Intel S1200SPL Technical Spesification page 137

Intel® Server Board S1200SP Family Technical Product Specification
Diagnostic LED Decoder
1 = LED On, 0 = LED Off
Checkpoint Upper Nibble
MSB
8h 4h
LED # #7 #6
C5h 1 1
C6h 1 1
C7h 1 1
00h 0 0
S3 Resume
40h 0 1
41h 0 1
42h 0 1
43h 0 1
BIOS Recovery
46h 0 1
47h 0 1
48h 0 1
49h 0 1
4Ah 0 1
POST Memory Initialization MRC Diagnostic Codes
There are two types of POST Diagnostic Codes displayed by the MRC during memory initialization; Progress
Codes and Fatal Error Codes.
The MRC Progress Codes are displays to the Diagnostic LEDs that show the execution point in the MRC
operational path at each step.
Diagnostic LED Decoder
1 = LED On, 0 = LED Off
Checkpoint Upper Nibble
MSB
8h 4h
LED #7 #6
MRC Progress Codes
B0h 1 0 1
B1h 1 0 1
B2h 1 0 1
B3h 1 0 1
B4h 1 0 1
B5h 1 0 1
B6h 1 0 1
B7h 1 0 1
B8h 1 0 1
B9h 1 0 1
BAh 1 0 1
BBh 1 0 1
Lower Nibble
2h 1h 8h 4h 2h
#5 #4 #3 #2 #1
0 0 0 1 0
0 0 0 1 1
0 0 0 1 1
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 1
0 0 0 0 1
0 0 0 1 1
0 0 0 1 1
0 0 1 0 0
0 0 1 0 0
0 0 1 0 1
Table 63. MRC Progress Codes
Lower Nibble
2h 1h 8h 4h 2h
#5 #4 #3 #2 #1
1 0 0 0
1 0 0 0
1 0 0 1
1 0 0 1
1 0 1 0
1 0 1 0
1 0 1 1
1 0 1 1
1 1 0 0
1 1 0 0
1 1 0 1
1 1 0 1
LSB
1h
#0
1 DXE PCI BUS Hot plug
0 DXE NVRAM cleanup
1 DXE Configuration Reset
0 INT19
0 S3 Resume PEIM (S3 started)
1 S3 Resume PEIM (S3 boot script)
0 S3 Resume PEIM (S3 Video Repost)
1 S3 Resume PEIM (S3 OS wake)
0 PEIM which detected forced Recovery condition
1 PEIM which detected User Recovery condition
0 Recovery PEIM (Recovery started)
1 Recovery PEIM (Capsule found)
0 Recovery PEIM (Capsule loaded)
LSB
1h
#0
0 Detect DIMM population
1 Set DDR4 frequency
0 Gather remaining SPD data
1 Program registers on the memory controller level
0 Evaluate RAS modes and save rank information
1 Program registers on the channel level
0 Perform the JEDEC defined initialization sequence
1 Train DDR4 ranks
0 Initialize CLTT/OLTT
1 Hardware memory test and init
0 Execute software memory init
1 Program memory map and interleaving
Description
Description
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