Hello,
We've purchased a Sabre Lite board to help us with development of our own somewhat equivalent board for a customer. The software that was preinstalled on the board works correctly, u-boot, kernel, etc. The software that I've built following instructions from element14, however, doesn't: u-boot works, finds kernel, says CRC ok, says it's loading it... and then nothing. That would indicate that at least, CPU works, RAM works, USB OTG and microSD programming work, so the board is generally in good condition.
How can I check what's wrong with my kernel?
I've tried:
- enabling debug information in kernel and then connecting with gdb over both serial ports: doesn't work, and I'm not sure whether it's because I did something wrong or the problem occurs too early for gdb debugging to work
- changing serial console to ttymxc0 and 2 instead of default 1
Unfortunately I don't have hardware/software that would allow me to use a dedicated debugger (unless I could use something simple as serial uart, usb or similar?).