View source for Linux Kernel 3.14.28.y


= Compiler =

We recommend to use IGEP i.MX6 Yocto Fido SDK to compile i.MX6 kernels

'''Download''' 

[http://downloads.isee.biz/pub/releases/sdk/poky-glibc-x86_64-isee-image-dev-cortexa9hf-vfp-neon-toolchain-1.8.sh IGEP i.MX6 Yocto Fido SDK ]

'''Install''' sdk

<pre> sh poky-glibc-x86_64-isee-image-dev-cortexa9hf-vfp-neon-toolchain-1.8.sh</pre>

Install target into default directory (/opt/poky/1.8)

= Build kernel from sources  =

'''Download''' the latest stable version sources and follow next steps: 

For clone linux-imx/

<pre>git clone git://git.isee.biz/pub/scm/linux-imx.git
cd linux-imx
git checkout remotes/origin/isee-imx_3.14.28.y-next -b isee-imx_3.14.28.y-next.local</pre>

Export environment variables: 
<pre>source /opt/poky/1.8/environment-setup-cortexa9hf-vfp-neon-poky-linux-gnueabi</pre>

'''Configure''' Linux kernel for IGEP devices. IGEP is ARM architecture based device. A generic configuration is provided for all IGEP machines, and can be used as the default by 

<pre> make ARCH=arm CROSS_COMPILE=arm-poky-linux-gnueabi- imx6_igep0046_defconfig</pre>

Then '''build''' the kernel, the kernel modules and the device tree files. The result will be an ''zImage'' file in arch/arm/boot directory. Execute: 

<pre> make ARCH=arm CROSS_COMPILE=arm-poky-linux-gnueabi- zImage modules dtbs</pre>

You can '''install''' the kernel modules to your target rootfs 

<pre> sudo make ARCH=arm CROSS_COMPILE=arm-poky-linux-gnueabi- INSTALL_MOD_PATH=[path to your target rootfs] modules_install</pre>

You can '''install''' the zImage to boot partition :

<pre> cp arch/arm/boot/zImage [path to your target boot]</pre>

You can '''install''' the IGEP SMARC i.MX6 DTBs to boot partition. You can choose the dtb you need to your machine:

<pre> cp arch/arm/boot/dts/imx6q-igep-base0040*.dtb  [path to your target boot]</pre>

= TI Wilink8 Backports =

Once you install kernel and module binaries in your rootfs You can download and compile WIFI and Bluetooth modules and applications:

Install dependencies:

<pre> sudo apt-get install lib32z1 </pre>

Download WIFI build-utilities:

<pre> git clone git://git.isee.biz/pub/scm/wilink8-wlan/build-utilites.git </pre>

Mount your SD card or rootfs and configure setup-env:

<pre>cd build-utilites/ </pre>

<pre>cp setup-env.sample setup-env  </pre>

Add SD or rootfs patch into ROOTFS environment variables and add linux-imx kernel source path into KERNEL_PATH variable

Download sources:

<pre>./build_wl18xx.sh init</pre>

Compile sources and install binaries:

<pre>./sudo_build_wl18xx.sh update R8.6_SP1 </pre>

During process appear the following error:

<pre> ERROR  [PATH ROOTFS]/lib/modules/3.14.28-1.0.0_ga+yocto+g34048c3/updates/drivers/net/wireless/ti/wl18xx/wl18xx.ko  Not found ! </pre>

wl18xx.ko is correctly installed. So don't take care of it. Now, your kernel has Wilink 8 support added

[[Category:Linux_Kernel]]