I am using MPC8260 in master mode and the code is executed from flash at startup. The problem is that about 80% of the times the processor executes the code correctly and about 20% of the time it fails to execute the code. If the processor fails to boot from flash and PORESET or HRESET is asserted externally then it starts working again. A SRESET has no effect in this problem.
When the startup is failed then the MPC even does not toggles RAM_CS of FLASH CS. It is completely dead. The power supply sequence is correct. ANy suggestions in this problem will be of great help to me.
Waiting for your reply,