README
1U-Boot for the Congatec QMX6 boards
2
3This file contains information for the port of U-Boot to the Congatec
4QMX6 boards.
5
61. Building U-Boot
7------------------
8
9- Build U-Boot for Congatec QMX6 boards:
10
11$ make mrproper
12$ make cgtqmx6eval_defconfig
13$ make
14
15This will generate the following binaries:
16
17- SPL
18- u-boot.img
19
202. Flashing U-Boot in the SPI NOR
21---------------------------------
22
23Copy SPL and u-boot.img to the exported TFTP directory of the
24host PC (/tftpboot , for example).
25
26=> sf probe
27
28=> setenv serverip <server_ip_address>
29
30=> setenv ipaddr <board_ip_address>
31
32=> tftp 0x12000000 SPL
33
34=> sf erase 0x0 0x10000
35
36=> sf write 0x12000000 0x400 0x10000
37
38=> tftp 0x12000000 u-boot.img
39
40=> sf erase 0x10000 0x70000
41
42=> sf write 0x12000000 0x10000 0x70000
43
44Reboot the board and the new U-Boot should come up.
45
463. Booting from the SD card
47---------------------------
48
49- Flash the SPL image into the SD card:
50
51sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
52
53- Flash the u-boot.img image into the SD card:
54
55sudo dd if=u-boot.img of=/dev/mmcblk0 bs=1k seek=69; sync
56
57- Insert the SD card into the big slot.
58
59The boot medium of Congatec QMX6 boards is the SPI NOR flash, so boot
60the board from SPI first.
61
62It is also possible to boot from the SD card slot by using the 'bmode'
63command:
64
65=> bmode esdhc4
66
67And then the U-Boot from the big slot will boot.
68
69Note: If the "bmode" command is not available from your pre-installed U-Boot,
70these instruction will produce the same effect:
71
72=> mw.l 0x20d8040 0x3850
73=> mw.l 0x020d8044 0x10000000
74=> reset
75