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yocto

Last modified by Administrator on 2017/03/11 20:29

Download and install repo utility

To get the BSP you need to have repo installed and use it as:
Install the repo utility:

mkdir -pv ~/workdir/bin
curl http://commondatastorage.googleapis.com/git-repo-downloads/repo  > ~/workdir/bin/repo
chmod a+x ~/workdir/bin/repo
PATH=${PATH}:~/workdir/bin

Yocto Project

Yocto Project 2.1

Getting the BSP

Every OS require different set of the installed packages. More information about Yocto requirements are in the document below (Host setup).

Freescale Yocto Project User's Guide

Download

Init yocto project

Download the BSP Yocto Project Environment

mkdir -pv ~/workdir/imx6/yocto/fsl-release-bsp-2.1
cd ~/workdir/imx6/yocto/fsl-release-bsp-2.1
git config --global user.name "Your Name"
git config --global user.email "Your Email"
git config --list
repo init -u git://git.freescale.com/imx/fsl-arm-yocto-bsp.git -b imx-4.1-krogoth

Init i.MX6 rex/tinyrex layer

Add rex/tinyrex support

mkdir -pv .repo/local_manifests/
cat > .repo/local_manifests/imx6rex.xml << EOF
<?xml version="1.0" encoding="UTF-8"?>
<manifest>

  <remote fetch="git://github.com/Voipac" name="voipac"/>

  <project remote="voipac" revision="master" name="meta-fsl-arm-voipac" path="sources/meta-fsl-arm-voipac">
    <copyfile src="voipac-setup.sh" dest="voipac-setup.sh"/>
  </project>
</manifest>
EOF

Sync

Sync repositories

cd ~/workdir/imx6/yocto/
ln -s fsl-release-bsp-2.1 fsl-release-bsp
cd ~/workdir/imx6/yocto/fsl-release-bsp
PATH=${PATH}:~/workdir/bin
repo sync

Configure

Add Voipac meta layer into BSP

source voipac-setup.sh
Now we can continue with building images.

Yocto Project 2.0

Getting the BSP

Every OS require different set of the installed packages. More information about Yocto requirements are in the document below (Host setup).

Freescale Yocto Project User's Guide

Download

Init yocto project

Download the BSP Yocto Project Environment

mkdir -pv ~/workdir/imx6/yocto/fsl-release-bsp-2.0
cd ~/workdir/imx6/yocto/fsl-release-bsp-2.0
git config --global user.name "Your Name"
git config --global user.email "Your Email"
git config --list
repo init -u git://git.freescale.com/imx/fsl-arm-yocto-bsp.git -b imx-4.1.15-1.0.0_ga

Init i.MX6 rex/tinyrex layer

Add rex/tinyrex support

mkdir -pv .repo/local_manifests/
cat > .repo/local_manifests/imx6rex.xml << EOF
<?xml version="1.0" encoding="UTF-8"?>
<manifest>

  <remote fetch="git://github.com/Voipac" name="voipac"/>

  <project remote="voipac" revision="refs/tags/v2.1" name="meta-fsl-arm-voipac" path="sources/meta-fsl-arm-voipac">
    <copyfile src="voipac-setup.sh" dest="voipac-setup.sh"/>
  </project>
</manifest>
EOF

Sync

Sync repositories

cd ~/workdir/imx6/yocto/
ln -s fsl-release-bsp-2.0 fsl-release-bsp
cd ~/workdir/imx6/yocto/fsl-release-bsp
PATH=${PATH}:~/workdir/bin
repo sync

Configure

Add Voipac meta layer into BSP

source voipac-setup.sh
Now we can continue with building images.

Yocto Project 1.7

Getting the BSP

Every OS require different set of the installed packages. More information about Yocto requirements are in the document below (Host setup).

