diff options
Diffstat (limited to 'distribution/yocto-advanced/pres_yocto-advanced.tex')
| -rw-r--r-- | distribution/yocto-advanced/pres_yocto-advanced.tex | 244 |
1 files changed, 172 insertions, 72 deletions
diff --git a/distribution/yocto-advanced/pres_yocto-advanced.tex b/distribution/yocto-advanced/pres_yocto-advanced.tex index 881d21f..ee69d0b 100644 --- a/distribution/yocto-advanced/pres_yocto-advanced.tex +++ b/distribution/yocto-advanced/pres_yocto-advanced.tex @@ -7,7 +7,7 @@ \frametitle{Agenda} \begin{itemize} \item Using BSP layers (beaglebone) -\item Build a predefined image (sabrelite) +\item Build a predefined image (beaglebone) \item Creating a layer \item Define a distribution \item Create an image @@ -163,7 +163,6 @@ BBLAYERS ?= " \ /home/devel/poky/meta-yocto \ /home/devel/poky/meta-yocto-bsp \ /home/devel/poky/meta-ti \ - /home/devel/poky/meta-mini \ " \end{verbatim} \pause @@ -175,7 +174,6 @@ meta /home/devel/poky/meta 5 meta-yocto /home/devel/poky/meta-yocto 5 meta-yocto-bsp /home/devel/poky/meta-yocto-bsp 5 meta-ti /home/devel/poky/meta-ti 5 -meta-mini /home/devel/poky/meta-mini 5 \end{verbatim} \end{frame} @@ -225,9 +223,9 @@ to get a list of currently available machines configs: \begin{verbatim} poky/build-ti % grep -r '@NAME' ../meta*/conf/machine \end{verbatim} -beaglebone-black.conf - seems to be the one for our bord, so set +beaglebone.conf - seems to be the one for our bord, so set \begin{verbatim} -MACHINE ??= "beaglebone-black" +MACHINE ??= "beaglebone" \end{verbatim} in conf/local.conf \end{frame} @@ -271,8 +269,6 @@ Currently 4 running tasks (26 of 4459): \begin{frame}[fragile] \frametitle{first errors and warnings} \begin{verbatim} -WARNING: Host distribution "Debian-8.0" has not been validated with this version -of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution. ERROR: OE-core's config sanity checker detected a potential misconfiguration. Either fix the cause of this error or at your own risk disable the checker @@ -358,28 +354,17 @@ if the build is completed the image can be transfered to a sdcard: poky/build-ti % sudo fdisk /dev/mmcblk0 # create a bootable primary partition with about 100 MB and Windows vFat format # and a secondary partition with Linux Ext format -poky/build-ti % sudo mkfs.vfat /dev/mmcblk0p1 -poky/build-ti % sudo dd \ -if=tmp/deploy/images/beaglebone-black/qt4e-demo-image-beaglebone-black.ext3 \ - of=/dev/mmcblk0p2 bs=1M -poky/build-ti % sudo mount /dev/mmcblk0p2 /mnt -poky/build-ti % sudo tar xzf tmp/deploy/images/modules-beaglebone-black.tgz -C \ - /mnt -poky/build-ti % sudo umount /mnt -\end{verbatim} -\end{frame} - -\begin{frame}[fragile] -\frametitle{flashing the image} +poky/build-ti % sudo mkfs.vfat -F 16 -n boot /dev/mmcblk0p1 +poky/build-ti % sudo mke2fs -j -L "root" /dev/mmcblk0p2 poky/build-ti % sudo mount /dev/mmcblk0p1 /mnt -poky/build-ti % sudo cp -a tmp/deploy/images/beaglebone-black/MLO \ - /dev/mmcblk0p1 /mnt -poky/build-ti % sudo cp -a tmp/deploy/images/beaglebone-black/u-boot* \ - /dev/mmcblk0p1 /mnt -poky/build-ti % sudo cp -a tmp/deploy/images/beaglebone-black/zImage \ - /dev/mmcblk0p1 /mnt -poky/build-ti % sudo cp -a tmp/deploy/images/beaglebone-black/*.dtb \ - /dev/mmcblk0p1 /mnt +poky/build-ti % sudo cp -a tmp/deploy/images/beaglebone/MLO-beaglebone \ + /mnt/MLO +poky/build-ti % sudo cp -a tmp/deploy/images/beaglebone/u-boot-beaglebone.img \ + /mnt/u-boot.img +poky/build-ti % sudo umount /mnt +poky/build-ti % sudo mount /dev/mmcblk0p2 /mnt +poky/build-ti % sudo tar xjf \ + tmp/deploy/images/qt4e-demo-image-beaglebone.tar.bz2 -C /mnt poky/build-ti % sudo umount /mnt \end{verbatim} \end{frame} @@ -409,6 +394,22 @@ poky/meta-mini % git commit -sam 'inital version' \end{verbatim} \end{frame} +\begin{frame}[fragile] +\begin{verbatim} +poky/meta-mini % cd ../build-ti +\end{verbatim} +edit 'conf/bblayers.conf': +\begin{verbatim} +BBLAYERS ?