chipsec.utilcmd.msgbus_cmd module

>>> chipsec_util msgbus read     <port> <register>
>>> chipsec_util msgbus write    <port> <register> <value>
>>> chipsec_util msgbus mm_read  <port> <register>
>>> chipsec_util msgbus mm_write <port> <register> <value>
>>> chipsec_util msgbus message  <port> <register> <opcode> [value]
>>>
>>> <port>    : message bus port of the target unit
>>> <register>: message bus register/offset in the target unit port
>>> <value>   : value to be written to the message bus register/offset
>>> <opcode>  : opcode of the message on the message bus

Examples:

>>> chipsec_util msgbus read     0x3 0x2E
>>> chipsec_util msgbus mm_write 0x3 0x27 0xE0000001
>>> chipsec_util msgbus message  0x3 0x2E 0x10
>>> chipsec_util msgbus message  0x3 0x2E 0x11 0x0