I am using MPC8323E-RDB board for application development in Linux environment. On Ubuntu 8.10 PC I generated kernel image by suing LTIB with kernel version of 2.6.20. Now I want to blink LEDs (Present on the board and named D3,D4 & D5) which are connected to PORT-D 16,17 & 18 pins. I tried to access pins by providing address of Port registers, but I am getting segmentation fault.
How can I access I/O Port registers? and What might be the base address if required?
I have seen IMMR address range 0xE0000000 - 0xEFFFFFFF . Is it the base address to access GPIO port pins?
Please respond as soon as possible.