Create foxg20-script.bin u-Boot environment file

This article illustrates how to generate the foxg20-script.bin binary file used by uboot during the boot sequence.

foxg20-script.bin is a binary file generated saved on the first FAT16 partition of a bootable microSD for the FOX Board G20.

This files contains the environments variables used by u-Boot during the boot sequence and it's generated using the mkimage utility from a readable text file.

To install mkimage on your Ubuntu Linux PC type:

$ sudo apt-get install uboot-mkimage

Then create a text file called foxg20-script.txt and save on it the right u-Boot variable setting for the Linux distribution you are installing:

set bootargs 'bootargs=mem=64M console=ttyS0,115200 noinitrd root=/dev/mmcblk0p2 rw rootwait init=/sbin/init'
fatload mmc 0 0x20400000 uimage
bootm 0x20400000

set bootargs 'mem=64M console=ttyS0,115200 rootdelay=5 root=/dev/mmcblk0p2 rw rootfstype=reiserfs rootflags=data=writeback  init=/sbin/init nodevfs'
fatload mmc 0 0x20000000 gentoo_uimage
bootm 0x20000000

set bootargs 'mem=64M console=ttyS0,115200 root=/dev/mmcblk0p2 rootwait'
fatload mmc 0 0x20000000 openwrt-at91-uImage
bootm 0x20000000

generate the foxg20-script.bin binary file typing:

$ mkimage -C none -T script -n 'FOXG20 boot script' -d foxg20-script.txt foxg20-script.bin

Then copy it in the FAT16 partition of your microSD.