Mer/Documentation/ARM CPU
(Add some notes on arm) |
|||
| Line 27: | Line 27: | ||
**USB | **USB | ||
**TV-OUT | **TV-OUT | ||
| + | |||
| + | |||
| + | == Arm variations == | ||
| + | The ARM processor has [http://en.wikipedia.org/wiki/ARM_architecture several variations]. | ||
| + | |||
| + | When Ubuntu supported ARM they built armv5el | ||
| + | |||
| + | When Debian supported ARM they built armv4t ( eabi armv4 + thumb) | ||
| + | |||
| + | (cf building for i386 or i486 ... i486 code won't run on old 386 CPUs) | ||
| + | |||
| + | The armv5el code makes better use of newer hardware and runs faster on it so the main Mer support is for Ubuntu. | ||
| + | We have a Debian port to support the slightly older devices (and to keep options open) | ||
| + | |||
| + | The Nokia internet tablets are armv6 | ||
| + | The Freerunner is armv4 | ||
| + | |||
| + | Future Ubuntu releases (Karmic) will be v6+ and maybe, eventually higher. | ||
Revision as of 11:50, 1 June 2009
N8x0
- Display
- Display brightness
- Ambient light sensor
- Touch events
- Buttons/Switches
- Headphone detect
- Headset switch events (via dbus)
- Keyboard
- Battery cover/SD door events
- HW Buttons (zoom,lock etc)
- Power Button
- Camera eject
- Devices
- Camera
- Sound Microphone
- Sound Speakers/Mic
- Bluetooth
- Wifi
- GPS
- Battery
- Power control
- MMC reader
- USB
- TV-OUT
Arm variations
The ARM processor has several variations.
When Ubuntu supported ARM they built armv5el
When Debian supported ARM they built armv4t ( eabi armv4 + thumb)
(cf building for i386 or i486 ... i486 code won't run on old 386 CPUs)
The armv5el code makes better use of newer hardware and runs faster on it so the main Mer support is for Ubuntu. We have a Debian port to support the slightly older devices (and to keep options open)
The Nokia internet tablets are armv6 The Freerunner is armv4
Future Ubuntu releases (Karmic) will be v6+ and maybe, eventually higher.