Intel S2600CP Technical Product Specification - Page 217

Intel® Server Board S2600CP and Server System P4000CP TPS Appendix E: POST Code Diagnostic LED Decoder 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 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 156. 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 BFh 1 0 1 1 1 1 1 1 MRC is done Memory Initialization at the beginning of POST includes multiple functions, including: discovery, channel training, validation that the DIMM population is acceptable and functional, initialization of the IMC and other hardware settings, and initialization of applicable RAS configurations. When a major memory initialization error occurs and prevents the system from booting with data integrity, a beep code is generated, the MRC will display a fatal error code on the diagnostic LEDs, and a system halt command is executed. Fatal MRC error halts do NOT change the state of the System Status LED, and they do NOT get logged as SEL events. The following table lists all MRC fatal errors that are displayed to the Diagnostic LEDs. Revision 1.2 201 Intel order number G26942-003