Running Linux on a PDA

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Running Linux on a PDA Manitoba Unix Users' Group Tuesday April 13, 2004 Presented by Brian Doob Types of PDAs ● Palm: Traditionally inexpensive, long battery life, simple interface. ● PocketPC / WinCE: Traditionally expensive, powerful CPU, desktop-like interface. ● Linux: Traditionally non-existent (or at least obscure). Linux PDAs ● Sharp Zaurus: Fast CPU (200MHz – 400MHz ARM), Qtopia interface. ● Softfield VR3: 66MHz Mips processor, Palm- like interface. ● Others are also available. PDA Linux Distributions ● Familiar Linux: small system that runs on a 32MB PDA (without a flash card or HD). ● Intimate Linux: more complete Linux system that requires a flash card (140MB for the base image). ● Ports of other Distributions: Debian, Gentoo, not as mature. PDA Linux GUIs ● Qtopia: written by TrollTech, small version of Qt with PIM applications (open source with limitations). ● Open Palmtop Integrated Environment (OPIE): open source fork of Qtopia (binary compatible with Qtopia and Zaurus). ● GPE Palmtop Environment (GPE): Gtk+-2.2 on X. ● X: X windows, usually with BlackBox. Installing “bootldr” ● Transfer bootldr (a boot loader) and “BootBlaster” to the PDA (running PocketPC). ● BootBlaster writes bootldr onto the boot sector (in internal flash memory). ● bootldr can boot Linux or WinCE from internal flash memory or from a flash card. Installing Familiar Linux ● The memory image can be loaded over a serial (but not USB) line, or from a 32MB flash card. ● bootldr can accept a serial connection or read a flash card and write the system image to internal memory. USB Networking ● Uses TCP/IP over USB with a point-to-point connection. ● The Linux desktop uses the USB Network kernel module (usbnet.o). ● The desktop can provide a connection to the internet with IP Forwarding (NAT is not necessary). Demo.

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