STATE_INDEPENDENCE_IsChangeToAMTEnabled

STATE_INDEPENDENCE_IsChangeToAMTEnabled is sent by the OS agent to query whether a change to Intel AMT mode is possible in current state. This command is part of the Intel MEI watchdog client, since this client is always active if the MEI driver is installed and running, even if Intel AMT is not enabled on the platform. Note that the watchdog client commands differ in their structure from the common AMTHI commands.

Note: There are two methods for enabling Intel AMT, an old one and a new one. Bit 7 in the Enabled field (see below) indicates which mode is supported on the currently running Intel AMT firmware version. If Bit 7 indicates that the old method is in use, please refer to Host Based Setup and Configuration provisioning flow. If Bit 7 indicates that the new method is supported, refer to the MHC_SetAmtOperationalState function to see how to use it as part of the provisioning flow.

STATE_INDEPENDENCE_IsChangeToAMTEnabled Request

typedef struct _STATE_INDEPENDENCE_COMMAND
    {

    UINT8 Cmd;

    UINT8 ByteCount;

    UINT8 SubCmd;

    UINT8 Version;

} STATE_INDEPENDENCE_COMMAND;

 

Field

Description

Cmd

05h

ByteCount

02h

SubCmd

51h

Version

10h

STATE_INDEPENDENCE_IsChangeToAMTEnabled Response

typedef struct _STATE_INDEPENDENCE_IS_CHANGE_ENABLED_RESPONSE

{

    UINT8      Enabled;

} STATE_INDEPENDENCE_IS_CHANGE_ENABLED_RESPONSE;

 

Field

Description

Enabled

Indicates whether the transition is allowed in current state.

STATE_INDEPENDENCE_IsChangeToAMTEnabled Codes

The following table lists the possible Enabled values.

Bit

Function

0

Indicates whether the transition is allowed in the current operational state.
1: Transition is allowed
0: Transition is not allowed

1

Current operational state. Indicates whether Intel AMT is enabled.
1: Intel AMT is enabled
0: Intel AMT is enabled

2-6

Reserved

7

Indicates whether using the old enablement method or the new one.
1: new
0: old

 

 

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