Edison¶
Build Instructions for U-Boot as main bootloader¶
Simple you can build U-Boot and obtain u-boot.bin:
$ make edison_defconfig
$ make all
Updating U-Boot on Edison¶
By default Intel Edison boards are shipped with preinstalled heavily patched U-Boot v2014.04. Though it supports DFU which we may be able to use.
Prepare u-boot.bin as described in chapter above. You still need one more step (if and only if you have original U-Boot), i.e. run the following command:
$ truncate -s %4096 u-boot.bin
Run your board and interrupt booting to U-Boot console. In the console call:
=> run do_force_flash_os
Wait for few seconds, it will prepare environment variable and runs DFU. Run DFU command from the host system:
$ dfu-util -v -d 8087:0a99 --alt u-boot0 -D u-boot.bin
Return to U-Boot console and following hint. i.e. push Ctrl+C, and reset the board:
=> reset