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- How to use U-Boot on MYiR MYS-6ULX Single Board Computer
- --------------------------------------------------------
- - Configure and build U-Boot for MYS-6ULX iMX6ULL:
- $ make mrproper
- $ make myir_mys_6ulx_defconfig
- $ make
- This will generate SPL and u-boot-dtb.img images.
- Boot from MMC/SD:
- - The SPL and u-boot-dtb.img images need to be flashed into the micro SD card:
- $ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
- $ sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync
- - Boot mode settings:
- Boot switch position: SW1 -> 0
- SW2 -> 1
- SW3 -> 0
- SW4 -> 1
- Boot from NAND:
- - Boot the board using SD/MMC or Serial download and load the SPL into memory
- either from SD/MMC or TFTP.
- Default MTD layout is 512k(spl),1m(uboot),1m(uboot-dup),-(ubi)
- Flash SPL to NAND from SD/MMC,
- $ ext4load mmc 0:2 $loadaddr SPL
- $ nand erase.part spl
- $ nandbcb init $loadaddr 0x0 $filesize
- Flash u-boot proper to NAND from SD/MMC,
- $ ext4load mmc 0:2 $loadaddr u-boot-dtb.img
- $ nand erase.part uboot
- $ nand write $loadaddr uboot $filesize
- - Boot mode settings:
- Boot switch position: SW1 -> 1
- SW2 -> 0
- SW3 -> 0
- SW4 -> 1
- - Connect the Serial cable to UART0 and the PC for the console.
- - Reset the board using and U-Boot should boot from NAND.
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