Group: Hardware/Computers/Single Board Computers/Plug Computers
From LibrePlanet
(→Hardware features comparison) |
|||
| Line 21: | Line 21: | ||
** The bootloader is free software and can easily be replaced | ** The bootloader is free software and can easily be replaced | ||
** The kernel and all the drivers needed are free software | ** The kernel and all the drivers needed are free software | ||
| − | ** WiFi and bluetooth both need a non-free loaded firmware, but the USB ports make it possible to use external WiFi and/or bluetooth dongle that can work with free software | + | ** WiFi and bluetooth both need a non-free loaded firmware, but the USB ports make it possible to use external WiFi and/or bluetooth dongle that can work with free software (both USB2 ports can provide up to 500mA) |
== Hardware features comparison == | == Hardware features comparison == | ||
| Line 45: | Line 45: | ||
| 512 Mb | | 512 Mb | ||
| 512 Mb | | 512 Mb | ||
| − | | SD card | + | | SD card |
| 1xUSB2 | | 1xUSB2 | ||
| N/A | | N/A | ||
| Line 58: | Line 58: | ||
| 512 Mb | | 512 Mb | ||
| 4 Gb (µSD card) | | 4 Gb (µSD card) | ||
| − | | e-SATA | + | | e-SATA, SD card |
| 2xUSB2 | | 2xUSB2 | ||
| N/A | | N/A | ||
| 2x10/100/1000 | | 2x10/100/1000 | ||
| − | | 802.11 b/g/n | + | | 802.11 b/g/n, AP |
| 3.0 | | 3.0 | ||
|} | |} | ||
Revision as of 07:54, 6 August 2013
Plug Computers are computers that fit in a small form-factor and are power-efficient. Most of the time, Plug Computers use a System-on-a-Chip (SoC) with an ARM processor, run a GNU/Linux system and are used as domestic servers.
Contents
Software freedom comparison
While some Plug Computers can be used with fully free software running on the main processor, not all of them are perfect. Hence, here is a comparison of different models of Plug Computers and their flaws regarding software freedom.
Flawless targets
These plug computers can be operated with all the hardware features available, using only free software.
- The Globalscale SheevaPlug can be operated using only free software:
- The bootloader is free software and can easily be replaced
- The kernel and all the drivers needed are free software
- There is no hardware component that requires a non-free loaded firmware
Seriously flawed targets
These plug computers are usable with free software, but important hardware features are not functional. There may be workarounds for these however.
- The Globalscale DreamPlug is flawed as the WiFi and bluetooth hardware require non-free firmwares
- The bootloader is free software and can easily be replaced
- The kernel and all the drivers needed are free software
- WiFi and bluetooth both need a non-free loaded firmware, but the USB ports make it possible to use external WiFi and/or bluetooth dongle that can work with free software (both USB2 ports can provide up to 500mA)
Hardware features comparison
| Name | Manufacturer | SoC | CPU frequency | RAM | Internal storage | External storage | USB | PCI | Ethernet | WiFi | Bluetooth |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SheevaPlug | Globalscale | Kirkwood 88F6281 | 1.2 Ghz | 512 Mb | 512 Mb | SD card | 1xUSB2 | N/A | 1x10/100/1000 | N/A | N/A |
| DreamPlug | Globalscale | Kirkwood 88F6281 | 1.2 Ghz | 512 Mb | 4 Gb (µSD card) | e-SATA, SD card | 2xUSB2 | N/A | 2x10/100/1000 | 802.11 b/g/n, AP | 3.0 |
Software features comparison
| Name | Manufacturer | Architecture | Bootloader | Kernel | GNU/Linux |
|---|---|---|---|---|---|
| SheevaPlug | Globalscale | ARMv5/armel | Upstream U-Boot | Upstream Linux | Upstream Debian |
| Dreamplug | Globalscale | ARMv5/armel | Upstream U-Boot | Upstream Linux | Upstream Debian |
