README
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