Update master branch of internal u-boot to be even with external u-boot.

This is in preparation for setting up copybara correctly.

Commits:
* Add README.md, CONTRIBUTING, LICENSEs.
* test disregard, this should fail.
* Revert "test disregard, this should fail."
* Improve README - link to gerrit, describe vim2 build process
* Update README.md to recommend passing CROSS_COMPILE via env

Change-Id: Ia277fd44f6a115103fed82943556c01f5c961f3e
Reviewed-on: https://turquoise-internal-review.googlesource.com/c/third_party/u-boot/+/237251
Reviewed-by: Eric Holland <hollande@google.com>
17 files changed
tree: 2fb2d91a34ce85044b79b88c5e42777bc5f0a730
  1. Licenses/
  2. CONTRIBUTING.md
  3. LICENSE
  4. README.md
README.md

SPDX-License-Identifier: GPL-2.0+

u-boot

This is a version of u-boot, modified to support Fuchsia on the Khadas vim2, vim3, and NXP imx8mevk boards.

The master branch in this repository is empty.

Please check out one of the platform specific branches, like vim2 or imx8mevk for access to the source.

u-boot uses the Gerrit code review system to review and accept patches. Our instance is located at [https://third-party-mirror-review.googlesource.com/]. Please take a look at the CONTRIBUTING file and at that link if you're interested.

Building vim2 Bootloader

To build the vim2 bootloader for Fuchsia:

Prerequisites - arm and aarch64 toolchains. On Debian/Ubuntu systems, for example:

apt-get install gcc-arm-none-eabi gcc-aarch64-linux-gnu
  1. Check out the vim2 branch
git checkout -b vim2 origin/vim2
  1. Configure the target
make kvim2_defconfig
  1. Build u-boot.bin
CROSS_COMPILE=aarch64-linux-gnu- make

You now have a u-boot.bin that you can flash to a target with using fastboot.