Kontron AM4150 IPMI Firmware - Manual (Page 34)

IPMI Firmware AM4150
Page 34 ID 1052-5679, Rev. 1.0
P R E L I M I N A R Y
7. E-Keying
E-Keying has been defined in the AMC.0 R2.0 Specification to prevent module damage and
malfunctions and to verify the bay connection compatibility. Therefore, the FRU data of an AMC
module contains PICMG-defined records which describe the module’s AMC interoperability:
• Module Current Requirements Record: indicates the maximum power consumption of
the AM4150
• Clock Configuration Record: configures the PCI Express reference clock (FCLKA on
AMC Card-edge connector)
• AMC Point-to-point Record: indicates the AMC port capabilities of the AM4150, i.e. the
supported AMC fabric interface types of the current board configuration
The AM4150 module supports various AMC fabric interface types in several combinations con-
figurable via the “sconf” base configurations. Each “sconf” base configuration is reflected in the
module’s FRU data.
Depending on the current board configuration (i.e. the module’s description in the FRU data re-
cords), the carriers’s IPMC (in an ATCA system) or the MCH (of a MicroTCA system) decides
during E-Keying which AMC fabric interfaces are activated. Therefore, the IPMI commands Set
AMC Port State
and Get AMC Port State defined by the AMC.0 specification are used for
either granting or rejecting the E-Keys (i.e. enabling or disabling of AMC ports during E-Keying).
7.1 Board Configuration for E-Keying
The board configuration for E-Keying is done via the U-Boot “sconf” command. For further in-
formation on the U-Boot “sconf” command, refer to the AM4150 U-Boot Bootloader User Guide.