Intel S1200RP Technical Product Specification - Page 248
POST Memory Initialization MRC Diagnostic Codes
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Appendix C: POST Code Diagnostic LED Decoder Intel® Server Board S1200V3RP Diagnostic LED Decoder 1 = LED On, 0 = LED Off Checkpoint Upper Nibble Lower Nibble MSB LSB 8h 4h 2h 1h 8h 4h 2h 1h LED # #7 #6 #5 #4 #3 #2 #1 #0 S3 Resume Description E0h 1 1 0 1 0 0 0 0 S3 Resume PEIM (S3 started) E1h 1 1 0 1 0 0 0 1 S3 Resume PEIM (S3 boot script) E2h 1 1 0 1 0 0 1 0 S3 Resume PEIM (S3 Video Repost) E3h 1 1 0 1 0 0 1 1 S3 Resume PEIM (S3 OS wake) BIOS Recovery F0h 1 1 1 1 0 0 0 0 PEIM which detected forced Recovery condition F1h 1 1 1 1 0 0 0 1 PEIM which detected User Recovery condition F2h 1 1 1 1 0 0 1 0 Recovery PEIM (Recovery started) F3h 1 1 1 1 0 0 1 1 Recovery PEIM (Capsule found) F4h 1 1 1 1 0 1 0 0 Recovery PEIM (Capsule loaded) 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. Table 74. MRC Progress Codes Diagnostic LED Decoder 1 = LED On, 0 = LED Off Checkpoint Upper Nibble Lower Nibble MSB LSB 8h 4h 2h 1h 8h 4h 2h 1h LED #7 #6 #5 #4 #3 #2 #1 #0 MRC Progress Codes Description B0h 1 0 1 1 0 0 0 0 Detect DIMM population B1h 1 0 1 1 0 0 0 1 Set DDR3 frequency B2h 1 0 1 1 0 0 1 0 Gather remaining SPD data B3h 1 0 1 1 0 0 1 1 Program registers on the memory controller level B4h 1 0 1 1 0 1 0 0 Evaluate RAS modes and save rank information B5h 1 0 1 1 0 1 0 1 Program registers on the channel level B6h 1 0 1 1 0 1 1 0 Perform the JEDEC defined initialization sequence B7h 1 0 1 1 0 1 1 1 Train DDR3 ranks B8h 1 0 1 1 1 0 0 0 Initialize CLTT/OLTT B9h 1 0 1 1 1 0 0 1 Hardware memory test and init BAh 1 0 1 1 1 0 1 0 Execute software memory init BBh 1 0 1 1 1 0 1 1 Program memory map and interleaving BCh 1 0 1 1 1 1 0 0 Program RAS configuration 236 Revision 1.0