We've developed a custom board based on the (SABRE Board for Smart Devices Based on the i.MX 6 Series Product Summary Page). The RAM is kept intact, however the pinout for peripherals has changed. We're booting from SD.
Currently we're not fully booting, but we'd like to move the default debug port from UART1 to UART4 first, we can't seem to find where to change this. Any help is deeply appreciated. After that we likely need help with the boot log.