the yocto project
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The Yocto Project
embedded Linux
Yocto Project Poky
OLinuXino
GNU/Linux
(Qt, GTK+, EFL ...) Linux , , device treeBoot loader
embedded Linux
O (target) (host)
: device tree, Linux ,
,
, ,
root image
mbedded Linux
Config + Makefile : Buildroot, PTXdist, openWrt
(openWrt)
mbedded Linux
OpenEmbedded :Poky, Angstrom, Arago, Tizen, AGL, GENIVI
2002 - 2003
2004
Openembedded OpenZaurus
bitbake Openembedded
OpenedHand c Poky Linux
2006 - 2008
2008
2010
Intel OpenHand
Linux Foundation the Yocto Project
oe-core
2011
Bitbake
P
M BSP (Board Support Package)
Yocto Project?
Linux Foundation , embedded Linux .
Open source Yocto
Pseudo, Swabber
Eclipse plugin, application developer toolkit
GUI/Web UI
yocto kernel tooling -
Poky
, ...
Poky
Poky - , Yocto Project
Bitbake -
-
Poky = bitbake +
Yocto/OE
( OSV)UI (BSP)Yocto (meta-yocto)OpenEmbedded (oe-core),
Yocto Project Releases
6 month release cycle
Security patches and bug fixes one release back
Provides both a 'near current' and LTSI kernels
Yocto Project 2.0 Jethro
Yocto Project 1.8 Fido
Yocto Project 1.7 Dizzy
Yocto Project 1.6 Daisy
Yocto Project 1.5 Dora
Yocto Project 1.4 Dylan
Bitbake?
bitbake tizen-common-core-image-crosswalk -e | grep ^DISTRO_FEATURES
bitbake -s | grep foo
bitbake -c compile foo
bitbake -g core-image-minimal
bitbake foo
bitbake -c clean foo
bitbake?
OLinuXino
Open source hardware
A10/A13/A20 Allwinner Technology ARMv7 SoC
Sunxi
OlinuXino ? (1/3)
Poky:
meta-sunxi:
build:
git clone -b fido git://git.yoctoproject.org/poky.git
cd poky
git clone -b fido https://github.com/linux-sunxi/meta-sunxi.git
source oe-init-build-env
OlinuXino ? (2/3)
conf/local.conf:
conf/bblayers.conf:
MACHINE ??= "olinuxino-a20"PARALLEL_MAKE ?= "-j 12"BB_NUMBER_THREADS ?= "12"
BBLAYERS ?= " \ /home/leon/poky-olinuxino/meta \ /home/leon/poky-olinuxino/meta-sunxi \ /home/leon/poky-olinuxino/meta-yocto \
OlinuXino ? (1/3)
Poky:
meta-sunxi:
build:
git clone -b fido git://git.yoctoproject.org/poky.git
cd poky
git clone -b fido https://github.com/linux-sunxi/meta-sunxi.git
source oe-init-build-env
OlinuXino ? (3/3)
bitbake:
, ...
microSD dd bmaptool:
bitbake core-image-minimal
sudo umount /dev/sdXsudo dd if=tmp/deploy/images/olinuxino-a20/core-image-minimal-olinuxino-a20.sunxi-sdimg of=/dev/sdXsync
?
yocto-layer:
./scripts/yocto-layer create openfest
?
:
:
_.bb
SUMMARY = ""HOMEPAGE = ""LICENSE = ""LIC_FILES_CHKSUM = ""SRC_URI = ""SRC_URI[md5sum] = ""SRC_URI[sha256sum] = ""S = "${WORKDIR}/${PN}${PV}"inherit
?
.bbappend:
:
:
_.bbappend
FILESEXTRAPATHS_prepend := "{THISDIR}/${PN}:${PV}:"SRC_URI += "file://mypatch.patch"
SRC_URI += "file://my.conf"do_install_append() { install -m 644 ${WORKDIR}/my.conf ${D}${sysconfdir}}
?
, conf/bblayers.conf
, conf/local.conf:
IMAGE_INSTALL_append = " hello "
https://www.yoctoproject.org/documentation
http://www.openembedded.org/wiki/Getting_started
http://free-electrons.com/training/yocto/
http://layers.openembedded.org/layerindex/branch/master/layers/
https://www.qtdeveloperdays.com/2013/sites/default/files/presentation_pdf/Yocto%20Project,%20A%20Vehicle%20for%20Embedded%20Qt%20development.pdf
?
!