1 .. SPDX-License-Identifier: GPL-2.0+
2 .. sectionauthor:: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
7 Build Instructions for U-Boot as main bootloader
8 ------------------------------------------------
10 Simple you can build U-Boot and obtain u-boot.bin::
12 $ make edison_defconfig
15 Updating U-Boot on Edison
16 -------------------------
18 By default Intel Edison boards are shipped with preinstalled heavily
19 patched U-Boot v2014.04. Though it supports DFU which we may be able to
22 1. Prepare u-boot.bin as described in chapter above. You still need one
23 more step (if and only if you have original U-Boot), i.e. run the
26 $ truncate -s %4096 u-boot.bin
28 2. Run your board and interrupt booting to U-Boot console. In the console
31 => run do_force_flash_os
33 3. Wait for few seconds, it will prepare environment variable and runs
34 DFU. Run DFU command from the host system::
36 $ dfu-util -v -d 8087:0a99 --alt u-boot0 -D u-boot.bin
38 4. Return to U-Boot console and following hint. i.e. push Ctrl+C, and