This is the base Nerves System configuration for a kiosk x86_64 system.
| Feature | Description |
|---|---|
| CPU | Intel |
| Memory | 512 MB+ DRAM |
| Storage | Hard disk/SSD/etc. (/dev/sda) |
| Linux kernel | 4.19.43 |
| IEx terminal | tty1 |
| Hardware I/O | None |
| Ethernet | Yes |
The most common way of using this Nerves System is create a project with mix nerves.new and to export MIX_TARGET=x86_64.
Then, change the x86_64 system dependency to
{:kiosk_system_x86_64, "~> 1.0"}
See the Getting started guide for more information.
If you need custom modifications to this system for your device, clone this repository and update as described in Making custom systems
See the example project for more info
If you have multiple SSDs, or other devices connected, it's
possible that Linux will enumerate those devices in a nondeterministic order.
This can be mitigated by using udev to populate the /dev/disks/by-*
directories, but even this can be inconvenient when you just want to refer to
the drive that provides the root filesystem. To address this, erlinit creates
/dev/rootdisk0, /dev/rootdisk0p1, etc. and symlinks them to the expected
devices. For example, if your root file system is on /dev/mmcblk0p1, you'll
get a symlink from /dev/rootdisk0p1 to /dev/mmcblk0p1 and the whole disk
will be /dev/rootdisk0. Similarly, if the root filesystem is on /dev/sdb1,
you'd still get /dev/rootdisk0p1 and /dev/rootdisk0 and they'd by symlinked
to /dev/sdb1 and /dev/sdb respectively.