= " \ + /home/devel/poky/meta \ + /home/devel/poky/meta-yocto \ + /home/devel/poky/meta-yocto-bsp \ + /home/devel/poky/meta-ti \ + /home/devel/poky/meta-mini \ + " +\end{verbatim} +\end{frame} + \subsection{Define a distribution} \begin{frame} \frametitle{why define a distribution?} @@ -515,14 +516,14 @@ it can be used, to simplify image definitions \end{frame} \begin{frame}[fragile] -\frametitle{linutronix distribution} +\frametitle{minimal distribution} distros are defined in a layer, e.g. -meta-mini/conf/distro/linutronix.conf: +meta-mini/conf/distro/mini.conf: \begin{verbatim} -DISTRO = "linutronix" -DISTRO_NAME = "linutronix 1.0 (for foo devices)" +DISTRO = "mini" +DISTRO_NAME = "mini 1.0 (for foo devices)" DISTRO_VERSION = "1.0" -DISTRO_CODENAME = "bar" +DISTRO_CODENAME = "mal" SDK_VENDOR = "-linutronix" SDK_VERSION := "${@'${DISTRO_VERSION}'}" MAINTAINER = "Manuel Traut <manut@linutronix.de>" @@ -536,16 +537,16 @@ DISTRO_FEATURES_append = " opengl" \begin{frame}[fragile] \frametitle{add distro to git repo} \begin{verbatim} -poky/meta-mini % git add conf/distro/linutronix.conf -poky/meta-mini % git commit -sam 'add linutronix distro' +poky/meta-mini % git add conf/distro/mini.conf +poky/meta-mini % git commit -sam 'add mini distro' \end{verbatim} \end{frame} \begin{frame}[fragile] -\frametitle{use linutronix distro} +\frametitle{use mini distro} edit DISTRO var in conf/local.conf \begin{verbatim} -DISTRO ?= "linutronix" +DISTRO ?= "mini" \end{verbatim} \end{frame} @@ -561,32 +562,49 @@ packagegroup-core-ssh-dropbear: packagegroup-core-ssh-openssh: \end{verbatim} create the file -'meta-mini/recipes-bsp/linutronix-image/linutronix-image.bb' +'meta-mini/recipes-bsp/mini-image/mini-image.bb' \begin{verbatim} IMAGE_INSTALL += "openssh" inherit core-image \end{verbatim} to build the image, use: \begin{verbatim} -poky/build-ti % bitbake linutronix-image +poky/build-ti % bitbake mini-image \end{verbatim} \end{frame} +\subsection{Machines} \begin{frame}[fragile] - \frametitle{image features} -t.b.d. use IMAGE\_FEATURES -% http://www.yoctoproject.org/docs/1.6/ref-manual/ref-manual.html#ref-features-image +\frametitle{create a beaglebone-black machine config} +create the file 'meta-mini/conf/machine/beaglebone-black.conf': +\begin{verbatim} +#@TYPE: Machine +#@NAME: BeagleBone Black +#@DESCRIPTION: Machine configuration for the http://beagleboard.org/bone board + +require conf/machine/include/ti33x.inc -% http://www.yoctoproject.org/docs/1.6/dev-manual/dev-manual.html#usingpoky-extend-customimage-imagefeatures +IMAGE_FSTYPES += "ext3 tar.gz" +EXTRA_IMAGEDEPENDS += "u-boot" +SERIAL_CONSOLE = "115200 ttyO0" + +SDCARD_ROOTFS ?