1Update from original Marvell U-Boot to mainline U-Boot: 2------------------------------------------------------- 3 4Generate the U-Boot image with these commands: 5 6$ make helios4_defconfig 7$ make 8 9The resulting image including the SPL binary with the 10full DDR setup is "u-boot-spl.kwb". 11 12Now all you need to do is copy this image on a SD card. 13For example with this command: 14 15$ sudo dd if=u-boot-spl.kwb of=/dev/sdX bs=512 seek=1 16 17Please use the correct device node for your setup instead 18of "/dev/sdX" here! 19 20Boot selection: 21--------------- 22 23Before powering up the board, boot selection should be done via the SW1 dip 24switch (0: OFF, 1: ON): 25 26 - SPI: 00010 27 - SD/eMMC: 00111 28 - SATA1: 11100 29 - UART: 11110 30 31Boot from UART: 32--------------- 33 34Connect the on-board micro-USB (CF Pro: CON11, CF Base: CON5) 35to your host. 36 37Set the SW1 DIP switches to UART boot (see above). 38 39Run the following command to initiate U-Boot download: 40 41 ./tools/kwboot -p -b u-boot-spl.kwb /dev/ttyUSBX 42 43Use the correct UART device node for /dev/ttyUSBX. 44 45When download finishes start your favorite terminal emulator 46on /dev/ttyUSBX. 47