BIOS 1.40 breaks Thunderbolt 3 Support

[tristan-k]

I just finished flashing the new released BIOS 1.40. Sadly Thunderbolt 3 devices aren't recognized anymore. Plugging in a Thunderbolt 3 device results in a kernel panic:

panic(cpu 0 caller 0xffffff801a2469aa): Kernel trap at 0xffffff7f9e8790d1, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x00000000000001dc, CR3: 0x0000000021971000, CR4: 0x00000000003626e0
RAX: 0x8b9fc5fc49bb0086, RBX: 0x0000000000000002, RCX: 0x0000000000010002, RDX: 0x0000000000000001
RSP: 0xffffff83cb653e20, RBP: 0xffffff83cb653ea0, RSI: 0x0000000000000001, RDI: 0xffffff805bfa6fc0
R8:  0x0000000000000001, R9:  0x0000000000000002, R10: 0x0000000000000000, R11: 0xffffff80599047c0
R12: 0xffffff805a695000, R13: 0x0000000000000000, R14: 0x0000000000000002, R15: 0x0000000000000000
RFL: 0x0000000000010202, RIP: 0xffffff7f9e8790d1, CS:  0x0000000000000008, SS:  0x0000000000000010
Fault CR2: 0x00000000000001dc, Error code: 0x0000000000000000, Fault CPU: 0x0, PL: 0, VF: 1

Backtrace (CPU 0), Frame : Return Address
0xffffff83cb653880 : 0xffffff801a11a65d 
0xffffff83cb6538d0 : 0xffffff801a254a75 
0xffffff83cb653910 : 0xffffff801a2465fe 
0xffffff83cb653960 : 0xffffff801a0c0a40 
0xffffff83cb653980 : 0xffffff801a119d27 
0xffffff83cb653a80 : 0xffffff801a11a117 
0xffffff83cb653ad0 : 0xffffff801a8c1a6c 
0xffffff83cb653b40 : 0xffffff801a2469aa 
0xffffff83cb653cc0 : 0xffffff801a2466a8 
0xffffff83cb653d10 : 0xffffff801a0c0a40 
0xffffff83cb653d30 : 0xffffff7f9e8790d1 
0xffffff83cb653ea0 : 0xffffff7f9e855553 
0xffffff83cb653ee0 : 0xffffff801a82d4fd 
0xffffff83cb653f30 : 0xffffff801a82bdce 
0xffffff83cb653f70 : 0xffffff801a82b3c6 
0xffffff83cb653fa0 : 0xffffff801a0c013e 
      Kernel Extensions in backtrace:
         com.apple.driver.AppleIntelCFLGraphicsFramebuffer(14.0.7)[3FD08174-D70D-359E-AE97-A7FB3043D6F1]@0xffffff7f9e821000->0xffffff7f9ea55fff
            dependency: com.apple.iokit.IOPCIFamily(2.9)[44472E6F-8DA0-3B46-ADEF-AFF76EC6C6DB]@0xffffff7f9ab31000
            dependency: com.apple.iokit.IOACPIFamily(1.4)[2956198D-24F2-3790-A9B2-1EAB9434B906]@0xffffff7f9b3da000
            dependency: com.apple.iokit.IOAcceleratorFamily2(438.7.3)[B263A05C-9992-3742-AD6C-295E68E22576]@0xffffff7f9d95a000
            dependency: com.apple.iokit.IOReportFamily(47)[72B53B80-5713-30C1-BAD8-9D55FD718DA2]@0xffffff7f9b060000
            dependency: com.apple.AppleGraphicsDeviceControl(5.2.6)[E04CD680-EC03-39ED-99C6-902C8495543F]@0xffffff7f9b9b6000
            dependency: com.apple.iokit.IOGraphicsFamily(576.1)[1279CBF9-88F1-3EB4-9566-1085DBF6DF8B]@0xffffff7f9b67f000

BSD process name corresponding to current thread: kernel_task
Boot args: agdpmod=pikera shikigva=80 brcmfx-country=DE

Mac OS version:
19H2

Kernel version:
Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64
Kernel UUID: 05D51A3D-3A87-3FF0-98C3-9CF3827A3EDD
Kernel slide:     0x0000000019e00000
Kernel text base: 0xffffff801a000000
__HIB  text base: 0xffffff8019f00000
System model name: iMac20,2 (Mac-AF89B6D9451A490B)
System shutdown begun: NO
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 52853678951

[SchmockLord]

Have you set all your BIOS settings again?

[SchmockLord]

Hi,

I think I know the reason. With a newer BIOS beta 1.42, the Thunderbolt device appears at RP21 and not RP05 anymore.

Maybe check that file out:
SSDT-TB3HP.aml.zip

[fidalgodev]

Yes, on bios before 1.4, TB3 chip was on RP05.

On BIOS 1.4 and onwards, TB3 chip is now on RP21

[tristan-k]

This is still not working for me. Even with the latest changes. I have several Thunderbolt 2 and 3 devices to test this.