Intel Intel NetStructure Single Board Computer, MPCBL0010 10.10 AdvancedMC Module Activation

MPCBL0010 SBC—Hardware Management Overview

Intel NetStructure® MPCBL0010 Single Board Computer

Technical Product Specification October 2006

136 Order Number: 304120

The MPCBL0010 SBC supports one blue Hot Swap LED, mounted on the front panel.

This LED indicates when it is safe to remove the SBC from the chassis. The on-board

IPMC drives this LED to indicate the hot swap state.

When the lower ejector handle is press inward, the hot swap switch embedded in the

PCB l asserts a HOT_SWAP_PB# signal to the IPMC, and the IPMC moves from the

M4 state to the M5 state. At the M5 state, the IPMC asks the AdvancedTCA shelf

manager for permission to move to the M6 state. The Hot Swap LED indicates this state

by blinking ON for about 100 milliseconds, followed by 900 milliseconds in the OFF

state. This occurs as long as the SBC remains in the M5 state. Once permission is

received from the AdvancedTCA shelf manager or higher-level software, the SBC

moves to the M6 state.

The AdvancedTCA shelf manager or higher level software can reject the request to

move to the M6 state. If this occurs, the hot swap LED returns to a solid OFF condition,

indicating that the SBC has returned to the M4 state.

If the SBC reaches the M6 state, either through an extraction request through the

lower ejector handle or a direct command from higher-level software, and an ACPI-

enabled operating system is loaded on the SBC, the IPMC communicates to the

operating system that the module must discontinue operation in preparation for

removal. The Hot Swap LED continues to flash during this preparation time, just like it

does at the M5 state. When main board power is successfully removed from the SBC,

the Hot Swap LED remains lit, indicating it is safe to remove the SBC from the chassis.

10.10 AdvancedMC Module Activation

The MPCBL0010 SBC is configured to avoid activation of an AdvancedMC module during

the BIOS POST or operating system boot sequence. The AdvancedMC module should be

installed before BIOS POST, or after the operating system has completed loading.

Within an ATCA chassis, there is often no defined order that the ShMC grants power to

the FRU (SBC) and sub-FRU (AdvancedMC module) for an SBC. The MPCBL0010 SBC

has a built in delay mechanism that prevents the activation process of the FRU and

inserted sub-FRU into M3 state, which is activation in progress until the ShMC has

granted power to all FRUs. This allows all FRUs to go to M4 at the same time, at which

point the SBC BIOS will scan its devices. There is a timeout (30 second) if for some

reason the ShMC does not power up an AdvancedMC module to ensure the SBC will still

boot.

After the sychronization occurs, there is a "dead time" (2 seconds) where if a PCI-

Express or SATA AdvancedMC module insertion is performed, the payload is reset. This

"dead time" has been added to ensure the BIOS will see the AdvancedMC device at

boot time.

Table 122. Hot Swap LED Signals

LED Status Meaning

Off Normal status

Blinking blue P reparing for removal/insertion: Long blink indicates activation is

in progress, short blink when deactivation is in progress

Solid blue Ready for hot swap