MENMON
MEN Mikro Elektronik GmbH
94
20A014-00 E2 – 2007-08-16
4.1.1
State Diagram
Figure 9.
MENMON – State diagram, Degraded Mode/Full Mode
Full Mode
Degraded Mode
/do CPU early init
Check if secondary MENMON
valid
EarlyInit
Secondary
MENMON
Secondary MENMON valid
Check for 'D' pressed
Parse SO-DIMM SPD
Init DRAM
Check for 'd' pressed
Quick DRAM test
DegradedStartup
Relocating
DRAM ok
Determine clocks
I2C controller init
SYSPARAM init
Init early MMBIOS devs
StartupPrologue
MainState
Secondary MENMON not valid or abort pin set
Init heap in DRAM
FullStartup
StartupPrologue
MainState
D,d pressed
DRAM not working