i.MX53 SODIMM PC Linux

This section shows basic steps how to compile a custom Linux kernel.

Building images

Set toolchain

Export toolchain variables for every related terminal session.

Set shell variables

LK_VERSION=3.12.13
#SW_VERSION=20140817
#SW_VERSION=20140909
#SW_VERSION=20150308
SW_VERSION=20151129
LK_VNAME=${LK_VERSION%[-.]*}

Download and extract source code

mkdir -pv ~/workdir/vmx53/kernel/
cd ~/workdir/vmx53/kernel
wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-${LK_VERSION}.tar.xz
tar -xvJf linux-${LK_VERSION}.tar.xz
mv linux-${LK_VERSION} linux-${LK_VNAME}.orig
cp -rv linux-${LK_VNAME}.orig linux-${LK_VNAME}.work

Download and apply Voipac patches

cd ~/workdir/vmx53/kernel/
wget http://downloads.voipac.com/files/i.MX53_SODIMM_PC-Development_kit/module/software/linux/sources/linux-${LK_VERSION}_vmx53_${SW_VERSION}.patch
wget http://downloads.voipac.com/files/i.MX53_SODIMM_PC-Development_kit/module/software/linux/sources/linux-${LK_VERSION}_vmx53_${SW_VERSION}.cfg
cd ~/workdir/vmx53/kernel/linux-${LK_VNAME}.work
patch -p1  < ../linux-${LK_VERSION}_vmx53_${SW_VERSION}.patch
cp ../linux-${LK_VERSION}_vmx53_${SW_VERSION}.cfg .config

Compile

Output files are called arch/arm/boot/zImage and arch/arm/boot/dts/imx53-vmx53-*.dtb .:

cd ~/workdir/vmx53/kernel/linux-${LK_VNAME}.work
#make ARCH=arm menuconfig
make -j4 zImage modules imx53-vmx53-557.dtb imx53-vmx53-668.dtb imx53-vmx53-779.dtb
#sudo make ARCH=arm INSTALL_MOD_PATH=/srv/nfs/vmx53-rootfs modules_install

Compile custom DTB file

cd ~/workdir/vmx53/kernel/linux-${LK_VNAME}.work
#Edit arch/arm/boot/dts/imx53-vmx53-779.dts
#Save 
make -j4 imx53-vmx53-779.dtb

Note: Editable files related to Voipac i.MX53_SODIMM_PC Modules:

• imx53.dtsi
• imx53-vmx53.dtsi
• imx53-vmx53-557.dts
• imx53-vmx53-668.dts
• imx53-vmx53-779.dts