/meta-warp-extras

Primary LanguageBitBake

OpenEmbedded demo extras layer for the i.MX7S Warp board

This layer provides demo extras and examples for the i.MX7S Warp board.

Dependencies

This layer depends on:

  • URI: git://git.yoctoproject.org/poky

    • branch: dunfell
    • layers: meta

  • meta-warp

    • branch: dunfell-3.1

Building image

A good starting point for setting up the build environment is is the official Yocto Project wiki.

Before attempting the build, the following metalayer git repositories shall be cloned into a location accessible to the build system and a branch listed below shall be checked out. The examples below will use /path/to/OE/ as a location of the metalayers.

Additional optional layers handled by means of dynamic layers:

  • git://github.com/openembedded/meta-openembedded.git (branch: dunfell)
  • git://git.openembedded.org/meta-python2 (branch: dunfell)

With all the source artifacts in place, proceed with setting up the build using oe-init-build-env as specified in the Yocto Project wiki.

In addition to the content in the wiki, the aforementioned metalayers shall be referenced in bblayers.conf in this order:

BBLAYERS ?= " \
   /path/to/OE/poky/meta \
   /path/to/OE/meta-python2 \
   /path/to/OE/meta-openembedded/meta-oe \
   /path/to/OE/meta-openembedded/meta-networking \
   /path/to/OE/meta-openembedded/meta-python \
   /path/to/OE/meta-mainline-common \
   /path/to/OE/meta-warp \
   /path/to/OE/meta-warp-extras \
   "

The following specifics should be placed into local.conf:

MACHINE = "warp"
DISTRO ?= "warplinux"

Both local.conf and bblayers.conf are included verbatim in full at the end of this readme.

Once the configuration is complete, a full demo system image suitable for evaluation can be built using:

$ bitbake warp-image-demo

Once the build completes, the images are available in:

tmp/deploy/images/warp/

The SD card image is specifically in:

warp-image-demo-warp.wic.xz

And shall be written to the SD card using dd:

$ unxz warp-image-demo-warp.wic.xz
$ dd if=warp-image-demo-warp.wic of=/dev/sdX bs=8M

Example local.conf

MACHINE = "warp"
DL_DIR = "/path/to/OE/downloads"
DISTRO ?= "warplinux"
PACKAGE_CLASSES ?= "package_rpm"
EXTRA_IMAGE_FEATURES = "debug-tweaks"
USER_CLASSES ?= "buildstats image-mklibs image-prelink"
PATCHRESOLVE = "noop"
BB_DISKMON_DIRS = "\
    STOPTASKS,${TMPDIR},1G,100K \
    STOPTASKS,${DL_DIR},1G,100K \
    STOPTASKS,${SSTATE_DIR},1G,100K \
    STOPTASKS,/tmp,100M,100K \
    ABORT,${TMPDIR},100M,1K \
    ABORT,${DL_DIR},100M,1K \
    ABORT,${SSTATE_DIR},100M,1K \
    ABORT,/tmp,10M,1K"
PACKAGECONFIG_append_pn-qemu-native = " sdl"
PACKAGECONFIG_append_pn-nativesdk-qemu = " sdl"
CONF_VERSION = "1"

Example bblayers.conf

# LAYER_CONF_VERSION is increased each time build/conf/bblayers.conf
# changes incompatibly
POKY_BBLAYERS_CONF_VERSION = "2"

BBPATH = "${TOPDIR}"
BBFILES ?= ""

BBLAYERS ?= " \
	/path/to/OE/poky/meta \
	/path/to/OE/meta-python2 \
	/path/to/OE/meta-openembedded/meta-oe \
	/path/to/OE/meta-openembedded/meta-networking \
	/path/to/OE/meta-openembedded/meta-python \
	/path/to/OE/meta-mainline-common \
	/path/to/OE/meta-warp \
	/path/to/OE/meta-warp-extras \
	"