[U-Boot-Users] timeout while waiting for opcode fetch?

when i do reset and then go in BDI2000, sometimes the seial_puts in board_init_r output corretly, sometimes not.

if output correctly, i can type halt in BDI2000 to see it's info but if not output correctly, type halt it will give these strings in BDI2000

# Timeout while waiting for opcode fetch *** TARGET: processing debug mode entry failed # Timeout while waiting for opcode fetch