[m5-dev] when to fake BIOS initialization

[Gabe Black]

   The kernel is assuming that timer 0 has been set up to count with a 
period of 0 (which is effectively 0xFFFF, it's maximum value) by the 
BIOS during system bring up. It's trying to watch the value of the 
timers count in order to switch from using the PIT for interrupts to the 
APIC right after the timer goes off/wraps around. This is all fine, 
except the BIOS never runs so the timer never gets set up, the count 
never changes, and the kernel hangs. What I need to do is to go in and 
fake the initialization as if the BIOS had done something, but I need to 
make sure it works with checkpointing and all that so I can't just stick 
it in a constructor. What do people think is a good place to do that? 
I'm thinking of making it the platform objects responsibility but the 
system object is the one that knows when things are coming up, right? 
I'm only really aware of ways to bring up the CPUs and not how to do ISA 
specific initialization of the system/platform/whatever else.

Gabe
_______________________________________________
m5-dev mailing list
m5-dev@m5sim.org
http://m5sim.org/mailman/listinfo/m5-dev