= "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ext3" + +SPL_BINARY = "MLO" +UBOOT_SUFFIX = "img" +UBOOT_MACHINE = "am335x_boneblack_config" +UBOOT_ENTRYPOINT = "0x80008000" +UBOOT_LOADADDRESS = "0x80008000" +\end{verbatim} \end{frame} \subsection{Writing recipes} \begin{frame}[fragile] \frametitle{adding a kernel} -create the file 'meta-mini/recipes-bsp/linux-sabrelite/linux-sabrelite\_3.16.bb': +create the file 'meta-mini/recipes-bsp/linux-vanilla/linux-vanilla\_3.18.5bb': \begin{verbatim} SECTION = "kernel" -DESCRIPTION = "Linux 3.16 for sabrelite" +DESCRIPTION = "Linux vanilla kernel" LICENSE = "GPLv2" KERNEL_IMAGETYPE = "uImage" @@ -594,45 +612,46 @@ inherit kernel require recipes-kernel/linux/linux-dtb.inc require recipes-kernel/linux/setup-defconfig.inc -COMPATILBE_MACHINE = "beaglebone-black" -KERNEL_DEVICETREE_beaglebone-black = "arch/arm/boot/dts/imx6q-sabrelite.dts" +COMPATILBE_MACHINE_beaglebone-black = "beaglebone-black" +KERNEL_DEVICETREE_beaglebone-black = "arch/arm/boot/dts/am335x-boneblack.dts" + +S = "${WORKDIR}/linux-${PV}" -S = "${WORKDIR}/git -BRANCH = "master" -SRCREV = "19583ca584d6f574384e17fe7613dfaeadcdc4a6" -PV = "3.16" -# cause a rebuild on new kernel version -MACHINE_KERNEL_PR_append = "d+gitr${SRCPV}" SRC_URI = " \ -git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux;protocol=git;branch=${BRANCH} \ +https://www.kernel.org/pub/linux/kernel/v3.x/linux-${PV}.tar.xz \ file://defconfig \ -" + +SRC_URI[md5sum] = "e7a985a243b7941b6bc6240fcbc797fc" +SRC_URI[sha256sum] = "be37dda8ea090525661d64e5c7fc8580f313b7f9ba8592e32120f1332bc57d71" + KERNEL_EXTRA_ARGS += "LOADADDR=${UBOOT_ENTRYPOINT}" -# to modify cmdline, use APPEND += "" + +do_configure_prepend () { + cp '${WORKDIR}/defconfig' '${S}/.config' \end{verbatim} \end{frame} \begin{frame}[fragile] \frametitle{adding a defconfig} copy your .config file to -'meta-mini/recipes-bsp/linux-sabrelite/files/beaglebone-black/defconfig' +'meta-mini/recipes-bsp/linux-vanilla/files/beaglebone-black/defconfig' \end{frame} \begin{frame}[fragile] \frametitle{using a specific kernel} add \begin{verbatim} -PREFERRED_PROVIDER_virtual/kernel = "linux-sabrelite" +PREFERRED_PROVIDER_virtual/kernel = "linux-vanilla" \end{verbatim} -to meta-mini/conf/distro/linutronix.conf +to meta-mini/machine/beaglebone-black.conf \end{frame} \begin{frame}[fragile] \frametitle{Providers} \begin{verbatim} ---8<- -my-kernel\_3.16.bb -- +--8<- meta/classos/kernel.bbclass -- PROVIDES += "virtual/kernel" ---8<------------------------ +--8<-------------------------------- \end{verbatim} PREFERRED\_PROVIDER\_virtual/kernel = "linux-yocto" @@ -642,7 +661,7 @@ PREFERRED\_PROVIDER\_virtual/kernel = "linux-yocto" \vspace{2em} also a preferred version can be set: -PREFERRED\_VERSION\_virtual/kernel = "3.16" +PREFERRED\_VERSION\_virtual/kernel = "3.18.5" \end{frame} \begin{frame} @@ -656,6 +675,97 @@ PREFERRED\_VERSION\_virtual/kernel = "3.16" \end{itemize} \end{frame} +\subsection{generate a sdcard image} +\begin{frame}[fragile] +\frametitle{sdcard generation} +create the file: 'meta-mini/classes/image\_sdcard.bbclass': +\begin{verbatim} +inherit image_types + +IMAGE_BOOTLOADER ?= "u-boot" + +# Handle u-boot suffixes +UBOOT_SUFFIX ?= "bin" +UBOOT_PADDING ?= "0" +UBOOT_SUFFIX_SDCARD ?= "${UBOOT_SUFFIX}" + +# Linux bootstream +IMAGE_DEPENDS_linux.sb = "virtual/kernel:do_deploy" + +# Boot partition volume id +BOOTDD_VOLUME_ID ?= "Boot ${MACHINE}" +# Boot partition size [in KiB] +BOOT_SPACE ?