Running a Mainline Kernel on an i.MX28 EVK Board

Document created by jesseg Employee on Aug 8, 2012Last modified by Jodi Paul on May 16, 2013
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The latest i.MX28 BSP provided by Freescale (10.12) is based on a 2.6.35 kernel.

 

If you want to use the latest and greatest kernel version from kernel.org, follow the steps below.

 

1. Get the mainline kernel:

git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git(this is only done once)

git checkout -b yourlocalbranch origin/master

 

2. Export the toolchain

PATH=/opt/freescale/usr/local/gcc-4.4.4-glibc-2.11.1-multilib-1.0/arm-fsl-linux-gnueabi/bin/:$PATH export PATH export CROSS_COMPILE=arm-none-linux-gnueabi- export ARCH=arm

 

3. Build the kernel

make mxs_defconfig

make uImage

sudo cp arch/arm/boot/uImage /tftpboot

(In this example /tftpboot is the directory used to send files via TFTP)

 

4. Kernel command line:

On U-boot change the following parameter of the kernel command line:

console=ttyAM0,115200

to

console=ttyAMA0,115200


5. On LTIB

You can still use LTIB to provide the root file system.

./ltib -c

Target System Configuration

Options ---->

Unselect

[] boot up with tty and login

If this option is selected the serial port will fail to open as it still uses ttyAM0 instead of ttyAMA0.

 

6. Boot the kernel via TFTP and mount the rootfs via NFS.

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