U-Boot usage guidance (TBD)

This guidance is a supplement to u-boot usage.

If a network environment might not available, you can use U-Disk and uSD card as the media for u-boot development.

Burnning boot.img using USB-Disk

Copy the boot.img to a USB disk, the plug into your target device:

kvim# usb_update boot boot.img

Burnning boot.img using SD Card

Copy the boot.img to a USB disk, the plug into your target device:

kvim# sdc_update boot boot.img

Install new u-boot into eMMC via a SD card:

Ensure that file u-boot.bin has been copied to the root directory of SD card and run:

kvim# fatload mmc 0 1080000 u-boot.bin
kvim# store rom_write 1080000 0 100000

Erase specific partition

Example to erase boot partition :

kvim# store erase partition boot

or:

kvim# amlmmc erase boot

Resources: