Re: [yocto] How to select defconfig for kernel build with yocto/bitbake

Wed, 09 Jul 2014 05:42:52 -0700

bitbake -e produces the following output. I have listed the methods dealing with .config. 


do_kernel_configme() {
    echo "[INFO] doing kernel configme"
    export KMETA=${KMETA}

    if [ -n ${KCONFIG_MODE} ]; then
        configmeflags=${KCONFIG_MODE}
    else

        # If a defconfig was passed, use =n as the baseline, which is 
achieved

        # via --allnoconfig

        if [ -f 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/defconfig 
]; then

            configmeflags="--allnoconfig"
        fi
    fi


    cd 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git

PATH=/home/eich/yocto/poky/scripts:/home/eich/odroid/build/tmp/sysroots/x86_64-linux/usr/bin/armv7a-vfp-neon-poky-linux-gnueabi:/home/eich/odroid/build/tmp/sysroots/odroid-xu/usr/bin/crossscripts:/home/eich/odroid/build/tmp/sysroots/x86_64-linux/usr/sbin:/home/eich/odroid/build/tmp/sysroots/x86_64-linux/usr/bin:/home/eich/odroid/build/tmp/sysroots/x86_64-linux/sbin:/home/eich/odroid/build/tmp/sysroots/x86_64-linux/bin:/home/eich/yocto/poky/scripts:/home/eich/yocto/poky/bitbake/bin:/home/eich/ros_catkin_ws/install_isolated/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/home/eich/bin:/usr/local/java/jre1.7.0_55/bin:/home/eich/install/bin:/opt/toolchains/arm-eabi-4.6/bin:/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git/scripts/util

    configme ${configmeflags} --reconfig --output 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/linux-odroid_xu-standard-build 
standard odroid-xu

    if [ $? -ne 0 ]; then
        echo "ERROR. Could not configure odroid-xu-standard"
        exit 1
    fi


    echo "# Global settings from linux recipe" >> 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/linux-odroid_xu-standard-build/.config
    echo "CONFIG_LOCALVERSION="\"-custom\" >> 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/linux-odroid_xu-standard-build/.config


}


do_compile_kernelmodules() {
    unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
    if (grep -q -i -e '^CONFIG_MODULES=y$' .config); then

        oe_runmake -j 4 modules CC="arm-poky-linux-gnueabi-gcc 
-mno-thumb-interwork -marm" LD="arm-poky-linux-gnueabi-ld.bfd  "

    else
        bbnote "no modules to compile"
    fi

}

kernel_do_configure() {
    # fixes extra + in /lib/modules/2.6.37+
    # $ scripts/setlocalversion . => +
    # $ make kernelversion => 2.6.37
    # $ make kernelrelease => 2.6.37+

    touch 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/linux-odroid_xu-standard-build/.scmversion 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git/.scmversion


    # Copy defconfig to .config if .config does not exist. This allows
    # recipes to manage the .config themselves in do_configure_prepend().

    if [ -f 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/defconfig" 
] && [ ! -f 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/linux-odroid_xu-standard-build/.config" 
]; then
        cp 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/defconfig" 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/linux-odroid_xu-standard-build/.config"

    fi
    eval oe_runmake_call oldnoconfig || yes '' | oe_runmake oldconfig

    install -m 0644 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git/arch/arm/configs/odroidxu_ubuntu_defconfig 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/defconfig
    install -m 0644 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git/arch/arm/configs/odroidxu_ubuntu_defconfig 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git/.config


}


kernel_do_install() {
    #
    # First install the modules
    #    unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
    if (grep -q -i -e '^CONFIG_MODULES=y$' .config); then

        oe_runmake DEPMOD=echo 
INSTALL_MOD_PATH="/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image" 
modules_install
        rm 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/lib/modules/None/build"
        rm 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/lib/modules/None/source"

        # If the kernel/ directory is empty remove it to prevent QA issues

        rmdir --ignore-fail-on-non-empty 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/lib/modules/None/kernel"

    else
        bbnote "no modules to install"
    fi

    #

    # Install various kernel output (zImage, map file, config, module 
support files)

    #

    install -d 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/boot
    install -d 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/boot
    install -m 0644 arch/arm/boot/uImage 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/boot/uImage-None
    install -m 0644 System.map 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/boot/System.map-None
    install -m 0644 .config 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/boot/config-None
    install -m 0644 vmlinux 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/boot/vmlinux-None
    [ -e Module.symvers ] && install -m 0644 Module.symvers 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/boot/Module.symvers-None
    install -d 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/etc/modules-load.d
    install -d 
/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/etc/modprobe.d


