Nokia N900 (nokia-n900)
![]() Nokia N900 running cmus | |
Manufacturer | Nokia |
---|---|
Name | N900 |
Codename | rx51 |
Released | 2009 |
Hardware | |
CPU | TI OMAP 3430 |
GPU | PowerVR SGX530 |
Display | 800x480 IPS |
Storage | 32GB |
Memory | 256MB |
Software | |
Original software | Maemo on Linux 2.6 |
postmarketOS | |
Category | testing |
Pre-built images | no |
Mainline | no |
Flashing |
No data |
---|---|
USB Networking |
No data |
Internal storage |
No data |
SD card |
No data |
Battery |
No data |
Screen |
No data |
Touchscreen |
No data |
Multimedia | |
3D Acceleration |
No data |
Audio |
No data |
Camera |
No data |
Camera Flash |
No data |
Connectivity | |
WiFi |
No data |
Bluetooth |
No data |
GPS |
No data |
NFC |
No data |
Modem | |
Calls |
No data |
SMS |
No data |
Mobile data |
No data |
Miscellaneous | |
FDE |
No data |
USB OTG |
No data |
HDMI/DP |
No data |
Sensors | |
Accelerometer |
No data |
Magnetometer |
No data |
Ambient Light |
No data |
Proximity |
No data |
Hall Effect |
No data |
Haptics |
No data |
Barometer |
No data |
Contributors
What works
- Framebuffer & DRM graphics
- GPRS / SMS (see section below)
- Unlocking the root partition using the physical keyboard
- Display Backlight control
- Wayland on framebuffer
- Wifi (see Additional Info below)
- Notification led
- Audio playback (ALSA)
- Keyboard backlight (see Additional Info below)
- Battery capacity reporting (see Additional Info below)
- Keyboard in virtual terminal
What does not work
- Both cameras
- Cell modem (untested)
- 3D Acceleration (requires binary blob)
- Bluetooth
Installation
We currently only support installing and running pmos from the microsd card on the n900.
Getting it to work with emmc and 0xffff is harder to implement and has no real benefit since
the built in emmc is quite slow and fragile.
- Init pmbootstrap
$ ./pmbootstrap.py init
- Start the build process and install the completed image to a sdcard
# Replace /dev/sdX with the device for your sdcard
$ ./pmbootstrap.py install --sdcard /dev/sdX
- Install u-boot from pali on the n900 if you haven't installed it already. See Additional Info below for instructions on configuring pmos to boot by default.
- Place the sdcard into the n900 and boot it with the keyboard slide open
- Choose the u-boot shell
- enter
run sdboot
into the shell
Links
Additional info
- Martijn's N900 has uboot installed a long time ago, I'm using sdcard boot from the bootmenu shell using
run sdboot
- The Neo900 (still in development) will upgrade the hardware inside of the N900, and has some nice features such as hardware sandboxing the modem.
Wifi
The linux-firmware
package is required to provide the wl1251 firmware necessary for initializing the wifi device. (#158)
Once the device has been successfully initialized, enable it:
$ sudo ip link set wlan0 up $ sudo iw wlan0 set type managed
Configure wpa_supplicant (only necessary on encrypted networks):
$ sudo su - # wpa_passphrase $YOUR_SSID > /etc/wpa_supplicant/wlan0.conf <enter passphrase here and press Enter> # exit
Connect to network using wpa_supplicant:
$ sudo wpa_supplicant -Dwext -i wlan0 -c /etc/wpa_supplicant/wlan0.conf
If your network uses DHCP, start the DHCP client:
$ sudo udhcpc -i wlan0
Keyboard Backlight
There are 6 keyboard backlight LEDs that can be adjusted, they are found under /sys/class/leds/lp5523:kb{1-6}
. To adjust brightness, write a value, $VAL between 0 and 255, to the brightness
parameter as the root user:
for i in $(seq 1 6); do echo $VAL > /sys/class/leds/lp5523\:kb$i/brightness done
Display
With DRM enabled (#197), the display can be managed at this location: /sys/devices/platform/omapdrm.0/graphics/fb0/
For example, the display can be turned off by:
# echo 1 > /sys/devices/platform/omapdrm.0/graphics/fb0/blank
Keyboard layout in console
In order to set the keyboard layout for the virtual console (e.g. to take advantage of number keys on the N900 keyboard), obtain your desired language keymap file for the RX-51, such as this one.. (TODO: Need to pull 'official' vconsole keymaps from Maemo5 if they exist..).
