System Boot Post Code Flow Sample; Cold Boot Flow - Seagate Exos AP 4U100 Installation And Maintenance Manual

System BOOT POST Code flow sample

Cold Boot Flow

Table 30 Cold Boot flow sample
POST Code
70
74
76
A1
A3
A7
A9
AA
AB
AF
B0
B1
AF
System Reboot
70
74
76
A1
A3
A7
A8
A9
AA
AE
AF
E0
E1
E4
E3
E5
B0
B1
B4
B2
B3
B6
Definition
Super I/O initial
PCIE MMIO BAR Initial
South Bridge Early Initial
Collect info such as SBSP, Boot Mode, Reset type etc.
Setup up minimum path between SBSP & other sockets
Topology discovery and route calculation
Program final IO SAD setting
Protocol layer and other Uncore settings
Transition links to full speed operation
KTI is done
DIMM Detect
Clock Initial
KTI is done, ready to reset
Super I/O initial
PCIE MMIO BAR Initial
South Bridge Early Initial
Collect info such as SBSP, Boot Mode, Reset type etc.
Setup up minimum path between SBSP & other sockets
Topology discovery and route calculation
Program final route
Program final IO SAD setting
Protocol layer and other Uncore settings
Coherency Settings
KTI is done
IIO early init entry
Early Pre-link training setting
IIO Gen3 override
IIO Link training
IIO early init exit
DIMM Detect
Clock Initial
Rank Detect
SPD Data
Global Early Initial
DDR IO Early Initial
System BOOT POST Code flow sample System BOOT POST Code flow sample 129