    #
    # Support for external module building - create a minimal copy of the
    # kernel source tree.
    #
kerneldir=/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/image/usr/src/kernel
    install -d $kerneldir

    #
    # Store the kernel version in sysroots for module-base.bbclass
    #

    echo "None" > $kerneldir/kernel-abiversion

    #
    # Store kernel image name to allow use during image generation
    #


    echo 
"uImage--3.4.91+gitrAUTOINC+a26607bfa2-r0-odroid-xu-20140709123549" 
>$kerneldir/kernel-image-name


    #
    # Copy the entire source tree. In case an external build directory is
    # used, copy the build directory over first, then copy over the source
    # dir. This ensures the original Makefiles are used and not the
    # redirecting Makefiles in the build directory.
    #

    find . -depth -not -name "*.cmd" -not -name "*.o" -not -path 
"./Documentation*" -not -path "./source*" -not -path "./.*" -print0 | 
cpio --null -pdlu $kerneldir

    cp .config $kerneldir

    if [ 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git" 
!= 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/linux-odroid_xu-standard-build" 
]; then

        pwd="$PWD"

        cd 
"/home/eich/odroid/build/tmp/work/odroid_xu-poky-linux-gnueabi/linux-hardkernel/3.4.91+gitrAUTOINC+a26607bfa2-r0/git"
        find . -depth -not -path "./Documentation*" -not -path "./.*" 
-print0 | cpio --null -pdlu $kerneldir

        cd "$pwd"
    fi

    # Test to ensure that the output file and image type are not actually

    # the same file. If hardlinking is used, they will be the same, and 
there's

    # no need to install.

    ! [ arch/arm/boot/uImage -ef $kerneldir/uImage ] && install -m 0644 
arch/arm/boot/uImage $kerneldir/uImage

    install -m 0644 System.map $kerneldir/System.map-None

    # Dummy Makefile so the clean below works
        mkdir $kerneldir/Documentation
        touch $kerneldir/Documentation/Makefile

    #
    # Clean and remove files not needed for building modules.
    # Some distributions go through a lot more trouble to strip out
    # unecessary headers, for now, we just prune the obvious bits.
    #
    # We don't want to leave host-arch binaries in /sysroots, so
    # we clean the scripts dir while leaving the generated config
    # and include files.
    #

    oe_runmake -C $kerneldir CC="arm-poky-linux-gnueabi-gcc 
-mno-thumb-interwork -marm" LD="arm-poky-linux-gnueabi-ld.bfd  " clean 
_mrproper_scripts


    # hide directories that shouldn't have their .c, s and S files deleted
    for d in tools scripts lib; do
        mv $kerneldir/$d $kerneldir/.$d
    done


    # delete .c, .s and .S files, unless we hid a directory as .<dir>. 
This technique is

    # much faster than find -prune and -exec
    find $kerneldir -not -path '*/\.*' -type f -name "*.[csS]" -delete

    # put the hidden dirs back
    for d in tools scripts lib; do
        mv $kerneldir/.$d $kerneldir/$d
    done

    # As of Linux kernel version 3.0.1, the clean target removes
    # arch/powerpc/lib/crtsavres.o which is present in
    # KBUILD_LDFLAGS_MODULE, making it required to build external modules.
    if [ arm = "powerpc" ]; then

        cp -l arch/powerpc/lib/crtsavres.o 
$kerneldir/arch/powerpc/lib/crtsavres.o

    fi

    # Necessary for building modules like compat-wireless.
    if [ -f include/generated/bounds.h ]; then

        cp -l include/generated/bounds.h 
$kerneldir/include/generated/bounds.h

    fi
    if [ -d arch/arm/include/generated ]; then
        mkdir -p $kerneldir/arch/arm/include/generated/

        cp -flR arch/arm/include/generated/* 
$kerneldir/arch/arm/include/generated/

    fi

    # Remove the following binaries which cause strip or arch QA errors
    # during do_package for cross-compiled platforms
    bin_files="arch/powerpc/boot/addnote arch/powerpc/boot/hack-coff \
               arch/powerpc/boot/mktree scripts/kconfig/zconf.tab.o \
           scripts/kconfig/conf.o scripts/kconfig/kxgettext.o"
    for entry in $bin_files; do
        rm -f $kerneldir/$entry
    done


    # kernels <2.6.30 don't have $kerneldir/tools directory so we check 
if it exists before calling sed

    if [ -f $kerneldir/tools/perf/Makefile ]; then
        # Fix SLANG_INC for slang.h

        sed -i 's#-I/usr/include/slang#-I=/usr/include/slang#g' 
$kerneldir/tools/perf/Makefile

    fi

}





On 09.07.2014 14:29, Sathish Kumar Balasubramaniam -ERS, HCL Tech wrote:

Sorry, Markus.
Ignore my previous post. It has error.

