51 lines
1.5 KiB
Markdown
51 lines
1.5 KiB
Markdown
## 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.src), 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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