Revision as of 15:37, 1 February 2013

UART recovery boot

1. Make sure the BOOT mode is set to UART. 2. Connect to the debug UART with your computer and launch the serial terminal application

 picocom -b 115200 /dev/ttyUSB0 --send-cmd "sz -vv -X" --receive-cmd  "rz -vv  -X"

3. Start the board. When "CCCC" characters appear on terminal window, do:

 C-a C-s
 *** file: u-boot-spl.bin

4. Exit from picocom using C-a C-q, and relaunch picocom with

 picocom -b 115200 /dev/ttyUSB0 --send-cmd "sz -vv -Y" --receive-cmd  "rz -vv  -Y"

5. When "CCCC" characters appear on terminal window, do:

 C-a C-s
 *** file: u-boot.bin

6. Hitting any key to stop automatic boot, should present the U-Boot prompt.