Embedding Linux On The Encore Simputer
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The document discusses porting the Linux kernel to run on the Encore Simputer, an ARM-based handheld device. It describes building the kernel from source, adding support for the Simputer's hardware including memory, display and peripherals. Finally, it mentions porting the 2.6 test kernel to the Simputer and thanks the audience.
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Embedding Linux On The Encore Simputer
- 1. Embedding Linux on the Encore Simputer Samyeer Metrani Encore Software Limited
- 2. Agenda The Encore Simputer Building an ARM Linux Kernel Porting to the Encore Simputer Porting the 2.6-test9 kernel
- 4. The Encore Simputer 206Mhz StrongARM Processor 32-64 MB DRAM – 16-32MB Flash LCD Panel Color/Mono Display TouchPanel Input Internal Mic & Speaker USB Slave and Serial Port PC Connectivity Smartcard Interface V.90 Internal Modem USB Master Compact Flash (CF II)
- 5. What is on the Simputer? Stock Linux ARM Kernel glibc 2.2.4 XWindows 4.2 and Related X Libraries GTK 1.2 Libraries Networking Tools PPP, ftp, telnet, … Utilities and Feature Demo’s
- 6. Tools Needed The ARM Toolchain Using the skiff toolchain Other pre-built toolchains ftp://ftp.arm.linux.org.uk/pub/armlinux/toolchain/ Building a toolchain.
- 7. Building an ARM-Linux Kernel Selecting a Platform The Assabet Platform The Linux Kernel www.kernel.org Russel King’s Patches www.arm.linux.org.uk Building the first kernel Cross Compilation Support Makefile Modifications.
- 8. Running the Kernel The Bootloader BLOB – www.lart.tudelft.nl bootldr - http://www.handhelds.org/projects/cvsproj.html?project= bootldr What does the bootloader do Processor and Memory initialisation Setup a serial console Load kernel (and ramdisk) Bootloader support for the kernel.
- 9. Adding a new architecture Registering a Machine Type www.arm.linux.org.uk/developer/machines/ arch/arm/tools/mach-types Modifying the configuration menu Creating a default configuration Booting the First Kernel Turning on Kernel Debug.
- 10. Getting the Kernel Booting Bootloader specific initialisation Kernel Notes http://www.arm.linux.org.uk/developer/kernelnotes.shtml Modifying Configure.help Building a kernel patch.
- 11. Machine Specific Initialisations Architecture specific initialisation esl_simputer.c, esl_simputer.h Makefile Modifications Board specific Initialisations DRAM Support Flash MAPS Bringing up the display Building a new patch.
- 12. What next… Hardware Interfaces Peripheral Support Touchpanel Audio Support Keypad Support RTC Support USB, Compact Flash Kernel 2.6…
- 13. Porting the 2.6-test9 kernel Why 2.6 kernel? Toolchain Differences 2.95.3, 3,3,1 … Bootloader Support Configuration Files.
- 14. Thank You Samyeer Metrani