README
1How to use U-Boot on MYiR MYS-6ULX Single Board Computer
2--------------------------------------------------------
3
4- Configure and build U-Boot for MYS-6ULX iMX6ULL:
5
6 $ make mrproper
7 $ make myir_mys_6ulx_defconfig
8 $ make
9
10 This will generate SPL and u-boot-dtb.img images.
11
12Boot from MMC/SD:
13- The SPL and u-boot-dtb.img images need to be flashed into the micro SD card:
14
15 $ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
16 $ sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync
17
18- Boot mode settings:
19
20 Boot switch position: SW1 -> 0
21 SW2 -> 1
22 SW3 -> 0
23 SW4 -> 1
24
25Boot from NAND:
26- Boot the board using SD/MMC or Serial download and load the SPL into memory
27either from SD/MMC or TFTP.
28
29Default MTD layout is 512k(spl),1m(uboot),1m(uboot-dup),-(ubi)
30
31Flash SPL to NAND from SD/MMC,
32
33 $ ext4load mmc 0:2 $loadaddr SPL
34 $ nand erase.part spl
35 $ nandbcb init $loadaddr 0x0 $filesize
36
37Flash u-boot proper to NAND from SD/MMC,
38
39 $ ext4load mmc 0:2 $loadaddr u-boot-dtb.img
40 $ nand erase.part uboot
41 $ nand write $loadaddr uboot $filesize
42
43- Boot mode settings:
44
45 Boot switch position: SW1 -> 1
46 SW2 -> 0
47 SW3 -> 0
48 SW4 -> 1
49
50- Connect the Serial cable to UART0 and the PC for the console.
51
52- Reset the board using and U-Boot should boot from NAND.
53