Re: [U-Boot] [PATCH 15/21] nios2: Generic system restart support

Hi Kyle,

Kyle Moffett wrote:

The Nios-II port appears to use no generic hardware capability for performing a CPU reset. Since all of the supported boards use the exact same code to perform a jump-to-flash it goes into __arch_restart().

This means that Nios-II has a no-op __arch_emergency_restart() function. If the CPU is in an invalid state then jump-to-FLASH probably won't work.

If the CPU state is stable enough to call __arch_emergency_restart(), a jump to the reset address should be fine. In many implementations the reset code is in on-chip ROM. If things get screwed up enough to affect the code in on-chip ROM, it probably won't matter what gets called. ;-)

Thomas, any thoughts?

Regards, --Scott