Freescale Yocto Project User's Guide

Download

Init yocto project

Download the BSP Yocto Project Environment

mkdir -pv ~/workdir/imx6/yocto/fsl-release-bsp-1.7
cd ~/workdir/imx6/yocto/fsl-release-bsp-1.7
git config --global user.name "Your Name"
git config --global user.email "Your Email"
git config --list
repo init -u git://git.freescale.com/imx/fsl-arm-yocto-bsp.git -b imx-3.14.28-1.0.1_patch

Init i.MX6 rex/tinyrex layer

Add rex/tinyrex support

mkdir -pv .repo/local_manifests/
cat > .repo/local_manifests/imx6rex.xml << EOF
<?xml version="1.0" encoding="UTF-8"?>
<manifest>

  <remote fetch="git://github.com/Voipac" name="voipac"/>

  <project remote="voipac" revision="v1_3_patch" name="meta-fsl-arm-voipac" path="sources/meta-fsl-arm-voipac">
    <copyfile src="voipac-setup.sh" dest="voipac-setup.sh"/>
  </project>
</manifest>
EOF

Sync

Sync repositories

cd ~/workdir/imx6/yocto/
ln -s fsl-release-bsp-1.7 fsl-release-bsp
cd ~/workdir/imx6/yocto/fsl-release-bsp
PATH=${PATH}:~/workdir/bin
repo sync

Configure

Add Voipac meta layer into BSP

source voipac-setup.sh
Now we can continue with building images.

Building images

Build process may fail. Workaround session contains few workaround for commonly observed failures.
cd ~/workdir/imx6/yocto/fsl-release-bsp

Supported machines (Production)

imx6-openrexbasic
imx6-openrexmax
imx6-openrexmax4g
imx6-openrexultra
imx6-rexbasic
imx6-rexpro
imx6-rexultra
imx6-tinyrexlite
imx6-tinyrexbasic
imx6-tinyrexpro
imx6-tinyrexmax
imx6-tinyrexmax4g
imx6-tinyrexultra

Supported machines (Prototypes)

imx6dl-rex
imx6s-tinyrex
imx6q-tinyrex

Supported distros (Freescale)

fsl-imx-x11 - Only X11 graphics
fsl-imx-wayland - Wayland weston graphics
fsl-imx-xwayland - Wayland graphics and X11. X11 applications using EGL are not supported
fsl-imx-fb - Frame Buffer graphics - no X11 or Wayland

Console image

Setup and Build for Console image

MACHINE=<machine name> source setup-environment build-dir
MACHINE=<machine name> bitbake core-image-base

Toolchain

Setup and Build for Toolchain

MACHINE=<machine name> bitbake core-image-base -c populate_sdk

FSL GUI image

Setup and Build for FSL GUI image

Yocto 2.1

DISTRO=<distro name> MACHINE=<machine name> source fsl-setup-release.sh -b build-x11
DISTRO=<distro name> MACHINE=<machine name> bitbake fsl-image-gui

Yocto 2.0/1.7

MACHINE=<machine name> source fsl-setup-release.sh -b build-x11 -e x11
MACHINE=<machine name> bitbake fsl-image-gui

Voipac image

Setup and Build for Voipac image

MACHINE=<machine name> source setup-environment build-vpac
MACHINE=<machine name> bitbake vpac-image-full-cmdline
MACHINE=<machine name> bitbake vpac-image-full-cmdline -c populate_sdk

Output files

Output images and archives are stored here

~/workdir/imx6/yocto/fsl-release-bsp/build-dir/tmp/deploy/images
~/workdir/imx6/yocto/fsl-release-bsp/build-dir/tmp/deploy/sdk

Storing images to SD card

cd ~/workdir/imx6/yocto/fsl-release-bsp/build-dir/tmp/deploy/images/<machine name>
sudo dd if=<image name>.sdcard of=/dev/sd<partition> bs=1M && sync

Or

cd ~/workdir/imx6/yocto/fsl-release-bsp/build-dir/tmp/deploy/images/<machine name>
gunzip -c core-image-base-<machine name>.sdcard.gz | sudo dd of=/dev/sd<partition> bs=1M && sync

Build customization

Configuration files are created during setup (setup-environment, fsl-setup-release.sh).
By modifying local.conf files we can easily add custom features.  

