switchover to emgd neglected to add the user documentation needed
for whitelisting the video components.  This adds it and now matches
the other emgd-based BSPs.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
This commit is contained in:
Tom Zanussi 2013-01-24 15:19:36 -06:00 committed by Tom Zanussi
parent 229aa3f9a6
commit f9b9361eeb
1 changed files with 27 additions and 4 deletions
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31
meta-emenlow/README
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@ -82,11 +82,14 @@ common metadata shared between BSPs) e.g.:
yocto/meta-intel \
yocto/meta-intel/meta-emenlow \
The meta-emenlow layer contains support for the 'emenlow' machine
configuration, which makes use of the Intel-proprietary EMGD 1.16
graphics driver.
The meta-emenlow layer contains support for two different machine
configurations. These configurations are identical except for the fact
that the one prefixed with 'emenlow' makes use of the
Intel-proprietary EMGD 1.16 graphics driver, while the one prefixed
with 'emenlow-noemgd' does not.
To enable the emenlow layer, add the emenlow MACHINE to local.conf:
If you want to enable the layer that supports EMGD graphics add the
following to the local.conf file:
MACHINE ?= "emenlow"
@ -97,6 +100,11 @@ in your local.conf. For example:
LICENSE_FLAGS_WHITELIST = "license_emgd-driver-bin_1.16"
If you want to enable the layer that does not support EMGD graphics
add the following to the local.conf file:
MACHINE ?= "emenlow-noemgd"
You should then be able to build an emenlow image as such:
$ source oe-init-build-env
@ -106,6 +114,21 @@ At the end of a successful build, you should have a live image that
you can boot from a USB flash drive (see instructions on how to do
that below, in the section 'Booting the images from /binary').
NOTE: The 'emenlow' machine will include support for hardware video
acceleration via gstreamer if and only if the "commercial" string is
added to the the LICENSE_FLAGS_WHITELIST variable in your local.conf.
For example:
LICENSE_FLAGS_WHITELIST = "license_emgd-driver-bin_1.16 commercial"
The reason this is needed is to prevent the image from including
anything that might violate the license terms of the packages used to
implement the the video acceleration feature, such as gst-ffmpeg and
ffmpeg. As always, please consult the licenses included in the
specific packages for details if you use packages that require
particular LICENSE_FLAGS.
As an alternative to downloading the BSP tarball, you can also work
directly from the meta-intel git repository. For each BSP in the
'meta-intel' repository, there are multiple branches, one