= "8192" +# Set alignment to 4MB [in KiB] +IMAGE_ROOTFS_ALIGNMENT = "4096" + +IMAGE_DEPENDS_sdcard = "parted-native:do_populate_sysroot \ + dosfstools-native:do_populate_sysroot \ + mtools-native:do_populate_sysroot \ + virtual/kernel:do_deploy \ + ${@d.getVar('IMAGE_BOOTLOADER', True) and d.getVar('IMAGE_BOOTLOADER', True) + ':do_deploy' or ''}" + +SDCARD = "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.sdcard" + +SDCARD_GENERATION_COMMAND_ti33x = "generate_ti_sdcard" + +generate_ti_sdcard () { + parted -s ${SDCARD} mklabel msdos + parted -s ${SDCARD} unit KiB mkpart primary fat32 ${IMAGE_ROOTFS_ALIGNMENT} $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED}) + parted -s ${SDCARD} unit KiB mkpart primary $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED}) $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED} \+ $ROOTFS_SIZE) + parted -s ${SDCARD} set 1 boot on + parted ${SDCARD} print + + BOOT_BLOCKS=$(LC_ALL=C parted -s ${SDCARD} unit b print \ + | awk '/ 1 / { print substr($4, 1, length($4 -1)) / 1024 }') + mkfs.vfat -n "${BOOTDD_VOLUME_ID}" -S 512 -C ${WORKDIR}/boot.img $BOOT_BLOCKS + + # copy files to /boot + mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/MLO-${MACHINE} ::/MLO + mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ::/u-boot.img + mmd -i ${WORKDIR}/boot.img ::/boot + mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${MACHINE}.bin ::/boot/${KERNEL_IMAGETYPE} + mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-am335x-boneblack.dtb ::/boot/am335x-boneblack.dtb + mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/uEnv.txt ::/uEnv.txt + + # Burn Partition + dd if=${WORKDIR}/boot.img of=${SDCARD} conv=notrunc seek=1 bs=$(expr ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync + dd if=${SDCARD_ROOTFS} of=${SDCARD} conv=notrunc seek=1 bs=$(expr ${BOOT_SPACE_ALIGNED} \* 1024 + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync +} + +IMAGE_CMD_sdcard () { + if [ -z "${SDCARD_ROOTFS}" ]; then + bberror "SDCARD_ROOTFS is undefined. To use sdcard image from Freescale's BSP it needs to be defined." + exit 1 + fi + + # Align boot partition and calculate total SD card image size + BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE} + ${IMAGE_ROOTFS_ALIGNMENT} - 1) + BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE_ALIGNED} - ${BOOT_SPACE_ALIGNED} % ${IMAGE_ROOTFS_ALIGNMENT}) + SDCARD_SIZE=$(expr ${IMAGE_ROOTFS_ALIGNMENT} + ${BOOT_SPACE_ALIGNED} + $ROOTFS_SIZE + ${IMAGE_ROOTFS_ALIGNMENT}) + + # Initialize a sparse file + dd if=/dev/zero of=${SDCARD} bs=1 count=0 seek=$(expr 1024 \* ${SDCARD_SIZE}) + + ${SDCARD_GENERATION_COMMAND} +} + +# The sdcard requires the rootfs filesystem to be built before using +# it so we must make this dependency explicit. +IMAGE_TYPEDEP_sdcard = "${@d.getVar('SDCARD_ROOTFS', 1).split('.')[-1]}" +\end{verbatim} +\end{frame} + +\begin{frame}[fragile] +\frametitle{configure machine to use sdcard imagetype} +add the following lines to 'meta-mini/conf/machine/beaglebone-black.conf': +\begin{verbatim} +IMAGE_CLASSES += "image_sdcard" +SDCARD_ROOTFS ?= "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ext3" +IMAGE_FSTYPES += "sdcard" +\end{verbatim} +\end{frame} + \begin{frame} \frametitle{adding an own application} \begin{itemize} @@ -767,16 +877,6 @@ do_install() { \end{verbatim} \end{frame} -\begin{frame} -\frametitle{use PR Service} -bla -\end{frame} - -\begin{frame} -\frametitle{adding a bootscript} -bla -\end{frame} - \begin{frame}[fragile] \frametitle{user and group configuration} use this in an image recipe: |