Kontron AT8242 - Manual (Page 91)

Software Setup
75 AT8242
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3 – Complete the installation by copying all files in the storage directory of the board support package to
[OCTEON_SDK]/linux/embedded_rootfs/storage.
5.1.3 Embedded Linux
5.1.3.1 Embedded Filesystem And Init Script Customizations
The sample embedded linux filesystem shipped with the AT8242 is an initramfs. That means that any file can
be modified but will return to their original states after a Cavium NPU restart.
By default there is a flash partition that is automatically mounted to /mnt. This partition can be used to have
permanent R/W storage space. All data stored in /mnt will be permanently saved to the flash (user_jffs2, /
dev/mtd3).
You can also create custom initialization script by adding this in the user_jffs2 partition (/mnt):
# mkdir /mnt/etc
# vi /mnt/etc/rc.local
Add your init code in this file (shell script).
# chmod +x /mnt/etc/rc.local
The script file /mnt/etc/rc.local will be executed at the end of each boot.
5.1.4 Building AT8242 Firmware Image
5.1.4.1 Preparation
From the root of OCTEON SDK directory, configure the SDK environment for OCTEON CN68XX device:
# source env-setup OCTEON_CN68XX
5.1.4.2 Building U-Boot Firmware
Go to OCTEON SDK bootloader directory:
# cd [OCTEON_SDK]/bootloader/u-boot
Select AT8242 board configuration:
# make kontron_t5311_config
Build U-boot firmware: