How to set GPIO output in/during AT91bootstrap?
I'm using Arm9 Atmel Sam9G25 with this Startup sequence : RomBOOT -> At91Boostrap -> U-Boot-> Linux
Because i want to measure the startup time I'd like to set a GPIO output when entering Bootstrap to 1 and setting the same Pin to 0 when entering the userspace.
I already implemented the sserspace setting but unfortunately I can't figure out, how to set those GPIO Pins in Bootstrap. Can anyone help me where to have an eye on ? Those search engines didn't help.