buildroot

A20-OLinuXino-LIME and A20-OLinuXino-MICRO

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Intro

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These are open hardware boards, all based on the Allwinner A20 SoC.

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for more details about the boards see the following pages:

 - https://www.olimex.com/Products/OLinuXino/open-source-hardware

 - https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-MICRO/

 - https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-LIME/

 - https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-LIME2/

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The following defconfigs are available:

 - olimex_a20_olinuxino_micro_defconfig

   for the A20-OLinuXino-MICRO board using mainline kernel

 - olimex_a20_olinuxino_lime_defconfig

   for the A20-OLinuXino-LIME board using mainline kernel

 - olimex_a20_olinuxino_lime_mali_defconfig

   for the A20-OLinuXino-LIME board using legacy linux-sunxi kernel

 - olimex_a20_olinuxino_lime2_defconfig

   for the A20-OLinuXino-LIME2 board using mainline kernel

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The legacy linux-sunxi kernels are based on the vendor code drops.

They are only useful when accelerated 3D graphics and multimedia support

is strictly necessary.

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The Mainline Kernel is already a much better choice for a headless server.

And also the mainline kernel works fine even for a basic Linux desktop

system running on top of a simple framebuffer, which may be good enough for

the users who do not need fancy 3D graphics or video playback acceleration.

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(see http://linux-sunxi.org/Linux_Kernel for more details)

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How to build it

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Configure Buildroot:

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    $ make <board>_defconfig

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Compile everything and build the rootfs image:

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    $ make

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Result of the build

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After building, you should get a tree like this:

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    output/images/

    +-- rootfs.ext2

    +-- rootfs.ext4 -> rootfs.ext2

    +-- script.bin (lime_mali)

    +-- sdcard.img

    +-- sun7i-a20-olinuxino-lime.dtb (lime, mainline)

    +-- sun7i-a20-olinuxino-lime2.dtb (lime2, mainline)

    +-- sun7i-a20-olinuxino-micro.dtb (micro, mainline)

    +-- u-boot.bin

    +-- u-boot-sunxi-with-spl.bin

    `-- zImage

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