BBBW fail to start SPL via UART

General Discussion
1

Hello, i have 2 BBBW boards. Somehow one of it stops booting at all.

I tried to boot via UART - on working BBBW all is Ok (just for double check).
But failed one gives CCCC first, then i transfer u-boot-spl.bin via xmodem, hit
enter after completion - board is hanged. No activity, no U-boot SPL prompt.

It seems like internal ROM loader can’t start SPL. Please help with any hints.

Thanks, Ivan

2

I found the rootcause. My Eeprom on BBBW was corrupted, so MLO and u-boot
were not work correctly without a “magic number”. Fix is here..

So for security reason, i need to update u-boot to start regardless of Eeprom content.