A20 OLinuXino Lime2

Installation

Everything except U-boot is already present in the Generic ARM tarball on the download page.

Compile U-boot

Download the latest stable tag from the u-boot repository

 git clone --depth 1 --branch v2023.04 git://git.denx.de/u-boot.git

then configure and compile u-boot

 make CROSS_COMPILE=arm-linux-gnueabihf- A20-OLinuXino-Lime2_defconfig
 make CROSS_COMPILE=arm-linux-gnueabihf-

This should output a combined SPL file with u-boot called u-boot-sunxi-with-spl.bin

(OR) Using U-boot from NetBSD

NetBSD u-boot may also be used to complete the steps below. After extracting latest tarball, /share/u-boot/ directory contains u-boot-sunxi-with-spl.bin.

Prepare an SD Card

Firstly, erase the first part of your SD Card including the partition table).

 dd if=/dev/zero of=${card} bs=1M count=1

Secondly, create a DOS partition table and add a primary partition to your card.

 fdisk /dev/sdX

Start the partition at sector 2048, change its type to W95 FAT32, and set its bootable flag.

Finally, create a FAT filesystem on the new partition.

 mkfs.fat /dev/sdX1

Copy Data to the SD Card

Copy SPL with u-boot to the SD Card offset by 8KB (specific to Sunxi).

 dd if=u-boot-sunxi-with-spl.bin of=/dev/sdX bs=1024 seek=8

Mount the partition and extract files from the Generic ARM tarball onto it.

 ├── alpine.apkovl.tar.gz
 ├── apks
 │   └── armv7
 │       ├── alpine-base-3.17.2-r0.apk
 │       ├── ...
 │       └── zlib-1.2.13-r0.apk
 ├── boot
 │   ├── dtbs-lts
 │   │   └── sun7i-a20-olinuxino-lime2.dtb
 │   ├── initramfs-lts
 │   ├── modloop-lts
 │   ├── System.map-lts
 │   └── vmlinuz-lts
 └── extlinux
     └── extlinux.conf

After Installation

The default login is root, HDMI should work out-of-the-box, ethernet is off by default. Use setup-alpine to complete the remaining configuration. The Installation page should guide you from here.