I think you need to check the output of "bitbake -e <recipe name>" and see how 
the .config file is created for your recipe.
Based on that only we need to update the recipe.

Regards,
B.Sathish Kumar

-----Original Message-----
From: Sathish Kumar Balasubramaniam -ERS, HCL Tech
Sent: Wednesday, July 09, 2014 5:54 PM
To: Dr. Markus Eich; yocto@yoctoproject.org
Subject: RE: [yocto] How to select defconfig for kernel build with yocto/bitbake

Ok. Can you try the following instead of the content I gave before

KERNEL_DEFCONFIG = "odroidxu_ubuntu_defconfig"

kernel_do_configure_append() {
        install -m 0644 ${S}/arch/${ARCH}/configs/${KERNEL_DEFCONFIG} 
${WORKDIR}/defconfig
        install -m 0644 ${S}/arch/${ARCH}/configs/${KERNEL_DEFCONFIG} 
${S}/.config
}


Regards,
B.Sathish Kumar

-----Original Message-----
From: Dr. Markus Eich [mailto:markus.e...@dfki.de]
Sent: Wednesday, July 09, 2014 5:39 PM
To: Sathish Kumar Balasubramaniam -ERS, HCL Tech; yocto@yoctoproject.org
Subject: Re: [yocto] How to select defconfig for kernel build with yocto/bitbake

Thank you Sathish for the quick answer.

The recipes now copies odroidxu_ubuntu_defconfig to defconfig in the
workdir, but it still seems to be ignored.
Maybe I am missing some includes to make the .config from defconfig?

Using "make odroidxu_ubuntu_defconfig" using cross compiling (followed
by "make zImage") works fine, while bitbake virtual/kernel produces some
errors which are probably due to the wrong .config.


Cheers,

Markus





On 09.07.2014 13:33, Sathish Kumar Balasubramaniam -ERS, HCL Tech wrote:

Hi Markus,

Try adding the following to your recipe file

KERNEL_DEFCONFIG = "odroidxu_ubuntu_defconfig"

do_configure_prepend() {
          install -m 0644 ${S}/arch/${ARCH}/configs/${KERNEL_DEFCONFIG} 
${WORKDIR}/defconfig || die "No default configuration for ${MACHINE} / 
${KERNEL_DEFCONFIG} available."
}


Regards,
B.Sathish Kumar

-----Original Message-----
From: yocto-boun...@yoctoproject.org [mailto:yocto-boun...@yoctoproject.org] On 
Behalf Of Dr. Markus Eich
Sent: Wednesday, July 09, 2014 3:09 PM
To: yocto@yoctoproject.org
Subject: [yocto] How to select defconfig for kernel build with yocto/bitbake

Dear all,

I work on the process to compile odroid xu kernel with yocto/bitbake

In the kernel sources (from hardkernel) I have the corresponding
defconfig file, i.e. in the git folder
/arch/arm/configs/odroidxu_ubuntu_defconfig.

How can I tell bitbake in my recipe to use "odroidxu_ubuntu_defconfig"?

My recipe looks as follow:

===
require recipes-kernel/linux/linux-yocto.inc

KERNEL_IMAGETYPE = "uImage"

COMPATIBLE_MACHINE = "odroid-xu"

LINUX_VERSION = "3.4.91"
LINUX_VERSION_EXTENSION = "-custom"

FILESEXTRAPATHS_prepend := "${THISDIR}/linux-hardkernel-3.4:"

S = "${WORKDIR}/git"

# from where to fetch the kernel
KERNEL_REPO_OWNER ??= "hardkernel"
KERNEL_REPO_URI ??= "git://github.com/${KERNEL_REPO_OWNER}/linux.git"
KBRANCH = "odroidxu-3.4.y"

SRCREV = "${AUTOREV}"

KV = "3.4.91"
PV = "${KV}+gitr${SRCPV}"
LOCALVERSION ?= ""


SRC_URI = " \
     ${KERNEL_REPO_URI};nocheckout=1;branch=${KBRANCH} \
"

PACKAGES =+ "kernel-headers"
FILES_kernel-headers = "${exec_prefix}/src/linux*"
===

Cheers,

Markus






--
Dr.-Ing. Markus Eich

 Senior Researcher
 Marine Inspection Robotics
 Space Robotics

 
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 Robotics Innovation Center
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