Overview This README captures the steps that are required to build Yocto compatible Linux kernel, from github. The Linux build will include a kernel image, linux.img, the full image with symbols, vmlinux, and the address of labels, System.map, as well as a root file system rootfs.ext2. It will also include the kernel header files to allow the building of loadable modules. Use the following instructions to build everything in axm5516-sim.

Instruction 1. Create a build directory, and set and environment variable, YOCTO, to the full path.

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$ mkdir $ cd $ export YOCTO=`pwd` 1. Setup the Yocto base (Poky) environment Note: Please specify the http and https proxy, if required.

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$ $ $ $ $ $ $ $ $ $

cd $YOCTO mkdir Yocto cd Yocto git clone git://git.yoctoproject.org/poky.git cd poky git checkout danny git clone https://github.com/lsigithub/lsi_axxia_yocto_extras.git mv lsi_axxia_yocto_extras meta-lsi cd meta-lsi git checkout lsi_axxia_linux_7.8.1.1

1. Clone the Yocto linux kernel

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$ cd $YOCTO $ git clone https://github.com/lsigithub/lsi_axxia_yocto_public.git

This step will take a while. When complete, you should end up with a $YOCTO/lsi_axxia_yocto_public directory. 1. Create the build directory

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$ cd $YOCTO $ source poky/oe-init-build-env lsisim

This creates a new build directory lsisim, and automatically puts you into this directory. 1. Edit the conf/bblayers.conf file

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$ pwd (you should be at $YOCTO/lsisim) $ vi conf/bblayers.conf

Edit BBLAYERS as follows. Use the value of $YOCTO instead of $YOCTO. BBLAYERS ?= " \ $YOCTO/poky/m eta \ $YOCTO/poky/m eta-yocto \ $YOCTO/poky/m eta-yocto-bsp \

$YOCTO/poky/m eta-lsi \ " 1. Edit the conf/local.conf file.

$ vi conf/local.conf Make sure the following are set. BB_NUMBER_THREADS = "4" PARALLEL_MAKE = "-j 4" MACHINE = "lsisim " IMAGE_INSTALL_append += "openssh tcl perl" IMAGE_FSTYPES += "ext2" PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-custom " Other optional settings for saving disk space and build time: DL_DIR = "//downloads" SSTATE_DIR = "//sstate-cache" 1. Start the build

$ bitbake core-image-minimal 1. After the build completes, the rootfs (ext2) will be in the following. $YOCTO/lsisim/tmp/deploy/images/core-image-minimal-lsisim.ext2 2. To create the Linux image required by ASE, and the kernel header file archive, do the following. 1. mkdir $YOCTO/axm5516-sim-headers 2. cd $YOCTO/lsisim/tmp/work/lsisim-poky-linux-gnueabi/linux-yocto-custom-rt3.4.28+git1+eb15727b3e29216d11d7b409b62da4dc62374cdc-r0/linux-lsisim-standard-build 3. tar chzf - . | ( cd ~/Yocto/axm5516-sim-headers && tar xzvf - ) 4. cd $YOCTO/axm5516-sim-headers 5. export PATH=$YOCTO/lsisim/tmp/sysroots/i686-linux x86_64-linux/usr/bin/armv7a-vfp-neon-poky-linuxgnueabi:$PATH 6. export CROSS_COMPILE=arm-poky-linux-gnueabi7. export ARCH=arm 8. cd arch/arm/boot/fmboot 9. make The Linux image for the ASE is linux.img

Overview Instruction - GitHub

IMAGE_FSTYPES += "ext2". PREFERRED_PROVIDER_virtual/kernel = "linux-yocto-custom". Other optional settings for saving disk space and build time:.

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