I am currently trying to upgrade my freescale MPC8610 linux kernel from 2.6.23 to 2.6.31 in order to be able to use the performance counters.
However, I am facing some difficulties.
Here is what I did :
- I built my new kernel using the mpc8610_hpcd default configuration and performance counters enabled.
- Then i have generated the dtb file corresponding to my board.
- Finally i use u-boot (version 1.3) to load the dtb and the uImage and boot the kernel.
When I boot, u-boot stops after loading the dtb file.
I suspect that my u-boot version is too old, but I'm not sure if I can safely upgrade it ?
I googled a lot about the subject but didn't find anything helpful.
Did anyone do that kind of upgrade (kernel and/or u-boot) ?