Intel X38ML Product Specification - Page 105
Intelligent Platform Management Interface Specification
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Intel® Server Board X38ML Error Reporting and Handling Event Data 2 and 3 are undefined for all other events that are logged by the BIOS. Bits 3:1 of the generator ID field define the format revision. The system software ID is a 7-bit quantity. For events covered in this document, the system software IDs are within the range 0x18 - 0x1F. A system software ID of 0x18 indicates that OEM data bytes 2 and 3 are encoded using data format scheme revision 1. System software IDs in the range of 0x10 - 0x1f are reserved for the SMI handler. The IPMI specification reserves two distinct ranges for the BIOS and SMI handler. Since the distinction between the two is not important, the same values are used for the generator IDs for the BIOS and the SMI handler. Technically, the FRB-2 event is not logged by the SMI handler, but it will use the same generator ID range as memory errors. This makes it easier for the BIOS and the event log parser code. The BIOS logs all the events using the discrete event trigger class. For this class, the format of the event data bytes is defined in the Intelligent Platform Management Interface Specification, Version 2.0. The system BIOS sensors are logical entities that generate events. The BIOS ensures each combination of sensor type (such as memory) and event type (sensor-specific) has a unique sensor number. 6.2.3.1 Memory Error Events Table 42. Memory Error Events Field Generator ID Sensor Type Sensor Number Type Code Event Data 1 IPMI Definition 7:1 System software ID or IPMB slave address. 1 = ID is system software ID 0 = ID is IPMB slave address See the Intelligent Platform Management Interface Specification, Version 2.0. Number of sensor that generated this event. 0x6F if event offsets are specific to the sensor. 7:6 BIOS Implementation If BIOS is the source: 7:4 0x3 for the system BIOS. 3:1 1 = Format revision The revision of the data format for OEM data bytes 2 and 3. For this revision of the specification, set this field to 1. All other revisions are reserved. 0 1 = ID is system software ID. As a result, the generator ID byte will start from 0x31 and go up to 0x3f, in increments of 2 for events logged by the BIOS. 0xC for memory errors. Unique value for each type of event. This field has no other significance. It should not be displayed to the end user if the event is logged by BIOS. For correctable memory errors, the value is 0x08. For uncorrectable memory errors, the value is 0x08. To disable correctable memory error logging, the value is 0x09. 0x6F 0x20 - Correctable ECC Error Revision 1.3 93 Intel order number E15331-006