NixOS on ARM/OLIMEX Teres-A64
Teres-1 (often referred as teres-a64) is an open-source hardware and software netbook design based on the Allwinner A64 SoC.
| OLIMEX Teres-A64 | |
|---|---|
| |
| Manufacturer | OLIMEX, Ltd |
| Architecture | AArch64 |
| Bootloader | Upstream U-Boot[1] |
| Boot order | SD, eMMC |
| Maintainer | KREYREN |
It can boot from SD or from the included and slow af eMMC module (insane people use only).
Status
Work In Progress..
U-boot support has been submitted on 2023-06-30.
Installation instructions
To use the generic installation image for your board, you will need to copy it verbatim to an SD card.
sudo dd if=sd-image-aarch64-linux.img of=/dev/DEVICE conv=sync status=progress
This board requires the installation of u-boot at a specific location on the storage where NixOS was written to.
sudo dd if=u-boot-sunxi-with-spl.bin of=/dev/DEVICE bs=1024 seek=8
Partitioning
All Allwinner SoCs will try to find a boot image at sector 16 (8KB) of an SD card, connected to the first MMC controller.[3]
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MBR partition scheme
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This article or section needs expansion.
Reason: Installation instructions need to be written up to keep space for embedding the bootloader to the SPL. (Discuss in Talk:NixOS on ARM/OLIMEX Teres-A64#)
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GPT partition scheme
The Allwinner GPT Installation instruction explains how to create a GPT partition table while allowing the isntallation of u-boot at the required offset.
Serial console
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Compatibility notes
| Mainline kernel | |
|---|---|
| HDMI |
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Downstream kernel
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Reason: Find and document use of a kernel with the added capabilities. (Discuss in Talk:NixOS on ARM/OLIMEX Teres-A64#)
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USB booting with u-boot
You will need to either have mainline U-Boot installed to the eMMC or to an SD card.
Stop the boot process when prompted (by pressing a key). Then, do the following:
Hit any key to stop autoboot: 0 => setenv boot_targets usb0 => boot
This sets the boot order for this boot only. U-Boot can boot (among others) either of the NixOS sd-image or EFI iso from USB.