After discussion on IRC with Fahad, it seems that u-boot binary being used can not easily load any boot scripts from the boot partition (unlike Linaro's u-boot which loads boot.scr). Since the used u-boot is proprietary, we can't really establish how to get it to take parameters we want to pass to it automatically.
We can only extend l-i-t to allow one to use u-boot commands to load the script manually, but I am not sure if that's the desired approach.
After discussion on IRC with Fahad, it seems that u-boot binary being used can not easily load any boot scripts from the boot partition (unlike Linaro's u-boot which loads boot.scr). Since the used u-boot is proprietary, we can't really establish how to get it to take parameters we want to pass to it automatically.
We can only extend l-i-t to allow one to use u-boot commands to load the script manually, but I am not sure if that's the desired approach.