===== U-boot ===== ===== Toolchain ===== Click one of the site to download toolchain to build U-boot. Please note that this toolchain is for U-boot, there is another toolchain to build Linux kernel. * [[http://dn.odroid.com/toolchains/gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux.tar.bz2|Download Bootloader Tool chain(arm-linux-gnueabihf-4.7)]] Once the download is done, extract the tarball to **/opt/toolchains/**. If the '/opt/toolchains' directory does not exist in host pc, then create the directory. $ sudo mkdir -p /opt/toolchains $ sudo tar jxf gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux.tar.bz2 -C /opt/toolchains/ In order to add the toolchain path to PATH, paste below lines to **$HOME/.bashrc**. export PATH=/opt/toolchains/gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux/bin:$PATH export CROSS_COMPILE=arm-linux-gnueabihf- You can apply the change if you login again or import to apply this change, login again or evaluate **$HOME/.bashrc** with source command. $ source ~/.bashrc You can check if the toolchain installed above works properly while checking the version of toolchain. If you can find **gcc version 4.7.3** at the end of the line, the toolchain is well installed. $ arm-linux-gnueabihf-gcc -v COLLECT_LTO_WRAPPER=/opt/toolchain/gcc-linaro-arm-linux-gnueabihf-4.7-2013.04-20130415_linux/bin/../libexec/gcc/arm-linux-gnueabihf/4.7.3/lto-wrapper Target: arm-linux-gnueabihf Configured with: /cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/src/gcc-linaro-4.7-2013.04/configure --build=i686-build_pc- linux-gnu --host=i686-build_pc-linux-gnu --target=arm-linux-gnueabihf --prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install - -with-sysroot=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fortran -- enable-multilib --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=vfpv3-d16 --with-float=hard --with-pkgversion='crosstool-NG linaro-1.13.1-4.7-2013.04- 20130415 - Linaro GCC 2013.04' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --enable-__cxa_atexit --enable-libmudflap --enable-libgomp --enable- libssp --with-gmp=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with- mpfr=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpc=/cbuild/slaves/oorts/crosstool- ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-ppl=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf- linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux- gnueabihf/build/static --with-libelf=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with- host-libstdcxx='-L/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static/lib -lpwl' --enable- threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-gold --with-local-prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux- gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long --with-mode=thumb Thread model: posix gcc version 4.7.3 20130328 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC 2013.04)gcc version 4.4.3 (GCC) ===== Checkout & compile ===== You can checkout **U-boot** source tree from **[[https://github.com/hardkernel/u-boot/tree/odroidxu3-v2012.07|Hardkernel's Github]]**. $ git clone https://github.com/hardkernel/u-boot.git -b odroidxu3-v2012.07 Before you compile **U-boot**, you must configure for **ODROID-XU3** with following command. $ cd u-boot $ make odroid_config And finally you can compile **U-boot**. $ make Then you can start to build u-boot image, **u-boot.bin**. This will create **u-boot/u-boot.bin**. You can also add **-j** option for fast compile. ===== Installation ===== ODROID-XU3/4 must have the secure boot enabled boot loader. There are four components of boot loader bl1.bin.HardKernel, bl2.bin.HardKernel, u-boot.bin and tzsw.bin.HardKernel)\\ u-boot.bin file can be generated by u-boot source code. But bl1.bin.HardKernel, bl2.bin.HardKernel and tzsw.bin.HardKernel blobs can be found in u-boot/sd_fuse/hardkernel directory. * If you don't change the early hardware initialization (DRAM/KVM init), just update the u-boot.bin. The u-boot.bin doesn't need the signing process. * bl2.bin.HardKernel/bl1.bin.hardkernel/tzsw.bin.hardkernel can be supplied as a binary format due to Samsung's policy. * **You need to sign the bl2.bin with Hardkernel's private key to make it bootable.** * **If you want to contribute your patch, apply it to our u-boot github admin. Or, contact "odroid.uboot@gmail.com"** * **And we will publically release the signed bl2 image within 48 hours if there is any update.** * To flash the updated images on your MicroSD card, refer the scriptor file sd_fusing.sh in sd_fuse/hardkernel directory. * ** To update the boot loader area in the eMMC, must use the [[en:adb_fastboot_install|Fastboot Tool]]. ** * ** If the boot loader area is corrupted, use the [[emmc_recovery_xu3|eMMC Recovery]] process. ** * For eMMC update, you need a fastboot driver and micro-USB cable. ==== Installation to blank card ==== We provide the script, **sd_fuse/hardkernel/sd_fusing.sh**, this helps you to install the bootloader into your blank card MicroSD. - Insert your card to USB card reader and attach to USB host port of your desktop. - Check the device path of your USB card reader. - Install the bootloader binaries using **sd_fuse/hardkernel/sd_fusing.sh**. $ cd sd_fuse/hardkernel $ ./sd_fusing.sh ==== Installation using fastboot ==== If you can boot your **ODROID-XU3/4** already and want to install a new **u-boot.bin** built by you. Fastboot helps you to install a **u-boot.bin** into your board. u-boot.bin install $ sudo fastboot flash bootloader u-boot.bin bl1.bin install $ sudo fastboot flash fwbl1 sd_fuse/hardkernel/bl1.bin.hardKernel bl2.bin install $ sudo fastboot flash bl2 sd_fuse/hardkernel/bl2.bin.hardKernel tzsw.bin install $ sudo fastboot flash tzsw sd_fuse/hardkernel/tzsw.bin.hardKernel If installation is done, you care reboot your **ODROID-XU3** with fastboot. $ sudo fastboot reboot ==== Updating from Linux ==== You also can update U-boot from Linux with **dd** command. After building U-boot, copy **u-boot.bin** into your **ODROID-XU3/4**. Then do the command below in order to flash your U-boot image to MicroSD. $ sudo dd if=u-boot.bin of= seek=63 $ sudo sync