187 lines
4.9 KiB
Markdown
187 lines
4.9 KiB
Markdown
## U-Boot 2018
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Based on mainline U-Boot.
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### Dependencies
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- bison (YACC-compatible parser generator)
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- flex (fast lexical analyzer generator)
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- bc (GNU bc arbitrary precision calculator language)
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- openssl/bn.h header (Secure Sockets Layer toolkit - development files)
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- make (GNU Make)
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- gcc (GNU C Compiler)
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Under Debian / Ubuntu, the dependencies can be installed using
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```bash
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sudo apt-get -y install bison flex bc libssl-dev make gcc
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```
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### Cross compiler
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Even though mainline U-Boot requires GCC minimum version 6, it would generate oversized SPL (Secondary Program Loader) image. Therefore it is recommended to use GCC version 7.
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#### Ubuntu 18.04 LTS
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Install the toolchain.
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```bash
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sudo apt -y install gcc-arm-linux-gnueabihf binutils-arm-linux-gnueabihf
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```
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Setup environment for cross compiling.
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```bash
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export ARCH=arm
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export CROSS_COMPILE=arm-linux-gnueabihf-
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```
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#### Other OS/ Distribution
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Other OS / Distribution that does not have GCC version 7 such as Debian, should use Linaro arm-linux-gnueabihf toolchain.
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Download and extract the toolchain.
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```bash
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cd ~
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wget http://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/arm-linux-gnueabihf/gcc-linaro-7.3.1-2018.05-x86_64_arm-linux-gnueabihf.tar.xz
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tar Jxf gcc-linaro-7.3.1-2018.05-x86_64_arm-linux-gnueabihf.tar.xz
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```
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!!! note
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Latest Linaro toolchain version 7 can be found [here](http://releases.linaro.org/components/toolchain/binaries/latest-7/arm-linux-gnueabihf/).
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Setup environment for cross compiling.
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```bash
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export ARCH=arm
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export CROSS_COMPILE=~/gcc-linaro-7.3.1-2018.05-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
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```
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### Compile U-Boot
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```bash
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git clone https://github.com/helios-4/u-boot.git -b helios4
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cd u-boot
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make mrproper
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make helios4_defconfig
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```
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!!! note
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To support Armbian boot script (/boot/boot.scr), please apply [this patch](/files/uboot/u-boot-mainline-armbian-boot-script-support.patch) to U-Boot source code before
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*make helios4_defconfig*
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#### SD Card image
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```bash
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make -j$(nproc)
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```
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it would produced **u-boot-spl.kwb**
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#### SPI NOR flash image
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Since *helios4_defconfig* targeting SD card image, we need to modified the configuration to generate SPI NOR flash image before compiling.
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```bash
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mv -f .config .config_mmc
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awk '{\
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gsub(/CONFIG_MVEBU_SPL_BOOT_DEVICE_MMC=y/,"# CONFIG_MVEBU_SPL_BOOT_DEVICE_MMC is not set");\
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gsub(/# CONFIG_MVEBU_SPL_BOOT_DEVICE_SPI is not set/,"CONFIG_MVEBU_SPL_BOOT_DEVICE_SPI=y");\
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gsub(/CONFIG_ENV_IS_IN_MMC=y/,"# CONFIG_ENV_IS_IN_MMC is not set");\
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gsub(/# CONFIG_ENV_IS_IN_SPI_FLASH is not set/,"CONFIG_ENV_IS_IN_SPI_FLASH=y");\
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}1' .config_mmc >> .config
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rm -f .config_mmc
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make -j$(nproc)
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```
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it would produced **u-boot-spl.kwb**
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### Customize U-Boot
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U-Boot has configuration editor based on ncurses similar like Linux Kernel configuration editor.
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Install ncurses development files. Under Debian/Ubuntu can be done using this command
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```bash
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sudo apt-get -y install libncurses5-dev
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```
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Launch configuration editor
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```bash
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make menuconfig
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```
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After exiting the configuration editor and saving the configuration, build the image according to [SD Card image](#sd-card-image) or [SPI NOR flash image](#spi-nor-flash-image) instructions.
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- - -
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## Marvell U-Boot 2013.01
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Based on U-Boot 2013.01 Marvell version: 2015_T1.0p16
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### Cross compiler
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Under Debian / Ubuntu you need first to install the necessary packages and tools for cross compiling for ARM.
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```bash
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sudo apt-get install gcc make gcc-arm-linux-gnueabi binutils-arm-linux-gnueabi
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```
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Other option, use Linaro cross compiler 4.9.4 arm-gnueabi toolchain. Download [here](https://releases.linaro.org/components/toolchain/binaries/4.9-2017.01/arm-linux-gnueabi/).
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!!! Note
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DO NOT use hard-float variant (arm-linux-gnueabihf).
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### Compile U-Boot
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```bash
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git clone https://github.com/helios-4/u-boot-marvell.git
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cd u-boot-marvell
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export ARCH=arm
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export CROSS_COMPILE="/path/to/cross/compiler"
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export CROSS_COMPILE_BH=${CROSS_COMPILE}
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make mrproper
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```
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!!! note
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To compile using Ubuntu 16.04 cross compiler, please apply [this patch](https://github.com/armbian/build/blob/master/patch/u-boot/u-boot-mvebu/tools-bin_hdr-compiler-fixes.patch) to U-Boot source code.
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!!! note
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To support Armbian boot script (/boot/boot.scr), please apply [this patch](/files/uboot/u-boot-armbian-boot-script-support.patch) to U-Boot source code.
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#### SD Card image
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```
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./build.pl -f mmc -b armada_38x_helios4
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```
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it would produced *u-boot-a38x-**mm**-**d**-mmc.bin* whereas **mm** is month and **d** is day. For example, building u-boot on October 2nd would produced
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*u-boot-a38x-10-2-mmc.bin*
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#### SPI NOR flash image
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```
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./build.pl -f spi -b armada_38x_helios4
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```
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it would produced *u-boot-a38x-**mm**-**d**-spi.bin* whereas **mm** is month and **d** is day. For example, building u-boot on October 2nd would produced
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*u-boot-a38x-10-2-spi.bin*
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