This page contains the different boot options and parameters you will need to configure your device. Typically, these are part of your default.txt. For more information, see the Installing Android page.

This determines the device type for which the kernel will be configured

• 1463 - Titan
• 1553 - Kaiser
• 1723 - Polaris
• 1805 - Diamond
• 1910 - Raphael
• 2030 - blackstone
• 2293 - Topaz

This points to the kernel image that is being booted. It should match the name of the file in the directory.

The maximum frequency (in Hz) used by the SD controller

The mode used when the phone is in standby

• 0 - Power Collapse Suspend
• 1 - Power Collapse - Provides best power savings
• 2 - Apps Sleep
• 3 - Slow Clock and Wait for Interrupt (default)
• 4 - Wait for Interrupt

Panel type used to power the panel off and on (see also vertical line issue)

• 0 - Don't power off the panel
• 1 - Sony
• 2 - Topoly
• 3 - Topoly

Panel type used to power the panel off and on

• 0 - Don't power off the panel
• 1 - Hitachi
• 2 - Topoly
• 3 - Samsung

Defaults to 160, lcd.density=128 shows more on screen

• Use lcd.density=120 with mddi.height=320 & mddi.width=240

Determine keypad type for Fn keys (differs between standard TyTN II and AT&T Tilt models)

• 0 - TyTN II (Fn + Q = @)
• 1 - AT&T Tilt (Fn + Q = !)

Set the resolution of Android (will then be stretched/shrunk to fit the native resolution of the device LCD, which carries a performance hit)

• mddi.width = 240, mddi.height = 320 - native resolution of Kaiser, Vogue, Polaris. Image is clear, but many programs won't fit properly on screen. Also for now screen orientation is broken in this resolution.
  • Should work with Android 1.6 Donut
• mddi.width = 320, mddi.height = 480 - native resolution of T-Mobile G1. Aspect ratio of image doesn't match aspect ratio of the screen, image distorted. Also image is blurred as in all non-native resolutions.
• mddi.width = 312, mddi.height = 416 - typical compromise between the two resolutions. Negotiates issues of aspect ratio and application formatting compatibility. Some programs still don't fit the screen though.

Both mddi.width and mddi.height must be multiples of 2. To keep native aspect ratio of 3:4 mddi.width and mddi.height must be multiples of 6 and 8 respectively.

As long as Internet settings are set correctly in “Settings/Wireless controls/Mobile networks/APNs” Togga will connect and Internet access will work. However, following kernel parameters also need to be provided in order to get automatic connect/reconnect without using Togga.

To find settings for your carrier, visit the carrier network settings page.

The APN used to connect to the network (when dialing #777)

The username used to connect to the network (when dialing #777)

The password used to connect to the network (when dialing #777)

If ppp.nostart=1, the connection will not automatically connect, and Modem must be used to connect to the Internet.