Bios-Bmc Interactions - Intel S7000FC4UR Technical Product Specification

BIOS-BMC Interactions

26. BIOS-BMC Interactions
The BIOS-BMC interactions include the following:
FRB2: See section 22.5.2.
The BIOS uses the Get Self Test Results command to determine the health of the BMC.
BMC time-stamp synchronization:
The BIOS can use the BMC secure mode features to lock-out front panel access. BIOS
control of this feature is configured in the BIOS Setup utility.
System information for SMBIOS, the BIOS Setup utility and BIOS-BMC behavior: The
BIOS retrieves sub-system inventory information to display it in the BIOS Setup utility,
and to use it to populate certain SMBIOS fields. The BIOS has different behaviors with
respect to BMC depending on system OEM type.
Set system GUID: The BIOS initializes the BMC system globally unique ID (GUID) at
every system boot. The system GUID and the BIOS Universal Unique Identifier (UUID)
are the same. During manufacturing, the UUID is programmed into a reserved area of
the BIOS flash.
Set processor state: The BIOS uses the Set Processor State command to communicate
fault states to the BMC.
Boot control: A remote console application can set the boot options, then send a
command to reset or power-cycle the server. The boot flags only apply for one system
restart. The BIOS reads the boot flags from the BMC during the system boot.
Serial MUX control: The BMC has a command that allows the BIOS to 'force' the serial
connector to be switched over to the server board serial controller. This command is
provided to support the pre-boot only and disabled configurations of the EMP.
Console redirection using SOL: The BIOS interacts with the BMC's SOL feature to
provide console redirection via SOL.
ACPI:
The BIOS keeps the BMC synchronized with the system ACPI state. This is
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necessary because some ACPI states cannot be sensed by the hardware signals
that the BMC monitors. Synchronization is done with the Set ACPI Power State
command.
The BIOS sets the BMC's ACPI configuration during boot using the Set ACPI
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Configuration command.
Memory RAS and bus error monitoring: See section 22.20.
ASF POST progress queuing.
BIOS SEL logging: The BIOS logs SEL events using the Platform Event Message
command.
Disable PEF on entry to setup: Per the recommendation in the PEF Startup Delay
section of the IPMI 2.0 specification, The BIOS disables PEF when the BIOS Setup
Utility is run and restores it restores when the BIOS Setup utility is exited.
Watchdog timer interactions:
During the boot process, the BIOS uses the BMC's Watchdog Timer for FRB2.
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Intel order number E18291-001
ESB2 BMC Core TPS
Revision 1.0