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Appendix B: POST Code Diagnostic LED Decoder Intel
®
Compute Module MFS2600KI TPS
Intel Confidential Revision 1.0
Intel order number: G51989-002
46
Upper nibble bits = 1010b = Ah; Lower nibble bits = 1100b = Ch; the two are concatenated as
ACh
The following table provides a list of all POST progress codes.
Table 27. POST Progress Codes
Checkpoint
Diagnostic LED Decoder
Description
1 = LED On, 0 = LED Off
Upper Nibble
Lower Nibble
MSB
LSB
8h
4h
2h
1h
8h
4h
2h
1h
LED #
#7
#6
#5
#4
#3
#2
#1
#0
SEC Phase
01h
0
0
0
0
0
0
0
1
First POST code after CPU reset
02h
0
0
0
0
0
0
1
0
Microcode load begin
03h
0
0
0
0
0
0
1
1
CRAM initialization begin
04h
0
0
0
0
0
1
0
0
Pei Cache When Disabled
05h
0
0
0
0
0
1
0
1
SEC Core At Power On Begin.
06h
0
0
0
0
0
1
1
0
Early CPU initialization during Sec Phase.
07h
0
0
0
0
0
1
1
1
Early SB initialization during Sec Phase.
08h
0
0
0
0
1
0
0
0
Early NB initialization during Sec Phase.
09h
0
0
0
0
1
0
0
1
End Of Sec Phase.
0Eh
0
0
0
0
1
1
1
0
Microcode Not Found.
0Fh
0
0
0
0
1
1
1
1
Microcode Not Loaded.
PEI Phase
10h
0
0
0
1
0
0
0
0
PEI Core
11h
0
0
0
1
0
0
0
1
CPU PEIM
15h
0
0
0
1
0
1
0
1
NB PEIM
19h
0
0
0
1
1
0
0
1
SB PEIM
MRC Process Codes – MRC Progress Code Sequence is executed - See Table 28
PEI Phase continued…
31h
0
0
1
1
0
0
0
1
Memory Installed
32h
0
0
1
1
0
0
1
0
CPU PEIM (Cpu Init)
33h
0
0
1
1
0
0
1
1
CPU PEIM (Cache Init)
34h
0
0
1
1
0
1
0
0
CPU PEIM (BSP Select)
35h
0
0
1
1
0
1
0
1
CPU PEIM (AP Init)
36h
0
0
1
1
0
1
1
0
CPU PEIM (CPU SMM Init)
4Fh
0
1
0
0
1
1
1
1
Dxe IPL started
DXE Phase
60h
0
1
1
0
0
0
0
0
DXE Core started
61h
0
1
1
0
0
0
0
1
DXE NVRAM Init
62h
0
1
1
0
0
0
1
0
SB RUN Init
63h
0
1
1
0
0
0
1
1
Dxe CPU Init
68h
0
1
1
0
1
0
0
0
DXE PCI Host Bridge Init
69h
0
1
1
0
1
0
0
1
DXE NB Init
6Ah
0
1
1
0
1
0
1
0
DXE NB SMM Init
70h
0
1
1
1
0
0
0
0
DXE SB Init
71h
0
1
1
1
0
0
0
1
DXE SB SMM Init
72h
0
1
1
1
0
0
1
0
DXE SB devices Init
78h
0
1
1
1
1
0
0
0
DXE ACPI Init
79h
0
1
1
1
1
0
0
1
DXE CSM Init
90h
1
0
0
1
0
0
0
0
DXE BDS Started
91h
1
0
0
1
0
0
0
1
DXE BDS connect drivers
92h
1
0
0
1
0
0
1
0
DXE PCI Bus begin
93h
1
0
0
1
0
0
1
1
DXE PCI Bus HPC Init
94h
1
0
0
1
0
1
0
0
DXE PCI Bus enumeration