So far I've run intelmetool with iomem=relaxed and this is the result I get
Bad news, you have a QM67 Express Chipset LPC Controller so you have ME hardware on board and it is very difficult to remove, continuing...
RCBA at 0xfed1c000
MEI not hidden on PCI, checking if visible
MEI found: [8086:1c3a] 6 Series/C200 Series Chipset Family MEI Controller #1
ME Status : 0x1e000245
ME Status 2 : 0x69000006
ME: FW Partition Table : OK
ME: Bringup Loader Failure : NO
ME: Firmware Init Complete : YES
ME: Manufacturing Mode : NO
ME: Boot Options Present : NO
ME: Update In Progress : NO
ME: Current Working State : Normal
ME: Current Operation State : M0 with UMA
ME: Current Operation Mode : Normal
ME: Error Code : No Error
ME: Progress Phase : Host Communication
ME: Power Management Event : Non-power cycle reset
ME: Progress Phase State : Host communication established
ME seems okay on this board
WRITE [00] : CB: 0x80040007
WRITE [00] : CB: 0x000002ff
ME: timeout waiting for data: expected 8, available 0
ME: GET FW VERSION message failed
WRITE [00] : CB: 0x80080007
WRITE [00] : CB: 0x00000203
WRITE [00] : CB: 0x00000000
READ [08] : CB: 0x800d0007
READ [08] : CB: 0x00008203
READ [08] : CB: 0x00000000
READ [08] : CB: 0xf65c6504
READ [08] : CB: 0x0007000d
ME Capability: Full Network manageability : ON
ME Capability: Regular Network manageability : OFF
ME Capability: Manageability : ON
ME Capability: Small business technology : OFF
ME Capability: Level III manageability : OFF
ME Capability: IntelR Anti-Theft (AT) : ON
ME Capability: IntelR Capability Licensing Service (CLS) : ON
ME Capability: IntelR Power Sharing Technology (MPC) : ON
ME Capability: ICC Over Clocking : ON
ME Capability: Protected Audio Video Path (PAVP) : ON
ME Capability: IPV6 : ON
ME Capability: KVM Remote Control (KVM) : ON
ME Capability: Outbreak Containment Heuristic (OCH) : OFF
ME Capability: Virtual LAN (VLAN) : ON
ME Capability: TLS : ON
ME Capability: Wireless LAN (WLAN) : ON
That is not ambiguous, it's clear that your ME is running and is active. BTW, if you need support for this, contact upstream coreboot where the repo now lives.
So far I've run intelmetool with iomem=relaxed and this is the result I get
Bad news, you have a
QM67 Express Chipset LPC Controller
so you have ME hardware on board and it is very difficult to remove, continuing... RCBA at 0xfed1c000 MEI not hidden on PCI, checking if visible MEI found: [8086:1c3a] 6 Series/C200 Series Chipset Family MEI Controller #1ME Status : 0x1e000245 ME Status 2 : 0x69000006
ME: FW Partition Table : OK ME: Bringup Loader Failure : NO ME: Firmware Init Complete : YES ME: Manufacturing Mode : NO ME: Boot Options Present : NO ME: Update In Progress : NO ME: Current Working State : Normal ME: Current Operation State : M0 with UMA ME: Current Operation Mode : Normal ME: Error Code : No Error ME: Progress Phase : Host Communication ME: Power Management Event : Non-power cycle reset ME: Progress Phase State : Host communication established
PCI READ [bc] : 0x000000bc ME: Extend SHA-256: a2458929c3a034af3564d2fcf1e9d3beea92d5d6dffd8a3a0297c9cb0b9f3f8a
ME seems okay on this board WRITE [00] : CB: 0x80040007 WRITE [00] : CB: 0x000002ff ME: timeout waiting for data: expected 8, available 0 ME: GET FW VERSION message failed WRITE [00] : CB: 0x80080007 WRITE [00] : CB: 0x00000203 WRITE [00] : CB: 0x00000000 READ [08] : CB: 0x800d0007 READ [08] : CB: 0x00008203 READ [08] : CB: 0x00000000 READ [08] : CB: 0xf65c6504 READ [08] : CB: 0x0007000d ME Capability: Full Network manageability : ON ME Capability: Regular Network manageability : OFF ME Capability: Manageability : ON ME Capability: Small business technology : OFF ME Capability: Level III manageability : OFF ME Capability: IntelR Anti-Theft (AT) : ON ME Capability: IntelR Capability Licensing Service (CLS) : ON ME Capability: IntelR Power Sharing Technology (MPC) : ON ME Capability: ICC Over Clocking : ON ME Capability: Protected Audio Video Path (PAVP) : ON ME Capability: IPV6 : ON ME Capability: KVM Remote Control (KVM) : ON ME Capability: Outbreak Containment Heuristic (OCH) : OFF ME Capability: Virtual LAN (VLAN) : ON ME Capability: TLS : ON ME Capability: Wireless LAN (WLAN) : ON
Hardware is the Thinkpad T420.