U-Boot

U-Boot Guide

Download U-Boot

Upstream U-Boot

You can clone the u-boot repository by running:

git clone git://git.denx.de/u-boot.git

Alternatively you can use u-boot-rockchip instead which may with some patches not get in mainline:

git clone git://git.denx.de/u-boot-rockchip.git

Rockchp U-Boot

You can clone the u-boot repository by running:

git clone https://github.com/rockchip-linux/u-boot.git

Supported Devices

Upstream U-Boot support Rockchip SoCs:

RK3036, RK3188, RK3288, RK3328, RK3399

 

• RK3036 boards supported:

1. EVB RK3036 - use evb-rk3036 configuration
2. Kylin - use kylin_rk3036 configuration

• RK3288 boards supported:

1. EVB RK3288 - use evb-rk3288 configuration
2. Fennec RK3288 - use fennec-rk3288 configuration
3. Firefly RK3288 - use firefly-rk3288 configuration
4. Hisense Chromebook - use chromebook_jerry configuration
5. Miniarm RK3288 - use miniarm-rk3288 configuration
6. PopMetal RK3288 - use popmetal-rk3288 configuration
7. Radxa Rock 2 - use rock2 configuration
8. ASUS Tinker

• RK3188 boards supported:

1. Radxa Rock - use rock configuration

• RK3328 boards supported:

1. EVB RK3328 - use evb-rk3328 configuration

• RK3399 boards supported:

1. EVB RK3399 - use evb-rk3399 configuration

 

Configure U-Boot

First you need to chose a correct defconfig for your board;

When you have determined what <board_name> you want to build, configure:

make CROSS_COMPILE=arm-linux-gnueabi- <board_name>_defconfig

You may need to change the U-Boot function/feature support by modify the defconfig file or,

there is also menuconfig to play with settings if you feel like it:

make CROSS_COMPILE=arm-linux-gnueabi- menuconfig

 

Build U-Boot

Get a toolchain

If you haven't done so before, get a suitable toolchain installed and added to your PATH.

In Ubuntu 14.04, you can use below command to install cross compiler for armv7:

sudo apt-get install gcc-arm-linux-gnueabi

Or for ARM64

sudo apt-get install gcc-aarch64-linux-gnu

Build

For armv7:

make CROSS_COMPILE=arm-linux-gnueabi-

or for ARM64:

make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu-

In order to support debug in ARM DS-5, you may need option in make

CFLAGS='-gdwarf-3'