Hi,

For an internship I have to port linux to custom made board. I assume I’ll have to set the memory-map right and make the hardware initialize, set IRQ, …. Browsing trough the kernel source I found that all that happens within /arch/ppc/platforms and there are separate files for each board. But how do I start to write my own code. Can someone give me some pointers or is there any documentation on this subject? This is what my board is made of:

• 64 Mb SDRAM (a PLD copy’s the kernel to this location (0x00000000))
• 1 MB boot ram (a PLD copy’s the boot loader from flash to this location at the end of the memory map)
• MMC card reader
• Flash 8MB (don’t have to use it though-> the PLD’s use them to copy boot loader and kernel there)
• Leds that I can use through a PLD-register

The processor is a 405Gr processor, 1 UART is connected to a V24 iface.

The boot loader is a striped version of ppcboot, and is now used to load a self written RTOS. So I guess I can use that version.

Is there besides this something else I ‘ll have to adjust?

Thanks,

Joachim Denil

Student @ Karel De Grote hogeschool Antwerpen (Belgium)