On the N900, install kbd-bkeymaps
, either by using pmbootstrap install --add kbd-bkeysmaps
on the host system or by running apk add kbd-bkeysmaps
on the device itself.
The keymap must be in binary format, bmap. This can be accomplished using the loadkeys
tool:
$ apk add kbd kbd-bkeymaps
$ loadkeys -b rx51_us.map > rx51_us.bmap
$ gzip rx51_us.bmap
Compress it and copy it to /usr/share/bkeymaps/us/
on the N900.
Log into the N900, and run sudo setup-keymap
, then select us
and finally rx51_us
.
Battery Capacity Reporting
The current battery capacity can be found under /sys/class/power_supply/bq27200-0/capacity
, and is represented as a percentage. For example, a value of 11
equates to 11%
. If capacity
does not exist or contains erroneous information, then your battery needs to be calibrated first. To calibrate the battery:
1) Charge it up fully, using a wall power adapter.
2) Once it is charged up, power on the device
3) Unplug the device and allow the battery to run all the way down until it powers off. This may take quite a while to happen (>24hrs, but can be made shorter by running a CPU intensive workload)
4) When device powers off, plug it back into wall adapter and allow to charge up fully again. The battery and charging chip should now be calibrated.
Datasheet for the bq27200 charging chip
Setting the hardware clock
Since 49fd9e0e4efcf030ca47344858bdc74370a78603 the hardware clock works. If your hardware clock doesn't have the time set you can set it with:
# Get the system date in the right ballpark so ntpd works
$ date -s "2017-08-14 16:34:50"
# Write the current system time to the hardware clock
$ hwclock -w
Configuring U-boot
In order to configure pmos to boot by default on the N900, using U-boot, you will need to boot into Maemo and create a /etc/bootmenu.d/10-pmos.item
file as the root user with these contents:
ITEM_NAME="Postmarket OS" ITEM_SCRIPT="boot.scr" ITEM_DEVICE="${EXT_CARD}p1" ITEM_FSTYPE="ext2"
It can be set to the default boot option by creating a symlink:
root@Nokia-N900:~# ln -s /etc/bootmenu.d/10-pmos.item /etc/default/bootmenu.item
Finally, run u-boot-update-bootmenu
:
root@Nokia-N900:~# u-boot-update-bootmenu Default bootmenu entry is '/etc/bootmenu.d/10-pmos.item' Adding bootmenu entry for: 'Maemo 5 with attached kernel (Internal Nand)' Configuration file: /etc/bootmenu.d/10-pmos.item Adding bootmenu entry for: 'Postmarket OS' Configuring this bootmenu entry as default Generating u-boot bootmenu script...
Note: This will set pmos as the default boot option. Maemo will still be accessible when booting the N900 with the keyboard slide out and selecting the relevant boot option in the u-boot boot menu.
GPRS / SMS
In order to use the ofono test scripts, you must install py-dbus, that is currently available only for python2.
The N900 needs internet access to perform these steps. See the section above on setting up Wifi. |
Your date/time need to be correct in order for HTTPS to work. You can use ntpd to do this. |
# apk add git py-dbus # git clone --depth 1 https://git.kernel.org/pub/scm/network/ofono/ofono.git
Here's an example using the test scripts to enable the modem and send a SMS:
# cd ofono/test # python2 enable-modem # python2 online-modem # python2 send-sms 5033784582 "I like pizza." 0
Here's an example using the test scripts to enable GPRS:
# cd ofono/test # python2 enable-modem Connecting modem /n900_0... # python2 online-modem Setting modem /n900_0 online... ### Replace "fast.t-mobile.com" with your carrier's APN # python2 create-internet-context fast.t-mobile.com Found context /n900_0/context1 Setting APN to fast.t-mobile.com # python2 set-tech-preference gsm Setting technology preference for modem /n900_0... # python2 enable-gprs Connecting modem /n900_0... # python2 activate-context # python2 process-context-setting # python2 process-context-settings Configuring /n900_0/context1 Interface is gprs0 IP address is 25.191.83.103 Gateway is 0.0.0.0 Nameserver is 10.177.0.34 Nameserver is 10.177.0.210 #### Set DNS server based on Nameserver from previous command # echo 10.177.0.34 > /etc/resolv.conf