Edit /workdir/imx6/yocto/fsl-release-bsp/build-x11/conf/local.conf

Yocto 2.1

CORE_IMAGE_EXTRA_INSTALL += " chromium libexif"
LICENSE_FLAGS_WHITELIST = "commercial"

IMAGE_INSTALL_append = " \
    video-input-demo \
    multimedia-demo \
    lpc-demo \
"


IMAGE_ROOTFS_EXTRA_SPACE_append += "+ 500000" 

Yocto 2.0/1.7

CORE_IMAGE_EXTRA_INSTALL += " chromium"
CORE_IMAGE_EXTRA_INSTALL += " packagegroup-fslc-gstreamer1.0-full"
LICENSE_FLAGS_WHITELIST = "commercial"

IMAGE_INSTALL_append = " \
    video-input-demo \
    multimedia-demo \
"

Workarounds

Yocto Project 2.1

Ubuntu 16.04

  • Preferred bootloader and kernel are overwritten during compilation fsl-image recipe

    fsl-image overwrite bootloader/kernel provided by meta-fsp-voipac.To remove this limitation replace '=' with '?='

Original version

meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_u-boot_mx6 = "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/bootloader_mx6 = "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/kernel_mx6 = "linux-imx"

Modified version

meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_u-boot_mx6 ?= "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/bootloader_mx6 ?= "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/kernel_mx6 ?= "linux-imx"
  • Web browser recipes are disabled (Comment out to enable)
meta-browser/recipes-browser/chromium/chromium_48.0.2548.0.bb:#PNBLACKLIST[chromium] ?= "BROKEN: fails to build with gcc-6"
meta-browser/recipes-browser/chromium/cef3_280796.bb:#PNBLACKLIST[cef3] ?= "BROKEN: fails to build with gcc-6"

Yocto Project 2.0

Ubuntu 16.04

  • Qemu-native linking failure

    Add BUILD_LDFLAGS_prepend_pn-qemu-native directive into build-dir/conf/local.conf
BUILD_LDFLAGS_prepend_pn-qemu-native = "-Wl,-rpath-link,/lib/x86_64-linux-gnu "
  • Preferred bootloader and kernel are overwritten during compilation fsl-image recipe

    fsl-image overwrite bootloader/kernel provided by meta-fsp-voipac.To remove this limitation replace '=' with '?='

Original version

meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_u-boot_mx6 = "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/bootloader_mx6 = "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/kernel_mx6 = "linux-imx"

Modified version

meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_u-boot_mx6 ?= "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/bootloader_mx6 ?= "u-boot-imx"
meta-fsl-bsp-release/imx/meta-sdk/conf/distro/include/fsl-imx-preferred-env.inc:PREFERRED_PROVIDER_virtual/kernel_mx6 ?= "linux-imx"

Yocto Project 1.7

Ubuntu 16.04

  • GCC compilator downgrade

    Ubuntu uses gcc-5 by default but some yocto (branch imx-3.14.28-1.0.1_patch) packages aren't compatible with this compiler so we need to switch to older one.
sudo apt-get install gcc-4.8 g++-4.8
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 100 --slave /usr/bin/g++ g++ /usr/bin/g++-4.8
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 50 --slave /usr/bin/g++ g++ /usr/bin/g++-5
sudo update-alternatives --config gcc
  • Qemu-native compilation failure

    Ubuntu uses newer version of the SDL libraries which are not compatible with yocto (branch imx-3.14.28-1.0.1_patch).
    This commands needs to be run after every "source *" command to commend out SDL support.
sed -i 's/^PACKAGECONFIG_append_pn-qemu-native/#PACKAGECONFIG_append_pn-qemu-native/' conf/local.conf
sed -i 's/^PACKAGECONFIG_append_pn-nativesdk-qemu/#PACKAGECONFIG_append_pn-nativesdk-qemu/' conf/local.conf 
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Created by Administrator on 2015/10/07 15:20

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