The UEFI spec calls out that the Boot Services will start a 5 minute reset watchdog timer. On the Dell M620 I am using this causes the ^B breakout to iPXE shell to only be available for about 5 minutes. I have not studied the iPXE tree enough to know the proper placement of this code in the "shell", but if this call could be added to the shell's init() it would help extend my debug time. The code would use the BootServices table to call like: bs->SetWatchdogTimer(0,0,0,0);

Thanks.
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