[Guide] Using Clover to "hotpatch" ACPI

[RehabMan]

Hi, Rehabman. Thank you for this informative guide.
I have a question that how can I remove unwanted device by using hotpatch. For example, I want to remove Device WTBT which has _HID, "PNP0C14". I tried to rename _HID to XHID and _STA to XSTA with tgtbridge "WTBT", and the device is not shown in IORegExplorer.
I am not sure what I did is appropriate.

No "Problem Reporting" files attached.
Read FAQ, "Problem Reporting" again. Carefully. Attach all requested files/output.
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/
Use the gen_debug.sh tool mentioned in the FAQ, that way it is less likely you'll omit something.

 

[Steeeeeeve]

No "Problem Reporting" files attached.
Read FAQ, "Problem Reporting" again. Carefully. Attach all requested files/output.
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/
Use the gen_debug.sh tool mentioned in the FAQ, that way it is less likely you'll omit something.

Here it is. From a real MacBookPro14,1's DSDT, I see that HPET's _STA value is zero, so I also set zero by using hotpatch to disable HPET. And I read that WMI (PNP0C14)devices are for Windows driver mapping(https://technet.microsoft.com/zh-cn/dn614028(v=vs.94)), so I set _STA to zero to disable them as well in SSDT-PNP0C14. I am not sure my method to disable them is correct or not.

 

[RehabMan]

Here it is. From a real MacBookPro14,1's DSDT, I see that HPET's _STA value is zero,

Certainly an interesting fact.
Just for those reading along, here is the relevant code:

                Device (HPET)
                {
                    Name (_HID, EisaId ("PNP0103"))  // _HID: Hardware ID
                    Name (_CID, EisaId ("PNP0C01"))  // _CID: Compatible ID
...
                    Method (_STA, 0, NotSerialized)  // _STA: Status
                    {
                        If (OSDW ())
                        {
                            Return (Zero)
                        }
...
                    }

so I also set zero by using hotpatch to disable HPET.

Method to be used:
- rename HPET._STA to XSTA
- provide SSDT that replaces with Name(_SB.PCI0.LPCB.HPET._STA, 0)

And I read that WMI (PNP0C14)devices are for Windows driver mapping(https://technet.microsoft.com/zh-cn/dn614028(v=vs.94)), so I set _STA to zero to disable them as well in SSDT-PNP0C14. I am not sure my method to disable them is correct or not.

No real need to disable the WMI stufff...

 

[Steeeeeeve]

Method to be used:
- rename HPET._STA to XSTA
- provide SSDT that replaces with Name(_SB.PCI0.LPCB.HPET._STA, 0)



No real need to disable the WMI stufff...

Thank you for advice. I added back WMI device and renamed HPET._STA to XSTA by using TgtBridge. However, I found that all my OEM SSDT's _STA were renamed to XSTA...(For example in SSDT-1, SKC0 device) I don't know the reason. Here's the trouble shooting file.

 

[RehabMan]

Thank you for advice. I added back WMI device and renamed HPET._STA to XSTA by using TgtBridge. However, I found that all my OEM SSDT's _STA were renamed to XSTA...(For example in SSDT-1, SKC0 device) I don't know the reason. Here's the trouble shooting file.

TgtBridge is kind of buggy.
Find a different way to target just HPET._STA.

 

[Steeeeeeve]

TgtBridge is kind of buggy.
Find a different way to target just HPET._STA.

Could you provide more hints? So sorry that I haven't come up with another idea to target HPET.

 

[RehabMan]

Could you provide more hints? So sorry that I haven't come up with another idea to target HPET.

Hints are in the guide:
http://www.tonymacx86.com/threads/guide-using-clover-to-hotpatch-acpi.200137/

 

[FaisalAshraf90]

Can someone make a hotpatch for VoodooI2C.kext
here is the link: https://voodooi2c.github.io/#GPIO Pinning/GPIO Pinning
my device name is TPL1 and gpio pin is 0x55

 

[Feartech]

Can someone make a hotpatch for VoodooI2C.kext
here is the link: https://voodooi2c.github.io/#GPIO Pinning/GPIO Pinning
my device name is TPL1 and gpio pin is 0x55

you can look at mine attached to give you an idea, these won't work as is, you will have to amend to your hardware

 

[FaisalAshraf90]

you can look at mine attached to give you an idea, these won't work as is, you will have to amend to your hardware

I have these in my config file but no effect