U-Boot 2015.07.y

under construction

Introduction

This article is for specific 2015.07.y U-Boot branch serie.
It is interesting read The bootloader U-Boot article previously.

On this 2015.07.y version, supported IGEP Processor Boards are:

• IGEP COM AQUILA 256 MB RAM (IGEP0033-RB11)
• IGEP COM AQUILA 512 MB RAM (IGEP0033-RB30)
• IGEP SMARC AM335x Lite
• IGEP SMARC AM335x

The currently supported IGEP Expansion Boards are as follows:

• IGEP AQUILA EXPANSION (BASE0033) for IGEP COM AQUILA
• IGEP SMARC EXPANSION (BASE0040) for IGEP SMARC AM335x

Compiler used

2015.07.y series has been compiled with gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf.

Download compiler:

wget --no-check-certificate http://releases.linaro.org/archive/15.05/components/toolchain/binaries/arm-linux-gnueabihf/gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf.tar.xz

Install compiler:

sudo tar -xvf gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf.tar.xz -C /opt

Export environment variables:

export PATH=/opt/gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf/bin:$PATH

Build u-boot from sources

Download the latest stable version from ISEE GIT Repository

git clone -b u-boot-2015.07.y git://git.isee.biz/pub/scm/u-boot-arm.git 
cd u-boot-arm/

Also, it could download from GIT Repositories (http://git.isee.biz/) and test the last unstable version at your own risk (see "U-Boot Mainline Series" chapter in The bootloader U-Boot)

Configure U-Boot for IGEP COM AQUILA RB11 (256MB RAM) device.

make CROSS_COMPILE=[your cross compiler] am335x_igep0033_defconfig

Configure U-Boot for IGEP COM AQUILA RB30 (512MB RAM) device.

make CROSS_COMPILE=[your cross compiler] am335x_igep0033_RB30_defconfig

Configure U-Boot for IGEP SMARC AM335x device.

make CROSS_COMPILE=[your cross compiler] am335x_igep0034_defconfig

Then build the SPL and the u-boot image. The result will be an MLO file and an u-boot.img file in current directory. Execute:

make CROSS_COMPILE=[your cross compiler]