my custom board: CPLD connection am335x and nor flash.
nor flash is S70GL02GS (256MB).
The first step :am335x boot from uart and into "U-Boot#".
When I enter " protect off all" it shows that :Unknown command 'protect' - try 'help'
enter " erase all" shows "Unknown command 'erase' - try 'help' "
The second step:
I through a serial port loading uboot.bin and copy to the nor flash is failed.
I don't understand the working principle of CPLD.
When CPLD connection am335x and nor flash that: I don't know how to debug.