Upgrade U-Boot

Upgrading U-Boot from Kernel Space

Copy the Debian U-Boot package to your board and install it.

1
2
3
$ sudo dpkg -i linux-u-boot-vim4-vendor_1.0.7-2019.01_arm64.deb
$ sync
$ sudo reboot

Upgrade U-Boot from U-Boot Console

Only for SoC Vendor eMMC U-Boot.

Using a Serial Tool, you can directly upgrade U-Boot from the U-Boot console.

The installed U-Boot is located at build/u-boot/fip/_tmp/u-boot.bin.signed.

  • Power on the board and enter the U-Boot console
  • Copy u-boot.bin.signed into an SD card or thumbdrive
  • Insert the SD card or thumbdrive into the board
  • Execute the following commands to upgrade U-Boot
1
2
kvim4#usb_update bootloader u-boot.bin.signed
kvim4#reboot

See Also

Build U-Boot